/* Workspace styles for /app */
:root {
    --app-bg: #c3ccd4;
    --panel: #ffffff;
    --panel-soft: #f4f8fc;
    --menu-shell: #9aa8b8;
    --menu-shell-deep: #7a8999;
    --menu-panel: #f7fafe;
    --menu-panel-strong: #ffffff;
    --sidebar-button-bg: #ffffff;
    --sidebar-button-bg-strong: #ffffff;
    --sidebar-button-border: #c6d7ea;
    --border: #d2dbe6;
    --border-strong: #c1ccda;
    --text: #000000;
    --text-soft: #5f6b78;
    --text-dim: #7d8894;
    --accent: #445d77;
    --accent-soft: #edf3f8;
    --success: #2f6f57;
    --success-soft: #eef7f2;
    --warning: #8a6a31;
    --warning-soft: #fbf5e8;
    --danger: #a24d4d;
    --overlay: rgba(20, 28, 36, 0.22);
    --landing-ink: #081528;
    --landing-ink-soft: #5b6a7d;
    --landing-blue: #121e2c;
    --landing-line: rgba(17, 47, 87, 0.1);
    --sidebar-gap: -1px;
    --main-gap: 8px;
}

* {
    box-sizing: border-box;
}

[hidden] {
    display: none !important;
}

body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    font-family: "Aptos", "Segoe UI", Tahoma, sans-serif;
    background: #0f172a;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    color: var(--text);
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
}

body.studio-page {
    min-height: 100dvh;
}

.landing-page,
.utility-page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: 18px 18px 4px;
}

.simple-landing {
    flex: 1 1 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 0;
}

.simple-landing-card,
.utility-shell {
    width: min(860px, 100%);
}

.simple-landing-card,
.utility-card {
    padding: clamp(24px, 4vw, 44px);
    border: 1px solid rgba(17, 47, 87, 0.08);
    border-radius: 32px;
    background: rgba(255, 255, 255, 0.86);
    box-shadow: 0 28px 80px rgba(9, 25, 52, 0.14);
    backdrop-filter: blur(14px);
    text-align: center;
}

.simple-landing-logo,
.utility-logo {
    display: block;
    width: min(100%, 760px);
    height: auto;
    margin: 0 auto;
}

.utility-logo {
    width: min(100%, 360px);
    margin-bottom: 18px;
}

.auth-card-logo {
    width: min(100%, 320px);
    margin: 0 auto 20px;
}

.simple-landing-tag,
.utility-eyebrow {
    color: var(--landing-blue);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.simple-landing-tag {
    margin: 20px 0 0;
}

.simple-landing-actions {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 24px;
}

.simple-landing-actions .landing-button {
    min-width: 220px;
}

.landing-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 22px;
    border-radius: 999px;
    border: 1px solid transparent;
    text-decoration: none;
    font-size: 14px;
    font-weight: 700;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.landing-button:hover {
    transform: translateY(-1px);
}

.landing-button-primary {
    background: #1e293b;
    border: 1px solid #334155;
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.landing-button-primary:hover {
    background: #334155;
    border-color: #475569;
}


.landing-button-secondary {
    border-color: rgba(14, 48, 93, 0.12);
    background: rgba(255, 255, 255, 0.82);
    color: var(--landing-ink);
}

.simple-landing-note,
.utility-copy,
.utility-meta,
.legal-section p,
.auth-helper {
    color: var(--landing-ink-soft);
    line-height: 1.75;
}

.simple-landing-note {
    margin: 18px 0 0;
    font-size: 0.95rem;
}

.simple-landing-links,
.utility-links {
    display: flex;
    justify-content: center;
    gap: 18px;
    flex-wrap: wrap;
    margin-top: 18px;
}

.simple-landing-links a,
.utility-links a,
.legal-section a,
.auth-helper a,
.utility-copy a,
.landing-footer-links a {
    color: var(--landing-blue);
    text-decoration: none;
    font-weight: 700;
}

.landing-footer {
    width: 100%;
    padding: 32px 18px;
    margin-top: auto;
}

.landing-footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.landing-footer-links a {
    color: var(--landing-ink-soft) !important;
    font-size: 13px;
    font-weight: 600;
    transition: color 0.18s ease;
}

.landing-footer-links a:hover {
    color: var(--landing-blue) !important;
}

.utility-page {
    min-height: 100vh;
}

.utility-shell {
    width: min(860px, 100%);
    margin: 0 auto;
}

.auth-shell {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: min(640px, 100%);
    margin: 0 auto;
}

.utility-back-link {
    display: inline-flex;
    align-items: center;
    margin-bottom: 18px;
    color: var(--landing-ink);
    text-decoration: none;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.utility-eyebrow {
    margin: 0 0 10px;
}

.utility-card h1 {
    margin: 0;
    color: var(--landing-ink);
    font-family: "Bahnschrift", "Aptos", "Segoe UI", sans-serif;
    font-size: clamp(2rem, 3vw, 3rem);
    letter-spacing: -0.04em;
}

.utility-copy,
.utility-meta {
    margin: 14px 0 0;
}

.legal-card {
    text-align: left;
}

.legal-section {
    border-top: 1px solid rgba(17, 47, 87, 0.08);
    margin-top: 18px;
    padding-top: 18px;
}

.legal-section h2 {
    margin: 0 0 8px;
    color: var(--landing-ink);
    font-size: 1.15rem;
    letter-spacing: -0.02em;
}

.legal-section p {
    margin: 0;
}

.auth-form {
    display: grid;
    gap: 10px;
    margin-top: 20px;
}

.auth-mode-switch {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin-bottom: 18px;
}

.auth-mode-button {
    margin-top: 0;
    min-height: 42px;
    border-radius: 999px;
}

.auth-mode-button.is-active {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: var(--accent);
}

.auth-label {
    margin-top: 8px;
    color: var(--landing-ink);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    text-align: left;
}

.auth-input {
    width: 100%;
    margin-top: 0;
    padding: 14px 16px;
    border: 1px solid rgba(17, 47, 87, 0.12);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.92);
    color: var(--landing-ink);
    font-size: 15px;
}

.auth-submit {
    width: 100%;
    margin-top: 12px;
}

.auth-helper {
    margin: 16px 0 0;
    font-size: 13.5px;
}

.auth-toggle-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 10px;
    flex-wrap: wrap;
}

.auth-toggle-copy {
    margin: 0;
    color: var(--landing-ink-soft);
    font-size: 13.5px;
    line-height: 1.6;
}

.auth-toggle-button {
    width: auto;
    min-width: 0;
    min-height: auto;
    margin-top: 0;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--landing-blue);
    font-size: 13.5px;
    font-weight: 700;
    text-decoration: none;
}

.auth-toggle-button:hover {
    background: transparent;
    border-color: transparent;
    color: var(--landing-ink);
}

.auth-status {
    margin: 16px 0 0;
    padding: 0 2px;
    font-size: 0.95rem;
    line-height: 1.6;
    text-align: left;
}

.auth-status[data-tone="info"] {
    color: var(--landing-ink-soft);
}

.auth-status[data-tone="success"] {
    color: var(--success);
}

.auth-status[data-tone="error"] {
    color: var(--danger);
}

.auth-session {
    margin-top: 18px;
    padding: 18px;
    border: 1px solid rgba(17, 47, 87, 0.08);
    border-radius: 24px;
    background: rgba(244, 248, 252, 0.74);
    text-align: left;
}

.auth-session-title {
    margin: 0;
    color: var(--landing-ink);
    font-size: 0.95rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.auth-session-copy {
    margin: 10px 0 0;
    color: var(--landing-ink-soft);
    line-height: 1.7;
}

.auth-session-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 16px;
}

.auth-session-actions .landing-button,
.auth-session-button {
    min-width: 200px;
}

.auth-session-button {
    width: auto;
    margin-top: 0;
}

body[data-ui-theme="dark"] {
    --app-bg: #0f1820;
    --panel: #16212b;
    --panel-soft: #1e2c37;
    --menu-shell: #1a2834;
    --menu-shell-deep: #0f1820;
    --menu-panel: #1c2a35;
    --menu-panel-strong: #243440;
    --sidebar-button-bg: #243441;
    --sidebar-button-bg-strong: #2a3d4c;
    --sidebar-button-border: #435a6c;
    --border: #2f4150;
    --border-strong: #3d5363;
    --text: #edf4fa;
    --text-soft: #b4c6d6;
    --text-dim: #8ca0b2;
    --accent: #9cc6f0;
    --accent-soft: #2b3d4d;
    --success: #8fe0b3;
    --success-soft: #21362d;
    --warning: #f0ca8a;
    --warning-soft: #3a3122;
    --danger: #efaaaa;
    --overlay: rgba(4, 9, 13, 0.58);
}

#app {
    display: flex;
    gap: 0;
    min-height: 100vh;
    padding: 16px;
    background: var(--app-bg);
    border-radius: 2px;
    box-shadow: 0 28px 76px rgba(9, 25, 52, 0.18);
}

@media (min-width: 901px) {
    body.studio-page {
        height: 100dvh;
        overflow: hidden;
    }

    body.studio-page .studio-shell {
        display: block;
        height: 100%;
    }

    body.studio-page #app {
        height: 100%;
        min-height: 0;
        overflow: hidden;
    }

    body.studio-page #mode-dock,
    body.studio-page #sidebar,
    body.studio-page #workspace {
        min-height: 0;
    }

    body.studio-page #sidebar {
        display: flex;
    }

    body.studio-page .sidebar-shell {
        flex: 1 1 auto;
        min-height: 0;
        overscroll-behavior: contain;
    }

    body.studio-page #workspace {
        min-width: 0;
    }
}

#mode-dock {
    display: flex;
    flex-direction: column;
    gap: 0;
    width: 60px;
    flex-shrink: 0;
    padding: 0;
    border: 1px solid rgba(199, 207, 216, 0.95);
    border-top-left-radius: 18px;
    border-bottom-left-radius: 18px;
    background: linear-gradient(180deg, #ffffff 0%, #f7f9fc 100%);
    box-shadow: 0 12px 24px rgba(24, 31, 39, 0.12);
    overflow: hidden;
    position: relative;
    z-index: 1;
}

.dock-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 78px;
    margin-top: 0;
    padding: 10px 6px;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border: 0;
    border-radius: 0;
    background: #eef5fb;
    box-shadow: none;
}

.dock-button.is-active {
    background: #e4edf6;
    color: var(--accent);
}

#sidebar-mode-manage {
    border-radius: 18px 0 0 0 !important;
    overflow: hidden;
}

#sidebar-mode-system {
    margin-top: 0;
    border-style: solid;
    border-width: 1px 0;
    border-color: rgba(191, 197, 204, 0.74);
    border-radius: 0;
}

#sidebar-mode-frame,
#sidebar-mode-slab,
#sidebar-mode-wall {
    border-style: solid;
    border-width: 1px 0;
    border-color: rgba(191, 197, 204, 0.74);
    border-radius: 0;
}

#sidebar-mode-export {
    margin: auto 0 0;
    min-height: 90px;
    border-style: solid;
    border-width: 0 0 1px;
    border-color: rgba(191, 197, 204, 0.74);
    border-radius: 0 0 12px 18px;
    color: #cac3b4;
}

#sidebar-mode-export.is-active {
    background: #ebdfc1;
    color: #c2ad82;
}

#sidebar-mode-export:hover {
    background: #eee4ca;
    color: #8d6e2f;
}

#sidebar-mode-export.is-active:hover {
    background: #ebdfc1;
    color: #8a6826;
}

#sidebar {
    margin-left: var(--sidebar-gap);
    width: 340px;
    flex-shrink: 0;
    overflow: visible;
    position: relative;
    z-index: 2;
    border: 1px solid rgba(235, 244, 255, 0.938);
    border-top-right-radius: 18px;
    border-bottom-right-radius: 18px;
    background: linear-gradient(180deg, var(--menu-shell-deep) 0%, var(--menu-shell) 100%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.16);
}


.sidebar-shell {
    display: flex;
    flex-direction: column;
    gap: 12px;
    height: 100%;
    padding: 14px;
    overflow-y: auto;
    overflow-x: visible;
    position: relative;
    z-index: 2;
    background: var(--panel);
}

#workspace,
.bottom-axis-bar,
.preview-content,
.modal-content {
    margin-left: var(--main-gap);
    border-radius: 14px;
}

#workspace,
.bottom-axis-bar,
.preview-content,
.modal-content {
    border: 1px solid var(--border);
    background: var(--panel);
}

.brand-kicker,
.overlay-kicker,
.workspace-kicker {
    margin: 0 0 8px;
    color: var(--text-dim);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.app-title {
    margin: 0;
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
}

.brand-banner {
    padding: 2px 2px 6px;
}

.project-section {
    display: grid;
    gap: 16px;
}

.project-section .menu-heading {
    margin-bottom: 0;
}

.project-name-input {
    margin-top: 0;
    padding: 9px 11px;
    font-size: 15px;
    font-weight: 700;
    background: transparent;
    border-color: transparent;
}

.project-name-input[aria-invalid="true"] {
    border-color: rgba(162, 77, 77, 0.45);
    box-shadow: 0 0 0 1px rgba(162, 77, 77, 0.14);
}

.project-status-row {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 8px;
    flex-wrap: wrap;
}

.project-status-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    max-width: 100%;
    min-height: 28px;
    padding: 0 10px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--panel-soft);
    color: var(--text-soft);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.project-status-chip.is-detailed {
    padding: 6px 10px;
    line-height: 1.25;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0;
    text-align: center;
    text-transform: none;
    white-space: normal;
}

.project-status-chip[data-status="unsaved"] {
    border-color: rgba(138, 106, 49, 0.28);
    background: var(--warning-soft);
    color: var(--warning);
}

.project-status-chip[data-status="conflict"] {
    border-color: rgba(162, 77, 77, 0.32);
    background: rgba(162, 77, 77, 0.12);
    color: var(--danger);
}

.project-status-chip[data-status="saved"] {
    border-color: rgba(47, 111, 87, 0.24);
    background: var(--success-soft);
    color: var(--success);
}

.project-status-chip[data-status="saving"] {
    border-color: rgba(68, 93, 119, 0.22);
    background: var(--accent-soft);
    color: var(--accent);
}

.project-actions {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.project-action-button {
    width: auto;
    min-width: 0;
    min-height: 34px;
    margin-top: 0;
    padding: 7px 10px;
    font-size: 12px;
    white-space: nowrap;
}

.project-autosave-group {
    display: grid;
    gap: 8px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
}

.project-autosave-header {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 8px;
}

.project-subsection-title {
    margin: 0;
    color: var(--text);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.project-subsection-title-tertiary {
    color: var(--text-soft);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.project-autosave-group label {
    margin-top: 0;
    color: var(--text);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0;
    text-transform: none;
}

.project-autosave-header input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    display: grid;
    place-content: center;
    width: 18px;
    height: 18px;
    margin: 0;
    margin-top: 0;
    padding: 0;
    flex: 0 0 auto;
    border: 1px solid rgba(95, 107, 120, 0.48);
    border-radius: 5px;
    background: linear-gradient(180deg, #ffffff 0%, #eef3f8 100%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.project-autosave-header input[type="checkbox"]::after {
    content: "";
    width: 9px;
    height: 5px;
    margin-top: -1px;
    border-left: 2px solid #ffffff;
    border-bottom: 2px solid #ffffff;
    opacity: 0;
    transform: rotate(-45deg) scale(0.75);
    transition: opacity 0.12s ease, transform 0.12s ease;
}

.project-autosave-header input[type="checkbox"]:hover {
    border-color: rgba(49, 80, 110, 0.52);
    background: linear-gradient(180deg, #f7fafc 0%, #e8eef5 100%);
}

.project-autosave-header input[type="checkbox"]:checked {
    border-color: var(--accent);
    background: linear-gradient(180deg, #5c7c98 0%, #3f5f7b 100%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.project-autosave-header input[type="checkbox"]:checked::after {
    opacity: 1;
    transform: rotate(-45deg) scale(1);
}

.project-autosave-header input[type="checkbox"]:focus-visible {
    outline: 2px solid rgba(49, 80, 110, 0.22);
    outline-offset: 2px;
}

.project-autosave-note {
    margin: 0;
    max-width: 32ch;
}

#project-autosave-select {
    max-width: 220px;
    margin-top: 0;
    padding: 8px 10px;
    font-size: 12px;
}

.project-library-section {
    display: grid;
    gap: 8px;
    padding-top: 18px;
    border-top: 1px solid var(--border);
}

.project-library-section .project-picker-toolbar {
    margin-top: 0;
}

.project-sidebar-list {
    margin-top: 0;
    max-height: min(40vh, 360px);
    min-height: 0;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding-right: 2px;
}

.app-subtitle {
    margin: 8px 0 0;
    color: var(--text-soft);
    font-size: 13px;
    line-height: 1.5;
}

.brand-meta,
.menu-chip,
.section-copy {
    display: none;
}

.menu-section {
    padding: 0px;
    border: 0;
    background: transparent;
    box-shadow: none;
}

.menu-section-footer {
    margin-top: auto;
}

.menu-section-highlight {
    background: transparent;
}

.menu-heading {
    margin-bottom: 10px;
}

.menu-header {
    color: var(--text);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.tool-hint,
.field-note {
    display: block;
    margin-top: 8px;
    color: var(--text-soft);
    font-size: 12px;
    line-height: 1.45;
}

.inline-row {
    display: flex;
    gap: 8px;
}

.axis-type-select {
    width: 96px;
    flex-shrink: 0;
}

.axis-lists {
    margin-top: 12px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
    max-height: 164px;
    overflow-y: auto;
}

.axis-list-spaced {
    margin-top: 8px;
}

#axis-lists small {
    display: block;
    margin-bottom: 8px;
    color: var(--text-dim);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

button,
input,
select,
textarea {
    font: inherit;
}

button {
    width: 100%;
    min-height: 38px;
    margin-top: 8px;
    padding: 9px 12px;
    border: 1px solid var(--border-strong);
    border-radius: 10px;
    background: var(--panel);
    color: var(--text);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

button:hover {
    border-color: #b8c2cd;
    background: var(--panel-soft);
}

#sidebar button {
    border-color: var(--sidebar-button-border);
    background: linear-gradient(180deg, var(--sidebar-button-bg) 0%, var(--sidebar-button-bg-strong) 100%);
}

#sidebar button:hover {
    border-color: #b7cbe1;
    background: linear-gradient(180deg, #f9fbff 0%, #edf4fb 100%);
}

button:disabled {
    cursor: default;
    border-color: var(--border);
    background: var(--panel-soft);
    color: var(--text-dim);
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid rgba(49, 80, 110, 0.2);
    outline-offset: 1px;
    border-color: var(--accent);
}

.tool-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-top: 12px;
}

[data-tool] {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    margin-top: 0;
    padding: 0;
    border-radius: 12px;
    box-shadow: 0 8px 18px rgba(23, 32, 42, 0.08);
    text-align: center;
    font-size: 17px;
    line-height: 1;
    transition:
        transform 0.16s ease,
        box-shadow 0.16s ease,
        border-top-color 0.16s ease,
        background 0.16s ease,
        color 0.16s ease;
    z-index: 1;
}

[data-tool]:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 22px rgba(23, 32, 42, 0.12);
}

[data-tool]::before,
[data-tool]::after {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease, transform 0.15s ease;
}

[data-tool]::before {
    content: "";
    left: 16px;
    bottom: calc(100% + 3px);
    width: 10px;
    height: 10px;
    border-top: 1px solid var(--border-strong);
    border-left: 1px solid var(--border-strong);
    background: rgba(255, 255, 255, 0.98);
    transform: translate(0, 6px) rotate(45deg);
    z-index: 1200;
}

[data-tool]::after {
    content: attr(data-tooltip);
    left: 0;
    bottom: calc(100% + 8px);
    padding: 7px 9px;
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.98);
    color: var(--text);
    font-size: 11px;
    font-weight: 600;
    line-height: 1.2;
    white-space: nowrap;
    text-align: left;
    box-shadow: 0 10px 24px rgba(23, 32, 42, 0.12);
    transform: translate(0, 6px);
    z-index: 1201;
}

[data-tool]:hover::before,
[data-tool]:focus-visible::before {
    opacity: 1;
    transform: translate(0, 0) rotate(45deg);
}

[data-tool]:hover::after,
[data-tool]:focus-visible::after {
    opacity: 1;
    transform: translate(0, 0);
}

.tool-symbol {
    display: block;
}

.column-tool-icon {
    width: 28px;
    height: 28px;
    display: block;
    object-fit: contain;
}

.export-mode-switch {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-top: 12px;
}

.export-mode-button {
    margin-top: 0;
}

.export-mode-button.is-active {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: var(--accent);
}

.export-panel-title {
    margin-top: 14px;
    color: var(--text);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.grid-system-launch {
    background: linear-gradient(180deg, #eff5fc 0%, #e7eef8 100%);
    color: var(--accent);
    border-color: #c3d3e5;
}

.grid-system-launch-import {
    background: linear-gradient(180deg, #e7f2ff 0%, #dcecff 100%);
    border-color: #a9c6e7;
}

.import-action-wrap {
    position: relative;
}

.sidebar-dropdown-shell {
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
}

.sidebar-dropdown-stack {
    display: grid;
    gap: 4px;
}

.sidebar-dropdown-shell .sidebar-dropdown-menu {
    margin-top: 0;
    border-radius: 10px;
    box-shadow: none;
}

.sidebar-dropdown-shell .sidebar-dropdown-summary {
    padding: 9px 11px;
    font-size: 11px;
    line-height: 1.2;
    letter-spacing: 0;
    text-transform: none;
    box-shadow: none;
}

.sidebar-dropdown-summary-levels > span:first-child {
    flex: 1 1 auto;
}

.sidebar-dropdown-body {
    display: grid;
    gap: 10px;
    padding: 0 12px 12px;
}

.sidebar-dropdown-body button {
    margin-top: 0;
}

.sidebar-dropdown-copy {
    margin: 0;
}

.sidebar-dropdown-badge {
    display: none;
}

.export-dock-panel {
    display: flex;
    flex: 1 1 auto;
    flex-direction: column;
    gap: 12px;
    min-height: 0;
}

.export-dock-heading {
    margin-bottom: 0;
}

.export-dock-chip {
    display: inline-flex;
}

.export-dock-copy {
    display: block;
    margin: 0;
}

.export-dock-run-button {
    width: 100%;
    margin-top: 0;
    align-self: stretch;
}

.export-dock-panels {
    flex: 0 0 auto;
    gap: 4px;
    align-content: start;
    min-height: auto;
}

.export-dock-main-menu {
    margin-top: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    overflow: visible;
}

.export-dock-main-summary-label {
    display: block;
    width: min(100%, 230px);
    margin: 0 auto;
    text-align: center;
    line-height: 1.35;
    white-space: normal;
}

.export-dock-main-body {
    gap: 12px;
    padding: 4px 0 0;
    background: transparent;
}

.export-dock-quantities-panel {
    display: grid;
    gap: 12px;
}

.export-dock-stack {
    gap: 6px;
}

.export-dock-menu {
    margin-top: 0;
}

.export-dock-summary {
    gap: 10px;
}

.export-dock-summary-label {
    flex: 1 1 auto;
    min-width: 0;
}

.export-dock-summary-actions {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
    padding-right: 18px;
}

.export-group-mode-button,
.export-check-button,
.export-frame-picker-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 30px;
    min-height: 30px;
    margin-top: 0;
    padding: 0;
    border-radius: 8px;
}

.export-group-mode-button,
.export-check-button {
    width: 30px;
}

.export-check-button {
    min-width: 24px;
    width: 24px;
    border: 0;
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    color: var(--text-dim);
}

#sidebar .export-check-button,
#sidebar .export-check-button:hover,
#sidebar .export-check-button:disabled {
    border-color: transparent;
    background: transparent;
    box-shadow: none;
}

.export-group-mode-button svg,
.export-check-button svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.export-group-mode-button[data-mode="none"] {
    color: var(--text-dim);
}

.export-group-mode-button[data-mode="all"],
.export-check-button[aria-pressed="true"] {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: var(--accent);
}

.export-check-button[aria-pressed="true"] {
    border-color: transparent;
    background: transparent;
}

.export-group-mode-button[data-mode="custom"] {
    color: var(--warning);
    border-color: rgba(138, 106, 49, 0.24);
    background: var(--warning-soft);
}

.export-dock-body {
    display: grid;
    gap: 10px;
    padding-top: 2px;
}

.export-item-row,
.export-frame-custom-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    min-height: 34px;
    position: relative;
    padding: 7px 0;
    border: 0;
    border-radius: 0;
    background: transparent;
}

.export-item-row + .export-item-row,
.export-frame-custom-option + .export-frame-custom-option {
    border-top: 0;
}

.export-item-row + .export-item-row::before,
.export-frame-custom-option + .export-frame-custom-option::before {
    content: "";
    position: absolute;
    top: 0;
    left: 10px;
    right: 10px;
    border-top: 1px solid rgba(198, 215, 234, 0.34);
    pointer-events: none;
}

.export-item-label,
.export-frame-custom-copy {
    min-width: 0;
    color: var(--text);
    font-size: 12px;
    line-height: 1.4;
}

.export-frame-controls {
    display: grid;
    gap: 8px;
}

.export-frame-scope {
    margin-top: 0;
}

.export-frame-picker-toggle {
    justify-content: space-between;
    width: 100%;
    padding: 0 12px;
}

.export-frame-picker-toggle-copy {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.export-frame-picker-toggle-count {
    color: var(--text-soft);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.export-frame-picker {
    display: grid;
    gap: 8px;
    padding: 8px;
    border: 1px dashed rgba(95, 107, 120, 0.35);
    border-radius: 10px;
    background: rgba(247, 250, 254, 0.82);
}

.export-frame-checkbox-list {
    display: grid;
    gap: 0;
    max-height: 180px;
    overflow-y: auto;
    padding-right: 2px;
}

.export-frame-checkbox-list.is-empty {
    max-height: none;
    overflow: visible;
}

.export-frame-custom-option {
    min-height: 30px;
}

.export-dock-menu.is-disabled,
.export-dock-menu.is-disabled .export-item-row,
.export-dock-menu.is-disabled .export-frame-custom-option {
    opacity: 0.62;
}

.export-dock-menu.is-disabled .export-dock-summary {
    cursor: default;
}

.export-dock-menu.is-disabled .export-dock-summary::after {
    opacity: 0.35;
}

.export-dock-save-wrap {
    display: grid;
    gap: 8px;
    margin-top: 12px;
}

.export-dock-save-button {
    margin-top: 0;
}

#levels-section #level-list {
    display: grid;
    gap: 8px;
    max-height: min(32vh, 280px);
    overflow-y: auto;
    overscroll-behavior: contain;
    padding-right: 2px;
}

.level-list-toolbar {
    display: flex;
    justify-content: flex-start;
}

.levels-add-button {
    margin: 0;
    width: auto;
    min-width: 0;
    min-height: 34px;
    padding: 7px 12px;
    font-size: 12px;
}

.level-quick-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    position: relative;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--panel-soft);
}

.level-quick-row.is-active {
    border-color: #b9c9d8;
    background: var(--accent-soft);
}

.level-quick-main {
    width: auto;
    min-width: 0;
    min-height: auto;
    margin: 0;
    padding: 0;
    border: 0;
    background: transparent;
    color: inherit;
    text-align: left;
    display: grid;
    gap: 2px;
    flex: 1 1 auto;
    overflow: hidden;
}

.level-quick-name {
    color: var(--text);
    font-size: 13px;
    font-weight: 700;
    line-height: 1.3;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.level-quick-meta {
    color: var(--text-dim);
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}

.level-quick-actions {
    display: inline-flex;
    align-items: center;
    justify-content: flex-end;
    gap: 6px;
    margin-left: auto;
    flex: 0 0 auto;
}

.level-quick-action {
    width: auto;
    min-width: 0;
    min-height: 30px;
    margin: 0;
    padding: 0 10px;
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    background: var(--panel);
    color: var(--text-soft);
    font-size: 11px;
    font-weight: 700;
    white-space: nowrap;
}

.level-quick-action:hover {
    border-color: rgba(126, 155, 182, 0.52);
    background: rgba(255, 255, 255, 0.96);
}

.level-quick-action-danger {
    border-color: rgba(162, 77, 77, 0.26);
    color: var(--danger);
    background: rgba(162, 77, 77, 0.08);
}

.level-quick-action-danger:hover:not(:disabled) {
    border-color: rgba(162, 77, 77, 0.4);
    background: rgba(162, 77, 77, 0.14);
}

.level-quick-action:disabled {
    opacity: 0.45;
    cursor: default;
}

.level-quick-row.is-editor-open {
    border-color: #b9c9d8;
    box-shadow: 0 10px 24px rgba(49, 73, 102, 0.12);
}

.level-quick-height-editor {
    flex: 1 1 100%;
    display: grid;
    gap: 10px;
    margin-top: 2px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--panel);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.level-quick-height-editor-title {
    color: var(--text);
    font-size: 12px;
    font-weight: 700;
    line-height: 1.4;
}

.level-quick-height-editor-field {
    display: grid;
    gap: 6px;
}

.level-quick-height-editor-label {
    color: var(--text-soft);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.level-quick-height-editor-input-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    max-width: 180px;
}

.level-quick-height-editor-input {
    width: 100%;
    margin-top: 0;
    padding: 8px 10px;
    text-align: right;
}

.level-quick-height-editor-unit {
    color: var(--text-soft);
    font-size: 12px;
    font-weight: 700;
}

.level-quick-height-editor-error {
    margin: 0;
    color: var(--danger);
    font-size: 12px;
    font-weight: 600;
}

.level-quick-height-editor-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    flex-wrap: wrap;
}

.level-quick-editor-button {
    width: auto;
    min-width: 0;
    min-height: 32px;
    margin: 0;
    padding: 0 12px;
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    background: var(--panel-soft);
    color: var(--text-soft);
    font-size: 12px;
    font-weight: 700;
    white-space: nowrap;
}

.level-quick-editor-button:hover {
    border-color: rgba(126, 155, 182, 0.52);
    background: rgba(255, 255, 255, 0.96);
}

.level-quick-editor-button-primary {
    border-color: #b9c9d8;
    background: var(--accent-soft);
    color: var(--text);
}

body[data-ui-theme="dark"] .level-quick-row.is-editor-open {
    border-color: #6484a2;
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.26);
}

body[data-ui-theme="dark"] .level-quick-height-editor {
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

body[data-ui-theme="dark"] .level-quick-editor-button:hover {
    background: #21313d;
}

body[data-ui-theme="dark"] .level-quick-editor-button-primary {
    border-color: #6484a2;
    background: #355166;
    color: var(--text);
}

#project-picker-list[hidden] {
    display: none;
}

.import-etabs-launch {
    margin-top: 0;
    padding-right: 46px;
}

.analyze-image-launch {
    background: linear-gradient(135deg, #f0e7ff 0%, #e6d6ff 100%);
    border-color: #c9b3ff;
    color: #6b4dff;
}

.analyze-image-launch:hover {
    background: linear-gradient(135deg, #f8f5ff 0%, #ede6ff 100%);
    border-color: #b799ff;
}

body[data-ui-theme="dark"] .analyze-image-launch {
    background: linear-gradient(135deg, #2d1b4d 0%, #1a0f2e 100%);
    border-color: #4d338a;
    color: #9d80ff;
}

body[data-ui-theme="dark"] .analyze-image-launch:hover {
    background: linear-gradient(135deg, #3d2b5d 0%, #2a1f3e 100%);
    border-color: #5d43a0;
}

.import-help-toggle {
    position: absolute;
    top: 50%;
    right: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    min-width: 28px;
    height: 28px;
    min-height: 28px;
    margin: 0;
    padding: 0;
    border-radius: 999px;
    border-color: #a9c6e7;
    background: rgba(255, 255, 255, 0.82);
    color: var(--accent);
    font-size: 12px;
    font-weight: 800;
    line-height: 1;
    transform: translateY(-50%);
    z-index: 2;
}

.import-help-toggle:hover {
    border-color: #8eb4db;
    background: #f7fbff;
}

.import-action-wrap.is-help-open .import-help-toggle {
    border-color: var(--accent);
    background: var(--accent-soft);
}

.etabs-help-popover {
    position: fixed;
    top: 50%;
    left: 50%;
    right: auto;
    width: min(420px, calc(100vw - 40px));
    max-height: min(78vh, 640px);
    overflow-y: auto;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--panel);
    box-shadow: 0 22px 48px rgba(23, 32, 42, 0.2);
    transform: translate(-50%, -50%);
    z-index: 1100;
}

.etabs-help-popover[hidden] {
    display: none;
}

.etabs-help-title {
    margin-bottom: 8px;
    color: var(--accent);
    font-size: 12px;
    font-weight: 700;
}

.grid-system-launch-secondary {
    background: linear-gradient(180deg, var(--sidebar-button-bg) 0%, var(--sidebar-button-bg-strong) 100%);
    color: var(--text);
    border-color: var(--sidebar-button-border);
}

[data-tool="delete"] {
    border-color: #d8b3b3;
    background: #fbefef;
    color: var(--danger);
}

.active-tool {
    border-color: var(--accent) !important;
    background: linear-gradient(180deg, #eef5ff 0%, #dce9fb 100%) !important;
    color: #1f5b98;
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.84),
        0 14px 26px rgba(68, 93, 119, 0.18);
    transform: translateY(-1px);
}

[data-tool].active-tool .tool-symbol {
    transform: scale(1.08);
}

.btn-preview {
    border-color: #c3d3e5;
    background: linear-gradient(180deg, #f2f7fd 0%, #e8f0f9 100%);
    color: var(--accent);
}

.btn-preview:hover {
    background: linear-gradient(180deg, #f9fbff 0%, #edf4fb 100%);
}

.btn-export {
    border-color: rgba(54, 106, 184, 0.42);
    background: linear-gradient(180deg, #2d6fc6 0%, #225ba8 100%);
    color: #f7fbff;
    box-shadow: 0 14px 28px rgba(45, 111, 198, 0.22);
}

.btn-export:hover {
    border-color: rgba(54, 106, 184, 0.5);
    background: linear-gradient(180deg, #367bd5 0%, #2863b8 100%);
}

.export-access-note {
    margin-top: 10px;
}

.export-free-downloads-note {
    margin: 6px 0 0;
    color: var(--accent);
    font-size: 12px;
    font-weight: 700;
    line-height: 1.4;
}

#billing-manage-btn {
    margin-top: 10px;
}

.btn-del-axis {
    width: 24px;
    min-width: 24px;
    height: 24px;
    min-height: 24px;
    margin: 0;
    padding: 0;
    border-radius: 8px;
    border-color: #d8b3b3;
    background: #fbefef;
    color: var(--danger);
    font-size: 11px;
}

.axis-item,
.item-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-top: 6px;
    padding: 9px 10px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--panel-soft);
    color: var(--text);
    font-size: 13px;
}

.item-row.is-active {
    border-color: #b9c9d8;
    background: var(--accent-soft);
}

.level-button {
    width: auto;
    min-height: auto;
    margin: 0;
    padding: 0;
    border: 0;
    background: transparent;
    color: inherit;
    text-align: left;
    font-weight: 600;
}

.level-meta {
    color: var(--text-dim);
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}

label {
    display: block;
    margin-top: 12px;
    color: var(--text-soft);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

input,
select,
textarea {
    width: 100%;
    margin-top: 6px;
    padding: 10px 12px;
    border: 1px solid var(--border-strong);
    border-radius: 10px;
    background: var(--panel);
    color: var(--text);
    font-size: 13px;
}

input[readonly] {
    background: var(--panel-soft);
    cursor: default;
}

input::placeholder,
textarea::placeholder {
    color: var(--text-dim);
}

input[type="number"] {
    appearance: textfield;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

textarea {
    resize: vertical;
    min-height: 88px;
}

#workspace {
    position: relative;
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
    background: var(--panel);
}

#canvas-stage {
    --model-space-bg: #f4f8fc;
    --model-space-grid-color: rgba(112, 134, 156, 0.06);
    --model-space-chip-bg: rgba(255, 255, 255, 0.84);
    --model-space-chip-border: rgba(210, 219, 230, 0.95);
    --model-space-chip-text: #17202a;
    --model-space-chip-shadow: 0 10px 24px rgba(31, 41, 51, 0.08);
    --model-space-export-bg: #e8f0f8;
    --model-space-export-hover-bg: #edf4fb;
    --model-space-export-border: rgba(84, 120, 170, 0.38);
    --model-space-export-text: #24323d;
    --model-space-export-shadow: 0 16px 30px rgba(54, 93, 144, 0.16);
    --model-space-export-hover-shadow: 0 20px 36px rgba(54, 93, 144, 0.22);
    --model-space-export-topline: rgba(255, 255, 255, 0.88);
    --model-space-export-focus: 0 0 0 4px rgba(76, 154, 255, 0.18);
    --model-space-export-text-shadow: 0 1px 0 rgba(255, 255, 255, 0.44);
    position: relative;
    flex: 1;
    height: 100%;
    min-height: 0;
    overflow: hidden;
    background: var(--model-space-bg);
}

#canvas-stage[data-model-space-theme="dark"] {
    --model-space-bg: #16222d;
    --model-space-grid-color: rgba(156, 182, 207, 0.09);
    --model-space-chip-bg: rgba(19, 30, 40, 0.82);
    --model-space-chip-border: rgba(132, 158, 183, 0.34);
    --model-space-chip-text: #edf4fa;
    --model-space-chip-shadow: 0 14px 28px rgba(0, 0, 0, 0.28);
    --model-space-export-bg: #14324d;
    --model-space-export-hover-bg: #193c5c;
    --model-space-export-border: rgba(84, 129, 182, 0.72);
    --model-space-export-text: #f3f8fc;
    --model-space-export-shadow: 0 18px 38px rgba(0, 0, 0, 0.44);
    --model-space-export-hover-shadow: 0 22px 42px rgba(0, 0, 0, 0.52);
    --model-space-export-topline: rgba(255, 255, 255, 0.1);
    --model-space-export-focus: 0 0 0 4px rgba(71, 98, 125, 0.26);
    --model-space-export-text-shadow: 0 1px 1px rgba(0, 0, 0, 0.34);
}

#canvas-stage::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(var(--model-space-grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--model-space-grid-color) 1px, transparent 1px);
    background-size: 36px 36px;
    pointer-events: none;
}

.workspace-overlap-picker {
    position: absolute;
    z-index: 6;
    display: grid;
    gap: 8px;
    min-width: 210px;
    max-width: min(280px, calc(100% - 28px));
    padding: 12px;
    border: 1px solid rgba(128, 151, 177, 0.28);
    border-radius: 16px;
    background: rgba(252, 254, 255, 0.96);
    box-shadow: 0 18px 40px rgba(35, 53, 72, 0.18);
    backdrop-filter: blur(12px);
}

.workspace-overlap-picker-title {
    color: #223243;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.workspace-overlap-picker-list {
    display: grid;
    gap: 6px;
}

.workspace-overlap-picker-option {
    display: grid;
    gap: 2px;
    width: 100%;
    margin-top: 0;
    min-height: 0;
    padding: 10px 12px;
    border: 1px solid rgba(149, 171, 196, 0.28);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.92);
    color: #1f2f40;
    text-align: left;
    box-shadow: 0 8px 20px rgba(61, 87, 115, 0.08);
    transition:
        border-color 0.16s ease,
        background 0.16s ease,
        box-shadow 0.16s ease,
        transform 0.16s ease;
}

.workspace-overlap-picker-option:hover {
    border-color: rgba(82, 128, 184, 0.46);
    background: rgba(246, 250, 255, 0.98);
    box-shadow: 0 12px 24px rgba(61, 87, 115, 0.12);
    transform: translateY(-1px);
}

.workspace-overlap-picker-option:focus-visible {
    outline: none;
    box-shadow:
        0 0 0 4px rgba(76, 154, 255, 0.16),
        0 12px 24px rgba(61, 87, 115, 0.12);
}

.workspace-overlap-picker-option-label {
    font-size: 13px;
    font-weight: 700;
    line-height: 1.3;
}

.workspace-overlap-picker-option-meta {
    color: #607387;
    font-size: 11px;
    line-height: 1.35;
}

.workspace-overlap-picker-close {
    justify-self: end;
}

#canvas-stage[data-model-space-theme="dark"] .workspace-overlap-picker {
    border-color: rgba(116, 149, 180, 0.28);
    background: rgba(18, 29, 41, 0.94);
    box-shadow: 0 22px 44px rgba(0, 0, 0, 0.36);
}

#canvas-stage[data-model-space-theme="dark"] .workspace-overlap-picker-title {
    color: #edf4fa;
}

#canvas-stage[data-model-space-theme="dark"] .workspace-overlap-picker-option {
    border-color: rgba(109, 137, 165, 0.28);
    background: rgba(25, 40, 55, 0.92);
    color: #edf4fa;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.24);
}

#canvas-stage[data-model-space-theme="dark"] .workspace-overlap-picker-option:hover {
    border-color: rgba(110, 161, 224, 0.42);
    background: rgba(31, 50, 69, 0.96);
}

#canvas-stage[data-model-space-theme="dark"] .workspace-overlap-picker-option-meta {
    color: #b4c6d8;
}

.workspace-overlay {
    position: absolute;
    inset: 14px 14px auto 14px;
    z-index: 2;
    display: flex;
    justify-content: flex-end;
    pointer-events: none;
}

.workspace-quick-tools-overlay {
    position: absolute;
    inset: 10px auto auto 14px;
    z-index: 2;
    display: flex;
    justify-content: flex-start;
    width: min(680px, calc(50% - 14px));
    max-width: calc(100% - 28px);
    pointer-events: none;
}

.workspace-quick-tools-overlay>* {
    pointer-events: auto;
}

.workspace-panel-stack {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 12px;
    margin-left: auto;
    width: min(760px, 100%);
    max-width: min(760px, calc(100vw - 28px));
    pointer-events: none;
}

.workspace-panel-stack>* {
    pointer-events: auto;
}

.workspace-bottom-overlay {
    position: fixed;
    inset: auto 24px 150px auto;
    z-index: 1998;
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
    pointer-events: none;
}

.workspace-bottom-overlay>* {
    pointer-events: auto;
}

.workspace-auth-cta-row {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 6px;
    width: auto;
    align-self: flex-end;
    margin-right: 2px;
    margin-bottom: -2px;
    white-space: nowrap;
}

.workspace-auth-access-link {
    display: inline-flex;
    align-items: center;
    justify-content: flex-end;
    width: auto;
    margin-top: 0;
    min-height: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    color: #28496f;
    font-size: 11px;
    font-weight: 700;
    line-height: 1.1;
    white-space: nowrap;
    text-align: right;
    box-shadow: none;
    pointer-events: auto;
    transition:
        color 0.16s ease;
}

.workspace-auth-access-link:hover {
    background: transparent;
    color: #163353;
    text-decoration: underline;
    text-underline-offset: 0.16em;
}

.workspace-auth-access-link:focus-visible {
    outline: 2px solid rgba(29, 99, 255, 0.28);
    outline-offset: 4px;
}

.workspace-auth-access-separator {
    color: rgba(40, 73, 111, 0.56);
    font-size: 10px;
    font-weight: 700;
    line-height: 1;
}

#canvas-stage[data-model-space-theme="dark"] .workspace-auth-access-link {
    background: transparent;
    color: #d8e7f5;
}

#canvas-stage[data-model-space-theme="dark"] .workspace-auth-access-link:hover {
    background: transparent;
    color: #ffffff;
}

#canvas-stage[data-model-space-theme="dark"] .workspace-auth-access-separator {
    color: rgba(216, 231, 245, 0.56);
}

.workspace-toolbar {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: flex-start;
    gap: 8px;
    margin-left: auto;
    width: 100%;
    max-width: 100%;
}

.workspace-toolbar-top {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    width: 100%;
    min-width: 0;
    flex-wrap: nowrap;
}

.workspace-toolbar-secondary {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    min-width: 0;
    flex: 1 1 auto;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
}

.workspace-toolbar-secondary::-webkit-scrollbar {
    display: none;
}

.workspace-toolbar-secondary>* {
    flex: 0 0 auto;
}

.workspace-history-actions {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    flex: 0 0 auto;
}

.workspace-history-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    margin: 0;
    padding: 0;
    border: 1px solid var(--model-space-chip-border);
    border-radius: 999px;
    background: var(--model-space-chip-bg);
    color: var(--model-space-chip-text);
    box-shadow: var(--model-space-chip-shadow);
    backdrop-filter: blur(4px);
    pointer-events: auto;
    transition:
        transform 0.16s ease,
        border-color 0.16s ease,
        background 0.16s ease,
        color 0.16s ease,
        opacity 0.16s ease,
        box-shadow 0.16s ease;
}

.workspace-history-button svg {
    width: 16px;
    height: 16px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.workspace-history-icon {
    display: block;
    width: 16px;
    height: 16px;
    object-fit: contain;
}

.workspace-3d-button-icon {
    width: 28px;
    height: 28px;
}

.workspace-history-button:hover:not(:disabled),
.workspace-history-button:focus-visible {
    border-color: rgba(126, 155, 182, 0.52);
}

.workspace-history-button:hover:not(:disabled) {
    transform: translateY(-1px);
}

.workspace-history-button:focus-visible {
    outline: none;
    box-shadow:
        0 0 0 4px rgba(76, 154, 255, 0.16),
        var(--model-space-chip-shadow);
}

.workspace-history-button:disabled {
    opacity: 0.45;
    cursor: default;
    box-shadow: none;
}

.workspace-quick-tools {
    display: flex;
    align-items: center;
    align-content: flex-start;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 8px;
    width: 100%;
    padding: 4px 10px;
    border: 1px solid rgba(150, 177, 205, 0.18);
    border-radius: 18px;
    background: rgba(10, 19, 29, 0.3);
    box-shadow: 0 18px 34px rgba(7, 14, 22, 0.16);
    backdrop-filter: blur(8px);
}

.workspace-tool-shortcut {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    width: 36px;
    min-width: 36px;
    min-height: 36px;
    margin-top: 0;
    padding: 0;
    border: 0;
    border-top: 1px solid rgba(183, 205, 228, 0.24);
    border-radius: 14px;
    background: rgba(13, 24, 38, 0.76);
    color: #eef6ff;
    box-shadow: 0 14px 28px rgba(6, 12, 20, 0.2);
    white-space: nowrap;
    backdrop-filter: blur(10px);
    transition:
        transform 0.16s ease,
        box-shadow 0.16s ease,
        border-color 0.16s ease,
        background 0.16s ease,
        color 0.16s ease;
    flex: 0 0 auto;
}

.workspace-tool-shortcut:hover {
    transform: translateY(-1px);
    border-top-color: rgba(210, 226, 242, 0.34);
    background: rgba(19, 33, 50, 0.88);
    box-shadow: 0 18px 34px rgba(6, 12, 20, 0.24);
}

.workspace-tool-shortcut .tool-symbol {
    font-size: 15px;
    line-height: 1;
}

.workspace-tool-icon {
    width: 18px;
    height: 18px;
    display: block;
    object-fit: contain;
}

.workspace-tool-shortcut-label {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.workspace-tool-shortcut:focus-visible {
    outline: none;
    box-shadow:
        0 0 0 3px rgba(76, 154, 255, 0.22),
        0 18px 34px rgba(6, 12, 20, 0.24);
}

.workspace-tool-shortcut-delete {
    border-top-color: rgba(216, 179, 179, 0.34);
    background: rgba(86, 27, 27, 0.62);
    color: #ffd9d9;
}

.workspace-tool-shortcut-delete:hover {
    border-top-color: rgba(234, 198, 198, 0.42);
    background: rgba(108, 31, 31, 0.78);
}

.workspace-tool-shortcut.active-tool {
    border-top-color: rgba(126, 182, 255, 0.62) !important;
    background: linear-gradient(180deg, rgba(76, 154, 255, 0.3) 0%, rgba(46, 113, 194, 0.44) 100%) !important;
    color: #ffffff;
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.16),
        0 18px 34px rgba(27, 76, 135, 0.26);
}

.workspace-tool-shortcut-delete.active-tool {
    border-top-color: rgba(255, 171, 171, 0.62) !important;
    background: linear-gradient(180deg, rgba(180, 57, 57, 0.42) 0%, rgba(120, 31, 31, 0.66) 100%) !important;
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.14),
        0 18px 34px rgba(114, 28, 28, 0.3);
}

#canvas-stage[data-model-space-theme="light"] .workspace-tool-shortcut {
    border-top-color: rgba(119, 143, 169, 0.26);
    background: rgba(255, 255, 255, 0.92);
    color: #233447;
    box-shadow: 0 12px 24px rgba(49, 73, 102, 0.14);
}

#canvas-stage[data-model-space-theme="light"] .workspace-tool-shortcut:hover {
    background: rgba(255, 255, 255, 0.98);
    border-top-color: rgba(100, 127, 156, 0.36);
}

#canvas-stage[data-model-space-theme="light"] .workspace-tool-shortcut-delete {
    border-top-color: rgba(196, 142, 142, 0.42);
    background: rgba(255, 236, 236, 0.96);
    color: #8f3434;
}

#canvas-stage[data-model-space-theme="light"] .workspace-tool-shortcut-delete:hover {
    background: rgba(255, 228, 228, 1);
}

#canvas-stage[data-model-space-theme="light"] .workspace-quick-tools {
    border-color: rgba(122, 150, 181, 0.18);
    background: rgba(255, 255, 255, 0.52);
    box-shadow: 0 14px 28px rgba(49, 73, 102, 0.12);
}

.workspace-toolbar-bottom {
    display: flex;
    justify-content: flex-end;
    align-items: flex-end;
    width: 100%;
}

.workspace-export-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
    width: auto;
}

.workspace-export-open-button {
    width: auto;
    margin-top: 0;
    min-height: 38px;
    padding: 0 16px;
    border-radius: 999px;
    border: 1px solid var(--model-space-export-border);
    background: var(--model-space-export-bg);
    color: var(--model-space-export-text);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    white-space: nowrap;
    text-shadow: var(--model-space-export-text-shadow);
    box-shadow: inset 0 1px 0 var(--model-space-export-topline), var(--model-space-export-shadow);
    pointer-events: auto;
    transition:
        transform 0.16s ease,
        box-shadow 0.16s ease,
        background 0.16s ease,
        border-color 0.16s ease;
}

.workspace-export-secondary-button {
    width: auto;
    margin-top: 0;
    min-height: 34px;
    padding: 0 14px;
    border-radius: 999px;
    border: 1px solid rgba(116, 142, 171, 0.34);
    background: rgba(255, 255, 255, 0.88);
    color: #324457;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.02em;
    box-shadow: 0 10px 22px rgba(54, 93, 144, 0.12);
    backdrop-filter: blur(8px);
    pointer-events: auto;
}

.workspace-export-secondary-button:hover {
    border-color: rgba(84, 120, 170, 0.42);
    background: rgba(255, 255, 255, 0.96);
}

.workspace-export-secondary-button:focus-visible {
    outline: none;
    box-shadow: 0 0 0 4px rgba(76, 154, 255, 0.16);
}

.workspace-export-secondary-button:active {
    transform: translateY(0);
}

.workspace-3d-open-button.is-active {
    border-color: rgba(67, 123, 194, 0.52);
    background: rgba(224, 239, 255, 0.94);
    color: #1e3f67;
    box-shadow:
        0 14px 28px rgba(54, 93, 144, 0.16),
        0 0 0 1px rgba(67, 123, 194, 0.14);
}

.workspace-export-open-button:hover {
    border-color: var(--model-space-export-border);
    background: var(--model-space-export-hover-bg);
    transform: translateY(-1px);
    box-shadow:
        inset 0 1px 0 var(--model-space-export-topline),
        var(--model-space-export-hover-shadow),
        0 0 0 1px rgba(59, 130, 246, 0.18);
}

.workspace-export-open-button:focus-visible {
    outline: none;
    box-shadow: inset 0 1px 0 var(--model-space-export-topline), var(--model-space-export-shadow), var(--model-space-export-focus);
}

.workspace-export-open-button:active {
    transform: translateY(0);
}

#canvas-stage[data-model-space-theme="dark"] .workspace-export-secondary-button {
    border-color: rgba(109, 145, 184, 0.44);
    background: rgba(10, 18, 27, 0.84);
    color: #edf4fa;
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.32);
}

#canvas-stage[data-model-space-theme="dark"] .workspace-export-secondary-button:hover {
    background: rgba(13, 24, 37, 0.92);
}

#canvas-stage[data-model-space-theme="dark"] .workspace-3d-open-button.is-active {
    border-color: rgba(123, 163, 214, 0.62);
    background: rgba(22, 52, 83, 0.92);
    color: #f2f7fb;
}

#canvas-stage[data-model-space-theme="dark"] .workspace-history-button {
    border-color: rgba(109, 145, 184, 0.44);
    background: rgba(10, 18, 27, 0.84);
    color: #edf4fa;
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.32);
}

#canvas-stage[data-model-space-theme="dark"] .workspace-history-button:hover:not(:disabled),
#canvas-stage[data-model-space-theme="dark"] .workspace-history-button:focus-visible {
    border-color: rgba(141, 177, 216, 0.52);
}

.workspace-session-button {
    width: auto;
    margin-top: 0;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid rgba(49, 80, 110, 0.18);
    background: rgba(255, 255, 255, 0.9);
    color: var(--accent);
    font-size: 12px;
    font-weight: 700;
    white-space: nowrap;
    pointer-events: auto;
}

.workspace-session-button:hover {
    background: rgba(255, 255, 255, 1);
}

#canvas-stage[data-model-space-theme="dark"] .workspace-session-button {
    border-color: rgba(132, 158, 183, 0.32);
    background: rgba(19, 30, 40, 0.82);
    color: #edf4fa;
}

#canvas-stage[data-model-space-theme="dark"] .workspace-session-button:hover {
    background: rgba(29, 44, 59, 0.92);
}

.workspace-3d-overlay {
    position: fixed;
    inset: 104px 24px 24px auto;
    z-index: 1999;
    display: flex;
    justify-content: flex-end;
    width: min(480px, calc(100vw - 48px));
    max-width: calc(100vw - 48px);
    pointer-events: none;
}

.workspace-3d-overlay[hidden] {
    display: none;
}

.workspace-3d-drawer {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(170, 191, 214, 0.5);
    border-radius: 20px;
    background: rgba(252, 254, 255, 0.9);
    box-shadow: 0 24px 48px rgba(35, 53, 72, 0.2);
    backdrop-filter: blur(16px);
    overflow: hidden;
    pointer-events: auto;
}

.workspace-3d-header {
    padding-bottom: 18px;
}

.workspace-3d-body {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 18px 18px 20px;
}

.workspace-3d-copy,
.workspace-3d-summary {
    margin: 0;
    color: rgba(36, 50, 61, 0.74);
    font-size: 12px;
    line-height: 1.5;
}

.workspace-3d-toolbar {
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 10px;
    flex-wrap: wrap;
}

.workspace-3d-control {
    display: grid;
    gap: 6px;
}

.workspace-3d-control-label {
    padding-left: 4px;
    color: rgba(44, 58, 72, 0.72);
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.08em;
    line-height: 1;
    text-transform: uppercase;
}

.workspace-3d-scope {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px;
    border-radius: 999px;
    border: 1px solid rgba(168, 186, 207, 0.46);
    background: rgba(236, 243, 250, 0.92);
}

.workspace-3d-scope-button,
.workspace-3d-reset-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 34px;
    margin-top: 0;
    padding: 0 12px;
    border-radius: 999px;
    border: none;
    background: transparent;
    color: #324457;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.01em;
    white-space: nowrap;
}

.workspace-3d-scope-button:hover,
.workspace-3d-reset-button:hover {
    background: rgba(126, 155, 189, 0.14);
}

.workspace-3d-scope-button:disabled {
    cursor: not-allowed;
    opacity: 0.44;
}

.workspace-3d-scope-button:disabled:hover {
    background: transparent;
}

.workspace-3d-scope-button.is-active {
    background: linear-gradient(135deg, #dfeeff 0%, #cadcf3 100%);
    color: #1f3a58;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.72);
}

.workspace-3d-reset-button {
    border: 1px solid rgba(116, 142, 171, 0.34);
    background: rgba(255, 255, 255, 0.78);
    box-shadow: 0 10px 22px rgba(54, 93, 144, 0.08);
}

.workspace-3d-viewer {
    position: relative;
    flex: 1;
    min-height: 320px;
    border-radius: 16px;
    border: 1px solid rgba(164, 185, 207, 0.32);
    overflow: hidden;
    background:
        radial-gradient(circle at top, rgba(170, 203, 239, 0.36), transparent 56%),
        linear-gradient(180deg, rgba(246, 250, 254, 0.96) 0%, rgba(233, 241, 249, 0.98) 100%);
}

.workspace-3d-viewer canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.workspace-3d-status {
    position: absolute;
    left: 14px;
    right: 14px;
    top: 14px;
    z-index: 1;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid rgba(164, 185, 207, 0.26);
    background: rgba(255, 255, 255, 0.88);
    color: #223243;
    font-size: 12px;
    font-weight: 600;
    line-height: 1.45;
    backdrop-filter: blur(12px);
}

.workspace-3d-status[data-tone="error"] {
    border-color: rgba(205, 79, 79, 0.28);
    color: #8d3030;
}

.workspace-3d-status[data-tone="success"] {
    border-color: rgba(57, 146, 89, 0.24);
    color: #227044;
}

#canvas-stage[data-model-space-theme="dark"] .workspace-3d-drawer {
    border-color: rgba(109, 145, 184, 0.4);
    background: rgba(12, 21, 31, 0.9);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.34);
}

#canvas-stage[data-model-space-theme="dark"] .workspace-3d-scope {
    background: rgba(20, 33, 46, 0.9);
    border-color: rgba(109, 145, 184, 0.38);
}

#canvas-stage[data-model-space-theme="dark"] .workspace-3d-control-label {
    color: rgba(224, 235, 246, 0.68);
}

#canvas-stage[data-model-space-theme="dark"] .workspace-3d-scope-button {
    color: #dde8f4;
}

#canvas-stage[data-model-space-theme="dark"] .workspace-3d-scope-button:hover {
    background: rgba(56, 81, 108, 0.46);
}

#canvas-stage[data-model-space-theme="dark"] .workspace-3d-scope-button:disabled:hover {
    background: transparent;
}

#canvas-stage[data-model-space-theme="dark"] .workspace-3d-scope-button.is-active {
    background: linear-gradient(135deg, rgba(44, 83, 122, 0.96) 0%, rgba(28, 62, 101, 0.96) 100%);
    color: #f7fbff;
}

#canvas-stage[data-model-space-theme="dark"] .workspace-3d-reset-button {
    border-color: rgba(109, 145, 184, 0.38);
    background: rgba(10, 18, 27, 0.84);
    color: #edf4fa;
}

#canvas-stage[data-model-space-theme="dark"] .workspace-3d-reset-button:hover {
    background: rgba(13, 24, 37, 0.92);
}

#canvas-stage[data-model-space-theme="dark"] .workspace-3d-copy,
#canvas-stage[data-model-space-theme="dark"] .workspace-3d-summary {
    color: rgba(226, 236, 246, 0.78);
}

#canvas-stage[data-model-space-theme="dark"] .workspace-3d-viewer {
    border-color: rgba(109, 145, 184, 0.34);
    background:
        radial-gradient(circle at top, rgba(50, 82, 118, 0.36), transparent 56%),
        linear-gradient(180deg, rgba(10, 19, 28, 0.94) 0%, rgba(16, 28, 41, 0.96) 100%);
}

#canvas-stage[data-model-space-theme="dark"] .workspace-3d-status {
    background: rgba(9, 16, 24, 0.84);
    border-color: rgba(109, 145, 184, 0.28);
    color: #eef5fb;
}

.workspace-card {
    display: block;
    max-width: 380px;
    padding: 14px 16px;
    border: 1px solid var(--model-space-chip-border);
    border-radius: 20px;
    background: var(--model-space-chip-bg);
    color: var(--model-space-chip-text);
    backdrop-filter: blur(4px);
    box-shadow: var(--model-space-chip-shadow);
}

.workspace-selection-card {
    width: min(340px, 100%);
    border-color: rgba(72, 119, 180, 0.26);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.92) 0%, rgba(245, 249, 253, 0.86) 100%);
    box-shadow:
        0 14px 28px rgba(31, 41, 51, 0.1),
        0 0 0 1px rgba(59, 130, 246, 0.08);
}

.workspace-selection-card .workspace-kicker {
    margin-bottom: 4px;
    color: #597692;
}

.workspace-selection-card .workspace-title {
    font-size: 16px;
    line-height: 1.2;
}

.workspace-selection-card .workspace-note {
    margin-top: 6px;
    color: #526578;
}

.workspace-section-preview-card {
    width: min(360px, calc(100% - 4px));
    max-width: 360px;
    padding: 14px 16px 16px;
    border-color: rgba(72, 119, 180, 0.24);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.94) 0%, rgba(245, 249, 253, 0.9) 100%);
    box-shadow:
        0 18px 34px rgba(31, 41, 51, 0.12),
        0 0 0 1px rgba(59, 130, 246, 0.08);
}

.workspace-section-preview-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.workspace-section-preview-copy {
    min-width: 0;
}

.workspace-section-preview-copy .workspace-kicker {
    margin-bottom: 4px;
    color: #597692;
}

.workspace-section-preview-copy .workspace-title {
    font-size: 18px;
    line-height: 1.15;
}

.section-preview-pills {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 6px;
    max-width: 140px;
}

.section-preview-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 28px;
    padding: 0 10px;
    border: 1px solid rgba(84, 120, 170, 0.18);
    border-radius: 999px;
    background: rgba(228, 237, 246, 0.88);
    color: #28496f;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.section-preview-figure-shell {
    padding: 10px;
    border: 1px solid rgba(185, 201, 216, 0.72);
    border-radius: 16px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.92) 0%, rgba(240, 246, 252, 0.88) 100%);
    margin-top: 10px;
}

.section-preview-figure {
    min-height: 232px;
}

.section-preview-figure svg {
    display: block;
    width: 100%;
    height: auto;
}

.section-preview-summary {
    display: grid;
    gap: 8px;
}

.section-preview-row {
    display: grid;
    grid-template-columns: 86px minmax(0, 1fr);
    gap: 10px;
    align-items: start;
}

.section-preview-row-label {
    color: var(--text-soft);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.section-preview-row-value {
    color: var(--text);
    font-size: 12px;
    font-weight: 600;
    line-height: 1.4;
}

.section-preview-diagram-concrete {
    fill: rgba(255, 255, 255, 0.96);
    stroke: #334155;
    stroke-width: 2;
}

.section-preview-diagram-tie {
    fill: none;
    stroke: #2563eb;
    stroke-width: 2.2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.section-preview-diagram-bar {
    fill: #2563eb;
}

.section-preview-diagram-dim {
    stroke: rgba(71, 85, 105, 0.7);
    stroke-width: 1.2;
    stroke-linecap: round;
}

.section-preview-diagram-text {
    fill: #334155;
    font-family: "Aptos", "Segoe UI", sans-serif;
    font-size: 12px;
    font-weight: 700;
}

.section-preview-diagram-note {
    fill: #64748b;
    font-family: "Aptos", "Segoe UI", sans-serif;
    font-size: 11px;
    font-weight: 600;
}

.workspace-card .workspace-kicker {
    margin-bottom: 6px;
    color: var(--model-space-chip-text);
    opacity: 0.72;
}

.workspace-title {
    margin: 0;
    color: var(--model-space-chip-text);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.workspace-note {
    margin: 8px 0 0;
    color: var(--model-space-chip-text);
    font-size: 12px;
    line-height: 1.45;
    opacity: 0.86;
}

.insert-properties-dock {
    margin-top: auto;
    padding: 12px;
}

.insert-properties-dock .workspace-kicker {
    margin-bottom: 4px;
    font-size: 10px;
}

.insert-properties-title {
    margin: 0;
    color: var(--text);
    font-size: 16px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.insert-properties-dock .workspace-note {
    margin-top: 6px;
    font-size: 11px;
    line-height: 1.35;
}

.insert-properties-fields {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(136px, 1fr));
    gap: 8px 10px;
    margin-top: 10px;
}

.insert-properties-field {
    display: block;
    margin-top: 0;
    color: var(--text);
}

.insert-properties-field span {
    display: block;
    margin-bottom: 0;
    color: var(--text-soft);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    opacity: 1;
}

.insert-properties-field input,
.insert-properties-field select {
    margin-top: 4px;
    padding: 8px 10px;
    border-radius: 8px;
    background: var(--panel);
    font-size: 12px;
}

.insert-properties-field-wide {
    grid-column: 1 / -1;
}

.insert-properties-block {
    grid-column: 1 / -1;
}

.insert-properties-inline-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px 10px;
}

.insert-properties-dock label {
    margin-top: 8px;
    font-size: 10px;
}

.insert-properties-dock .inline-row {
    gap: 6px;
}

.insert-properties-dock .field-note {
    margin-top: 6px;
    font-size: 11px;
    line-height: 1.35;
}

.beam-main-rebar-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.beam-main-rebar-entry,
.beam-additional-rebar-entry {
    display: grid;
    gap: 6px;
}

.beam-main-rebar-inline,
.beam-main-rebar-entry .inline-row {
    display: grid;
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 4px;
    align-items: center;
    width: 100%;
    min-width: 0;
}

.beam-main-rebar-count-input,
.beam-main-rebar-entry input {
    width: 100%;
    min-width: 0;
}

.beam-main-rebar-count-input {
    max-width: 40px;
    padding-left: 4px;
    padding-right: 4px;
    text-align: center;
}

.beam-main-rebar-diameter-select,
.beam-main-rebar-entry select {
    width: 100%;
    min-width: 0;
}

.beam-main-rebar-entry > span,
.beam-additional-rebar-entry > span,
.beam-additional-rebar-zone {
    color: var(--text);
    font-size: 10px;
    font-weight: 700;
}

.beam-additional-rebar-body {
    display: grid;
    gap: 10px;
}

.beam-additional-rebar-row {
    display: grid;
    grid-template-columns: minmax(56px, 72px) minmax(0, 1fr) minmax(0, 1fr);
    gap: 10px;
    align-items: end;
}

.beam-additional-rebar-entry .inline-row,
.beam-additional-rebar-entry {
    margin-top: 0;
}

.beam-additional-rebar-entry input,
.beam-additional-rebar-entry select {
    width: 100%;
}

@media (max-width: 720px) {
    .beam-main-rebar-grid,
    .beam-additional-rebar-row {
        grid-template-columns: 1fr;
    }
}

.beam-section-details-block {
    margin-top: 8px;
}

.beam-section-add-button {
    width: 100%;
    margin-top: 0;
    font-size: 13px;
}

.beam-section-details-panel {
    margin-top: 8px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--panel-soft);
    overflow: hidden;
}

.beam-section-details-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    color: var(--text);
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
    list-style: none;
    user-select: none;
}

.beam-section-details-summary::-webkit-details-marker {
    display: none;
}

.beam-section-details-summary::after {
    content: "\203A";
    color: var(--text-soft);
    font-size: 14px;
    transition: transform 0.16s ease;
}

.beam-section-details-panel[open] .beam-section-details-summary::after {
    transform: rotate(90deg);
}

.beam-section-details-body {
    display: grid;
    gap: 8px;
    padding: 10px 12px 12px;
}

.beam-section-detail-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    align-items: end;
}

.beam-section-detail-field {
    margin-top: 0;
}

.beam-section-detail-field span {
    display: block;
    margin-bottom: 4px;
    color: var(--text-soft);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.beam-section-detail-input {
    margin-top: 0;
}

.beam-section-detail-delete {
    min-height: 36px;
    margin-top: 0;
    white-space: nowrap;
}

.reinforcement-panel {
    margin-top: 14px;
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    color: transparent;
}

.reinforcement-panel-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 9px 11px;
    color: var(--text);
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
    list-style: none;
    user-select: none;
    
}

.reinforcement-panel-summary::-webkit-details-marker {
    display: none;
}

.reinforcement-panel-summary::after {
    content: "\203A";
    color: var(--text-soft);
    font-size: 14px;
    transition: transform 0.16s ease;
}

.reinforcement-panel[open] .reinforcement-panel-summary::after {
    transform: rotate(90deg);
}

.reinforcement-panel.is-disabled {
    opacity: 0.62;
}

.reinforcement-panel.is-disabled .reinforcement-panel-summary {
    color: var(--text-soft);
    cursor: default;
}

.reinforcement-panel.is-disabled .reinforcement-panel-summary::after {
    opacity: 0.4;
}

.export-dock-main-summary {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    width: 100%;
    text-align: center;
    padding: 12px 0 10px;
    color: var(--text);
    background: transparent;
    box-shadow: none;
}

.export-dock-main-summary::after {
    content: "\2304";
    display: block;
    margin: 0 auto;
    justify-self: center;
    color: #b88a2f;
    font-size: 15px;
    font-weight: 700;
    line-height: 1;
    transform: none;
    transition: transform 0.16s ease;
}

.export-dock-main-menu[open] > .export-dock-main-summary::after {
    transform: rotate(180deg);
}

.quantities-content {
    display: grid;
    gap: 10px;
    max-height: min(60vh, 640px);
    overflow-y: auto;
    overscroll-behavior: contain;
    padding-right: 4px;
}

.quantities-summary-stack {
    display: grid;
    gap: 10px;
}

.quantities-detail-panel {
    margin-top: 0;
}

.quantities-summary-total {
    margin-left: 12px;
    color: var(--accent);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.quantities-detail-body {
    padding-top: 8px;
}

.quantities-group-list,
.quantities-item-list {
    display: grid;
    gap: 4px;
    max-height: 240px;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding-right: 0px;
}

.quantities-item-list {
    gap: 0;
    max-height: 220px;
    padding-right: 2px;
}

.quantities-group-panel {
    margin-top: 0;
    border-radius: 10px;
}

.quantities-group-panel .reinforcement-panel-summary {
    padding: 10px 12px;
    font-size: 11px;
}

.quantities-group-total {
    margin-left: 10px;
    color: var(--accent);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.quantities-item-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
    align-items: start;
    padding: 8px 0;
    border-top: 1px solid rgba(141, 160, 179, 0.18);
}

.quantities-item-row:first-child {
    padding-top: 0;
    border-top: 0;
}

.quantities-item-copy {
    min-width: 0;
}

.quantities-item-title {
    color: var(--text);
    font-size: 12px;
    font-weight: 700;
    line-height: 1.35;
}

.quantities-item-meta {
    margin-top: 2px;
    color: var(--text-soft);
    font-size: 10px;
    line-height: 1.35;
}

.quantities-item-value {
    color: var(--text);
    font-size: 12px;
    font-weight: 700;
    white-space: nowrap;
}

.quantities-empty-note {
    margin: 0;
}

.quantities-report-block {
    padding: 12px 14px 14px;
    border: 1px solid var(--border);
    border-radius: 12px;
}

.quantities-report-heading {
    margin-bottom: 0;
}

.quantities-report-copy {
    margin-top: 6px;
}

.quantities-report-list {
    display: grid;
    gap: 6px;
    margin-top: 8px;
}

.quantities-export-button {
    width: 100%;
    margin-top: 14px;
}

.quantities-export-modal-content {
    width: min(500px, 92vw);
    padding: 0;
    overflow: hidden;
}

.quantities-export-modal-panel {
    border: none;
    border-radius: 0;
    box-shadow: none;
}

.quantities-export-modal-panel .section-copy {
    display: block;
    margin-top: 8px;
}

.quantities-export-modal-panel .menu-chip {
    display: inline-flex;
}

.quantities-export-modal-button-stack {
    display: grid;
    gap: 10px;
    margin-top: 14px;
}

.quantities-export-modal-button-stack button {
    margin-top: 0;
}

.reinforcement-panel-body {
    padding: 0 14px 14px;
}

.reinforcement-panel-body .modal-subsection:first-child {
    margin-top: 0;
    padding-top: 0;
    border-top: 0;
}

.insert-properties-dock .modal-subsection {
    margin-top: 10px;
    padding-top: 8px;
}

.insert-properties-dock .reinforcement-panel {
    margin-top: 0;
    border-radius: 10px;
}

.insert-properties-dock .reinforcement-panel-summary {
    padding: 10px 12px;
    font-size: 11px;
}

.insert-properties-dock .reinforcement-panel-body {
    padding: 0 12px 12px;
}

.insert-properties-dock .beam-section-details-summary {
    padding: 9px 12px;
    font-size: 10px;
}

.insert-properties-dock .beam-section-details-body {
    gap: 6px;
    padding: 8px 12px 12px;
}

.insert-properties-dock .beam-section-detail-row {
    grid-template-columns: minmax(0, 1fr) 110px;
    gap: 6px;
}

.insert-properties-dock .beam-section-detail-field span {
    font-size: 8px;
}

.insert-properties-dock .beam-section-detail-input,
.insert-properties-dock .beam-section-detail-delete {
    min-height: 34px;
    height: 34px;
}

.insert-properties-dock .column-rebar-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin-top: 6px;
}

.insert-properties-dock .slab-solid-rebar-grid {
    grid-template-columns: 1fr;
    gap: 6px;
}

.insert-properties-dock .column-rebar-card {
    padding: 0;
    border-radius: 10px;
    min-width: 0;
}

.insert-properties-dock .slab-solid-rebar-card {
    padding: 8px 10px;
}

.insert-properties-dock .column-rebar-card-title {
    font-size: 11px;
}

.insert-properties-dock .column-checkbox-row {
    gap: 6px;
    margin-top: 6px;
    font-size: 11px;
}

.insert-properties-dock .column-checkbox-row input {
    width: 14px;
    height: 14px;
}

.insert-properties-dock .column-rebar-card .column-inline-row {
    display: grid;
    grid-template-columns: 40px minmax(0, 1fr);
    align-items: center;
    gap: 4px;
    width: 100%;
    min-width: 0;
}

.insert-properties-dock .column-rebar-card .column-inline-row.column-inline-row-full {
    grid-template-columns: minmax(0, 1fr);
}

.insert-properties-dock .column-inline-row {
    flex-direction: row;
    align-items: center;
    gap: 3px;
    flex-wrap: nowrap;
    min-width: 0;
}

.insert-properties-dock .column-inline-row > input,
.insert-properties-dock .column-inline-row > select,
.insert-properties-dock .slab-lightened-zone-grid-cell .slab-rebar-count-input,
.insert-properties-dock .slab-lightened-zone-grid-cell .slab-rebar-diameter-select {
    height: 36px;
    min-height: 36px;
    min-width: 0;
    max-width: 100%;
    box-sizing: border-box;
    padding-top: 0;
    padding-bottom: 0;
}

.insert-properties-dock .column-rebar-card .slab-solid-rebar-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 50px;
    gap: 6px;
}

.insert-properties-dock .column-bar-count-select {
    width: 40px;
    flex: 0 0 40px;
    padding-left: 4px;
    padding-right: 4px;
}

.insert-properties-dock .column-confinement-count-select {
    width: 100%;
    flex: 1 1 auto;
}

.insert-properties-dock .column-diameter-select {
    width: 100%;
    flex: 1 1 auto;
    min-width: 0;
    margin-top: 0;
    padding-left: 8px;
    padding-right: 22px;
}

.insert-properties-dock .slab-solid-diameter-select {
    width: 100%;
    min-width: 0;
}

.insert-properties-dock .slab-solid-spacing-input {
    width: 50px;
    min-width: 50px;
    margin-top: 0;
    padding-left: 6px;
    padding-right: 6px;
    text-align: center;
}

.insert-properties-dock .slab-rebar-inline {
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 6px;
}

.insert-properties-dock .slab-rebar-inline label {
    margin-top: 0;
    font-size: 11px;
}

.insert-properties-dock .slab-rebar-count-input {
    width: 62px;
    flex: 0 0 62px;
}

.insert-properties-dock .slab-lightened-zone-grid {
    grid-template-columns: 24px repeat(2, minmax(0, 1fr));
    gap: 4px 6px;
}

.insert-properties-dock .slab-lightened-zone-grid-cell {
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
}

.insert-properties-dock .slab-lightened-zone-grid-header,
.insert-properties-dock .slab-lightened-zone-grid-label {
    font-size: 8px;
    letter-spacing: 0;
}

.insert-properties-dock .slab-lightened-zone-grid-cell .inline-row {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 4px;
}

.insert-properties-dock .slab-lightened-zone-grid-cell .slab-rebar-count-input {
    width: 34px;
    flex: 0 0 34px;
    min-width: 34px;
    padding-left: 4px;
    padding-right: 4px;
    font-size: 11px;
}

.insert-properties-dock .slab-lightened-zone-grid-cell .slab-rebar-diameter-select {
    min-width: 0;
    font-size: 11px;
    padding-left: 6px;
    padding-right: 18px;
}

.insert-properties-dock .slab-temperature-controls {
    gap: 8px;
}

.insert-properties-dock .slab-direction-choice span {
    min-height: 30px;
    padding: 0 10px;
    font-size: 11px;
}

.insert-properties-dock .slab-temperature-angle-field span {
    font-size: 9px;
}

body[data-ui-theme="dark"] .insert-properties-field input,
body[data-ui-theme="dark"] .insert-properties-field select {
    border-color: #496176;
    background: #16222b;
    color: var(--text);
}

body[data-ui-theme="dark"] input[readonly] {
    background: #1b2933;
}

body[data-ui-theme="dark"] .insert-properties-block .column-rebar-card {
    border-color: #496176;
    background: transparent;
}

body[data-ui-theme="dark"] .slab-direction-choice span {
    border-color: #496176;
    background: #16222b;
    color: var(--text-soft);
}

body[data-ui-theme="dark"] .slab-direction-choice input:checked+span {
    border-color: rgba(96, 165, 250, 0.55);
    background: rgba(59, 130, 246, 0.2);
    color: var(--text);
}

.workspace-level-switch,
.model-space-theme-switch {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 36px;
    border: 1px solid var(--model-space-chip-border);
    border-radius: 999px;
    background: var(--model-space-chip-bg);
    color: var(--model-space-chip-text);
    font-size: 12px;
    font-weight: 700;
    backdrop-filter: blur(4px);
    box-shadow: var(--model-space-chip-shadow);
}

.workspace-level-switch {
    padding: 5px 6px 5px 10px;
    pointer-events: auto;
}

.workspace-level-copy {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    flex: 1 1 auto;
    overflow: hidden;
}

.model-space-theme-switch {
    width: auto;
    min-width: 0;
    margin: 0;
    padding: 5px 10px 5px 8px;
    justify-content: flex-start;
    pointer-events: auto;
}

.model-space-theme-switch-track {
    position: relative;
    width: 38px;
    height: 22px;
    flex-shrink: 0;
    border: 1px solid rgba(143, 164, 184, 0.38);
    border-radius: 999px;
    background: rgba(143, 164, 184, 0.22);
    transition: background 0.15s ease, border-color 0.15s ease;
}

.model-space-theme-switch-thumb {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    border-radius: 999px;
    background: #ffffff;
    box-shadow: 0 1px 2px rgba(23, 32, 42, 0.18);
    transition: transform 0.15s ease, background 0.15s ease;
}

.model-space-theme-switch[aria-checked="true"] .model-space-theme-switch-track {
    border-color: rgba(120, 177, 235, 0.44);
    background: rgba(120, 177, 235, 0.28);
}

.model-space-theme-switch[aria-checked="true"] .model-space-theme-switch-thumb {
    transform: translateX(16px);
}

.model-space-theme-label {
    white-space: nowrap;
}

.workspace-toolbar-switch-group {
    position: relative;
    display: inline-flex;
    flex: 0 0 auto;
}

.workspace-toolbar-switch-group.is-open .model-space-theme-switch {
    border-color: rgba(126, 155, 182, 0.6);
}

.workspace-light-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    z-index: 18;
    min-width: 210px;
    padding: 10px;
    border: 1px solid var(--model-space-chip-border);
    border-radius: 16px;
    background: var(--model-space-chip-bg);
    color: var(--model-space-chip-text);
    box-shadow: var(--model-space-chip-shadow), 0 18px 34px rgba(7, 14, 22, 0.18);
    backdrop-filter: blur(10px);
}

.workspace-light-menu[hidden] {
    display: none;
}

.workspace-label-filter-menu {
    display: grid;
    gap: 8px;
}

.workspace-label-filter-menu-title {
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    opacity: 0.72;
}

.workspace-label-filter-option {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 34px;
    padding: 0 2px;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
}

.workspace-label-filter-option input {
    width: 16px;
    height: 16px;
    margin: 0;
    accent-color: #4c9aff;
}

.workspace-label-filter-option span {
    white-space: nowrap;
}

.workspace-level-actions {
    display: flex;
    flex-direction: row;
    gap: 4px;
}

.workspace-level-button {
    width: 26px;
    min-width: 26px;
    min-height: 16px;
    margin: 0;
    padding: 0;
    border-radius: 999px;
    border-color: rgba(163, 177, 191, 0.44);
    background: rgba(255, 255, 255, 0.58);
    color: inherit;
    font-size: 13px;
    line-height: 1;
}

.workspace-level-button:hover,
.model-space-theme-switch:hover {
    border-color: rgba(126, 155, 182, 0.52);
}

.workspace-level-button:hover {
    background: rgba(255, 255, 255, 0.76);
}

#canvas-stage[data-model-space-theme="dark"] .model-space-theme-switch-track {
    border-color: rgba(151, 182, 214, 0.36);
    background: rgba(108, 154, 205, 0.22);
}

#canvas-stage[data-model-space-theme="dark"] .model-space-theme-switch-thumb {
    background: #f4f8fd;
}

#canvas-stage[data-model-space-theme="light"] .workspace-light-menu {
    background: rgba(255, 255, 255, 0.96);
    color: #233447;
    box-shadow: 0 14px 28px rgba(49, 73, 102, 0.14);
}

#canvas-stage[data-model-space-theme="dark"] .workspace-light-menu {
    background: rgba(17, 28, 40, 0.94);
    color: #eef6ff;
}

#canvas-stage[data-model-space-theme="dark"] .workspace-level-button {
    border-color: rgba(132, 158, 183, 0.32);
    background: rgba(255, 255, 255, 0.08);
}

#canvas-stage[data-model-space-theme="dark"] .workspace-level-button:hover {
    background: rgba(255, 255, 255, 0.14);
}

.workspace-level-label {
    min-width: 90px;
    padding: 0 4px;
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.workspace-level-height {
    min-width: 60px;
    padding: 0 4px;
    color: var(--model-space-chip-text);
    font-size: 11px;
    font-weight: 700;
    text-align: right;
    white-space: nowrap;
    opacity: 0.78;
}

#workspace-guide-overlay {
    position: fixed;
    inset: 0;
    z-index: 1180;
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    padding: 24px;
    background: rgba(11, 19, 28, 0.38);
    backdrop-filter: blur(4px);
}

#workspace-guide-overlay[hidden] {
    display: none !important;
}

.workspace-guide-card {
    width: min(380px, calc(100vw - 32px));
    padding: 18px 18px 16px;
    border: 1px solid rgba(115, 138, 163, 0.28);
    border-radius: 18px;
    background: rgba(247, 251, 255, 0.94);
    box-shadow: 0 24px 56px rgba(9, 17, 26, 0.22);
}

.workspace-guide-step {
    margin: 0;
    color: var(--accent);
    font-size: 12px;
    font-weight: 700;
    line-height: 1.4;
}

.workspace-guide-copy {
    margin: 10px 0 0;
    color: var(--text-soft);
    font-size: 13px;
    line-height: 1.55;
}

.workspace-guide-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    flex-wrap: wrap;
    margin-top: 16px;
}

.workspace-guide-actions button {
    width: auto;
    min-width: 0;
    margin-top: 0;
}

.is-onboarding-highlight {
    position: relative;
    z-index: 1190 !important;
    pointer-events: none !important;
    box-shadow:
        0 0 0 2px rgba(76, 154, 255, 0.88),
        0 0 0 8px rgba(76, 154, 255, 0.16),
        0 18px 34px rgba(9, 17, 26, 0.2) !important;
}

canvas {
    position: relative;
    z-index: 1;
    display: block;
    width: 100%;
    height: 100%;
    cursor: crosshair;
    background: transparent;
}

#mainCanvas {
    width: 100%;
    height: 100%;
    touch-action: none;
}

#utility-dock {
    position: fixed;
    right: 18px;
    bottom: 18px;
    z-index: 950;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

#language-switcher {
    position: static;
    z-index: auto;
    display: inline-flex;
    gap: 4px;
    padding: 4px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 10px 24px rgba(23, 32, 42, 0.14);
    backdrop-filter: blur(8px);
}

.language-switch-button {
    width: auto;
    min-width: 52px;
    min-height: 34px;
    margin-top: 0;
    padding: 7px 12px;
    border-radius: 999px;
    background: transparent;
    border-color: transparent;
    font-size: 12px;
    font-weight: 700;
}

.language-switch-button:hover {
    background: rgba(68, 93, 119, 0.08);
    border-color: transparent;
}

.language-switch-button.is-active {
    background: var(--accent);
    border-color: var(--accent);
    color: #ffffff;
}

#modal-overlay,
#export-modal-overlay,
#quantities-export-modal-overlay,
#preview-overlay,
#system-modal-overlay,
#billing-modal-overlay,
#app-dialog-overlay,
#project-picker-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: none;
    justify-content: center;
    align-items: center;
    background: var(--overlay);
    backdrop-filter: blur(4px);
}

.modal-content,
.preview-content {
    padding: 20px;
}

.system-modal-content {
    width: min(1080px, 96vw);
}

.export-modal-content {
    width: min(520px, 92vw);
    padding: 0;
    overflow: hidden;
}

.billing-modal-content {
    width: min(540px, 92vw);
}

.app-dialog-content {
    width: min(460px, 92vw);
}

.project-picker-content {
    width: min(620px, 94vw);
}

.export-modal-panel {
    border: none;
    border-radius: 0;
    box-shadow: none;
    padding:18px;
}

.export-modal-panel .section-copy {
    display: block;
    margin-top: 8px;
}

.export-modal-panel .menu-chip {
    display: inline-flex;
}

.export-modal-actions {
    margin-top: 0;
    padding: 0 20px 20px;
}

.app-dialog-message {
    margin-top: 0;
    white-space: pre-line;
}

.project-picker-note {
    margin-top: 0;
}

.project-picker-toolbar {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 14px;
}

.project-picker-list {
    display: grid;
    gap: 8px;
    margin-top: 10px;
    max-height: min(54vh, 420px);
    overflow-y: auto;
    padding-right: 4px;
}

.project-picker-item,
.project-picker-empty {
    border: 1px solid var(--border);
    border-radius: 10px;
    background: transparent;
}

.project-picker-item {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 4px 8px;
    align-items: center;
    padding: 6px 8px;
}

.project-picker-item.is-busy {
    opacity: 0.72;
}

.project-picker-item.is-current {
    border-color: var(--accent);
    background: var(--accent-soft);
}

.project-picker-copy {
    display: grid;
    gap: 2px;
    min-width: 0;
}

.project-picker-header {
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
}

.project-picker-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: nowrap;
    justify-content: flex-end;
}

#support-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    justify-content: flex-end;
    align-items: flex-end;
    background: transparent;
    backdrop-filter: none;
    pointer-events: none;
}

#support-overlay[hidden] {
    display: none;
}

.support-drawer {
    width: min(420px, calc(100vw - 32px));
    height: min(580px, calc(100vh - 180px));
    margin: 0 24px 150px 0;
    background: var(--panel);
    display: flex;
    flex-direction: column;
    border-radius: 12px;
    border: 1px solid var(--border);
    overflow: hidden;
    pointer-events: auto;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
    animation: slideUpChat 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.support-drawer-body {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 20px 20px 22px;
    overflow-y: auto;
}

.support-modal-copy,
.support-session-note,
.support-status-note {
    margin: 0;
    font-style: normal;
}

.support-form {
    display: flex;
    flex-direction: column;
}

.support-form-field {
    display: grid;
    gap: 6px;
}

.support-message-field {
    flex: 1;
    min-height: 0;
}

.support-form-field .field-label {
    margin: 0;
}

.support-form-field input,
.support-form-field textarea {
    margin-top: 0;
}

.support-form-field textarea {
    min-height: 220px;
    flex: 1;
    resize: none;
}

.support-status-note {
    min-height: 18px;
}

.support-status-note[data-tone="info"] {
    color: var(--text-soft);
}

.support-status-note[data-tone="success"] {
    color: var(--success);
}

.support-status-note[data-tone="error"] {
    color: var(--danger);
}

.support-drawer-actions {
    margin-top: auto;
    display: flex;
    justify-content: flex-end;
}

.support-drawer-actions .primary-btn {
    min-width: 160px;
}

.project-picker-actions .project-action-button {
    min-height: 28px;
    padding: 4px 8px;
    font-size: 11px;
}

.project-picker-name {
    color: var(--text);
    min-width: 0;
    overflow: hidden;
    font-size: 12px;
    font-weight: 700;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.project-picker-meta {
    margin-top: -1px;
    color: var(--text-soft);
    font-size: 9px;
    line-height: 1.2;
}

.project-picker-badge {
    display: inline-flex;
    align-items: center;
    min-height: 16px;
    margin-top: 0;
    padding: 0 5px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--panel-soft);
    color: var(--text-soft);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.project-picker-empty {
    padding: 12px;
    color: var(--text-soft);
    font-size: 12px;
    line-height: 1.5;
}

.project-action-button-danger {
    border-color: transparent;
    background: transparent;
    min-width: 30px;
    padding: 4px;
    color: var(--text-dim);
}

.project-action-button-danger:hover:not(:disabled) {
    color: var(--danger);
    background: var(--warning-soft);
    border-color: transparent;
}

.billing-modal-copy {
    margin-top: 0;
}

.billing-plan-grid {
    display: grid;
    gap: 10px;
    margin-top: 16px;
}

.billing-plan-button {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    margin-top: 0;
    padding: 14px;
    text-align: left;
    border-radius: 14px;
    border-color: #c3d3e5;
    background: linear-gradient(180deg, #f7fbff 0%, #edf4fb 100%);
}

.billing-plan-button.is-exhausted {
    border-color: rgba(111, 124, 138, 0.28);
    background: linear-gradient(180deg, #f5f7f9 0%, #eceff3 100%);
}

.billing-plan-button:hover {
    border-color: #9eb8d4;
    background: linear-gradient(180deg, #fcfeff 0%, #eef5fd 100%);
}

.billing-plan-button.is-exhausted:hover {
    border-color: rgba(111, 124, 138, 0.28);
    background: linear-gradient(180deg, #f5f7f9 0%, #eceff3 100%);
}

.billing-plan-button:disabled {
    border-color: var(--border);
    background: var(--panel-soft);
}

.billing-plan-name {
    color: var(--text);
    font-size: 14px;
    font-weight: 700;
}

.billing-plan-price {
    color: var(--accent);
    font-size: 16px;
    font-weight: 800;
}

.billing-plan-copy {
    color: var(--text-soft);
    font-size: 12px;
    line-height: 1.45;
}

.billing-modal-status {
    margin-top: 12px;
}

.billing-modal-actions {
    margin-top: 16px;
}

.system-modal-tabs {
    display: flex;
    gap: 10px;
    margin-top: 16px;
    margin-bottom: 18px;
}

.system-tab-button {
    width: auto;
    min-width: 132px;
    margin-top: 0;
    background: var(--panel);
    color: var(--text-soft);
}

.system-tab-button.is-active {
    border-color: #b9c9d8;
    background: var(--accent-soft);
    color: var(--accent);
}

.system-tab-panel {
    display: none;
}

.system-tab-panel.is-active {
    display: block;
}

.grid-modal-grid {
    display: grid;
    grid-template-columns: minmax(190px, 220px) minmax(0, 2fr);
    gap: 162px;
    align-items: start;
}

.grid-modal-form .inline-row {
    margin-top: 6px;
}

.grid-import-block {
    display: grid;
    gap: 6px;
    margin-top: 10px;
}

.grid-import-block button {
    margin-top: 0;
}

.etabs-help-steps {
    margin: 0;
    padding-left: 18px;
    display: grid;
    gap: 6px;
    color: var(--text);
    font-size: 12px;
    line-height: 1.45;
}

.etabs-help-footnote {
    display: block;
    margin-top: 8px;
    color: var(--text-dim);
    font-size: 11px;
    line-height: 1.45;
}

.grid-inline-row {
    align-items: stretch;
    gap: 8px;
}

.grid-inline-row input[type="number"] {
    flex: 0 0 124px;
    min-width: 124px;
}

.grid-inline-row .axis-type-select {
    width: 100%;
    min-width: 0;
}

.grid-axis-lists {
    justify-self: end;
    width: min(100%, 620px);
    margin-top: 0;
    margin-left: 18px;
    padding-top: 0;
    border-top: 0;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    max-height: 340px;
}

.grid-axis-panel {
    min-width: 0;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--panel-soft);
}

.grid-axis-panel .axis-item {
    background: var(--panel);
}

.grid-axis-panel.axis-list-spaced {
    margin-top: 0;
}

.overlay-kicker {
    color: var(--text-dim);
}

.modal-content {
    width: min(440px, 92vw);
    max-height: 84vh;
    overflow-y: auto;
}

.modal-content.system-modal-content {
    width: min(880px, 96vw);
}

.levels-modal-toolbar {
    margin-top: 0;
}

.levels-modal-toolbar button {
    margin-top: 0;
    width: auto;
    min-width: 180px;
}

.levels-manager-list {
    display: grid;
    gap: 8px;
    margin-top: 14px;
    max-height: min(58vh, 560px);
    overflow-y: auto;
    padding-right: 4px;
}

.level-manager-row {
    display: flex;
    align-items: center;
    gap: 10px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--panel-soft);
    padding: 9px 12px;
}

.level-manager-row.is-active {
    border-color: #b9c9d8;
    background: var(--accent-soft);
}

.level-manager-name-input {
    width: 140px;
    min-width: 120px;
    flex: 0 1 140px;
    margin-top: 0;
    padding: 8px 10px;
}

.level-manager-summary {
    flex: 1 1 110px;
    color: var(--text-soft);
    font-size: 12px;
    white-space: nowrap;
}

.level-manager-badge {
    display: inline-flex;
    align-items: center;
    min-height: 24px;
    padding: 0 8px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.75);
    color: var(--text-soft);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    white-space: nowrap;
}

.level-manager-height {
    display: flex;
    align-items: center;
    gap: 6px;
    width: 116px;
    flex: 0 0 116px;
}

.level-manager-height-input {
    margin-top: 0;
    padding: 8px 10px;
    text-align: right;
}

.level-manager-unit {
    color: var(--text-soft);
    font-size: 12px;
    font-weight: 600;
}

.level-manager-order {
    display: flex;
    gap: 6px;
    flex: 0 0 auto;
}

.level-manager-icon-button {
    width: 34px;
    min-width: 34px;
    min-height: 34px;
    padding: 0;
    margin-top: 0;
    font-size: 14px;
}

.level-manager-actions {
    display: flex;
    gap: 8px;
    margin-top: 0;
    flex: 0 0 auto;
}

.level-manager-button {
    width: auto;
    min-height: 34px;
    padding: 8px 10px;
    margin-top: 0;
    white-space: nowrap;
}

.level-manager-button-danger {
    border-color: #d8b3b3;
    background: #fbefef;
    color: var(--danger);
}

#modal-fields {
    padding-top: 4px;
}

#modal-fields label:first-child {
    margin-top: 0;
}

.modal-subsection {
    margin-top: 14px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
}

#modal-fields>.reinforcement-panel:first-child {
    margin-top: 0;
}

.column-rebar-grid {
    display: grid;
    gap: 10px;
    margin-top: 8px;
}

.slab-solid-rebar-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.column-rebar-card {
    padding: 0;
    border: 0;
    border-radius: 12px;
    background: transparent;
}

.column-rebar-card-wide {
    grid-column: 1 / -1;
}

.column-rebar-card.is-disabled {
    opacity: 0.72;
}

.column-rebar-card-title {
    color: var(--text);
    font-size: 12px;
    font-weight: 700;
}

.column-checkbox-row {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
    color: var(--text);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: normal;
    text-transform: none;
}

.column-checkbox-row input {
    width: 16px;
    height: 16px;
    margin: 0;
    accent-color: var(--accent);
}

.column-inline-row {
    margin-top: 8px;
    align-items: center;
}

.column-inline-row.column-inline-row-full {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
}

.column-inline-row > input,
.column-inline-row > select,
.slab-lightened-zone-grid-cell .slab-rebar-count-input,
.slab-lightened-zone-grid-cell .slab-rebar-diameter-select {
    height: 42px;
    min-height: 42px;
    box-sizing: border-box;
    padding-top: 0;
    padding-bottom: 0;
}

.slab-solid-rebar-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 56px;
    gap: 6px;
}

.column-bar-count-select {
    width: 72px;
    flex: 0 0 72px;
    margin-top: 0;
}

.column-confinement-count-select {
    width: 100%;
    flex: 1 1 auto;
}

.column-count-input {
    width: 108px;
    flex: 0 0 108px;
    margin-top: 0;
}

.column-diameter-select {
    width: auto;
    flex: 1 1 auto;
    min-width: 64px;
    margin-top: 0;
    padding-left: 12px;
    padding-right: 26px;
}

.slab-solid-diameter-select {
    width: 100%;
    min-width: 0;
}

.slab-solid-spacing-input {
    width: 56px;
    min-width: 56px;
    margin-top: 0;
    padding-left: 8px;
    padding-right: 8px;
    text-align: center;
}

.slab-cassette-row input {
    flex: 1 1 0;
    min-width: 0;
}

.slab-rebar-inline {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr);
    align-items: center;
    gap: 10px;
    margin-top: 8px;
}

.slab-rebar-inline label {
    margin: 0;
}

.slab-rebar-inline .inline-row {
    gap: 6px;
}

.slab-rebar-count-input {
    width: 80px;
    flex: 0 0 80px;
    margin-top: 0;
}

.slab-lightened-zone-grid {
    display: grid;
    grid-template-columns: max-content repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin-top: 8px;
    align-items: center;
}

.slab-lightened-zone-grid-header,
.slab-lightened-zone-grid-label {
    color: var(--text-soft);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    white-space: nowrap;
}

.slab-lightened-zone-grid-label {
    text-align: center;
}

.slab-lightened-zone-grid-cell {
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--panel);
}

.slab-lightened-zone-grid-cell .inline-row {
    display: grid;
    grid-template-columns: 52px minmax(84px, 1fr);
    align-items: center;
    gap: 6px;
}

.slab-lightened-zone-grid-cell .slab-rebar-count-input {
    width: 52px;
    flex: 0 0 52px;
    min-width: 52px;
    text-align: center;
}

.slab-lightened-zone-grid-cell .slab-rebar-diameter-select {
    margin-top: 0;
    width: 100%;
    min-width: 84px;
}

.slab-temperature-section {
    margin-top: 12px;
}

.slab-temperature-toggle {
    margin-top: 0;
}

.slab-temperature-controls {
    display: grid;
    gap: 10px;
    margin-top: 10px;
}

.slab-temperature-controls.is-disabled {
    opacity: 0.7;
}

.slab-temperature-mode-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.slab-direction-choice {
    position: relative;
    display: inline-flex;
    margin-top: 0;
    color: inherit;
    font-size: inherit;
    font-weight: inherit;
    letter-spacing: normal;
    text-transform: none;
}

.slab-direction-choice input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.slab-direction-choice span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 34px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--panel);
    color: var(--text-soft);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.slab-direction-choice input:checked+span {
    border-color: rgba(59, 130, 246, 0.55);
    background: rgba(59, 130, 246, 0.12);
    color: var(--text);
    box-shadow: inset 0 0 0 1px rgba(59, 130, 246, 0.1);
}

.slab-temperature-angle-field {
    display: grid;
    gap: 6px;
    margin-top: 0;
    color: inherit;
    font-size: inherit;
    font-weight: inherit;
    letter-spacing: normal;
    text-transform: none;
}

.slab-temperature-angle-field.is-disabled {
    opacity: 0.7;
}

.slab-temperature-angle-field span {
    display: block;
    margin-bottom: 0;
    color: var(--text-soft);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.slab-temperature-angle-field input {
    margin-top: 0;
}

.modal-title,
.preview-title {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
}

.preview-content {
    display: flex;
    flex-direction: column;
    width: min(1180px, 94vw);
    height: min(820px, 90vh);
}

.overlay-header {
    margin-bottom: 12px;
}

.preview-canvas {
    flex: 1;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #0d1218;
}

.close-preview-btn {
    margin-top: 12px;
}

.modal-actions {
    display: flex;
    gap: 10px;
    margin-top: 18px;
}

.modal-actions button {
    margin-top: 0;
}

.primary-btn {
    border-color: #b9c9d8;
    background: var(--accent-soft);
    color: var(--accent);
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    border: 2px solid transparent;
    border-radius: 999px;
    background: #c9d0d8;
    background-clip: padding-box;
}

body[data-ui-theme="dark"] #mode-dock {
    border-color: rgba(67, 86, 102, 0.96);
    background: linear-gradient(180deg, #18232d 0%, #22313d 100%);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.26);
}

body[data-ui-theme="dark"] .dock-button {
    background: #22313d;
    color: var(--text-soft);
    box-shadow: none;
}

body[data-ui-theme="dark"] .dock-button:hover {
    background: #2a3b48;
}

body[data-ui-theme="dark"] .dock-button.is-active {
    background: #355166;
    color: var(--text);
}

body[data-ui-theme="dark"] .dock-button.is-active:hover {
    background: #355166;
    color: var(--text);
}

body[data-ui-theme="dark"] #sidebar-mode-system,
body[data-ui-theme="dark"] #sidebar-mode-frame,
body[data-ui-theme="dark"] #sidebar-mode-slab,
body[data-ui-theme="dark"] #sidebar-mode-wall {
    border-color: rgba(96, 107, 118, 0.72);
}

body[data-ui-theme="dark"] #sidebar-mode-export {
    border-bottom-color: rgba(96, 107, 118, 0.72);
    background: #26313a;
    color: #d9b36a;
}

body[data-ui-theme="dark"] #sidebar-mode-export:hover {
    background: #2d3943;
    color: #e3c27f;
}

body[data-ui-theme="dark"] #sidebar-mode-export.is-active,
body[data-ui-theme="dark"] #sidebar-mode-export.is-active:hover {
    background: #342c1c;
    color: #f0ca8a;
}

body[data-ui-theme="dark"] #sidebar {
    border-color: rgba(67, 86, 102, 0.96);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

body[data-ui-theme="dark"] .menu-section {
    background: transparent;
    box-shadow: none;
}

body[data-ui-theme="dark"] .sidebar-dropdown-shell {
    background: transparent;
    border-color: transparent;
    box-shadow: none;
}

body[data-ui-theme="dark"] .export-item-row,
body[data-ui-theme="dark"] .export-frame-custom-option,
body[data-ui-theme="dark"] .export-frame-picker {
    border-color: rgba(95, 121, 143, 0.42);
}

body[data-ui-theme="dark"] .export-item-row,
body[data-ui-theme="dark"] .export-frame-custom-option {
    background: transparent;
}

body[data-ui-theme="dark"] .export-item-row + .export-item-row,
body[data-ui-theme="dark"] .export-frame-custom-option + .export-frame-custom-option {
    border-top-color: transparent;
}

body[data-ui-theme="dark"] .export-item-row + .export-item-row::before,
body[data-ui-theme="dark"] .export-frame-custom-option + .export-frame-custom-option::before {
    border-top-color: rgba(95, 121, 143, 0.24);
}

body[data-ui-theme="dark"] .export-frame-picker {
    background: rgba(28, 42, 53, 0.78);
}

body[data-ui-theme="dark"] .export-group-mode-button[data-mode="custom"] {
    border-color: rgba(240, 202, 138, 0.24);
    background: rgba(58, 49, 34, 0.92);
    color: #f0ca8a;
}

body[data-ui-theme="dark"] .export-group-mode-button[data-mode="all"],
body[data-ui-theme="dark"] .export-check-button[aria-pressed="true"] {
    background: rgba(156, 198, 240, 0.16);
}

body[data-ui-theme="dark"] .export-check-button[aria-pressed="true"] {
    background: transparent;
}

body[data-ui-theme="dark"] .menu-section-highlight {
    background: transparent;
}

body[data-ui-theme="dark"] .project-autosave-header input[type="checkbox"] {
    border-color: rgba(108, 132, 153, 0.56);
    background: linear-gradient(180deg, #243645 0%, #1d2d39 100%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

body[data-ui-theme="dark"] .project-autosave-header input[type="checkbox"]:hover {
    border-color: rgba(129, 158, 183, 0.72);
    background: linear-gradient(180deg, #2b4050 0%, #233544 100%);
}

body[data-ui-theme="dark"] .project-autosave-header input[type="checkbox"]:checked {
    border-color: #7f9fba;
    background: linear-gradient(180deg, #49677f 0%, #39566e 100%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

body[data-ui-theme="dark"] .project-autosave-header input[type="checkbox"]:focus-visible {
    outline-color: rgba(127, 159, 186, 0.28);
}

body[data-ui-theme="dark"] .project-picker-badge {
    border-color: #6484a2;
    background: rgba(156, 198, 240, 0.14);
    color: #e7f1fa;
}

body[data-ui-theme="dark"] button:hover {
    border-color: #566d80;
    background: var(--panel-soft);
}

body[data-ui-theme="dark"] #sidebar button:hover {
    border-color: #5b7690;
    background: linear-gradient(180deg, #2d4151 0%, #253847 100%);
}

body[data-ui-theme="dark"] [data-tool]::before {
    background: rgba(22, 33, 43, 0.98);
}

body[data-ui-theme="dark"] [data-tool]::after {
    background: rgba(22, 33, 43, 0.98);
    color: var(--text);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.32);
}

body[data-ui-theme="dark"] [data-tool] {
    box-shadow: 0 12px 22px rgba(0, 0, 0, 0.2);
}

body[data-ui-theme="dark"] [data-tool]:hover {
    box-shadow: 0 16px 28px rgba(0, 0, 0, 0.3);
}

body[data-ui-theme="dark"] .grid-system-launch {
    background: linear-gradient(180deg, #344b5e 0%, #2b3d4d 100%);
    border-color: #56748d;
    color: #e7f1fa;
}

body[data-ui-theme="dark"] .import-help-toggle {
    border-color: #56748d;
    background: rgba(23, 35, 45, 0.92);
    color: #e7f1fa;
}

body[data-ui-theme="dark"] .import-help-toggle:hover {
    border-color: #6d8ba6;
    background: #223240;
}

body[data-ui-theme="dark"] .import-action-wrap.is-help-open .import-help-toggle {
    border-color: #7fa4c6;
    background: #355166;
}

body[data-ui-theme="dark"] .etabs-help-popover {
    border-color: #496176;
    background: #16222b;
    color: var(--text);
    box-shadow: 0 22px 48px rgba(0, 0, 0, 0.42);
}

body[data-ui-theme="dark"] .etabs-help-title {
    color: #dceaf6;
}

body[data-ui-theme="dark"] .etabs-help-footnote {
    color: #a7bacb;
}

body[data-ui-theme="dark"] .grid-system-launch-secondary,
body[data-ui-theme="dark"] .btn-preview,
body[data-ui-theme="dark"] .billing-plan-button {
    border-color: #56748d;
    background: linear-gradient(180deg, #2d4253 0%, #253746 100%);
    color: #e7f1fa;
}

body[data-ui-theme="dark"] .btn-export {
    border-color: rgba(102, 154, 219, 0.52);
    background: linear-gradient(180deg, #20456c 0%, #18344f 100%);
    color: #f3f8fc;
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.28);
}

body[data-ui-theme="dark"] .btn-preview:hover,
body[data-ui-theme="dark"] .btn-export:hover,
body[data-ui-theme="dark"] .billing-plan-button:hover {
    background: linear-gradient(180deg, #365066 0%, #2c4153 100%);
}

body[data-ui-theme="dark"] .btn-export:hover {
    border-color: rgba(122, 174, 248, 0.62);
    background: linear-gradient(180deg, #27517f 0%, #1d4062 100%);
}

body[data-ui-theme="dark"] .billing-plan-button.is-exhausted,
body[data-ui-theme="dark"] .billing-plan-button.is-exhausted:hover {
    border-color: #4e6274;
    background: linear-gradient(180deg, #223240 0%, #1b2834 100%);
}

body[data-ui-theme="dark"] .billing-plan-price {
    color: #9cc2ff;
}

body[data-ui-theme="dark"] [data-tool="delete"],
body[data-ui-theme="dark"] .btn-del-axis,
body[data-ui-theme="dark"] .level-manager-button-danger {
    border-color: #6c464d;
    background: #3a2328;
    color: #ffbcc0;
}

body[data-ui-theme="dark"] .active-tool {
    border-color: #7aaef8 !important;
    background: linear-gradient(180deg, #29435a 0%, #20384b 100%) !important;
    color: #eff7ff;
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.08),
        0 16px 28px rgba(12, 23, 32, 0.32);
}

body[data-ui-theme="dark"] .item-row.is-active,
body[data-ui-theme="dark"] .level-manager-row.is-active,
body[data-ui-theme="dark"] .system-tab-button.is-active,
body[data-ui-theme="dark"] .primary-btn {
    border-color: #6484a2;
    background: var(--accent-soft);
    color: var(--text);
}

body[data-ui-theme="dark"] .primary-btn:hover {
    border-color: #7092b0;
    background: #355166;
    color: var(--text);
}

body[data-ui-theme="dark"] .level-manager-badge {
    border-color: var(--border);
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-soft);
}

body[data-ui-theme="dark"] .model-space-theme-switch:hover {
    background: var(--model-space-chip-bg);
}

body[data-ui-theme="dark"] .workspace-selection-card {
    border-color: rgba(117, 159, 207, 0.28);
    background: linear-gradient(180deg, rgba(17, 29, 40, 0.92) 0%, rgba(20, 36, 50, 0.88) 100%);
    box-shadow:
        0 16px 34px rgba(0, 0, 0, 0.34),
        0 0 0 1px rgba(76, 154, 255, 0.12);
}

body[data-ui-theme="dark"] .workspace-selection-card .workspace-kicker {
    color: #99badb;
}

body[data-ui-theme="dark"] .workspace-selection-card .workspace-note {
    color: #c8d9ea;
}

#canvas-stage[data-model-space-theme="dark"] .workspace-section-preview-card {
    border-color: rgba(117, 159, 207, 0.28);
    background: linear-gradient(180deg, rgba(17, 29, 40, 0.94) 0%, rgba(20, 36, 50, 0.9) 100%);
    box-shadow:
        0 20px 44px rgba(0, 0, 0, 0.38),
        0 0 0 1px rgba(76, 154, 255, 0.1);
}

#canvas-stage[data-model-space-theme="dark"] .workspace-section-preview-copy .workspace-kicker {
    color: #99badb;
}

#canvas-stage[data-model-space-theme="dark"] .section-preview-pill {
    border-color: rgba(117, 159, 207, 0.24);
    background: rgba(36, 57, 76, 0.84);
    color: #dce9f5;
}

#canvas-stage[data-model-space-theme="dark"] .section-preview-figure-shell {
    border-color: rgba(73, 97, 118, 0.76);
    background: linear-gradient(180deg, rgba(21, 34, 45, 0.92) 0%, rgba(17, 28, 39, 0.88) 100%);
}

#canvas-stage[data-model-space-theme="dark"] .section-preview-row-value {
    color: #edf4fa;
}

#canvas-stage[data-model-space-theme="dark"] .section-preview-diagram-concrete {
    fill: rgba(17, 29, 40, 0.94);
    stroke: #c8d9ea;
}

#canvas-stage[data-model-space-theme="dark"] .section-preview-diagram-tie {
    stroke: #7db6ff;
}

#canvas-stage[data-model-space-theme="dark"] .section-preview-diagram-bar {
    fill: #7db6ff;
}

#canvas-stage[data-model-space-theme="dark"] .section-preview-diagram-dim {
    stroke: rgba(188, 205, 222, 0.72);
}

#canvas-stage[data-model-space-theme="dark"] .section-preview-diagram-text {
    fill: #edf4fa;
}

#canvas-stage[data-model-space-theme="dark"] .section-preview-diagram-note {
    fill: #b6cada;
}

body[data-ui-theme="dark"] .workspace-guide-card {
    border-color: rgba(117, 159, 207, 0.26);
    background: rgba(17, 29, 40, 0.94);
    box-shadow: 0 28px 60px rgba(0, 0, 0, 0.4);
}

body[data-ui-theme="dark"] .workspace-guide-copy {
    color: #c6d7e8;
}

body[data-ui-theme="dark"] #language-switcher {
    background: rgba(15, 24, 32, 0.9);
    border-color: var(--border-strong);
}

body[data-ui-theme="dark"] .language-switch-button:hover {
    background: rgba(156, 198, 240, 0.12);
}

body[data-ui-theme="dark"] ::-webkit-scrollbar-thumb {
    background: #435766;
}

@media (max-width: 1100px) {
    #sidebar {
        width: 320px;
    }
}

@media (max-width: 900px) {

    html,
    body {
        overflow: auto;
    }

    .landing-page,
    .utility-page {
        padding: 14px 14px 6px;
    }

    .simple-landing {
        min-height: auto;
        padding: 44px 0 28px;
    }

    #app {
        flex-direction: column;
        min-height: 100vh;
    }

    #sidebar {
        width: 100%;
    }

    #mode-dock {
        width: 100%;
        flex-direction: row;
        gap: 0;
        padding: 8px;
        border-top-right-radius: 18px;
        border-bottom-left-radius: 0;
    }

    .dock-button {
        width: auto;
        flex: 1 1 0;
        min-height: 44px;
        writing-mode: horizontal-tb;
        transform: none;
    }


    #sidebar-mode-system {
        margin-top: 0;
    }

    .dock-button:not(#sidebar-mode-manage) {
        border-bottom-right-radius: 0;
    }

    #sidebar-mode-export {
        margin: 0;
        min-height: 44px;
        border-radius: 0;
    }

    .sidebar-shell {
        height: auto;
        max-height: none;
    }

    #workspace {
        min-height: 58vh;
    }

    .grid-modal-grid,
    .grid-axis-lists {
        grid-template-columns: 1fr;
    }

    .grid-axis-lists {
        max-height: none;
    }

    .preview-content {
        width: 96vw;
        height: 88vh;
    }

    .system-modal-tabs {
        flex-wrap: wrap;
    }

    .level-manager-row {
        flex-wrap: wrap;
    }

    .level-manager-name-input {
        flex: 1 1 140px;
        min-width: 120px;
    }

    .level-manager-summary {
        min-width: 140px;
    }
}

@media (max-width: 640px) {
    .project-picker-item {
        grid-template-columns: 1fr;
    }

    .project-picker-actions {
        justify-content: flex-start;
        flex-wrap: wrap;
    }
}

@media (max-width: 640px) {

    .simple-landing-card,
    .utility-card {
        padding: 22px 18px;
        border-radius: 24px;
    }

    .simple-landing-actions,
    .simple-landing-links,
    .utility-links,
    .auth-session-actions {
        flex-direction: column;
        gap: 12px;
    }

    .simple-landing-actions .landing-button,
    .auth-session-actions .landing-button,
    .auth-session-button {
        width: 100%;
    }

    #app {
        gap: 10px;
        padding: 10px;
    }

    .inline-row,
    .modal-actions,
    .level-manager-actions,
    .project-actions,
    .project-picker-toolbar {
        flex-direction: column;
    }

    .level-manager-row {
        align-items: stretch;
    }

    .level-manager-name-input,
    .level-manager-height {
        width: 100%;
        flex-basis: 100%;
    }

    .level-manager-order {
        width: 100%;
        flex-direction: column;
        justify-content: flex-start;
    }

    .column-count-input {
        width: 100%;
        flex-basis: 100%;
    }

    .column-bar-count-select {
        width: 72px;
        flex-basis: 72px;
    }

    .column-confinement-count-select {
        width: 100%;
        flex-basis: 100%;
    }

    .slab-cassette-row,
    .slab-rebar-inline .inline-row {
        flex-direction: row;
    }

    .slab-rebar-count-input {
        width: 80px;
        flex-basis: 80px;
    }

    .level-manager-icon-button,
    .level-manager-button,
    .levels-modal-toolbar button,
    .system-tab-button,
    .project-action-button {
        width: 100%;
    }

    .axis-type-select {
        width: 100%;
    }

    .export-mode-switch {
        grid-template-columns: 1fr;
    }

    .workspace-overlay {
        inset: 72px 10px auto 10px;
    }

    .workspace-quick-tools-overlay {
        inset: 10px 10px auto 10px;
        width: auto;
        max-width: none;
    }

    .workspace-panel-stack {
        width: 100%;
        max-width: none;
    }

    .workspace-selection-card {
        width: 100%;
        max-width: none;
    }

    .workspace-bottom-overlay {
        inset: auto 10px 148px 10px;
        justify-content: flex-end;
    }

    .workspace-section-preview-card {
        width: 100%;
        max-width: none;
    }

    .insert-properties-dock {
        padding: 12px;
    }

    .workspace-toolbar {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }

    .workspace-toolbar-top {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }

    .workspace-toolbar-secondary,
    .workspace-toolbar-bottom {
        width: 100%;
    }

    .workspace-toolbar-secondary {
        flex-direction: column;
        align-items: stretch;
        overflow: visible;
    }

    .workspace-quick-tools {
        width: 100%;
        flex-wrap: nowrap;
        padding-right: 0;
        overflow-x: auto;
        overflow-y: hidden;
        scrollbar-width: none;
    }

    .workspace-quick-tools::-webkit-scrollbar {
        display: none;
    }

    .workspace-tool-shortcut {
        flex: 0 0 auto;
        justify-content: center;
    }

    .workspace-export-open-button,
    .workspace-export-secondary-button,
    .model-space-theme-switch,
    .workspace-level-switch {
        width: 100%;
        justify-content: space-between;
    }

    .workspace-export-actions {
        width: 100%;
    }

    .workspace-3d-overlay {
        inset: 212px 10px 16px 10px;
        width: auto;
        max-width: none;
    }

    .workspace-3d-toolbar {
        align-items: stretch;
    }

    .workspace-3d-control {
        width: 100%;
    }

    .workspace-3d-scope,
    .workspace-3d-reset-button {
        width: 100%;
    }

    .workspace-3d-scope {
        justify-content: space-between;
    }

    .workspace-3d-scope-button {
        flex: 1 1 0;
        justify-content: center;
    }

    .workspace-3d-viewer {
        min-height: 260px;
    }

    .workspace-level-label {
        min-width: 0;
        flex: 1 1 auto;
    }

    .workspace-section-preview-header {
        flex-direction: column;
        align-items: stretch;
    }

    .section-preview-pills {
        max-width: none;
        justify-content: flex-start;
    }

    .section-preview-row {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    #workspace-guide-overlay {
        align-items: flex-end;
        justify-content: stretch;
        padding: 12px;
    }

    .workspace-guide-card {
        width: 100%;
    }

    #utility-dock {
        right: 12px;
        bottom: 12px;
        gap: 8px;
    }
}

/* Survey Modal */
#survey-overlay {
    display: flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    z-index: 10000;
}

#survey-overlay[hidden] {
    display: none;
}

.survey-content {
    max-width: 440px;
    width: 90%;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
    animation: surveyFadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes surveyFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(10px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.survey-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 24px;
}

.survey-option-btn {
    width: 100%;
    padding: 14px 20px;
    text-align: left;
    background: var(--panel-soft);
    border: 1px solid var(--border-strong);
    border-radius: 12px;
    color: var(--text);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.survey-option-btn:hover {
    background: var(--accent-soft);
    border-color: var(--accent);
    transform: translateX(6px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

body[data-ui-theme="dark"] .survey-content {
    background: linear-gradient(180deg, #1d2d39 0%, #16222b 100%);
    border-color: rgba(117, 159, 207, 0.3);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6);
}

body[data-ui-theme="dark"] .survey-option-btn {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.1);
    color: #e7f1fa;
}

body[data-ui-theme="dark"] .survey-option-btn:hover {
    background: rgba(156, 198, 240, 0.15);
    border-color: #6484a2;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Always visible Language Switcher & Utility Dock */
#language-switcher {
    position: fixed !important;
    bottom: 24px !important;
    right: 24px !important;
    z-index: 9999 !important;
    background: var(--panel) !important;
    border: 1px solid var(--border) !important;
    border-radius: 10px !important;
    padding: 4px !important;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15) !important;
    display: flex !important;
    gap: 2px !important;
}

#utility-dock {
    position: fixed !important;
    bottom: 24px !important;
    right: 24px !important;
    z-index: 9999 !important;
    background: transparent !important;
    border: none !important;
    padding: 0 !important;
    box-shadow: none !important;
}

#utility-dock div#language-switcher {
    position: relative !important;
    bottom: 0 !important;
    right: 0 !important;
}

@media (max-width: 640px) {

    #language-switcher,
    #utility-dock {
        bottom: 16px !important;
        right: 16px !important;
    }
}

/* Floating support and AI FABs */
.workspace-fab-cluster {
    position: fixed;
    right: 24px;
    bottom: 80px;
    z-index: 10001;
    display: flex;
    align-items: center;
    gap: 12px;
}

.support-fab,
.ai-chat-fab {
    position: static;
    width: 56px;
    height: 56px;
    margin-top: 0;
    padding: 0;
    border-radius: 50%;
    border: none;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.support-fab {
    background: linear-gradient(135deg, #d89a21 0%, #b97316 100%);
    box-shadow:
        0 4px 16px rgba(185, 115, 22, 0.36),
        0 8px 32px rgba(0, 0, 0, 0.15);
}

.ai-chat-fab {
    background: linear-gradient(135deg, #7b5aff 0%, #5a3cf5 100%);
    box-shadow:
        0 4px 16px rgba(90, 60, 245, 0.4),
        0 8px 32px rgba(0, 0, 0, 0.15);
}

.support-fab:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow:
        0 6px 20px rgba(185, 115, 22, 0.44),
        0 12px 40px rgba(0, 0, 0, 0.2);
}

.ai-chat-fab:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow:
        0 6px 20px rgba(90, 60, 245, 0.5),
        0 12px 40px rgba(0, 0, 0, 0.2);
}

.support-fab:active,
.ai-chat-fab:active {
    transform: scale(0.95);
}

.support-fab svg,
.ai-chat-fab svg {
    width: 24px;
    height: 24px;
}

.support-fab-icon {
    width: 28px;
    height: 28px;
    display: block;
    object-fit: contain;
}

/* AI Chat Overlay */
#ai-chat-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    justify-content: flex-end;
    align-items: flex-end;
    pointer-events: none;
}

#ai-chat-overlay[hidden] {
    display: none;
}

.ai-chat-drawer {
    width: min(400px, calc(100vw - 32px));
    height: min(600px, calc(100vh - 180px));
    margin: 0 24px 150px 0; /* floating above the FAB at 80px */
    background: var(--panel);
    display: flex;
    flex-direction: column;
    border-radius: 12px;
    border: 1px solid var(--border);
    overflow: hidden;
    pointer-events: auto;
    box-shadow: 0 12px 40px rgba(0,0,0,0.2);
    animation: slideUpChat 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUpChat {
    from { 
        transform: translateY(40px); 
        opacity: 0;
    }
    to { 
        transform: translateY(0); 
        opacity: 1;
    }
}

.overlay-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.overlay-kicker {
    margin: 0 0 6px 0;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.2px;
    color: var(--primary);
    text-transform: uppercase;
}

.overlay-header .modal-title {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-bright, #fff);
    padding-right: 36px;
    line-height: 1.3;
}

.ai-chat-close-btn {
    width: 32px;
    height: 32px;
    position: absolute;
    right: 16px;
    top: 16px;
    background: transparent;
    border: none;
    font-size: 24px;
    color: var(--text-dim);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    box-shadow: none;
    margin: 0;
}

.ai-chat-close-btn:hover {
    background: var(--panel-soft);
    color: var(--text);
}

.ai-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.ai-chat-message {
    max-width: 85%;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 13px;
    line-height: 1.5;
    word-break: break-word;
    white-space: pre-wrap;
}

.ai-chat-message p {
    margin: 0;
}

.ai-chat-message.system {
    align-self: flex-start;
    background: linear-gradient(135deg, #f0e7ff 0%, #e6d6ff 100%);
    color: #3b2a75;
    border-bottom-left-radius: 4px;
}

.ai-chat-message.user {
    align-self: flex-end;
    background: var(--accent);
    color: #fff;
    border-bottom-right-radius: 4px;
}

.ai-chat-message-image {
    max-width: 100%;
    border-radius: 8px;
    margin-bottom: 8px;
}

.ai-chat-input-area {
    padding: 16px;
    border-top: 1px solid var(--border);
    background: var(--panel);
}

.ai-chat-attachment-preview {
    display: inline-block;
    position: relative;
    margin-bottom: 8px;
}

#ai-chat-image-preview {
    height: 60px;
    border-radius: 8px;
    object-fit: cover;
    border: 1px solid var(--border);
}

.ai-chat-remove-attachment {
    position: absolute;
    top: -6px;
    right: -6px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--danger);
    color: white;
    border: none;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.ai-chat-input-row {
    display: flex;
    gap: 8px;
    align-items: flex-end;
}

.ai-chat-attach-btn {
    flex: 0 0 auto;
    width: 40px;
    height: 40px;
    padding: 0;
    margin: 0;
    background: var(--panel-soft);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--text);
    cursor: pointer;
    border-radius: 10px;
}

#ai-chat-input {
    flex: 1;
    min-height: 40px;
    max-height: 120px;
    margin: 0;
    padding: 10px 12px;
    resize: none;
    background: var(--panel-soft);
    border: 1px solid var(--border-strong);
    border-radius: 10px;
    font-size: 13px;
    color: var(--text);
}

.ai-chat-send-btn {
    flex: 0 0 auto;
    width: auto;
    height: 40px;
    margin: 0;
    padding: 0 16px;
    background: linear-gradient(135deg, #7b5aff 0%, #5a3cf5 100%);
    color: white;
    border: none;
    font-weight: 600;
}

.ai-chat-send-btn:hover {
    background: linear-gradient(135deg, #8b6aff 0%, #6a4cf5 100%);
}

.ai-chat-send-btn:disabled {
    background: var(--panel-soft);
    color: var(--text-dim);
}

body[data-ui-theme="dark"] .ai-chat-message.system {
    background: linear-gradient(135deg, #2d1b4d 0%, #1a0f2e 100%);
    color: #e0d4ff;
}

body[data-ui-theme="dark"] .ai-chat-drawer {
    box-shadow: -10px 0 30px rgba(0,0,0,0.5);
}

.ai-chat-loading {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 12px 18px;
    min-height: 44px;
}

.ai-chat-loading-dots {
    display: flex;
    align-items: center;
    gap: 6px;
}

.ai-chat-loading-dots span {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #7b5aff;
    animation: aiChatBounce 1.4s infinite ease-in-out both;
}

.ai-chat-loading-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.ai-chat-loading-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

.ai-chat-loading-dots span:nth-child(3) {
    animation-delay: 0s;
}

@keyframes aiChatBounce {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.4;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}


/* Restructured Gestionar Menu Styles */

.project-field-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 4px;
}

.project-field-group .field-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-soft);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.project-name-input-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
}

.project-name-input {
    flex: 1;
    min-width: 0;
    height: 32px;
    padding: 0 10px;
    border: 1px solid rgba(163, 177, 191, 0.32);
    border-radius: 8px;
    color: var(--text);
    font-size: 12px;
    transition: all 0.2s ease;
}

.project-name-input:focus {
    outline: none;
}

.project-field-input {
    width: 100%;
    height: 32px;
    padding: 0 10px;
    border: 1px solid rgba(163, 177, 191, 0.24);
    border-radius: 6px;
    color: var(--text);
    font-size: 12px;
    transition: all 0.2s ease;
}

.project-field-input:focus {
    outline: none;
}


.project-field-icon-btn {
    width: 30px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    border: 1px solid rgba(163, 177, 191, 0.24);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.52);
    color: var(--text-soft);
    cursor: pointer;
    transition: all 0.2s ease;
}

.project-field-icon-btn:hover {
    background: #ffffff;
    color: var(--accent);
    border-color: var(--accent-soft);
}

.project-status-row {
    margin: 8px 0;
}

.project-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 12px;
}

.project-action-button {
    width: 100%;
    height: 32px;
    font-size: 12px;
    font-weight: 600;
}

/* Preferences Styling */
.project-pref-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
}

.project-pref-group .field-label {
    color: var(--text);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.project-pref-group.is-disabled {
    opacity: 0.5;
    pointer-events: none;
}

.sidebar-language-switcher {
    display: flex;
    gap: 4px;
    padding: 3px;
    border-radius: 8px;
}

.sidebar-language-switcher .language-switch-button {
    min-width: 42px;
    min-height: 28px;
    padding: 4px 8px;
    font-size: 11px;
}

.project-autosave-group {
    padding-top: 10px;
    border-top: 1px solid rgba(163, 177, 191, 0.16);
    margin-top: 6px;
}

.project-autosave-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 6px 0;
}

.project-autosave-header label {
    font-size: 12px;
    color: var(--text);
}

.field-note {
    font-size: 11px;
    color: var(--text-soft);
    font-style: italic;
}

.project-picker-list {
    margin-top: 8px;
}

#canvas-stage[data-model-space-theme="dark"] .project-name-input,
#canvas-stage[data-model-space-theme="dark"] .project-field-input,
#canvas-stage[data-model-space-theme="dark"] .project-field-icon-btn {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.12);
    color: #e2e8f0;
}

#canvas-stage[data-model-space-theme="dark"] .project-field-icon-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #3b82f6;
}