/**
 * Turnifure Studio Stylesheet
 * Location: public/studio/css/studio.css
 * Version: 1.4.0-beta
 */

/* ==========================================================================
   1. Theme Tokens & Global CSS Variables
   ========================================================================== */
:root {
    --m3-font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-family: var(--m3-font-family);

    --studio-modal-bg: #ffffff;
    --studio-modal-text: #0f172a;
    --studio-modal-border: #d8e1ea;
    --studio-modal-header-border: #d8e1ea;
    --studio-modal-footer-bg: #f8fafc;
    --studio-modal-footer-border: #d8e1ea;
    --studio-muted-text: #475569;
    --studio-subtle-text: #64748b;
    --studio-box-bg: #f8fafc;
    --studio-box-border: #d8e1ea;
    --studio-card-bg: #ffffff;
    --studio-card-border: #d8e1ea;
    --studio-banner-bg: rgba(16, 185, 129, 0.1);
    --studio-banner-border: rgba(16, 185, 129, 0.3);
    --studio-banner-title: #065f46;
    --studio-banner-text: #0f172a;
    --studio-tier-pass: #00629e;
    --studio-tier-unlock: #15803d;
    --studio-tier-static: #b45309;
    --studio-tier-free: #7e22ce;
    --studio-warning-color: #ba1a1a;
    --studio-warning-bg: rgba(186, 26, 26, 0.08);

    /* Backwards-compatible aliases for legacy inline references */
    --outline-color: var(--studio-muted-text);
    --container-low: var(--studio-modal-footer-bg);
    --text-color: var(--studio-modal-text);
    --border-color: var(--studio-modal-border);
    --secondbg-color: var(--studio-box-bg);
}

@media (prefers-color-scheme: dark) {
    :root:not(.tf-light-mode) {
        --studio-modal-bg: #1c2026;
        --studio-modal-text: #e2e2e5;
        --studio-modal-border: #2e343e;
        --studio-modal-header-border: #2e343e;
        --studio-modal-footer-bg: #14171d;
        --studio-modal-footer-border: #2e343e;
        --studio-muted-text: #94a3b8;
        --studio-subtle-text: #94a3b8;
        --studio-box-bg: #242932;
        --studio-box-border: #313742;
        --studio-card-bg: #16191f;
        --studio-card-border: #313742;
        --studio-banner-bg: rgba(16, 185, 129, 0.16);
        --studio-banner-border: rgba(16, 185, 129, 0.35);
        --studio-banner-title: #34d399;
        --studio-banner-text: #e2e2e5;
        --studio-tier-pass: #9ecaff;
        --studio-tier-unlock: #4ade80;
        --studio-tier-static: #fbbf24;
        --studio-tier-free: #c084fc;
        --studio-warning-color: #ffb4ab;
        --studio-warning-bg: rgba(255, 180, 171, 0.12);

        --outline-color: var(--studio-muted-text);
        --container-low: var(--studio-modal-footer-bg);
        --text-color: var(--studio-modal-text);
        --border-color: var(--studio-modal-border);
        --secondbg-color: var(--studio-box-bg);
    }
}

html.tf-dark-mode,
[data-theme="dark"],
#turnifure-studio-wrap[data-theme="dark"],
html:not(.tf-light-mode) #turnifure-studio-wrap:not([data-theme="light"]) {
    --studio-modal-bg: #1c2026;
    --studio-modal-text: #e2e2e5;
    --studio-modal-border: #2e343e;
    --studio-modal-header-border: #2e343e;
    --studio-modal-footer-bg: #14171d;
    --studio-modal-footer-border: #2e343e;
    --studio-muted-text: #94a3b8;
    --studio-subtle-text: #94a3b8;
    --studio-box-bg: #242932;
    --studio-box-border: #313742;
    --studio-card-bg: #16191f;
    --studio-card-border: #313742;
    --studio-banner-bg: rgba(16, 185, 129, 0.16);
    --studio-banner-border: rgba(16, 185, 129, 0.35);
    --studio-banner-title: #34d399;
    --studio-banner-text: #e2e2e5;
    --studio-tier-pass: #9ecaff;
    --studio-tier-unlock: #4ade80;
    --studio-tier-static: #fbbf24;
    --studio-tier-free: #c084fc;
    --studio-warning-color: #ffb4ab;
    --studio-warning-bg: rgba(255, 180, 171, 0.12);

    --outline-color: var(--studio-muted-text);
    --container-low: var(--studio-modal-footer-bg);
    --text-color: var(--studio-modal-text);
    --border-color: var(--studio-modal-border);
    --secondbg-color: var(--studio-box-bg);
}

/* ==========================================================================
   2. Base & Studio Layout Overrides
   ========================================================================== */
html, body {
    margin: 0;
    padding: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    background: #f8fafc;
}
#turnifure-studio-wrap {
    margin: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    max-height: 100vh !important;
    box-sizing: border-box;
}
.sidebar-top-bar {
    display: flex !important;
    align-items: center !important;
    gap: 8px !important;
}
#studio-3d-toggles {
    display: none !important;
}

/* Top Bar Button Tweaks: Hide legacy duplicate inputs consolidated in menu */
#studio-project-name,
#studio-download-btn,
#studio-reset-btn,
#studio-tour-btn {
    display: none !important;
}

/* Strict Accordion */
#turnifure-studio-wrap #card-input-params.expanded,
#turnifure-studio-wrap #card-input-recipe.expanded {
    flex-grow: 1 !important;
    flex-basis: 0 !important;
    min-height: 180px !important;
    max-height: none !important;
}
#turnifure-studio-wrap #card-input-params:not(.expanded),
#turnifure-studio-wrap #card-input-recipe:not(.expanded) {
    flex-grow: 0 !important;
    flex-shrink: 0 !important;
    flex-basis: 46px !important;
    min-height: 46px !important;
    max-height: 46px !important;
}

/* ==========================================================================
   3. Studio Dropdown Menu
   ========================================================================== */
.studio-menu-wrap {
    position: relative;
    display: inline-flex;
    align-items: center;
}
#studio-menu-toggle-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border-radius: 8px;
    background: var(--input-bg, #ffffff);
    border: 1px solid var(--border-color, #d8e1ea);
    color: var(--text-color, #0f172a);
    cursor: pointer;
    transition: all 0.15s ease;
}
#studio-menu-toggle-btn:hover {
    background: var(--secondbg-color, #f1f5f9);
    color: var(--accent-color, #00629e);
}
.m3-dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    min-width: 270px;
    background: var(--input-bg, #ffffff);
    color: var(--text-color, #0f172a);
    border: 1px solid var(--border-color, #d8e1ea);
    border-radius: 14px;
    box-shadow: 0 16px 36px -6px rgba(0, 0, 0, 0.25), 0 0 0 1px var(--border-color, #d8e1ea);
    z-index: 99999;
    padding: 6px;
    box-sizing: border-box;
    font-family: inherit;
}
.m3-menu-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--text-color, #0f172a);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    text-align: left;
    box-sizing: border-box;
    transition: background 0.15s ease;
    font-family: inherit;
}
.m3-menu-item:hover {
    background: var(--secondbg-color, #eef2f6);
    color: var(--accent-color, #00629e);
}
.m3-menu-section-label {
    font-size: 10.5px;
    font-weight: 700;
    color: var(--text-color, #64748b);
    opacity: 0.65;
    padding: 10px 12px 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.m3-menu-divider {
    height: 1px;
    background: var(--border-color, #d8e1ea);
    margin: 6px 0;
}
.m3-menu-footer-version {
    font-size: 11px;
    color: var(--text-color, #64748b);
    opacity: 0.6;
    padding: 6px 12px 4px;
    font-family: 'Fira Code', monospace;
}

/* Theme Segmented Switcher */
.m3-theme-segmented-bar {
    display: flex;
    align-items: center;
    background: var(--secondbg-color, #f1f5f9);
    border: 1px solid var(--border-color, #d8e1ea);
    border-radius: 8px;
    padding: 2px;
    margin: 4px 8px 8px;
    gap: 2px;
}
.m3-theme-toggle-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 6px 4px;
    font-size: 11.5px;
    font-weight: 500;
    border: none;
    background: transparent;
    color: var(--text-color, #64748b);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
    font-family: inherit;
}
.m3-theme-toggle-btn:hover {
    color: var(--text-color, #0f172a);
}
.m3-theme-toggle-btn.active {
    background: var(--input-bg, #ffffff);
    color: var(--accent-color, #00629e);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
    font-weight: 600;
}

/* ==========================================================================
   4. AR Dock & Trigger Button
   ========================================================================== */
#turnifure-studio-wrap #studio-ar-dock {
    position: absolute;
    bottom: 24px;
    right: 24px;
    z-index: 60;
    display: none;
    align-items: center;
    gap: 8px;
}
#turnifure-studio-wrap .main-view.is-3d-active #studio-ar-dock {
    display: flex !important;
}
.m3-ar-trigger-btn {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 8px 18px 8px 14px;
    border-radius: 28px;
    background: var(--input-bg, #ffffff);
    border: 1px solid var(--border-color, #d8e1ea);
    box-shadow: var(--md-sys-elevation-floating, 0 8px 24px rgba(0,0,0,0.15));
    color: var(--text-color, #0f172a);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
    font-family: inherit;
}
.m3-ar-trigger-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 28px rgba(0,0,0,0.2);
    border-color: var(--accent-color, #00629e);
    color: var(--accent-color, #00629e);
}
.m3-ar-btn-label {
    display: flex;
    flex-direction: column;
    text-align: left;
    font-size: 11px;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: 0.6px;
}
.m3-ar-qr-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 14px 10px;
    border-radius: 16px;
    background: var(--input-bg, #ffffff);
    border: 1px solid var(--border-color, #d8e1ea);
    box-shadow: var(--md-sys-elevation-floating, 0 16px 36px rgba(0,0,0,0.25));
    color: var(--text-color, #0f172a);
    min-width: 156px;
    box-sizing: border-box;
    animation: m3PopIn 0.2s cubic-bezier(0.2, 0, 0, 1);
}
@keyframes m3PopIn {
    from { opacity: 0; transform: scale(0.92); }
    to { opacity: 1; transform: scale(1); }
}
.m3-ar-qr-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}
.m3-ar-qr-title {
    font-size: 11px;
    font-weight: 700;
    color: var(--accent-color, #00629e);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.m3-ar-qr-close {
    background: none;
    border: none;
    font-size: 18px;
    line-height: 1;
    color: var(--text-color, #64748b);
    cursor: pointer;
    padding: 0 4px;
}
.m3-ar-qr-canvas-wrap {
    padding: 6px;
    background: #ffffff;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.m3-ar-qr-hint {
    margin-top: 8px;
    font-size: 10.5px;
    font-weight: 600;
    color: var(--text-color, #64748b);
    text-decoration: none;
    transition: color 0.15s ease;
}
.m3-ar-qr-hint:hover {
    color: var(--accent-color, #00629e);
    text-decoration: underline;
}

/* ==========================================================================
   5. Material 3 Modals Architecture
   ========================================================================== */
.m3-modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 999999;
    background: rgba(15, 23, 42, 0.65);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    box-sizing: border-box;
    animation: m3FadeIn 0.15s ease-out;
}
@keyframes m3FadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.m3-modal-card {
    background: var(--studio-modal-bg);
    color: var(--studio-modal-text);
    border: 1px solid var(--studio-modal-border);
    border-radius: 28px;
    width: 440px;
    max-width: 95vw;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 24px 48px -12px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    font-family: inherit;
    animation: m3ScaleIn 0.2s cubic-bezier(0.2, 0, 0, 1);
    box-sizing: border-box;
}
@keyframes m3ScaleIn {
    from { transform: scale(0.94); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}
.m3-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    border-bottom: 1px solid var(--studio-modal-header-border);
}
.m3-modal-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}
.studio-modal-icon-wrap,
.m3-modal-icon-badge {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: rgba(0, 98, 158, 0.12);
    color: var(--accent-color, #00629e);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
html.tf-dark-mode .studio-modal-icon-wrap,
html.tf-dark-mode .m3-modal-icon-badge,
[data-theme="dark"] .studio-modal-icon-wrap,
[data-theme="dark"] .m3-modal-icon-badge {
    background: rgba(158, 202, 255, 0.16);
    color: #9ecaff;
}
.m3-modal-title {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.2px;
    color: var(--studio-modal-text);
}
.m3-modal-subtitle {
    font-size: 11.5px;
    color: var(--studio-subtle-text);
}
.m3-modal-close {
    background: transparent;
    border: none;
    font-size: 22px;
    line-height: 1;
    color: var(--studio-subtle-text);
    cursor: pointer;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
    opacity: 0.85;
}
.m3-modal-close:hover {
    opacity: 1;
    background: rgba(125, 125, 125, 0.15);
    color: var(--studio-modal-text);
}
.m3-modal-body {
    padding: 18px 24px;
    overflow-y: auto;
    font-size: 12.5px;
    line-height: 1.55;
    color: var(--studio-modal-text);
}
.m3-text-field-group {
    margin-bottom: 20px;
}
.m3-field-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--studio-muted-text);
    margin-bottom: 8px;
    display: block;
}
.m3-input-text {
    width: 100%;
    box-sizing: border-box;
    padding: 11px 14px;
    border: 1px solid var(--border-color, #cbd5e1);
    border-radius: 12px;
    font-size: 14px;
    font-family: inherit;
    background: var(--input-bg, #ffffff);
    color: var(--studio-modal-text);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.m3-input-text:focus {
    border-color: var(--accent-color, #00629e);
    box-shadow: 0 0 0 3px rgba(0, 98, 158, 0.2);
}
.m3-dialog-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 10px;
    margin-top: 20px;
}
.m3-dialog-actions.m3-modal-footer {
    border-top: 1px solid var(--studio-modal-footer-border);
    padding: 14px 24px;
    margin-top: 0;
    background: var(--studio-modal-footer-bg);
    border-radius: 0 0 28px 28px;
}
.m3-dialog-btn-cancel {
    background: transparent;
    border: none;
    color: var(--accent-color, #00629e);
    border-radius: 20px;
    padding: 8px 18px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
    font-family: inherit;
}
.m3-dialog-btn-cancel:hover {
    background: rgba(125, 125, 125, 0.12);
}
.m3-dialog-btn-confirm {
    background: var(--accent-color, #00629e);
    color: #ffffff;
    border: none;
    border-radius: 20px;
    padding: 8px 22px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
    transition: all 0.15s ease;
    font-family: inherit;
}
.m3-dialog-btn-confirm:hover {
    opacity: 0.92;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Dark mode specific button styles */
html.tf-dark-mode .m3-dialog-btn-confirm,
#turnifure-studio-wrap[data-theme="dark"] .m3-dialog-btn-confirm {
    background: #9ecaff;
    color: #003258;
}

/* Links inside modals */
.studio-modal-link {
    color: var(--accent-color, #00629e);
    text-decoration: underline;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.studio-modal-link:hover {
    opacity: 0.85;
}

/* ==========================================================================
   6. Studio Terms & Legal Modal Components
   ========================================================================== */
.studio-terms-top-banner {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    background: var(--studio-banner-bg, #eff6ff);
    color: var(--studio-banner-text, #1e3a8a);
    padding: 8px 16px;
    font-size: 12.5px;
    border-bottom: 1px solid var(--studio-banner-border, #bfdbfe);
    z-index: 90;
    box-sizing: border-box;
    width: 100%;
}
.studio-terms-top-banner-content {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}
.studio-terms-top-banner-btn {
    background: var(--accent-color, #00629e);
    color: #ffffff;
    border: none;
    padding: 4px 12px;
    border-radius: 9999px;
    font-size: 11.5px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: filter 0.15s;
}
.studio-terms-top-banner-btn:hover {
    filter: brightness(1.1);
}

.studio-terms-banner {
    background: var(--studio-banner-bg);
    border: 1px solid var(--studio-banner-border);
    border-radius: 12px;
    padding: 12px 16px;
    margin-bottom: 14px;
    display: flex;
    gap: 12px;
    align-items: flex-start;
}
.studio-terms-banner-title {
    font-weight: 700;
    color: var(--studio-banner-title);
    font-size: 13.5px;
    margin-bottom: 3px;
}
.studio-terms-banner-text {
    color: var(--studio-banner-text);
    font-size: 12px;
    line-height: 1.5;
}

.studio-terms-box {
    background: var(--studio-box-bg);
    border: 1px solid var(--studio-box-border);
    border-radius: 12px;
    padding: 14px 16px;
    margin-bottom: 14px;
}
.studio-terms-box-title {
    font-weight: 700;
    font-size: 13px;
    color: var(--studio-modal-text);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.studio-terms-box-desc {
    color: var(--studio-muted-text);
    font-size: 12px;
    line-height: 1.45;
    margin-bottom: 8px;
}
.studio-terms-box-list {
    margin: 0;
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    color: var(--studio-modal-text);
    font-size: 12px;
}
.studio-terms-box-list strong {
    color: var(--studio-modal-text);
}

.studio-terms-card-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 10px;
    margin-bottom: 8px;
}
@media (max-width: 600px) {
    .studio-terms-card-grid {
        grid-template-columns: 1fr;
    }
}
.studio-terms-sec2-card {
    background: var(--studio-card-bg);
    border: 1px solid var(--studio-card-border);
    border-radius: 8px;
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.studio-terms-card-title {
    font-weight: 700;
    font-size: 12px;
}
.studio-terms-card-title.tier-pass {
    color: var(--studio-tier-pass);
}
.studio-terms-card-title.tier-unlock {
    color: var(--studio-tier-unlock);
}
.studio-terms-card-title.tier-static {
    color: var(--studio-tier-static);
}
.studio-terms-card-title.tier-free {
    color: var(--studio-tier-free);
}
.studio-terms-card-desc {
    font-size: 11.5px;
    color: var(--studio-muted-text);
    line-height: 1.4;
}
.studio-terms-warning {
    font-size: 11.5px;
    color: var(--studio-warning-color);
    background: var(--studio-warning-bg);
    border: 1px solid var(--studio-warning-color);
    border-radius: 8px;
    padding: 8px 12px;
    font-weight: 600;
    margin-top: 8px;
    line-height: 1.4;
}
.studio-terms-agree-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--studio-modal-text);
    cursor: pointer;
    user-select: none;
}

/* Callout Box (Auth modal, Info badges) */
.studio-callout-box {
    background: var(--studio-box-bg);
    border: 1px solid var(--studio-box-border);
    border-radius: 10px;
    padding: 12px 14px;
    font-size: 11.5px;
    color: var(--studio-muted-text);
    line-height: 1.45;
}
.studio-callout-box-title {
    font-weight: 600;
    color: var(--studio-modal-text);
    margin-bottom: 4px;
}

/* ==========================================================================
   7. Cloud Recipes Modal
   ========================================================================== */
.studio-recipes-info-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    margin-bottom: 12px;
    background: rgba(0, 98, 158, 0.08);
    border-radius: 8px;
    font-size: 11.5px;
    color: var(--studio-muted-text);
}
html.tf-dark-mode .studio-recipes-info-bar,
[data-theme="dark"] .studio-recipes-info-bar {
    background: rgba(158, 202, 255, 0.1);
    color: var(--studio-modal-text);
}
.m3-recipe-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.m3-recipe-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    background: var(--studio-box-bg);
    border: 1px solid var(--studio-box-border);
    border-radius: 8px;
    transition: all 0.15s ease;
}
.m3-recipe-item:hover {
    border-color: var(--accent-color, #00629e);
    transform: translateY(-1px);
}
.m3-recipe-info {
    display: flex;
    flex-direction: column;
    gap: 3px;
    overflow: hidden;
}
.m3-recipe-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--studio-modal-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.m3-recipe-meta {
    font-size: 11px;
    color: var(--studio-muted-text);
}
.m3-recipe-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}
.m3-btn-sm {
    padding: 5px 10px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: all 0.15s ease;
    font-family: inherit;
}
.m3-btn-primary {
    background: var(--accent-color, #00629e);
    color: #ffffff;
}
.m3-btn-primary:hover {
    opacity: 0.9;
}
.m3-btn-danger {
    background: transparent;
    color: var(--error-color, #ba1a1a);
    border-color: rgba(186, 26, 26, 0.2);
}
.m3-btn-danger:hover {
    background: var(--studio-warning-bg);
}

/* ==========================================================================
   8. Syntax & Legend
   ========================================================================== */
.syntax-legend-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 10px;
    color: var(--studio-modal-text);
}
.syntax-legend-tag {
    font-family: 'Fira Code', monospace;
    font-size: 10.5px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 4px;
    white-space: nowrap;
    flex-shrink: 0;
}

/* ==========================================================================
   9. Studio Toast & Topbar Quick Buttons
   ========================================================================== */
.studio-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: #0f172a;
    color: #f8fafc;
    padding: 9px 18px;
    border-radius: 8px;
    font-size: 12.5px;
    font-weight: 600;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    opacity: 0;
    pointer-events: none;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 999999;
}
.studio-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}
.studio-topbar-quick-btn {
    background: var(--secondbg-color, #f1f5f9);
    border: 1px solid var(--border-color, #d8e1ea);
    color: var(--text-color, #0f172a);
    border-radius: 6px;
    height: 28px;
    padding: 0 10px;
    font-size: 11.5px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    transition: all 0.15s ease;
    font-family: inherit;
}
.studio-topbar-quick-btn:hover {
    border-color: var(--accent-color, #00629e);
    background: var(--input-bg, #ffffff);
    color: var(--accent-color, #00629e);
}

/* ==========================================================================
   10. Google Docs Version History & Topbar Enhancements
   ========================================================================== */
.studio-doc-title-input {
    background: transparent;
    border: 1px solid transparent;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-color, #0f172a);
    padding: 2px 8px;
    max-width: 220px;
    min-width: 120px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-family: inherit;
    transition: all 0.15s ease;
}
.studio-doc-title-input:hover {
    border-color: var(--border-color, #d8e1ea);
    background: var(--input-bg, #ffffff);
}
.studio-doc-title-input:focus {
    border-color: var(--accent-color, #00629e);
    background: var(--input-bg, #ffffff);
    outline: none;
}
.studio-cloud-pill {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 500;
    color: var(--studio-muted-text);
    padding: 3px 8px;
    border-radius: 12px;
    cursor: pointer;
    background: transparent;
    border: none;
    transition: all 0.15s ease;
}
.studio-cloud-pill:hover {
    background: var(--secondbg-color, #f1f5f9);
    color: var(--accent-color, #00629e);
}
.m3-vh-topbar {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 48px;
    background: var(--secondbg-color, #0f172a);
    color: var(--text-color, #f8fafc);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    z-index: 99998;
    box-sizing: border-box;
    border-bottom: 1px solid var(--border-color, #334155);
}
.m3-vh-topbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}
.m3-vh-back-btn {
    background: transparent;
    border: none;
    color: inherit;
    padding: 6px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s;
}
.m3-vh-back-btn:hover {
    background: rgba(255, 255, 255, 0.15);
}
.m3-vh-topbar-info {
    display: flex;
    flex-direction: column;
}
.m3-vh-topbar-sub {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.7;
}
.m3-vh-topbar-title {
    font-size: 13px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}
.m3-vh-badge {
    font-size: 10px;
    font-weight: 700;
    padding: 1px 6px;
    border-radius: 4px;
    background: rgba(87, 160, 255, 0.2);
    color: #57a0ff;
    text-transform: uppercase;
}
.m3-vh-panel {
    position: absolute;
    top: 48px;
    right: 0;
    bottom: 0;
    width: 310px;
    background: var(--input-bg, #ffffff);
    color: var(--text-color, #0f172a);
    border-left: 1px solid var(--border-color, #d8e1ea);
    display: flex;
    flex-direction: column;
    box-shadow: -4px 0 16px rgba(0, 0, 0, 0.1);
    z-index: 99997;
    box-sizing: border-box;
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}
.m3-vh-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-color, #d8e1ea);
}
.m3-vh-panel-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-color, #0f172a);
}
.m3-vh-panel-close {
    background: none;
    border: none;
    font-size: 20px;
    line-height: 1;
    color: var(--studio-muted-text);
    cursor: pointer;
    border-radius: 50%;
    padding: 2px 6px;
}
.m3-vh-panel-close:hover {
    background: var(--secondbg-color, #f1f5f9);
}
.m3-vh-panel-body {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.m3-vh-item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.15s ease;
    position: relative;
}
.m3-vh-item:hover {
    background: var(--secondbg-color, #f1f5f9);
}
.m3-vh-item.active {
    background: rgba(0, 98, 158, 0.08);
    border-color: var(--accent-color, #00629e);
}
.m3-vh-item-main {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
    overflow: hidden;
}
.m3-vh-item-time {
    font-size: 12.5px;
    font-weight: 600;
    color: var(--text-color, #0f172a);
}
.m3-vh-item-name {
    font-size: 11.5px;
    font-weight: 600;
    color: var(--accent-color, #00629e);
}
.m3-vh-item-size {
    font-size: 10.5px;
    color: var(--studio-muted-text);
}
.m3-vh-menu-wrap {
    position: relative;
}
.m3-vh-menu-trigger {
    background: transparent;
    border: none;
    color: var(--studio-muted-text);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.m3-vh-menu-trigger:hover {
    background: var(--secondbg-color, #e2e8f0);
    color: var(--text-color, #0f172a);
}
.m3-vh-dropdown-menu {
    position: absolute;
    right: 0;
    top: 24px;
    background: var(--input-bg, #ffffff);
    border: 1px solid var(--border-color, #d8e1ea);
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    padding: 4px 0;
    min-width: 160px;
    z-index: 99999;
}
.m3-vh-menu-action {
    display: block;
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: 8px 14px;
    font-size: 12px;
    color: var(--text-color, #0f172a);
    cursor: pointer;
    font-family: inherit;
    transition: background 0.12s;
}
.m3-vh-menu-action:hover {
    background: var(--secondbg-color, #f1f5f9);
    color: var(--accent-color, #00629e);
}

/* ==========================================================================
   20. In-Studio Mandatory Designer Access Modal
   ========================================================================== */
.studio-auth-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 14px 0;
    color: var(--studio-subtle-text);
}
.studio-auth-divider::before,
.studio-auth-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--studio-modal-border);
}
.studio-auth-divider span {
    padding: 0 10px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.5px;
}
.studio-input-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.studio-input-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--studio-muted-text);
}
.studio-auth-input {
    width: 100%;
    box-sizing: border-box;
    padding: 9px 12px;
    border: 1px solid var(--studio-modal-border);
    border-radius: 6px;
    background: var(--studio-box-bg);
    color: var(--studio-modal-text);
    font-family: inherit;
    font-size: 13px;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.studio-auth-input:focus {
    border-color: #00629e;
    box-shadow: 0 0 0 2px rgba(0, 98, 158, 0.18);
}
html.tf-dark-mode .studio-auth-input:focus,
[data-theme="dark"] .studio-auth-input:focus,
html:not(.tf-light-mode) #turnifure-studio-wrap:not([data-theme="light"]) .studio-auth-input:focus {
    border-color: #38bdf8;
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.22);
}

.studio-auth-submit-btn {
    width: 100%;
    padding: 11px 16px;
    background: #00629e;
    color: #ffffff;
    border: none;
    border-radius: 6px;
    font-size: 13.5px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, transform 0.05s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}
.studio-auth-submit-btn:hover {
    background: #004d7c;
}
.studio-auth-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Light / Dark Mode Button & Link Synchronization */
html.tf-dark-mode .studio-auth-submit-btn,
[data-theme="dark"] .studio-auth-submit-btn,
html:not(.tf-light-mode) #turnifure-studio-wrap:not([data-theme="light"]) .studio-auth-submit-btn {
    background: #38bdf8;
    color: #082f49;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.35);
}
html.tf-dark-mode .studio-auth-submit-btn:hover,
[data-theme="dark"] .studio-auth-submit-btn:hover,
html:not(.tf-light-mode) #turnifure-studio-wrap:not([data-theme="light"]) .studio-auth-submit-btn:hover {
    background: #7dd3fc;
    color: #082f49;
}

#studio-gsi-button-container {
    display: flex;
    justify-content: center;
    min-height: 44px;
    width: 100%;
    overflow: hidden;
    border-radius: 6px;
    background: transparent;
}

.studio-modal-link {
    color: #00629e;
    text-decoration: underline;
    text-underline-offset: 2px;
}
html.tf-dark-mode .studio-modal-link,
[data-theme="dark"] .studio-modal-link,
html:not(.tf-light-mode) #turnifure-studio-wrap:not([data-theme="light"]) .studio-modal-link {
    color: #38bdf8;
}