        /* =============================================
           SOAK COMMON STYLES
           Shared across all soak HTML templates
           ============================================= */

        /* Header bar */
        .soak-header {
            background-color: #1a1a1a;
            color: #fff;
            padding: 0.4rem 1rem;
            font-size: 0.85rem;
            font-weight: 500;
            position: sticky;
            top: 0;
            z-index: 1050;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .soak-header .brand { letter-spacing: 0.5px; }
        .soak-header a { color: #888; font-size: 0.7rem; text-decoration: none; display: flex; align-items: center; gap: 0.35rem; }
        .soak-header a:hover { color: #aaa; }

        /* Restrained heading sizes */
        h1 { font-size: 1.4rem; font-weight: 600; margin-bottom: 0.5rem; }
        h2 { font-size: 1.15rem; font-weight: 600; margin-top: 1.5rem; margin-bottom: 0.5rem; color: #212529; }
        h3 { font-size: 1rem; font-weight: 600; margin-top: 1rem; margin-bottom: 0.4rem; }
        h4 { font-size: 0.875rem; font-weight: 600; margin-top: 0.75rem; margin-bottom: 0.25rem; color: #495057; }
        h5 { font-size: 0.8rem; font-weight: 600; }
        h6 { font-size: 0.75rem; font-weight: 600; }

        /* Tighter card spacing */
        .card { margin-bottom: 0.75rem; }
        .card-header { padding: 0.5rem 0.75rem; font-size: 0.85rem; }
        .card-body { padding: 0.75rem; }
        .card-title { font-size: 0.9rem; margin-bottom: 0.25rem; }

        hr { margin-top: 1rem; margin-bottom: 1rem; }

        /* Screen footer */
        .screen-footer {
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid #dee2e6;
            color: #6c757d;
            font-size: 0.8rem;
        }

        /* Print styles */
        @media print {
            .soak-header {
                position: static;
                background: none;
                color: #333;
                border-bottom: 1px solid #ccc;
                padding: 0.25rem 0;
                margin-bottom: 1rem;
            }
            body { padding-top: 0; }
            @page { margin-bottom: 2cm; }
            .print-footer {
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                height: 1.5cm;
                text-align: center;
                font-size: 0.7rem;
                color: #666;
                border-top: 1px solid #ddd;
                padding-top: 0.25cm;
            }
            .screen-footer { display: none; }
            .floating-nav { display: none !important; }
            .main-content { margin-right: 0; }
        }
        @media screen {
            .print-footer { display: none; }
        }

        /* Floating navigation (used by comparison & coverage) */
        .floating-nav {
            position: fixed;
            top: 56px;
            right: 20px;
            width: 170px;
            max-height: calc(100vh - 76px);
            overflow-y: auto;
            z-index: 99;
            font-size: 0.7rem;
        }
        .floating-nav .nav-link {
            padding: 0.2rem 0.4rem;
            color: #666;
            border-left: 2px solid transparent;
        }
        .floating-nav .nav-link:hover {
            color: #007bff;
            border-left-color: #007bff;
        }
        .floating-nav .nav-link.active {
            color: #007bff;
            font-weight: bold;
            border-left-color: #007bff;
        }
        .floating-nav .nav-section {
            font-weight: bold;
            color: #333;
            padding: 0.3rem 0.4rem 0.15rem;
            margin-top: 0.3rem;
            border-bottom: 1px solid #ddd;
            font-size: 0.65rem;
            text-transform: uppercase;
            letter-spacing: 0.3px;
        }
        .floating-nav .nav-section:first-child { margin-top: 0; }

        .main-content { margin-right: 190px; }
        @media (max-width: 1200px) {
            .floating-nav { display: none; }
            .main-content { margin-right: 0; }
        }

        html { scroll-behavior: smooth; }

        /* =============================================
           TAB NAVIGATION
           ============================================= */
        .soak-tabs {
            display: flex;
            gap: 0;
            border-bottom: 2px solid #e1e8ed;
            margin-bottom: 1.5rem;
        }
        .soak-tab {
            padding: 0.75rem 1.25rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: #666;
            background: none;
            border: none;
            cursor: pointer;
            position: relative;
            transition: color 0.2s;
        }
        .soak-tab:hover { color: #333; }
        .soak-tab.active {
            color: #2980b9;
        }
        .soak-tab.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: #2980b9;
        }
        .soak-tab-panel { display: none; }
        .soak-tab-panel.active { display: block; }

        /* =============================================
           SELF-SIMILARITY MATRIX
           ============================================= */
        .self-similarity-table {
            border-collapse: collapse;
            font-size: 0.8rem;
            margin: 1rem 0;
        }
        .self-similarity-table th,
        .self-similarity-table td {
            padding: 0.4rem 0.5rem;
            text-align: center;
            border: 1px solid #e1e8ed;
        }
        .self-similarity-table th {
            background: #f8f9fa;
            font-weight: 600;
            max-width: 120px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .self-similarity-table th.row-header {
            text-align: left;
        }
        .self-similarity-cell {
            cursor: pointer;
            transition: transform 0.1s, box-shadow 0.1s;
            min-width: 50px;
        }
        .self-similarity-cell:hover {
            transform: scale(1.05);
            box-shadow: 0 2px 8px rgba(0,0,0,0.15);
            z-index: 10;
            position: relative;
        }
        .self-similarity-cell.diagonal {
            background: #f0f0f0 !important;
            color: #999;
            cursor: default;
        }

        /* similarity colour scale matching web app (3 colours) */
        /* < 0.5: red, 0.5-0.7: yellow, >= 0.7: green */
        .sim-high { background: rgb(80, 200, 90); color: #333; }
        .sim-medium { background: rgb(240, 200, 90); color: #333; }
        .sim-low { background: rgb(200, 80, 80); color: white; }

        /* =============================================
           TOGGLE SWITCH
           ============================================= */
        .toggle-switch {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.8rem;
            color: #666;
        }
        .toggle-switch input[type="checkbox"] {
            display: none;
        }
        .toggle-switch .toggle-track {
            width: 40px;
            height: 20px;
            background: #ccc;
            border-radius: 10px;
            position: relative;
            cursor: pointer;
            transition: background 0.2s;
        }
        .toggle-switch .toggle-track::after {
            content: '';
            position: absolute;
            width: 16px;
            height: 16px;
            background: white;
            border-radius: 50%;
            top: 2px;
            left: 2px;
            transition: left 0.2s;
        }
        .toggle-switch input:checked + .toggle-track {
            background: #2980b9;
        }
        .toggle-switch input:checked + .toggle-track::after {
            left: 22px;
        }
        .toggle-switch .toggle-label {
            cursor: pointer;
        }

        /* =============================================
           OFFCANVAS / INSPECTOR PANEL
           ============================================= */
        :root {
            --header-height: 42px;
        }
        .offcanvas-panel {
            position: fixed;
            top: var(--header-height);
            right: 0;
            width: 400px;
            max-width: 90vw;
            height: calc(100vh - var(--header-height));
            background: white;
            box-shadow: -4px 0 20px rgba(0,0,0,0.15);
            z-index: 1040;
            transform: translateX(100%);
            transition: transform 0.3s ease;
            overflow-y: auto;
        }
        .offcanvas-panel.open {
            transform: translateX(0);
        }
        .offcanvas-header {
            padding: 1rem;
            border-bottom: 1px solid #e1e8ed;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: sticky;
            top: 0;
            background: white;
            z-index: 10;
        }
        .offcanvas-title {
            font-size: 1rem;
            font-weight: 600;
            margin: 0;
        }
        .offcanvas-close {
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: #666;
            padding: 0;
            line-height: 1;
        }
        .offcanvas-close:hover { color: #333; }
        .offcanvas-body {
            padding: 1rem;
        }
        .offcanvas-backdrop {
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.3);
            z-index: 1035;
            display: none;
        }
        .offcanvas-backdrop.open {
            display: block;
        }

        /* inspector-specific styles */
        .inspector-theme {
            background: #f8f9fa;
            border-radius: 6px;
            padding: 1rem;
            margin-bottom: 1rem;
        }
        .inspector-theme-name {
            font-weight: 600;
            color: #2c3e50;
            margin-bottom: 0.5rem;
        }
        .inspector-theme-description {
            font-size: 0.9rem;
            color: #555;
            line-height: 1.5;
        }
        .inspector-similarity {
            text-align: center;
            padding: 1rem;
            margin: 1rem 0;
            border-radius: 6px;
        }
        .inspector-similarity-value {
            font-size: 2rem;
            font-weight: 700;
        }
        .inspector-similarity-label {
            font-size: 0.8rem;
            color: #666;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        /* =============================================
           CDN FALLBACK MESSAGE
           ============================================= */
        .cdn-fallback-message {
            background: #fff3cd;
            border: 1px solid #ffc107;
            border-radius: 4px;
            padding: 0.75rem 1rem;
            margin-bottom: 1rem;
            font-size: 0.85rem;
            color: #856404;
        }

        @media print {
            .soak-tabs { display: none; }
            .soak-tab-panel { display: block !important; }
            .offcanvas-panel { display: none !important; }
            .offcanvas-backdrop { display: none !important; }
        }
