/* ============================================
           CSS VARIABLES - Will be dynamically set
           ============================================ */
        :root {
            /* Primary Scale P1-P9 */
            --p1: #1e1b4b; --p2: #312e81; --p3: #3730a3; --p4: #4f46e5;
            --p5: #6366f1; --p6: #818cf8; --p7: #a5b4fc; --p8: #c7d2fe; --p9: #e0e7ff;

            /* Secondary Scale S1-S9 */
            --s1: #2e1065; --s2: #4c1d95; --s3: #5b21b6; --s4: #7c3aed;
            --s5: #8b5cf6; --s6: #a78bfa; --s7: #c4b5fd; --s8: #ddd6fe; --s9: #ede9fe;

            /* Success Scale C1-C9 */
            --c1: #052e16; --c2: #14532d; --c3: #166534; --c4: #15803d;
            --c5: #22c55e; --c6: #4ade80; --c7: #86efac; --c8: #bbf7d0; --c9: #dcfce7;

            /* Info Scale I1-I9 */
            --i1: #083344; --i2: #164e63; --i3: #155e75; --i4: #0891b2;
            --i5: #06b6d4; --i6: #22d3ee; --i7: #67e8f9; --i8: #a5f3fc; --i9: #cffafe;

            /* Warning Scale W1-W9 */
            --w1: #451a03; --w2: #78350f; --w3: #92400e; --w4: #d97706;
            --w5: #f59e0b; --w6: #fbbf24; --w7: #fcd34d; --w8: #fde68a; --w9: #fef3c7;

            /* Error Scale E1-E9 */
            --e1: #450a0a; --e2: #7f1d1d; --e3: #991b1b; --e4: #dc2626;
            --e5: #ef4444; --e6: #f87171; --e7: #fca5a5; --e8: #fecaca; --e9: #fee2e2;

            /* Neutral Scale N1-N9 - Component Previews (keep original aesthetic) */
            --n1: #0f172a; /* Text Default */
            --n2: #334155; /* Text Light */
            --n3: #64748b; /* Text Dim */
            --n4: #94a3b8; /* Text Disabled */
            --n5: #cbd5e1; /* Border Dark */
            --n6: #e2e8f0; /* Border Normal */
            --n7: #f1f5f9; /* Border Light */
            --n8: #f8fafc; /* Background Secondary */
            --n9: #ffffff; /* Background Default */

            /* Dark Mode Scales (auto-generated by JS) */
            --pd1: #1e1b4b; --pd2: #312e81; --pd3: #3730a3; --pd4: #4f46e5;
            --pd5: #6366f1; --pd6: #818cf8; --pd7: #a5b4fc; --pd8: #c7d2fe; --pd9: #e0e7ff;
            --sd1: #2e1065; --sd2: #4c1d95; --sd3: #5b21b6; --sd4: #7c3aed;
            --sd5: #8b5cf6; --sd6: #a78bfa; --sd7: #c4b5fd; --sd8: #ddd6fe; --sd9: #ede9fe;
            --cd1: #052e16; --cd2: #14532d; --cd3: #166534; --cd4: #15803d;
            --cd5: #22c55e; --cd6: #4ade80; --cd7: #86efac; --cd8: #bbf7d0; --cd9: #dcfce7;
            --id1: #083344; --id2: #164e63; --id3: #155e75; --id4: #0891b2;
            --id5: #06b6d4; --id6: #22d3ee; --id7: #67e8f9; --id8: #a5f3fc; --id9: #cffafe;
            --wd1: #451a03; --wd2: #78350f; --wd3: #92400e; --wd4: #d97706;
            --wd5: #f59e0b; --wd6: #fbbf24; --wd7: #fcd34d; --wd8: #fde68a; --wd9: #fef3c7;
            --ed1: #450a0a; --ed2: #7f1d1d; --ed3: #991b1b; --ed4: #dc2626;
            --ed5: #ef4444; --ed6: #f87171; --ed7: #fca5a5; --ed8: #fecaca; --ed9: #fee2e2;

            /* Dark Neutral Scale ND1-ND9 (auto-generated by JS) */
            --nd1: #f0e8d5; --nd2: #ccbeaa; --nd3: #9b8b74;
            --nd4: #6b5c47; --nd5: #342a1e; --nd6: #1d1710;
            --nd7: #0e0a06; --nd8: #070503; --nd9: #000000;

            /* UI Chrome Colors - App interface only */
            --ui-bg: #ffffff;
            --ui-bg-secondary: #ffffff;
            --ui-border: #000000;
            --ui-text: #000000;
            --ui-text-secondary: #666666;

            /* Link color */
            --l1: #3B82F6; /* Link Default - will be overridden by Jinja */
            --link: var(--l1);

            /* Spacing */
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 12px;
            --spacing-lg: 16px;
            --spacing-xl: 24px;

            /* Corner Radius - UI Chrome (app interface) */
            --ui-radius: 0px;

            /* Corner Radius - Component Previews (keep original aesthetic) */
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 8px;
            --radius-xl: 12px;

            /* Card Shadows - Component Previews (keep original aesthetic) */
            --card-shadow-base: 0 1px 3px rgba(0,0,0,0.06);
            --card-shadow-hover: 0 4px 12px rgba(0,0,0,0.08);

            /* Typography */
            --font-family-ui: 'DM Mono', monospace;  /* Fixed UI font */
            --font-family: 'Inter', sans-serif;  /* Customizable component font */
            --font-size-xs: 11px;
            --font-size-sm: 13px;
            --font-size-md: 14px;
            --font-size-lg: 16px;

            /* Typography Scale (calculated from base 14px with 1.2 ratio, rounded to even) */
            --font-size-title: 34px;
            --font-size-h1: 28px;
            --font-size-h2: 22px;
            --font-size-h3: 18px;
            --font-size-body: 14px;
            --font-size-body-small: 12px;
            --font-size-tooltip: 10px;
        }

        /* ============================================
           RESET & BASE
           ============================================ */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: var(--font-family-ui);
            background: var(--ui-bg);
            color: var(--ui-text);
            height: 100vh;
            overflow: hidden;
            font-size: var(--font-size-md);
        }

        /* ============================================
           THREE-PANEL LAYOUT
           ============================================ */
        .editor-container {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            height: calc(100vh - 45px);
            overflow: hidden;
        }

        .panel {
            display: flex;
            flex-direction: column;
            background: var(--ui-bg);
            overflow: hidden;
        }

        .panel-colors {
            border-right: 1px solid var(--ui-border);
        }

        .panel-components {
            background: var(--ui-bg-secondary);
        }

        .panel-properties {
            border-left: 1px solid var(--ui-border);
        }

        .panel-header {
            padding: var(--spacing-lg);
            border-bottom: 1px solid var(--ui-border);
            background: var(--ui-bg);
            flex-shrink: 0;
            min-height: 72px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .panel-header h2 {
            font-size: var(--font-size-lg);
            font-weight: 600;
            color: var(--ui-text);
        }

        .panel-header .subtitle {
            font-size: var(--font-size-xs);
            color: var(--ui-text-secondary);
            margin-top: 2px;
        }

        .panel-content {
            flex: 1;
            overflow-y: auto;
            padding: var(--spacing-lg);
        }

        /* Components panel has no padding - sections span edge to edge */
        .panel-components .panel-content {
            padding: 0;
        }

        .panel-footer {
            padding: var(--spacing-lg);
            border-top: 1px solid var(--ui-border);
            background: var(--ui-bg);
            flex-shrink: 0;
        }

        /* ============================================
           PANEL 1: COLOR SCALES
           ============================================ */
        .color-scale-section {
            margin-bottom: var(--spacing-xl);
        }

        .color-scale-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: var(--spacing-md);
        }

        .color-scale-title {
            font-size: var(--font-size-sm);
            font-weight: 600;
            color: var(--ui-text);
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .color-scale-title .base-indicator {
            font-size: var(--font-size-sm);
            color: #000000;
            font-weight: 600;
        }

        /* ============================================
           ACCORDION SECTIONS (Left Panel)
           ============================================ */
        .accordion-section {
            border-bottom: 1px solid var(--ui-border);
            margin-left: calc(-1 * var(--spacing-lg));
            margin-right: calc(-1 * var(--spacing-lg));
        }

        .accordion-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            min-height: 45px;
            padding: 0 var(--spacing-lg);
            background: none;
            border: none;
            cursor: pointer;
            font-family: var(--font-family-ui);
            color: var(--ui-text);
        }

        .accordion-header:hover {
            color: var(--ui-text-secondary);
        }

        .accordion-title {
            font-size: var(--font-size-sm);
            font-weight: 600;
        }

        .accordion-arrow {
            font-size: var(--font-size-xs);
            color: #0070ff;
            font-weight: 500;
        }

        .accordion-body {
            overflow: visible;
            padding: 0 var(--spacing-lg) var(--spacing-md);
        }

        .reset-btn {
            padding: 4px 8px;
            font-size: var(--font-size-xs);
            background: var(--n7);
            border: 1px solid var(--n6);
            border-radius: var(--radius-sm);
            color: var(--n3);
            cursor: pointer;
            transition: all 0.15s;
        }

        .reset-btn:hover {
            background: var(--n6);
            color: var(--n2);
        }

        .neutral-preset-group {
            display: flex;
            gap: 4px;
        }

        .neutral-preset-btn {
            padding: 3px 10px;
            font-size: var(--font-size-xs);
            font-family: var(--font-family-ui);
            background: var(--n9);
            border: 1px solid var(--n6);
            border-radius: var(--radius-sm);
            color: var(--n3);
            cursor: pointer;
            transition: all 0.15s;
        }

        .neutral-preset-btn:hover {
            background: var(--n7);
            color: var(--n2);
        }

        .neutral-preset-btn.active {
            background: var(--n1);
            border-color: var(--n1);
            color: var(--n9);
        }

        .neutral-preset-btn[data-preset="custom"] {
            cursor: default;
            opacity: 0.5;
        }

        .neutral-preset-btn[data-preset="custom"].active {
            opacity: 1;
        }

        /* Base Color Input */
        .base-color-row {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-md);
            padding: var(--spacing-sm);
            background: var(--ui-bg);
            border-radius: var(--ui-radius);
            border: none;
        }

        .base-color-picker {
            width: 36px;
            height: 36px;
            border: none;
            border-radius: var(--ui-radius);
            padding: 0;
            background: none;
            cursor: pointer;
        }

        .base-color-picker::-webkit-color-swatch-wrapper {
            padding: 0;
        }

        .base-color-picker::-webkit-color-swatch {
            border-radius: var(--ui-radius);
            border: none;
        }

        .base-color-info {
            flex: 1;
        }

        .base-color-label {
            font-size: var(--font-size-xs);
            color: var(--ui-text-secondary);
            margin-bottom: 2px;
        }

        .base-color-hex {
            width: 80px;
            height: 24px;
            border: 1px solid var(--ui-border);
            border-radius: var(--ui-radius);
            padding: 0 var(--spacing-sm);
            font-family: 'SF Mono', Monaco, monospace;
            font-size: var(--font-size-xs);
            text-transform: uppercase;
        }

        .base-color-hex:focus {
            outline: none;
            border-color: var(--ui-text);
        }

        /* Color Swatch Grid */
        .swatch-grid {
            display: grid;
            grid-template-columns: repeat(9, 1fr);
            gap: 0px;
            background: transparent;
            border-radius: var(--ui-radius);
            padding: 0;
            overflow: hidden;
        }

        .swatch {
            aspect-ratio: 1;
            position: relative;
            cursor: pointer;
            transition: transform 0.1s;
        }

        .swatch:first-child {
            border-radius: var(--radius-sm) 0 0 var(--radius-sm);
        }

        .swatch:last-child {
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }

        .swatch:hover {
            transform: scale(1.15);
            z-index: 10;
            border-radius: var(--radius-sm);
            box-shadow: 0 2px 8px rgba(0,0,0,0.15);
        }

        .swatch.is-base {
            border: none;
            box-shadow: inset 0 0 0 2px rgba(0,0,0,0.3);
        }

        .swatch-label {
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            font-size: 8px;
            font-weight: 600;
            color: inherit;
            opacity: 0;
            transition: opacity 0.1s;
        }

        .swatch:hover .swatch-label {
            opacity: 1;
        }

        /* Neutral Scale - Different layout */
        .neutral-scale-grid {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .neutral-row {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding: var(--spacing-xs) var(--spacing-sm);
            background: var(--ui-bg);
            border-radius: var(--ui-radius);
            border: none;
        }

        .neutral-swatch {
            width: 24px;
            height: 24px;
            border-radius: var(--ui-radius);
            border: none;
            flex-shrink: 0;
        }

        .neutral-info {
            flex: 1;
            min-width: 0;
        }

        .neutral-label {
            font-size: var(--font-size-xs);
            font-weight: 500;
            color: var(--ui-text);
        }

        .neutral-usage {
            font-size: 10px;
            color: var(--ui-text-secondary);
        }

        .neutral-hex {
            width: 70px;
            height: 22px;
            border: 1px solid var(--ui-border);
            border-radius: var(--ui-radius);
            padding: 0 var(--spacing-xs);
            font-family: 'SF Mono', Monaco, monospace;
            font-size: 10px;
            text-transform: uppercase;
            text-align: center;
        }

        .neutral-hex:focus {
            outline: none;
            border-color: var(--ui-text);
        }

        /* ============================================
           PANEL 2: COMPONENTS
           ============================================ */
        .component-section {
            background: var(--ui-bg);
            border-radius: var(--ui-radius);
            border: none;
            border-bottom: 1px solid var(--ui-border);
            margin-bottom: 0;
            margin-left: calc(-1 * var(--spacing-lg));
            margin-right: calc(-1 * var(--spacing-lg));
            overflow: hidden;
        }

        .component-section-header {
            padding: var(--spacing-md) var(--spacing-lg);
            background: var(--ui-bg);
            border-bottom: 1px solid var(--ui-border);
            font-size: var(--font-size-sm);
            font-weight: 600;
            color: var(--ui-text);
        }

        .component-section-content {
            padding: var(--spacing-lg);
        }

        .component-group {
            margin-bottom: var(--spacing-lg);
        }

        .component-group:last-child {
            margin-bottom: 0;
        }

        .component-group-title {
            font-size: var(--font-size-xs);
            font-weight: 600;
            color: var(--ui-text-secondary);
            margin-bottom: var(--spacing-sm);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .component-card {
            border: 1px solid #DDDDDD;
            border-radius: var(--ui-radius);
            padding: var(--spacing-lg) var(--spacing-xl);
            cursor: pointer;
            transition: border-color 0.15s, background 0.2s;
            background: var(--n9);
            margin-bottom: 0;
        }

        .section-content.dark-preview {
            /* Neutral */
            --n1: var(--nd1); --n2: var(--nd2); --n3: var(--nd3);
            --n4: var(--nd4); --n5: var(--nd5); --n6: var(--nd6);
            --n7: var(--nd7); --n8: var(--nd8); --n9: var(--nd9);
            /* Primary */
            --p1: var(--pd1); --p2: var(--pd2); --p3: var(--pd3);
            --p4: var(--pd4); --p5: var(--pd5); --p6: var(--pd6);
            --p7: var(--pd7); --p8: var(--pd8); --p9: var(--pd9);
            /* Secondary */
            --s1: var(--sd1); --s2: var(--sd2); --s3: var(--sd3);
            --s4: var(--sd4); --s5: var(--sd5); --s6: var(--sd6);
            --s7: var(--sd7); --s8: var(--sd8); --s9: var(--sd9);
            /* Success */
            --c1: var(--cd1); --c2: var(--cd2); --c3: var(--cd3);
            --c4: var(--cd4); --c5: var(--cd5); --c6: var(--cd6);
            --c7: var(--cd7); --c8: var(--cd8); --c9: var(--cd9);
            /* Info */
            --i1: var(--id1); --i2: var(--id2); --i3: var(--id3);
            --i4: var(--id4); --i5: var(--id5); --i6: var(--id6);
            --i7: var(--id7); --i8: var(--id8); --i9: var(--id9);
            /* Warning */
            --w1: var(--wd1); --w2: var(--wd2); --w3: var(--wd3);
            --w4: var(--wd4); --w5: var(--wd5); --w6: var(--wd6);
            --w7: var(--wd7); --w8: var(--wd8); --w9: var(--wd9);
            /* Error */
            --e1: var(--ed1); --e2: var(--ed2); --e3: var(--ed3);
            --e4: var(--ed4); --e5: var(--ed5); --e6: var(--ed6);
            --e7: var(--ed7); --e8: var(--ed8); --e9: var(--ed9);
        }

        .section-content.dark-preview .component-card {
            background: var(--nd9);
            border-color: var(--nd6);
        }

        /* Dark/Light mode toggle */
        .mode-toggle {
            display: flex;
            align-items: center;
            border: 1px solid var(--ui-border);
            border-radius: 20px;
            padding: 2px;
            gap: 0;
            background: var(--ui-bg);
        }

        .mode-toggle-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border: none;
            border-radius: 50%;
            background: none;
            cursor: pointer;
            color: var(--ui-text-secondary);
            padding: 0;
            transition: all 0.15s;
        }

        .mode-toggle-btn.active {
            background: #000;
            color: #fff;
        }

        .mode-toggle-btn svg {
            width: 14px;
            height: 14px;
        }

        .component-card:last-child {
            margin-bottom: 0;
        }

        .component-card:hover {
            border-color: var(--ui-text-secondary);
        }

        .component-card.is-selected {
            border-color: var(--ui-text);
            border-width: 2px;
        }

        .state-row {
            display: flex;
            align-items: center;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-sm);
            overflow: visible;
        }

        .state-row:last-child {
            margin-bottom: 0;
        }

        .state-label {
            width: 56px;
            font-size: var(--font-size-xs);
            color: var(--ui-text-secondary);
            flex-shrink: 0;
        }

        .state-items {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }

        /* ============================================
           BUTTON STYLES
           ============================================ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: var(--spacing-sm);
            height: 32px;
            padding: 0 var(--spacing-md);
            border-radius: var(--radius-md);
            font-family: var(--font-family);  /* Uses customizable font */
            font-size: var(--font-size-body);
            font-weight: 500;
            cursor: pointer;
            transition: all 0.15s;
            border: 1px solid transparent;
            text-decoration: none;
        }

        .btn-lg { height: 40px; padding: 0 var(--spacing-lg); font-size: var(--font-size-body); }
        .btn-sm { height: 26px; padding: 0 var(--spacing-sm); font-size: var(--font-size-xs); }

        /* Primary Button CSS Variables */
        :root {
            --btn-primary-bg-base: var(--p5);
            --btn-primary-text-base: #ffffff;
            --btn-primary-border-base: transparent;
            --btn-primary-bg-hover: var(--p4);
            --btn-primary-text-hover: #ffffff;
            --btn-primary-border-hover: var(--p5);
            --btn-primary-bg-disabled: var(--n6);
            --btn-primary-text-disabled: var(--n4);
            --btn-primary-border-disabled: var(--n6);

            --btn-secondary-bg-base: var(--n9);
            --btn-secondary-text-base: var(--n2);
            --btn-secondary-border-base: var(--n6);
            --btn-secondary-bg-hover: var(--n8);
            --btn-secondary-text-hover: var(--n2);
            --btn-secondary-border-hover: var(--n5);
            --btn-secondary-bg-disabled: var(--n8);
            --btn-secondary-text-disabled: var(--n4);
            --btn-secondary-border-disabled: var(--n6);

            --btn-hollow-bg-base: transparent;
            --btn-hollow-text-base: var(--p5);
            --btn-hollow-border-base: var(--p5);
            --btn-hollow-bg-hover: var(--p9);
            --btn-hollow-text-hover: var(--p5);
            --btn-hollow-border-hover: var(--p5);
            --btn-hollow-bg-disabled: transparent;
            --btn-hollow-text-disabled: var(--n4);
            --btn-hollow-border-disabled: var(--n6);

            --btn-link-text-base: var(--l1);
            --btn-link-text-hover: var(--p4);
            --btn-link-text-disabled: var(--n4);

            --btn-success-bg: var(--c8);
            --btn-success-text: var(--c2);
            --btn-warning-bg: var(--w8);
            --btn-warning-text: var(--w2);
            --btn-error-bg: var(--e8);
            --btn-error-text: var(--e2);
            --btn-info-bg: var(--i8);
            --btn-info-text: var(--i2);
            --btn-neutral-bg: var(--n8);
            --btn-neutral-text: var(--n2);
        }

        /* Primary Button */
        .btn-primary {
            background: var(--btn-primary-bg-base);
            color: var(--btn-primary-text-base);
            border-color: var(--btn-primary-border-base);
        }
        .btn-primary:hover, .btn-primary.is-hover {
            background: var(--btn-primary-bg-hover);
            color: var(--btn-primary-text-hover);
            border-color: var(--btn-primary-border-hover);
        }
        .btn-primary:disabled, .btn-primary.is-disabled {
            background: var(--btn-primary-bg-disabled);
            color: var(--btn-primary-text-disabled);
            border-color: var(--btn-primary-border-disabled);
            cursor: not-allowed;
        }

        /* Secondary Button */
        .btn-secondary {
            background: var(--btn-secondary-bg-base);
            color: var(--btn-secondary-text-base);
            border-color: var(--btn-secondary-border-base);
        }
        .btn-secondary:hover, .btn-secondary.is-hover {
            background: var(--btn-secondary-bg-hover);
            color: var(--btn-secondary-text-hover);
            border-color: var(--btn-secondary-border-hover);
        }
        .btn-secondary:disabled, .btn-secondary.is-disabled {
            background: var(--btn-secondary-bg-disabled);
            color: var(--btn-secondary-text-disabled);
            border-color: var(--btn-secondary-border-disabled);
            cursor: not-allowed;
        }

        /* Hollow/Outline Button */
        .btn-hollow {
            background: var(--btn-hollow-bg-base);
            color: var(--btn-hollow-text-base);
            border-color: var(--btn-hollow-border-base);
        }
        .btn-hollow:hover, .btn-hollow.is-hover {
            background: var(--btn-hollow-bg-hover);
            color: var(--btn-hollow-text-hover);
            border-color: var(--btn-hollow-border-hover);
        }
        .btn-hollow:disabled, .btn-hollow.is-disabled {
            background: var(--btn-hollow-bg-disabled);
            color: var(--btn-hollow-text-disabled);
            border-color: var(--btn-hollow-border-disabled);
            cursor: not-allowed;
        }

        /* Link Button */
        .btn-link {
            background: transparent;
            color: var(--btn-link-text-base);
            border: none;
            text-decoration: underline;
            padding: 0;
            height: auto;
        }
        .btn-link:hover, .btn-link.is-hover { color: var(--btn-link-text-hover); }
        .btn-link:disabled, .btn-link.is-disabled { color: var(--btn-link-text-disabled); cursor: not-allowed; text-decoration: none; }

        /* Success Button */
        .btn-success {
            background: var(--btn-success-bg);
            color: var(--btn-success-text);
        }
        .btn-success:hover, .btn-success.is-hover { filter: brightness(0.9); }

        /* Warning Button */
        .btn-warning {
            background: var(--btn-warning-bg);
            color: var(--btn-warning-text);
        }
        .btn-warning:hover, .btn-warning.is-hover { filter: brightness(0.9); }

        /* Error Button */
        .btn-error {
            background: var(--btn-error-bg);
            color: var(--btn-error-text);
        }
        .btn-error:hover, .btn-error.is-hover { filter: brightness(0.9); }

        /* Info Button */
        .btn-info {
            background: var(--btn-info-bg);
            color: var(--btn-info-text);
        }
        .btn-info:hover, .btn-info.is-hover { filter: brightness(0.9); }

        /* Neutral Button */
        .btn-neutral {
            background: var(--btn-neutral-bg);
            color: var(--btn-neutral-text);
        }
        .btn-neutral:hover, .btn-neutral.is-hover { filter: brightness(0.9); }

        /* ============================================
           ALERT COMPONENT
           ============================================ */
        :root {
            --alert-success-bg: var(--c8);
            --alert-success-text: var(--c2);
            --alert-success-border: var(--c6);
            --alert-warning-bg: var(--w8);
            --alert-warning-text: var(--w2);
            --alert-warning-border: var(--w6);
            --alert-error-bg: var(--e8);
            --alert-error-text: var(--e2);
            --alert-error-border: var(--e6);
            --alert-info-bg: var(--i8);
            --alert-info-text: var(--i2);
            --alert-info-border: var(--i6);
            --alert-neutral-bg: var(--n8);
            --alert-neutral-text: var(--n2);
            --alert-neutral-border: var(--n6);
        }

        .alert {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 16px;
            border: 1px solid;
            border-radius: var(--radius-md);
            font-family: var(--font-family);
            margin-bottom: 8px;
        }
        .alert:last-child { margin-bottom: 0; }

        .alert-icon { width: 20px; height: 20px; flex-shrink: 0; color: inherit; }
        .alert-icon svg { width: 20px; height: 20px; }
        .alert-content { flex: 1; }
        .alert-header { font-size: var(--font-size-body); font-weight: 500; }
        .alert-message { font-size: var(--font-size-body-small); opacity: 0.8; margin-top: 2px; }
        .alert-close { border: none; background: none; cursor: pointer; padding: 2px; color: inherit; opacity: 0.6; }
        .alert-close:hover { opacity: 1; }
        .alert-close svg { width: 16px; height: 16px; }

        .alert-success {
            background: var(--alert-success-bg);
            color: var(--alert-success-text);
            border-color: var(--alert-success-border);
        }
        .alert-warning {
            background: var(--alert-warning-bg);
            color: var(--alert-warning-text);
            border-color: var(--alert-warning-border);
        }
        .alert-error {
            background: var(--alert-error-bg);
            color: var(--alert-error-text);
            border-color: var(--alert-error-border);
        }
        .alert-info {
            background: var(--alert-info-bg);
            color: var(--alert-info-text);
            border-color: var(--alert-info-border);
        }
        .alert-neutral {
            background: var(--alert-neutral-bg);
            color: var(--alert-neutral-text);
            border-color: var(--alert-neutral-border);
        }

        /* ============================================
           ICON BUTTON STYLES
           ============================================ */
        .icon-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: all 0.15s;
            border: 1px solid transparent;
        }

        .icon-btn-lg { width: 40px; height: 40px; }
        .icon-btn-sm { width: 26px; height: 26px; }

        .icon-btn svg { width: 18px; height: 18px; }
        .icon-btn-lg svg { width: 20px; height: 20px; }
        .icon-btn-sm svg { width: 14px; height: 14px; }

        /* Icon Button CSS Variables */
        :root {
            --icon-btn-primary-bg-base: var(--p5);
            --icon-btn-primary-icon-base: #ffffff;
            --icon-btn-primary-border-base: transparent;
            --icon-btn-primary-bg-hover: var(--p4);
            --icon-btn-primary-icon-hover: #ffffff;
            --icon-btn-primary-bg-disabled: var(--n6);
            --icon-btn-primary-icon-disabled: var(--n4);

            --icon-btn-secondary-bg-base: var(--n8);
            --icon-btn-secondary-icon-base: var(--n2);
            --icon-btn-secondary-border-base: var(--n6);
            --icon-btn-secondary-bg-hover: var(--n7);
            --icon-btn-secondary-icon-hover: var(--n2);
            --icon-btn-secondary-bg-disabled: var(--n8);
            --icon-btn-secondary-icon-disabled: var(--n4);

            --icon-btn-hollow-bg-base: transparent;
            --icon-btn-hollow-icon-base: var(--n3);
            --icon-btn-hollow-border-base: var(--n6);
            --icon-btn-hollow-bg-hover: var(--n8);
            --icon-btn-hollow-icon-hover: var(--n2);
            --icon-btn-hollow-bg-disabled: transparent;
            --icon-btn-hollow-icon-disabled: var(--n5);
        }

        .icon-btn-primary {
            background: var(--icon-btn-primary-bg-base);
            color: var(--icon-btn-primary-icon-base);
            border-color: var(--icon-btn-primary-border-base);
        }
        .icon-btn-primary:hover, .icon-btn-primary.is-hover {
            background: var(--icon-btn-primary-bg-hover);
            color: var(--icon-btn-primary-icon-hover);
        }
        .icon-btn-primary:disabled, .icon-btn-primary.is-disabled {
            background: var(--icon-btn-primary-bg-disabled);
            color: var(--icon-btn-primary-icon-disabled);
            cursor: not-allowed;
        }

        .icon-btn-secondary {
            background: var(--icon-btn-secondary-bg-base);
            color: var(--icon-btn-secondary-icon-base);
            border-color: var(--icon-btn-secondary-border-base);
        }
        .icon-btn-secondary:hover, .icon-btn-secondary.is-hover {
            background: var(--icon-btn-secondary-bg-hover);
            color: var(--icon-btn-secondary-icon-hover);
        }
        .icon-btn-secondary:disabled, .icon-btn-secondary.is-disabled {
            background: var(--icon-btn-secondary-bg-disabled);
            color: var(--icon-btn-secondary-icon-disabled);
            cursor: not-allowed;
        }

        .icon-btn-hollow {
            background: var(--icon-btn-hollow-bg-base);
            color: var(--icon-btn-hollow-icon-base);
            border-color: var(--icon-btn-hollow-border-base);
        }
        .icon-btn-hollow:hover, .icon-btn-hollow.is-hover {
            background: var(--icon-btn-hollow-bg-hover);
            color: var(--icon-btn-hollow-icon-hover);
        }
        .icon-btn-hollow:disabled, .icon-btn-hollow.is-disabled {
            background: var(--icon-btn-hollow-bg-disabled);
            color: var(--icon-btn-hollow-icon-disabled);
            cursor: not-allowed;
        }

        /* ============================================
           ICON VARIANT SELECTOR
           ============================================ */
        #icon-variant-selector {
            display: flex;
            flex-wrap: wrap;
            gap: 4px;
        }
        .icon-variant-btn {
            padding: 3px 8px;
            font-family: var(--font-family-ui);
            font-size: 10px;
            font-weight: 500;
            border: 1px solid var(--ui-border);
            background: transparent;
            color: var(--ui-text-secondary);
            cursor: pointer;
            border-radius: 0;
            transition: all 0.1s;
        }
        .icon-variant-btn:hover { background: var(--ui-border); color: var(--ui-text); }
        .icon-variant-btn.is-active { background: var(--ui-text); color: var(--ui-bg); border-color: var(--ui-text); }

        /* ============================================
           FORM CONTROLS
           ============================================ */
        /* CSS Variables for form controls */
        :root {
            /* Default state */
            --input-border-color-default: var(--n6);
            --input-bg-default: var(--n9);
            --input-text-default: var(--n1);
            --input-label-default: var(--n2);

            /* Active state */
            --input-border-color-active: var(--p5);
            --input-bg-active: var(--n9);
            --input-text-active: var(--n1);
            --input-label-active: var(--n2);

            /* Error state */
            --input-border-color-error: var(--e5);
            --input-bg-error: var(--n9);
            --input-text-error: var(--n1);
            --input-label-error: var(--e5);

            /* Disabled state */
            --input-border-color-disabled: var(--n6);
            --input-bg-disabled: var(--n8);
            --input-text-disabled: var(--n4);
            --input-label-disabled: var(--n4);

            --input-radius: var(--radius-md);
            --input-border-width: 1px;

            --checkbox-color: var(--p5);
            --radio-color: var(--p5);
            --toggle-color: var(--p5);
            --toggle-bg: var(--n6);
            --toggle-handle: #ffffff;
        }

        .form-input {
            height: 32px;
            width: 160px;
            border: var(--input-border-width) solid var(--input-border-color-default);
            border-radius: var(--input-radius);
            padding: 0 var(--spacing-md);
            font-family: var(--font-family);  /* Uses customizable font */
            font-size: var(--font-size-body);
            background: var(--input-bg-default);
            color: var(--input-text-default);
            transition: border-color 0.15s, box-shadow 0.15s;
        }
        .form-input-sm { height: 26px; font-size: var(--font-size-body-small); width: 120px; }
        .form-input::placeholder { color: var(--n4); }
        .form-input:focus, .form-input.is-active { outline: none; border-color: var(--input-border-color-active); background: var(--input-bg-active); color: var(--input-text-active); box-shadow: none; }
        .form-input.is-error { border-color: var(--input-border-color-error); background: var(--input-bg-error); color: var(--input-text-error); }
        .form-input.is-error:focus { box-shadow: none; }
        .form-input:disabled, .form-input.is-disabled { background: var(--input-bg-disabled); color: var(--input-text-disabled); cursor: not-allowed; border-color: var(--input-border-color-disabled); }

        .form-select {
            height: 32px;
            width: 160px;
            border: var(--input-border-width) solid var(--input-border-color-default);
            border-radius: var(--input-radius);
            padding: 0 var(--spacing-md);
            font-family: var(--font-family);  /* Uses customizable font */
            font-size: var(--font-size-body);
            background: var(--input-bg-default);
            color: var(--input-text-default);
            cursor: pointer;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 10px center;
            transition: border-color 0.15s, box-shadow 0.15s;
        }
        .form-select-sm { height: 26px; font-size: var(--font-size-body-small); width: 120px; }
        .form-select:focus, .form-select.is-active { outline: none; border-color: var(--input-border-color-active); background-color: var(--input-bg-active); color: var(--input-text-active); box-shadow: none; }
        .form-select.is-error { border-color: var(--input-border-color-error); background-color: var(--input-bg-error); color: var(--input-text-error); }
        .form-select:disabled, .form-select.is-disabled { background-color: var(--input-bg-disabled); color: var(--input-text-disabled); cursor: not-allowed; border-color: var(--input-border-color-disabled); }

        /* Input/Select with label wrapper */
        .input-field {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }
        .input-field-label {
            font-family: var(--font-family);
            font-size: var(--font-size-body-small);
            font-weight: 500;
            color: var(--input-label-default);
        }
        .input-field.is-active .input-field-label { color: var(--input-label-active); }
        .input-field.is-error .input-field-label { color: var(--input-label-error); }
        .input-field.is-disabled .input-field-label { color: var(--input-label-disabled); }

        .form-checkbox, .form-radio {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-sm);
            cursor: pointer;
            font-family: var(--font-family);
            font-size: var(--font-size-sm);
            color: var(--n1);
        }
        .form-checkbox input[type="checkbox"] {
            -webkit-appearance: none;
            appearance: none;
            width: 16px;
            height: 16px;
            border: 2px solid var(--n5);
            background: var(--n9);
            cursor: pointer;
            position: relative;
            flex-shrink: 0;
            border-radius: 0px;
        }
        .form-checkbox input[type="checkbox"]:checked {
            background: var(--checkbox-color);
            border-color: var(--checkbox-color);
        }
        .form-checkbox input[type="checkbox"]:checked::after {
            content: '';
            position: absolute;
            left: 4px;
            top: 1px;
            width: 4px;
            height: 8px;
            border: solid #fff;
            border-width: 0 2px 2px 0;
            transform: rotate(45deg);
        }
        .form-radio input {
            width: 16px;
            height: 16px;
            accent-color: var(--radio-color);
            cursor: pointer;
        }
        .form-checkbox.is-disabled, .form-radio.is-disabled { opacity: 0.5; cursor: not-allowed; color: var(--n4); }
        .form-checkbox.is-disabled input, .form-radio.is-disabled input { cursor: not-allowed; }

        .form-toggle {
            position: relative;
            width: 40px;
            height: 22px;
            display: inline-block;
        }
        .form-toggle input { opacity: 0; width: 0; height: 0; }
        .form-toggle-slider {
            position: absolute;
            cursor: pointer;
            top: 0; left: 0; right: 0; bottom: 0;
            background-color: var(--toggle-bg);
            transition: 0.2s;
            border-radius: 11px;
        }
        .form-toggle-slider:before {
            position: absolute;
            content: "";
            height: 16px;
            width: 16px;
            left: 3px;
            bottom: 3px;
            background-color: var(--toggle-handle);
            transition: 0.2s;
            border-radius: 50%;
        }
        .form-toggle input:checked + .form-toggle-slider { background-color: var(--toggle-color); }
        .form-toggle input:checked + .form-toggle-slider:before { transform: translateX(18px); }
        .form-toggle.is-disabled { opacity: 0.5; }
        .form-toggle.is-disabled .form-toggle-slider { cursor: not-allowed; }

        /* ============================================
           CARD COMPONENT
           ============================================ */
        .preview-card {
            width: 280px;
            max-width: 100%;
            background: var(--n9);
            border: 1px solid var(--n6);
            border-radius: var(--radius-xl);
            overflow: hidden;
            font-family: var(--font-family);
            box-shadow: var(--card-shadow-base);
        }
        .preview-card.is-hover { border-color: var(--p5); box-shadow: var(--card-shadow-hover); }
        .preview-card.is-disabled { opacity: 0.6; }
        .preview-card__image {
            height: 140px;
            background: var(--n7);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--n4);
        }
        .preview-card__content { padding: var(--spacing-md); }
        .preview-card__title { font-size: var(--font-size-body); font-weight: 500; color: var(--n1); margin-bottom: var(--spacing-xs); }
        .preview-card__description { font-size: var(--font-size-body-small); color: var(--n3); line-height: 1.4; margin-bottom: var(--spacing-md); }
        .preview-card__actions { display: flex; gap: var(--spacing-sm); align-items: center; }

        /* Data Table */
        .preview-table {
            width: 100%;
            border: 1px solid var(--n6);
            border-radius: var(--radius-xl);
            overflow: hidden;
            font-family: var(--font-family);
            background: var(--n9);
            display: flex;
            flex-direction: column;
        }
        .preview-table__header-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-md) var(--spacing-lg);
            gap: var(--spacing-md);
        }
        .preview-table__header-right {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
        }
        /* Hide header pagination by default (shown when pagination=top) */
        .preview-table__header-row .preview-table__pagination {
            display: none;
        }
        .preview-table.pagination-top .preview-table__header-row .preview-table__pagination {
            display: flex;
        }
        .preview-table.pagination-top .preview-table__footer {
            display: none;
        }
        .preview-table__title {
            font-size: var(--font-size-h2);
            font-weight: 600;
            color: var(--n1);
            white-space: nowrap;
        }
        .preview-table__actions {
            display: flex;
            gap: var(--spacing-sm);
        }
        .preview-table__table {
            width: 100%;
            border-collapse: collapse;
        }
        .preview-table__thead {
            background: var(--n7);
        }
        .preview-table__thead .preview-table__cell {
            font-size: var(--font-size-body-small);
            font-weight: 500;
            color: var(--n3);
            text-align: left;
        }
        .preview-table__row {
            border-bottom: 1px solid var(--n6);
        }
        .preview-table__row:last-child {
            border-bottom: none;
        }
        .preview-table__cell {
            padding: var(--spacing-sm) var(--spacing-lg);
            font-size: var(--font-size-body-small);
            color: var(--n1);
        }
        .preview-table__footer {
            border-top: 1px solid var(--n6);
        }
        .preview-table__pagination {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-sm) var(--spacing-lg);
        }
        .preview-table__pagination-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }
        .preview-table__page-link {
            font-size: var(--font-size-body-small);
            color: var(--n3);
            text-decoration: none;
            cursor: pointer;
        }
        .preview-table__page-link:hover {
            color: var(--p4);
        }
        .preview-table__page-numbers {
            display: flex;
            gap: var(--spacing-xs);
            font-size: var(--font-size-body-small);
            color: var(--n3);
        }
        .preview-table__page-numbers .page-active {
            font-weight: 600;
            color: var(--p4);
        }
        .preview-table__pagination-info {
            font-size: var(--font-size-body-small);
            color: var(--n3);
        }
        .table-status-badge {
            display: inline-block;
            padding: 2px 8px;
            border-radius: var(--radius-md);
            font-size: 11px;
            font-weight: 500;
            line-height: 1.4;
        }
        .table-status-badge.badge-success { background: var(--btn-success-bg); color: var(--btn-success-text); }
        .table-status-badge.badge-warning { background: var(--btn-warning-bg); color: var(--btn-warning-text); }
        .table-status-badge.badge-error { background: var(--btn-error-bg); color: var(--btn-error-text); }
        .table-status-badge.badge-info { background: var(--btn-info-bg); color: var(--btn-info-text); }
        .table-status-badge.badge-neutral { background: var(--btn-neutral-bg); color: var(--btn-neutral-text); }

        /* Label Position radios */
        .label-position-radios {
            display: flex;
            gap: var(--spacing-md);
        }
        .label-pos-option {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            cursor: pointer;
            font-family: var(--font-family-ui);
            font-size: var(--font-size-xs);
            color: var(--ui-text);
        }
        .label-pos-option input[type="radio"]:disabled + span {
            color: var(--ui-text-secondary);
            opacity: 0.5;
        }
        .label-pos-option input[type="radio"]:disabled {
            cursor: not-allowed;
        }

        /* Input field label-side variant */
        .input-field.label-side {
            flex-direction: row;
            align-items: center;
            gap: var(--spacing-sm);
        }

        /* ============================================
           PANEL 3: PROPERTIES
           ============================================ */
        .properties-empty {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 200px;
            text-align: center;
            color: var(--ui-text-secondary);
        }
        .properties-empty svg { width: 48px; height: 48px; margin-bottom: var(--spacing-md); opacity: 0.4; }

        .state-tabs {
            display: flex;
            gap: var(--spacing-xs);
            margin-bottom: var(--spacing-lg);
            background: var(--ui-bg);
            padding: 3px;
            border-radius: var(--ui-radius);
            border: 1px solid var(--ui-border);
        }
        .state-tab {
            flex: 1;
            padding: var(--spacing-sm);
            border: none;
            border-radius: var(--ui-radius);
            background: transparent;
            font-family: var(--font-family-ui);
            font-size: var(--font-size-xs);
            font-weight: 500;
            color: var(--ui-text-secondary);
            cursor: pointer;
            transition: all 0.15s;
        }
        .state-tab:hover { color: var(--ui-text); }
        .state-tab.active { background: var(--ui-text); color: var(--ui-bg); }

        .property-group { margin-bottom: var(--spacing-xl); }
        .property-group:last-child { margin-bottom: 0; }
        .property-group-title {
            font-size: var(--font-size-xs);
            font-weight: 600;
            color: var(--ui-text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: var(--spacing-md);
        }

        .property-row {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-sm);
        }
        .property-row:last-child { margin-bottom: 0; }
        .property-label {
            width: 70px;
            font-size: var(--font-size-xs);
            color: var(--ui-text-secondary);
            flex-shrink: 0;
        }
        .property-input { flex: 1; display: flex; gap: var(--spacing-xs); align-items: center; }

        .property-color-picker {
            width: 28px;
            height: 28px;
            border: 1px solid var(--ui-border);
            border-radius: var(--ui-radius);
            padding: 0;
            background: none;
            cursor: pointer;
        }
        .property-color-hex {
            flex: 1;
            height: 28px;
            border: 1px solid var(--ui-border);
            border-radius: var(--ui-radius);
            padding: 0 var(--spacing-sm);
            font-family: 'SF Mono', Monaco, monospace;
            font-size: var(--font-size-xs);
            text-transform: uppercase;
        }
        .property-color-hex:focus { outline: none; border-color: var(--ui-text); }

        .property-number {
            width: 50px;
            height: 28px;
            border: 1px solid var(--ui-border);
            border-radius: var(--ui-radius);
            padding: 0 var(--spacing-xs);
            font-family: var(--font-family-ui);
            font-size: var(--font-size-xs);
            text-align: center;
        }
        .property-number:focus { outline: none; border-color: var(--ui-text); }

        .radius-presets {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-xs);
        }
        .radius-preset {
            padding: var(--spacing-sm);
            border: 1px solid var(--ui-border);
            border-radius: var(--ui-radius);
            background: var(--ui-bg);
            font-family: var(--font-family-ui);
            font-size: var(--font-size-xs);
            color: var(--ui-text-secondary);
            cursor: pointer;
            transition: all 0.15s;
        }
        .radius-preset:hover { background: var(--ui-bg); color: var(--ui-text); }
        .radius-preset.active { background: var(--ui-text); color: var(--ui-bg); border-color: var(--ui-text); }

        .shadow-presets {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-xs);
        }
        .shadow-preset {
            padding: var(--spacing-sm);
            border: 1px solid var(--ui-border);
            border-radius: var(--ui-radius);
            background: var(--ui-bg);
            font-family: var(--font-family-ui);
            font-size: var(--font-size-xs);
            color: var(--ui-text-secondary);
            cursor: pointer;
            transition: all 0.15s;
        }
        .shadow-preset:hover { background: var(--ui-bg); color: var(--ui-text); }
        .shadow-preset.active { background: var(--ui-text); color: var(--ui-bg); border-color: var(--ui-text); }

        .property-number-sm {
            width: 42px;
            height: 28px;
            border: 1px solid var(--ui-border);
            border-radius: var(--ui-radius);
            padding: 0 var(--spacing-xs);
            font-family: var(--font-family-ui);
            font-size: var(--font-size-xs);
            text-align: center;
        }
        .property-number-sm:focus { outline: none; border-color: var(--ui-text); }

        .border-width-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 4px;
        }
        .border-input-pair {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
        }
        .border-input-pair span {
            font-size: 9px;
            color: var(--ui-text-secondary);
            font-weight: 500;
        }

        .token-badge {
            display: inline-block;
            padding: 2px 6px;
            font-size: 9px;
            font-weight: 600;
            background: var(--n7);
            color: #000000;
            border-radius: 3px;
            min-width: 24px;
            text-align: center;
        }
        .token-badge:empty { display: none; }

        /* Generate Button */
        .generate-btn {
            width: 100%;
            height: 40px;
            background: #000000;
            color: #ffffff;
            border: none;
            border-radius: var(--ui-radius);
            font-family: var(--font-family-ui);
            font-size: var(--font-size-sm);
            font-weight: 600;
            cursor: pointer;
            transition: background 0.15s;
        }
        .generate-btn:hover { background: #333333; }

        /* Reset Button */
        .reset-btn {
            height: 28px;
            background: var(--ui-bg);
            color: var(--ui-text-secondary);
            border: 1px solid var(--ui-border);
            border-radius: var(--ui-radius);
            font-family: var(--font-family-ui);
            font-size: var(--font-size-xs);
            font-weight: 500;
            cursor: pointer;
            transition: all 0.15s;
        }
        .reset-btn:hover { background: var(--ui-bg); color: var(--ui-text); }

        /* Scrollbar */
        .panel-content::-webkit-scrollbar { width: 6px; }
        .panel-content::-webkit-scrollbar-track { background: transparent; }
        .panel-content::-webkit-scrollbar-thumb { background: #000000; border-radius: 0px; }
        .panel-content::-webkit-scrollbar-thumb:hover { background: #333333; }

        /* Token Color Dropdown */
        .token-dropdown {
            position: relative;
            flex: 1;
        }
        .token-dropdown-trigger {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            width: 100%;
            height: 32px;
            padding: 0 var(--spacing-sm);
            border: 1px solid var(--ui-border);
            border-radius: var(--ui-radius);
            background: var(--ui-bg);
            cursor: pointer;
            transition: border-color 0.15s;
        }
        .token-dropdown-trigger:hover { border-color: var(--ui-text-secondary); }
        .token-dropdown-trigger.is-open { border-color: var(--ui-text); }
        .token-dropdown-swatch {
            width: 20px;
            height: 20px;
            border-radius: var(--ui-radius);
            border: 1px solid var(--ui-border);
            flex-shrink: 0;
        }
        .token-dropdown-value {
            flex: 1;
            font-family: 'SF Mono', Monaco, monospace;
            font-size: var(--font-size-xs);
            color: var(--ui-text);
            text-transform: uppercase;
        }
        .token-dropdown-token {
            font-size: var(--font-size-xs);
            font-weight: 600;
            color: var(--ui-text);
            background: var(--ui-bg);
            padding: 2px 6px;
            border-radius: var(--ui-radius);
            border: 1px solid var(--ui-border);
        }
        .token-dropdown-arrow {
            width: 16px;
            height: 16px;
            color: var(--ui-text-secondary);
            transition: transform 0.15s;
        }
        .token-dropdown-trigger.is-open .token-dropdown-arrow { transform: rotate(180deg); }

        .token-dropdown-menu {
            position: absolute;
            top: calc(100% + 4px);
            left: 0;
            right: 0;
            max-height: 400px;
            overflow-y: auto;
            background: var(--ui-bg);
            border: 1px solid var(--ui-border);
            border-radius: var(--ui-radius);
            box-shadow: none;
            z-index: 100;
            display: none;
        }
        .token-dropdown-menu.is-open { display: block; }
        .token-dropdown-menu::-webkit-scrollbar { width: 6px; }
        .token-dropdown-menu::-webkit-scrollbar-track { background: transparent; }
        .token-dropdown-menu::-webkit-scrollbar-thumb { background: #000000; border-radius: 0px; }

        .token-dropdown-group {
            padding: var(--spacing-xs) var(--spacing-sm) var(--spacing-sm);
            border-bottom: 1px solid var(--ui-border);
        }
        .token-dropdown-group:last-child { border-bottom: none; }
        .token-dropdown-group-title {
            padding: var(--spacing-xs) 0;
            font-size: 10px;
            font-weight: 600;
            color: var(--ui-text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .token-dropdown-items-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 4px;
        }
        .token-dropdown-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            padding: 4px;
            cursor: pointer;
            border-radius: 2px;
            transition: background 0.1s;
        }
        .token-dropdown-item:hover { background: var(--ui-border); }
        .token-dropdown-item.is-selected { outline: 2px solid var(--ui-text); outline-offset: -1px; border-radius: 2px; }
        .token-dropdown-item-swatch {
            width: 28px;
            height: 28px;
            border-radius: 2px;
            border: 1px solid var(--ui-border);
            flex-shrink: 0;
        }
        .token-dropdown-item-token {
            font-size: 9px;
            font-weight: 600;
            color: var(--ui-text);
            text-align: center;
        }

        .token-dropdown-custom {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding: var(--spacing-sm);
            border-top: 1px solid var(--ui-border);
            background: var(--ui-bg);
        }
        .token-dropdown-custom-label {
            font-size: var(--font-size-xs);
            color: var(--ui-text-secondary);
            white-space: nowrap;
        }
        .token-dropdown-custom-picker {
            width: 24px;
            height: 24px;
            border: 1px solid var(--ui-border);
            border-radius: var(--ui-radius);
            padding: 0;
            background: none;
            cursor: pointer;
        }
        .token-dropdown-custom-picker::-webkit-color-swatch-wrapper { padding: 2px; }
        .token-dropdown-custom-picker::-webkit-color-swatch { border-radius: 0px; border: none; }
        .token-dropdown-custom-hex {
            flex: 1;
            height: 24px;
            border: 1px solid var(--ui-border);
            border-radius: var(--ui-radius);
            padding: 0 var(--spacing-xs);
            font-family: 'SF Mono', Monaco, monospace;
            font-size: 10px;
            text-transform: uppercase;
        }
        .token-dropdown-custom-hex:focus { outline: none; border-color: var(--ui-text); }
        .token-dropdown-custom-btn {
            padding: 4px 8px;
            font-size: 10px;
            font-weight: 500;
            background: var(--ui-text);
            color: var(--ui-bg);
            border: none;
            border-radius: var(--ui-radius);
            cursor: pointer;
        }
        .token-dropdown-custom-btn:hover { background: #333333; }

        /* Typography Scale Panel (right panel) */
        .typo-scale-panel {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .typo-scale-panel-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
        }

        .typo-scale-sample {
            font-weight: 600;
            color: var(--ui-text);
            line-height: 1.2;
        }

        .typo-scale-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            font-family: var(--font-family-ui);
            font-size: var(--font-size-xs);
            color: var(--ui-text-secondary);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .typo-scale-token {
            color: var(--ui-text-secondary);
        }

        /* Scale error toast */
        .scale-toast {
            position: fixed;
            bottom: 20px;
            right: 20px;
            z-index: 9999;
            background: rgba(255, 0, 98, 0.5);
            border: 2px dashed #ff0062;
            border-radius: 0;
            padding: 10px 16px;
            font-family: var(--font-family-ui);
            font-size: var(--font-size-xs);
            font-weight: 500;
            color: #ffffff;
            pointer-events: none;
            animation: scaleToastIn 0.2s ease, scaleToastOut 0.3s ease 2.5s forwards;
        }

        @keyframes scaleToastIn {
            from { opacity: 0; transform: translateY(8px); }
            to { opacity: 1; transform: translateY(0); }
        }

        @keyframes scaleToastOut {
            from { opacity: 1; transform: translateY(0); }
            to { opacity: 0; transform: translateY(8px); }
        }

        /* Font Search Input */
        .font-search-input {
            height: 32px;
            width: 100%;
            border: 1px solid var(--ui-border);
            border-radius: var(--ui-radius);
            padding: 0 var(--spacing-sm);
            font-family: var(--font-family-ui);
            font-size: var(--font-size-sm);
            background: var(--ui-bg);
            color: var(--ui-text);
            box-sizing: border-box;
        }
        .font-search-input:focus {
            outline: none;
            border-color: var(--ui-text);
        }

        /* Font Autocomplete Dropdown */
        .font-dropdown {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            max-height: 300px;
            overflow-y: auto;
            background: var(--ui-bg);
            border: 1px solid var(--ui-border);
            border-top: none;
            z-index: 200;
        }
        .font-dropdown.is-open {
            display: block;
        }
        .font-dropdown::-webkit-scrollbar { width: 6px; }
        .font-dropdown::-webkit-scrollbar-track { background: transparent; }
        .font-dropdown::-webkit-scrollbar-thumb { background: #000000; border-radius: 0px; }

        .font-dropdown-item {
            padding: 6px var(--spacing-sm);
            cursor: pointer;
            font-size: var(--font-size-sm);
            color: var(--ui-text);
            transition: background 0.1s;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .font-dropdown-item:hover {
            background: var(--ui-text);
            color: var(--ui-bg);
        }

        /* Scale error styling handled by toast */

        /* Divider between font selection and icon library */
        .typo-divider {
            border: none;
            border-top: 1px solid var(--ui-border);
            margin: 16px 0;
        }

        /* ============================================
           COLOR GRID (New Layout)
           ============================================ */
        .color-category {
            margin-bottom: var(--spacing-xl);
            border-bottom: 1px solid var(--ui-border);
            padding-bottom: var(--spacing-lg);
        }

        .color-category:last-child {
            border-bottom: none;
        }

        .color-category-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: var(--spacing-md);
        }

        .color-category-title {
            font-size: var(--font-size-sm);
            font-weight: 600;
            color: var(--ui-text);
            text-transform: lowercase;
        }

        .color-grid-labels {
            display: grid;
            grid-template-columns: 40px 1fr;
            margin-bottom: 4px;
        }

        .color-grid-labels-inner {
            display: flex;
        }

        .color-grid-label {
            flex: 1;
            font-size: 10px;
            font-weight: 500;
            color: var(--ui-text-secondary);
            text-align: center;
            text-transform: lowercase;
        }

        .color-grid-hex-row {
            display: grid;
            grid-template-columns: 40px 1fr;
            margin-bottom: 4px;
        }

        .color-grid-hex-inner {
            display: flex;
            min-width: 0;
        }

        .color-grid-hex-input {
            flex: 1;
            text-align: center;
            font-family: 'SF Mono', Monaco, monospace;
            font-size: 9px;
            color: var(--ui-text-secondary);
            background: none;
            border: none;
            padding: 2px 0;
            text-transform: uppercase;
            cursor: text;
            min-width: 0;
        }

        .color-grid-hex-input:focus {
            outline: none;
            color: var(--ui-text);
        }

        .color-grid-row {
            display: grid;
            grid-template-columns: 40px 1fr;
            align-items: center;
            gap: 0;
            margin-bottom: 2px;
        }

        .color-grid-mode-label {
            width: 40px;
            font-size: 10px;
            font-weight: 500;
            color: var(--ui-text-secondary);
            flex-shrink: 0;
            text-align: left;
        }

        .color-grid-swatches {
            display: flex;
            flex: 1;
            gap: 0;
        }

        .color-grid-swatch {
            flex: 1;
            aspect-ratio: 1.2;
            cursor: pointer;
            transition: transform 0.1s, box-shadow 0.1s;
            position: relative;
            min-height: 32px;
        }

        .color-grid-swatch:first-child {
            border-radius: var(--radius-sm) 0 0 var(--radius-sm);
        }

        .color-grid-swatch:last-child {
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }

        .color-grid-swatch:hover {
            transform: scale(1.15);
            z-index: 10;
            border-radius: var(--radius-sm);
            box-shadow: 0 2px 8px rgba(0,0,0,0.2);
        }

        .color-grid-swatch.is-selected {
            box-shadow: inset 0 0 0 2px rgba(0,0,0,0.4);
            z-index: 11;
        }

        /* Light swatch border for white/very-light colors */
        .color-grid-swatch.needs-border {
            box-shadow: inset 0 0 0 1px rgba(0,0,0,0.1);
        }

        .color-grid-swatch.needs-border:hover {
            box-shadow: inset 0 0 0 1px rgba(0,0,0,0.1), 0 2px 8px rgba(0,0,0,0.2);
        }

        /* Contrast warning on content neutral swatches and labels */
        .color-grid-swatch.contrast-warn {
            box-shadow: inset 0 0 0 2px #dc2626;
            z-index: 11;
        }

        .color-grid-label.has-contrast-warn {
            color: #dc2626;
        }

        .contrast-warn-badge {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #dc2626;
            color: #fff;
            font-size: 7px;
            font-weight: 700;
            line-height: 10px;
            text-align: center;
            margin-right: 2px;
            vertical-align: middle;
            cursor: help;
            flex-shrink: 0;
        }

        .contrast-warn-badge::after {
            content: '!';
        }

        /* Properties panel: color scale list */
        .color-scale-props-list {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .color-scale-prop-row {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding: var(--spacing-xs) 0;
        }

        .color-scale-prop-swatch {
            width: 28px;
            height: 28px;
            border-radius: var(--ui-radius);
            border: 1px solid var(--ui-border);
            flex-shrink: 0;
            cursor: pointer;
            position: relative;
        }

        .color-scale-prop-swatch input[type="color"] {
            position: absolute;
            top: -1px;
            left: -1px;
            width: calc(100% + 2px);
            height: calc(100% + 2px);
            opacity: 0.01;
            cursor: pointer;
            border: none;
            padding: 0;
            -webkit-appearance: none;
            appearance: none;
        }
        .color-scale-prop-swatch input[type="color"]::-webkit-color-swatch-wrapper {
            padding: 0;
        }
        .color-scale-prop-swatch input[type="color"]::-webkit-color-swatch {
            border: none;
        }

        .color-scale-prop-label {
            width: 32px;
            font-size: var(--font-size-xs);
            font-weight: 600;
            color: var(--ui-text);
            flex-shrink: 0;
        }

        .color-scale-prop-hex {
            flex: 1;
            height: 28px;
            border: 1px solid var(--ui-border);
            border-radius: var(--ui-radius);
            padding: 0 var(--spacing-sm);
            font-family: 'SF Mono', Monaco, monospace;
            font-size: var(--font-size-xs);
            text-transform: uppercase;
        }

        .color-scale-prop-hex:focus {
            outline: none;
            border-color: var(--ui-text);
        }

        /* ============================================
           TYPOGRAPHY SECTION
           ============================================ */
        .typography-row {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-md);
        }
        .typography-label {
            width: 80px;
            font-size: 12px;
            color: var(--ui-text-secondary);
            flex-shrink: 0;
        }
        .font-select-wrapper {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }
        .font-select {
            height: 32px;
            width: 100%;
            border: 1px solid var(--ui-border);
            border-radius: var(--ui-radius);
            padding: 0 var(--spacing-sm);
            font-family: var(--font-family-ui);
            font-size: var(--font-size-sm);
            background: var(--ui-bg);
            color: var(--ui-text);
            cursor: pointer;
        }
        .font-select:focus {
            outline: none;
            border-color: var(--ui-text);
        }
        .font-custom-input {
            height: 28px;
            width: 100%;
            border: 1px solid var(--ui-border);
            border-radius: var(--ui-radius);
            padding: 0 var(--spacing-sm);
            font-family: var(--font-family-ui);
            font-size: var(--font-size-xs);
            background: var(--ui-bg);
            color: var(--ui-text);
        }
        .font-custom-input:focus {
            outline: none;
            border-color: var(--ui-text);
            background: var(--ui-bg);
        }
        /* Size Stepper: [ - ] [value] [ + ] */
        .size-stepper {
            display: inline-flex;
            align-items: stretch;
            height: 40px;
            width: 100px;
            border: 1px solid #000;
            border-radius: 0;
            overflow: hidden;
        }

        .size-stepper-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            flex-shrink: 0;
            background: none;
            border: none;
            cursor: pointer;
            font-family: var(--font-family-ui);
            font-size: 16px;
            font-weight: 500;
            color: #000;
            padding: 0;
            user-select: none;
        }

        .size-stepper-btn:hover {
            background: rgba(0, 0, 0, 0.05);
        }

        .size-stepper-btn:active {
            background: rgba(0, 0, 0, 0.1);
        }

        .size-stepper-value {
            flex: 1;
            min-width: 0;
            border: none;
            border-left: 1px solid #000;
            border-right: 1px solid #000;
            background: none;
            font-family: var(--font-family-ui);
            font-size: var(--font-size-sm);
            font-weight: 500;
            text-align: center;
            color: #000;
            -moz-appearance: textfield;
            outline: none;
            padding: 0;
        }

        .size-stepper-value::-webkit-outer-spin-button,
        .size-stepper-value::-webkit-inner-spin-button {
            -webkit-appearance: none;
            margin: 0;
        }
        .typography-scale-preview {
            background: var(--ui-bg);
            border-radius: var(--ui-radius);
            padding: var(--spacing-md);
            margin-top: var(--spacing-md);
            border: 1px solid var(--ui-border);
        }
        .typography-scale-header {
            font-size: var(--font-size-xs);
            font-weight: 600;
            color: var(--ui-text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: var(--spacing-sm);
            padding-bottom: var(--spacing-xs);
            border-bottom: 1px solid var(--ui-border);
        }
        .typography-scale-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: var(--spacing-xs) 0;
        }
        .scale-name {
            font-size: var(--font-size-xs);
            color: var(--ui-text);
        }
        .scale-value {
            font-family: 'SF Mono', Monaco, monospace;
            font-size: var(--font-size-xs);
            color: var(--ui-text);
            font-weight: 500;
        }

        /* ============================================
           ACCESSIBILITY ERROR STATES
           ============================================ */
        .a11y-error-tag {
            color: #ff0062;
            font-size: var(--font-size-xs);
            font-weight: 500;
        }

        /* Properties panel warning indicator next to title */
        .props-a11y-warning {
            color: #ff0062;
            font-size: var(--font-size-xs);
            font-family: var(--font-family-ui);
            font-weight: 500;
            margin-left: var(--spacing-xs);
        }

        #selected-label {
            display: flex;
            align-items: center;
        }

        /* Component-specific accessibility errors in props-section */
        .props-a11y-errors {
            background: rgba(255, 0, 98, 0.5);
            border: 2px dashed #ff0062;
            border-radius: 0;
            padding: var(--spacing-md);
            margin-bottom: var(--spacing-md);
        }

        .props-a11y-header {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            margin-bottom: var(--spacing-sm);
        }

        .props-a11y-icon {
            color: #ffffff;
            font-size: 14px;
        }

        .props-a11y-title {
            font-family: var(--font-family-ui);
            font-size: var(--font-size-sm);
            font-weight: 600;
            color: #ffffff;
        }

        .props-a11y-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }

        .props-a11y-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: var(--spacing-sm) var(--spacing-md);
            background: #ffffff;
            border-radius: 0;
            border: none;
        }

        .props-a11y-check {
            font-family: var(--font-family-ui);
            font-size: var(--font-size-xs);
            font-weight: 500;
            color: #ff0062;
        }

        .props-a11y-ratio {
            font-family: var(--font-family-ui);
            font-size: var(--font-size-xs);
            color: #ff0062;
        }

        /* ============================================
           MOBILE RESPONSIVE - TAB NAVIGATION
           ============================================ */

        /* Mobile tabs - hidden by default on desktop */
        .mobile-tabs {
            display: none;
        }

        /* Mobile back button - hidden by default */
        .mobile-back-btn {
            display: none;
        }

        /* Responsive breakpoint at 800px */
        @media (max-width: 800px) {
            /* Show mobile tab navigation */
            .mobile-tabs {
                display: flex;
                position: sticky;
                top: 0;
                z-index: 200;
                background: var(--ui-bg);
                border-bottom: 1px solid var(--ui-border);
                padding: var(--spacing-xs);
                gap: var(--spacing-xs);
            }

            .mobile-tab {
                flex: 1;
                padding: var(--spacing-sm) var(--spacing-md);
                border: none;
                border-radius: var(--ui-radius);
                background: transparent;
                font-family: var(--font-family-ui);
                font-size: var(--font-size-sm);
                font-weight: 500;
                color: var(--ui-text-secondary);
                cursor: pointer;
                transition: all 0.15s;
            }

            .mobile-tab:hover {
                background: var(--ui-bg);
                color: var(--ui-text);
            }

            .mobile-tab.active {
                background: var(--ui-text);
                color: var(--ui-bg);
            }

            /* Switch to single column layout */
            .editor-container {
                grid-template-columns: 1fr;
                height: calc(100vh - 49px); /* Account for tab bar height */
            }

            /* Hide all panels by default */
            .panel {
                display: none;
            }

            /* Show only the active panel */
            .panel.active {
                display: flex;
            }

            /* Remove side borders on mobile */
            .panel-colors {
                border-right: none;
            }

            .panel-properties {
                border-left: none;
            }

            /* Back button + panel-header side-by-side */
            .panel-header {
                flex-direction: row;
                align-items: center;
                gap: 0;
                padding: 0;
                min-height: auto;
            }

            .panel-header h2 {
                margin: 0;
            }

            .panel-header .subtitle {
                margin: 0;
            }

            .mobile-back-btn {
                display: flex;
                align-items: center;
                justify-content: center;
                width: 48px;
                height: 72px;
                flex-shrink: 0;
                border: none;
                border-right: 1px solid var(--ui-border);
                background: var(--ui-bg);
                color: var(--ui-text);
                cursor: pointer;
                padding: 0;
            }

            .mobile-back-btn:hover {
                background: var(--ui-bg-hover, #f5f5f5);
            }

            .mobile-back-btn svg {
                width: 16px;
                height: 16px;
            }

            .panel-header-text-wrap {
                display: flex;
                flex-direction: column;
                justify-content: center;
                padding: var(--spacing-md) var(--spacing-lg);
            }

            /* Adjust component cards for mobile */
            .state-items {
                flex-wrap: wrap;
            }

            /* Make preview cards responsive */
            .preview-card {
                width: 100%;
                max-width: 300px;
            }
        }

        /* Platform-specific: hide hover state rows on mobile */
        body.platform-mobile .state-row:has(.is-hover) {
            display: none !important;
        }
        body.platform-mobile .hover-state-row {
            display: none !important;
        }
        body.platform-mobile .preview-card.is-hover {
            display: none !important;
        }

        /* Platform-specific: hide small sizes on mobile (except status buttons) */
        body.platform-mobile .btn-sm,
        body.platform-mobile .icon-btn-sm,
        body.platform-mobile .form-input-sm,
        body.platform-mobile .form-select-sm {
            display: none !important;
        }
        body.platform-mobile [data-component="btn-status"] .btn-sm {
            display: inline-flex !important;
        }
        body.platform-mobile .input-field:has(.form-input-sm),
        body.platform-mobile .input-field:has(.form-select-sm) {
            display: none !important;
        }

        body.platform-mobile .web-only {
            display: none !important;
        }

        /* Website platform: hide components not relevant to marketing/landing sites */
        body.platform-website .website-hide {
            display: none !important;
        }

        /* Website Scaffold */
        .website-scaffold {
            border: 1px solid var(--ui-border);
            display: flex;
            flex-direction: column;
            overflow: hidden;
            font-family: 'DM Mono', monospace;
        }
        .website-scaffold-header {
            border-bottom: 1px solid var(--ui-border);
            background: rgba(128,128,128,0.08);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 6px 10px;
            height: 28px;
        }
        .website-scaffold-hero {
            border-bottom: 1px solid var(--ui-border);
            background: rgba(128,128,128,0.04);
            display: flex;
            align-items: center;
            justify-content: center;
            height: 52px;
        }
        .website-scaffold-content,
        .website-scaffold-section2 {
            border-bottom: 1px solid var(--ui-border);
            display: flex;
            align-items: stretch;
            justify-content: center;
            padding: 8px 12px;
            min-height: 56px;
        }
        .website-scaffold-container {
            flex: 1;
            border: 1px dashed var(--ui-border);
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 6px;
        }
        .website-scaffold-cols {
            display: flex;
            gap: 4px;
            flex: 1;
        }
        .website-scaffold-col {
            flex: 1;
            border: 1px dashed var(--ui-border);
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 28px;
        }
        .website-scaffold-footer {
            background: rgba(128,128,128,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            height: 28px;
        }

        /* ============================================
           NEW LAYOUT: NAV SIDEBAR + WORKING AREA
           ============================================ */

        /* Hide old 3-column layout (kept for reference, not used) */
        .editor-container {
            display: none !important;
        }

        /* Hide old mobile tabs */
        .mobile-tabs {
            display: none !important;
        }

        /* App Layout: nav sidebar + content area */
        .app-layout {
            display: grid;
            grid-template-columns: 180px 1fr;
            height: calc(100vh - 63px);
            overflow: hidden;
        }

        /* When scope section is active, it takes the full content area */
        .app-layout.scope-active .section-fullpage[data-section="scope"] {
            display: flex;
        }
        .app-layout.scope-active #working-area {
            display: none !important;
        }
        .app-layout:not(.scope-active) .section-fullpage[data-section="scope"] {
            display: none !important;
        }
        .app-layout:not(.scope-active) #working-area {
            display: grid !important;
        }

        /* ---- Left Navigation Sidebar ---- */
        .section-nav {
            display: flex;
            flex-direction: column;
            border-right: 1px solid var(--ui-border);
            background: var(--ui-bg);
            padding: var(--spacing-sm) 0;
            overflow-y: auto;
            gap: 2px;
        }

        .nav-scope-btn {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border: none;
            background: none;
            cursor: pointer;
            font-family: var(--font-family-ui);
            font-size: 13px;
            font-weight: 500;
            color: var(--ui-text-secondary);
            text-align: left;
            width: 100%;
        }

        .nav-scope-btn:hover {
            color: var(--ui-text);
        }

        .nav-scope-btn.active {
            color: #ff0062;
        }

        .nav-scope-btn .nav-chevron {
            font-size: 12px;
            color: #ff0062;
            opacity: 0;
            transition: opacity 0.15s;
        }

        .nav-scope-btn.active .nav-chevron {
            opacity: 1;
        }

        .nav-scope-value {
            color: #ff0062;
            font-weight: 600;
            margin-left: 2px;
        }

        .nav-item {
            display: flex;
            flex-direction: row;
            align-items: center;
            justify-content: flex-start;
            gap: 6px;
            padding: 8px 16px;
            border: none;
            background: none;
            cursor: pointer;
            font-family: var(--font-family-ui);
            font-size: 13px;
            font-weight: 500;
            color: var(--ui-text-secondary);
            transition: all 0.15s;
            position: relative;
            text-align: left;
            width: 100%;
        }

        .nav-item:hover {
            color: var(--ui-text);
        }

        .nav-item.active {
            color: #ff0062;
        }

        .nav-chevron {
            font-size: 12px;
            color: #ff0062;
            opacity: 0;
            transition: opacity 0.15s;
        }

        .nav-item.active .nav-chevron {
            opacity: 1;
        }

        .nav-label {
            text-transform: lowercase;
            white-space: nowrap;
        }

        /* ---- Scope Full Page ---- */
        .section-fullpage {
            overflow-y: auto;
            padding: 48px;
            display: flex;
            align-items: flex-start;
            justify-content: center;
        }

        .scope-page {
            max-width: 560px;
            width: 100%;
            padding-top: 40px;
        }

        .scope-title {
            font-family: var(--font-family-ui);
            font-size: 24px;
            font-weight: 600;
            margin: 0 0 12px;
        }

        .scope-description {
            font-family: var(--font-family-ui);
            font-size: 13px;
            color: var(--ui-text-secondary);
            line-height: 1.6;
            margin: 0 0 32px;
        }

        .scope-options {
            display: flex;
            gap: 16px;
            margin-bottom: 40px;
        }

        .scope-option-btn {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            padding: 24px 16px;
            height: auto !important;
            border: 1px solid #000;
            background: #fff;
            color: #000;
            font-family: var(--font-family-ui);
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.15s;
            box-sizing: border-box;
        }

        .scope-option-btn.active {
            background: #000;
            color: #fff;
        }

        .scope-option-title {
            font-size: 15px;
            font-weight: 600;
        }

        .scope-detail {
            font-size: 11px;
            font-weight: 400;
            opacity: 0.7;
        }

        .scope-info {
            border-top: 1px solid var(--ui-border);
            padding-top: 24px;
            font-family: var(--font-family-ui);
            font-size: 12px;
            line-height: 1.8;
            color: var(--ui-text-secondary);
        }

        .scope-info h4 {
            font-size: 13px;
            font-weight: 600;
            color: var(--ui-text);
            margin: 0 0 8px;
        }

        .scope-info ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .scope-info li {
            padding: 4px 0;
        }

        /* ---- Working Area (2-panel split) ---- */
        #working-area {
            display: grid;
            grid-template-columns: 1fr 1fr;
            overflow: hidden;
        }

        .work-panel {
            display: flex;
            flex-direction: column;
            overflow: hidden;
        }

        .work-panel-left {
            background: var(--ui-bg-secondary);
            overflow: hidden;
        }

        .work-panel-right {
            border-left: 1px solid var(--ui-border);
            background: var(--ui-bg);
            overflow-y: auto;
        }

        .work-panel-content {
            flex: 1;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        /* Section content wrapper */
        .section-content-wrapper {
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        /* Section content containers */
        .section-content {
            padding: var(--spacing-lg);
            flex: 1;
            overflow-y: auto;
        }

        .section-content-header {
            padding: var(--spacing-lg);
            border-bottom: 1px solid var(--ui-border);
            min-height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-sizing: border-box;
            font-family: var(--font-family-ui);
            flex-shrink: 0;
        }

        .section-content-header h2 {
            font-size: var(--font-size-lg);
            font-weight: 600;
            margin: 0 0 2px;
            text-transform: lowercase;
        }

        .section-content-header-text {
            display: flex;
            flex-direction: column;
        }

        .section-content-subtitle {
            font-size: 11px;
            color: var(--ui-text-secondary);
            margin: 0;
        }

        /* For Typography section */
        .section-content-wrapper[data-section="typography"] .section-content {
            max-width: 600px;
        }

        /* ---- Placeholder sections ---- */
        .section-placeholder {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-height: 400px;
            text-align: center;
            color: var(--ui-text-secondary);
            font-family: var(--font-family-ui);
            gap: 12px;
        }

        .section-placeholder h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--ui-text);
            margin: 0;
        }

        .section-placeholder p {
            font-size: 13px;
            max-width: 280px;
            line-height: 1.5;
            margin: 0;
        }

        .coming-soon-badge {
            display: inline-block;
            padding: 4px 12px;
            border: 1px solid var(--ui-border);
            font-size: 11px;
            font-weight: 500;
            color: var(--ui-text-secondary);
        }

        /* Panel header text wrap - transparent on desktop */
        .panel-header-text-wrap {
            display: contents;
        }

        /* Scope proceed button */
        .scope-proceed-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-top: 32px;
            padding: 14px 32px;
            border: 1px solid #000;
            background: #000;
            color: #fff;
            font-family: var(--font-family-ui);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
        }

        .scope-proceed-btn svg {
            width: 16px;
            height: 16px;
        }

        /* ---- Mobile elements hidden on desktop ---- */
        .mobile-menu-btn {
            display: none;
        }
        .mobile-nav-dropdown {
            display: none;
        }
        .export-short {
            display: none;
        }
        .start-over-icon {
            display: none;
            width: 16px;
            height: 16px;
        }

        /* ---- Mobile responsive for new layout ---- */
        @media (max-width: 800px) {
            .app-layout {
                grid-template-columns: 1fr;
                grid-template-rows: auto 1fr;
            }

            /* Hide sidebar nav entirely on mobile */
            .section-nav {
                display: none;
            }

            /* Hamburger menu button */
            .mobile-menu-btn {
                display: flex;
                align-items: center;
                justify-content: center;
                position: absolute;
                top: 0;
                left: 0;
                width: 48px;
                height: 72px;
                border: none;
                border-right: 1px solid var(--ui-border);
                background: var(--ui-bg);
                cursor: pointer;
                z-index: 150;
                padding: 0;
            }

            .mobile-menu-btn svg {
                width: 18px;
                height: 18px;
            }

            /* Mobile nav dropdown */
            .mobile-nav-dropdown {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--ui-bg);
                border-bottom: 1px solid var(--ui-border);
                z-index: 200;
                flex-direction: column;
            }

            .mobile-nav-dropdown.open {
                display: flex;
            }

            .mobile-nav-dropdown button {
                display: flex;
                align-items: center;
                gap: 8px;
                width: 100%;
                padding: 12px 16px;
                border: none;
                border-bottom: 1px solid var(--ui-border);
                background: var(--ui-bg);
                font-family: var(--font-family-ui);
                font-size: 13px;
                font-weight: 500;
                color: var(--ui-text);
                cursor: pointer;
                text-align: left;
            }

            .mobile-nav-dropdown button:last-child {
                border-bottom: none;
            }

            .mobile-nav-dropdown button:hover {
                background: var(--ui-bg-hover, #f5f5f5);
            }

            .mobile-nav-dropdown button.active {
                background: #000;
                color: #fff;
            }

            #mobile-scope-value {
                color: var(--ui-text-secondary);
                font-weight: 400;
            }

            .mobile-nav-dropdown button.active #mobile-scope-value {
                color: rgba(255,255,255,0.7);
            }

            /* Make room for hamburger in section-content-header */
            .section-content-header {
                padding-left: 56px;
            }

            .work-panel-left {
                position: relative;
            }

            #working-area {
                grid-template-columns: 1fr;
                grid-template-rows: 1fr;
            }

            .work-panel-right {
                display: none;
                border-left: none;
                border-top: 1px solid var(--ui-border);
            }

            /* Properties panel: inline below header when active */
            body.mobile-props-active .work-panel-left .section-content,
            body.mobile-props-active .work-panel-left .component-section-content {
                display: none !important;
            }

            body.mobile-props-active .work-panel-right {
                display: flex;
                position: static;
                border-left: none;
                border-top: 1px solid var(--ui-border);
            }

            .section-fullpage {
                padding: 24px 16px;
            }

            .scope-options {
                flex-direction: column;
            }

            /* Scope proceed button - full width on mobile */
            .scope-proceed-btn {
                width: 100%;
                box-sizing: border-box;
            }

            /* Start over: icon only */
            .start-over-text {
                display: none;
            }
            .start-over-icon {
                display: block;
            }
            .start-over-btn {
                width: 42px !important;
                height: 42px !important;
                padding: 0 !important;
                justify-content: center !important;
            }
            .start-over-btn svg {
                width: 16px;
                height: 16px;
            }

            /* Export: short text */
            .export-full {
                display: none;
            }
            .export-short {
                display: inline;
            }
        }

        /* ============================================
           LAYOUT SECTION
           ============================================ */

        .layout-help-text {
            font-family: var(--font-family-ui);
            font-size: 11px;
            color: var(--ui-text-secondary);
            line-height: 1.5;
            margin: 0 0 12px;
        }

        .layout-option-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-bottom: 16px;
        }

        .layout-option-group--inline {
            flex-direction: row;
            flex-wrap: wrap;
        }

        .layout-option-btn {
            display: flex;
            flex-direction: column;
            gap: 2px;
            padding: 10px 14px;
            border: 1px solid var(--ui-border);
            background: transparent;
            color: var(--ui-text-primary);
            font-family: var(--font-family-ui);
            font-size: 12px;
            cursor: pointer;
            transition: border-color 0.15s, background 0.15s;
            text-align: left;
        }

        .layout-option-btn:hover {
            border-color: var(--ui-text-secondary);
        }

        .layout-option-btn.active {
            border-color: var(--ui-text);
            background: var(--ui-text);
            color: var(--ui-bg);
        }

        .layout-option-btn--small {
            padding: 6px 14px;
            min-width: 48px;
            text-align: center;
            align-items: center;
        }

        .layout-option-btn--medium {
            padding: 8px 16px;
            text-align: center;
            align-items: center;
        }

        .layout-option-title {
            font-weight: 600;
            font-size: 12px;
        }

        .layout-option-detail {
            font-size: 10px;
            color: var(--ui-text-secondary);
        }

        .layout-sub-field {
            margin-bottom: 14px;
        }

        .layout-field {
            margin-top: 12px;
        }

        .layout-field-label {
            display: block;
            font-family: var(--font-family-ui);
            font-size: 11px;
            font-weight: 500;
            color: var(--ui-text-secondary);
            margin-bottom: 6px;
        }

        .layout-field-row {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .layout-field-input {
            width: 80px;
            padding: 5px 8px;
            border: 1px solid var(--ui-border);
            background: transparent;
            color: var(--ui-text-primary);
            font-family: var(--font-family-ui);
            font-size: 12px;
            outline: none;
        }

        .layout-field-input:focus {
            border-color: #ff0062;
        }

        .layout-field-unit {
            font-family: var(--font-family-ui);
            font-size: 11px;
            color: var(--ui-text-secondary);
        }

        .layout-diagram {
            margin: 12px 0 4px;
        }

        .layout-ascii {
            font-family: 'DM Mono', monospace;
            font-size: 10px;
            line-height: 1.4;
            color: var(--ui-text-secondary);
            padding: 12px;
            border: 1px solid var(--ui-border);
            overflow-x: auto;
            white-space: pre;
            margin: 0;
        }

        .layout-coming-soon {
            padding: 48px 0;
        }

        /* Visual Scaffold */
        .layout-scaffold {
            border: 1px solid var(--ui-border);
            min-height: 220px;
            display: flex;
            overflow: hidden;
        }
        .layout-scaffold.nav-left {
            flex-direction: row;
        }
        .layout-scaffold.nav-top {
            flex-direction: column;
        }
        .layout-scaffold-nav {
            border-right: 1px solid var(--ui-border);
            background: rgba(128, 128, 128, 0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            flex-shrink: 0;
        }
        .nav-top .layout-scaffold-nav {
            border-right: none;
            border-bottom: 1px solid var(--ui-border);
            min-width: unset;
            width: 100%;
        }
        .layout-scaffold-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }
        .layout-scaffold-header {
            border-bottom: 1px solid var(--ui-border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 10px;
            flex-shrink: 0;
            height: 36px;
        }
        .layout-scaffold-grid {
            flex: 1;
            display: flex;
            gap: 16px;
            padding: 8px;
            position: relative;
        }
        .layout-scaffold-filter {
            border-right: 1px solid var(--ui-border);
            width: 60px;
            min-width: 40px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(128, 128, 128, 0.03);
        }
        .layout-scaffold-col {
            flex: 1;
            border: 1px dashed var(--ui-border);
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 80px;
        }
        .layout-scaffold-gutter-label {
            position: absolute;
            bottom: 2px;
            right: 8px;
        }
        .scaffold-label {
            font-family: 'DM Mono', monospace;
            font-size: 10px;
            color: var(--ui-text-secondary);
            white-space: nowrap;
        }
        .scaffold-label-right {
            opacity: 0.6;
        }

        /* Mobile Scaffold */
        .mobile-scaffold {
            border: 1px solid var(--ui-border);
            border-radius: 16px;
            width: 180px;
            min-height: 340px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            overflow: hidden;
            position: relative;
        }
        .mobile-scaffold-status {
            height: 20px;
            border-bottom: 1px solid var(--ui-border);
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(128, 128, 128, 0.05);
            flex-shrink: 0;
        }
        .mobile-scaffold-appbar {
            height: 32px;
            border-bottom: 1px solid var(--ui-border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 10px;
            flex-shrink: 0;
        }
        .mobile-scaffold-content {
            flex: 1;
            display: flex;
            min-height: 140px;
        }
        .mobile-scaffold-margins {
            width: 24px;
            flex-shrink: 0;
            border-right: 1px dashed var(--ui-border);
            display: flex;
            align-items: center;
            justify-content: center;
            writing-mode: vertical-rl;
            text-orientation: mixed;
            background: rgba(128, 128, 128, 0.03);
        }
        .mobile-scaffold-margins:last-child {
            border-right: none;
            border-left: 1px dashed var(--ui-border);
        }
        .mobile-scaffold-body {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .mobile-scaffold-fab {
            position: absolute;
            bottom: 50px;
            right: 12px;
            width: 32px;
            height: 32px;
            border: 1px solid var(--ui-border);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(128, 128, 128, 0.06);
        }
        .mobile-scaffold-bottombar {
            height: 36px;
            border-top: 1px solid var(--ui-border);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            background: rgba(128, 128, 128, 0.05);
        }
        .mobile-scaffold-bottombar.bar-floating {
            margin: 0 8px 8px;
            border: 1px solid var(--ui-border);
            border-radius: 16px;
        }
        .mobile-scaffold-bottombar.bar-full-width {
            border-radius: 0;
        }