:root {
            --primary: #2563eb;
            --primary-hover: #1d4ed8;
            --dark: #0f172a;
            --slate-600: #475569;
            --slate-500: #64748b;
            --slate-400: #94a3b8;
            --slate-200: #e2e8f0;
            --slate-100: #f1f5f9;
            --slate-50: #f8fafc;
            --glass-bg: rgba(255, 255, 255, 0.85);
            --radius-xl: 1.5rem;
            --radius-lg: 1rem;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: 'Inter', system-ui, sans-serif;
            background: radial-gradient(circle at top right, #f8fafc, #cbd5e1);
            color: var(--dark);
            line-height: 1.6;
            min-height: 100vh;
            padding: 1.5rem;
        }

        .container {
            max-width: 900px;
            margin: 0 auto;
            padding-top: 2rem;
        }

        /* Header Styles */
        header {
            text-align: center;
            margin-bottom: 3rem;
        }

        .logo-box {
            width: 56px;
            height: 56px;
            background: var(--dark);
            border-radius: 1rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            box-shadow: 0 10px 25px rgba(15, 23, 42, 0.2);
            text-decoration: none;
        }

        #centrigon-span {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 8px 8px 16px 8px;
        }

        h1 {
            font-size: 2.5rem;
            font-weight: 800;
            letter-spacing: -0.05em;
            margin-bottom: 0.5rem;
            color: var(--dark);
        }

        .subtitle {
            color: var(--slate-500);
            font-size: 1.1rem;
            max-width: 500px;
            margin: 0 auto;
        }

        /* Dashboard/Card Styles */
        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.5);
            border-radius: var(--radius-xl);
            padding: 2.5rem;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.05);
            margin-bottom: 3rem;
        }

        /* Search Section */
        .search-group {
            position: relative;
            margin-bottom: 2rem;
        }

        .label-overlay {
            position: absolute;
            top: -10px;
            left: 20px;
            background: white;
            padding: 0 8px;
            font-size: 0.65rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--slate-500);
            z-index: 10;
        }

        .input-wrapper {
            display: flex;
            gap: 10px;
            background: white;
            padding: 6px;
            border: 2px solid var(--slate-200);
            border-radius: var(--radius-lg);
            transition: border-color 0.2s;
        }

        .input-wrapper:focus-within {
            border-color: var(--primary);
        }

        input {
            flex: 1;
            border: none;
            padding: 12px 16px;
            font-size: 1.1rem;
            font-weight: 500;
            outline: none;
            width: 100%;
        }

        .btn-primary {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 32px;
            border-radius: 12px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
            min-height: 54px;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-1px);
        }

        /* Tabs */
        .tabs-scroll {
            display: flex;
            gap: 8px;
            overflow-x: auto;
            padding-bottom: 8px;
            scrollbar-width: none;
        }

        .tabs-scroll::-webkit-scrollbar { display: none; }

        .tab {
            background: white;
            border: 1px solid var(--slate-200);
            padding: 8px 20px;
            border-radius: 10px;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            white-space: nowrap;
            transition: all 0.2s;
        }

        .tab.active {
            background: var(--dark);
            color: white;
            border-color: var(--dark);
        }

        /* Results Area */
        #resultsArea {
            margin-top: 2.5rem;
            border-top: 1px solid var(--slate-200);
            padding-top: 2rem;
            display: none;
        }

        .result-item {
            background: rgba(255, 255, 255, 0.5);
            border: 1px solid var(--slate-200);
            border-radius: 1rem;
            padding: 1.25rem;
            margin-bottom: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1.5rem;
            animation: fadeIn 0.4s ease-out;
        }

        .badge {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.6rem;
            padding: 2px 6px;
            border-radius: 4px;
            font-weight: 700;
            text-transform: uppercase;
        }

        .badge-type { background: #dbeafe; color: #1e40af; }

        .result-data {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.95rem;
            word-break: break-all;
        }

        /* SEO Content Grid */
        .seo-section {
            padding: 2rem 0;
            border-top: 1px solid var(--slate-200);
        }

        .seo-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }

        .seo-block h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--dark);
        }

        .seo-block p {
            font-size: 0.9rem;
            color: var(--slate-500);
            margin-bottom: 1rem;
        }

        .seo-block ul {
            list-style: none;
            font-size: 0.9rem;
            color: var(--slate-500);
        }

        .seo-block li {
            margin-bottom: 0.5rem;
            padding-left: 1.25rem;
            position: relative;
        }

        .seo-block li::before {
            content: "→";
            position: absolute;
            left: 0;
            color: var(--primary);
        }

        /* Tool Directory Section */
        .tool-directory {
            margin-top: 2rem;
            padding: 4rem 0;
            border-top: 2px solid var(--slate-200);
        }

        .directory-header {
            margin-bottom: 3rem;
            text-align: center;
        }

        .directory-header h2 {
            font-size: 1.75rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 0.5rem;
        }

        .directory-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 2.5rem;
        }

        .category-block h4 {
            font-size: 0.75rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--slate-400);
            margin-bottom: 1.25rem;
            border-bottom: 1px solid var(--slate-200);
            padding-bottom: 0.5rem;
        }

        .tool-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }

        .tool-links a {
            text-decoration: none;
            color: var(--slate-600);
            font-size: 0.85rem;
            font-weight: 500;
            transition: all 0.2s;
        }

        .tool-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

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

        /* Responsive */
        @media (max-width: 768px) {
            .seo-grid { grid-template-columns: 1fr; }
            .directory-grid { grid-template-columns: 1fr 1fr; }
            h1 { font-size: 2rem; }
        }

        @media (max-width: 480px) {
            .directory-grid { grid-template-columns: 1fr; }
            .btn-primary { width: 100%; justify-content: center; }
            .input-wrapper { flex-direction: column; }
            .glass-card { padding: 1.5rem; }
        }

        .tabs-label {
    font-size: 0.65rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--slate-500);
    display: block;
    margin-bottom: 0.75rem;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.results-title {
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--slate-500);
}

.loader {
    display: none;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--primary);
}

.copy-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--slate-400);
    font-size: 0.7rem;
    font-weight: 700;
}

.copy-btn.success {
    color: #10b981;
}

.footer {
    text-align: center;
    padding: 2rem;
    color: var(--slate-400);
    font-size: 0.8rem;
}

.result-content {
    flex: 1;
}

.result-meta {
    margin-bottom: 4px;
}

.badge-muted {
    color: var(--slate-400);
}

.empty-state {
    color: var(--slate-500);
    text-align: center;
    padding: 2rem;
}

.error-state {
    color: #ef4444;
    text-align: center;
    padding: 2rem;
}