* { margin: 0; padding: 0; box-sizing: border-box; }
        :root {
            --bg-dark: #0a0a14;
            --bg-sidebar: #12121f;
            --bg-card: #1a1a2e;
            --bg-input: #16213e;
            --border: #2a2a4a;
            --primary: #6366f1;
            --primary-light: #818cf8;
            --accent: #8b5cf6;
            --success: #22c55e;
            --warning: #f59e0b;
            --danger: #ef4444;
            --text: #e0e0e0;
            --text-muted: #888;
            --text-dim: #555;
        }
        body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg-dark); color: var(--text); min-height: 100vh; }

        /* Layout */
        .layout { display: flex; min-height: 100vh; }

        /* Sidebar */
        .sidebar { width: 260px; background: var(--bg-sidebar); border-right: 1px solid var(--border); display: flex; flex-direction: column; position: fixed; height: 100vh; overflow-y: auto; }
        .sidebar-logo { padding: 24px 20px; border-bottom: 1px solid var(--border); }
        .sidebar-logo h1 { font-size: 20px; font-weight: 700; color: #fff; display: flex; align-items: center; gap: 8px; }
        .sidebar-logo .plan { font-size: 11px; background: var(--primary); padding: 3px 8px; border-radius: 4px; margin-left: auto; }
        .sidebar-user { padding: 16px 20px; border-bottom: 1px solid var(--border); }
        .sidebar-user .email { font-size: 13px; color: var(--text-muted); word-break: break-all; }
        .sidebar-nav { flex: 1; padding: 16px 0; }
        .sidebar-section { padding: 8px 20px; font-size: 10px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 1px; margin-top: 16px; }
        .sidebar-section:first-child { margin-top: 0; }
        .sidebar-nav a { display: flex; align-items: center; gap: 12px; padding: 12px 20px; color: var(--text-muted); text-decoration: none; font-size: 14px; transition: all 0.2s; cursor: pointer; }
        .sidebar-nav a:hover { background: rgba(99,102,241,0.1); color: var(--text); }
        .sidebar-nav a.active { background: var(--primary); color: #fff; }
        .sidebar-nav .nav-icon { font-size: 18px; }
        .sidebar-footer { padding: 16px 20px; border-top: 1px solid var(--border); }
        .sidebar-footer .logout { color: var(--danger); font-size: 13px; cursor: pointer; }

        /* Main */
        .main { flex: 1; margin-left: 260px; padding: 32px; }
        .panel { display: none; }
        .panel.active { display: block; }
        .page-header { margin-bottom: 32px; }
        .page-header h2 { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
        .page-header p { color: var(--text-muted); font-size: 15px; }

        /* Cards */
        .card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 28px; margin-bottom: 24px; }
        .card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
        .card-header h3 { font-size: 18px; font-weight: 600; }

        /* Grid */
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 32px; }
        .stat-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 24px; text-align: center; }
        .stat-card .value { font-size: 40px; font-weight: 700; background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .stat-card .label { font-size: 13px; color: var(--text-muted); margin-top: 8px; }
        .stat-card .sub { font-size: 11px; color: var(--text-dim); margin-top: 4px; }

        /* Forms */
        .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
        .form-group { margin-bottom: 20px; }
        .form-group label { display: block; font-size: 13px; color: var(--text-muted); margin-bottom: 8px; }
        .form-group label .required { color: var(--danger); }
        .form-group input, .form-group select, .form-group textarea { width: 100%; padding: 14px 16px; background: var(--bg-input); border: 1px solid var(--border); border-radius: 10px; color: var(--text); font-size: 15px; transition: all 0.2s; }
        .form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99,102,241,0.1); }
        .form-group textarea { min-height: 100px; resize: vertical; }
        .form-group .hint { font-size: 12px; color: var(--text-dim); margin-top: 6px; }

        /* Buttons */
        .btn { padding: 12px 24px; border-radius: 10px; border: none; cursor: pointer; font-size: 15px; font-weight: 500; transition: all 0.2s; display: inline-flex; align-items: center; gap: 8px; }
        .btn-primary { background: var(--primary); color: #fff; }
        .btn-primary:hover { background: var(--primary-light); transform: translateY(-1px); }
        .btn-success { background: var(--success); color: #fff; }
        .btn-warning { background: var(--warning); color: #000; }
        .btn-danger { background: var(--danger); color: #fff; }
        .btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text-muted); }
        .btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
        .btn-lg { padding: 16px 32px; font-size: 16px; }
        .btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
        .btn-group { display: flex; gap: 12px; flex-wrap: wrap; }

        /* Progress */
        .progress-box { background: var(--bg-input); border-radius: 12px; padding: 24px; margin: 24px 0; }
        .progress-header { display: flex; justify-content: space-between; margin-bottom: 16px; }
        .progress-header .title { font-size: 15px; font-weight: 500; }
        .progress-header .percent { color: var(--primary); font-weight: 600; }
        .progress-bar { height: 8px; background: var(--border); border-radius: 4px; overflow: hidden; }
        .progress-fill { height: 100%; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 4px; transition: width 0.5s ease; }
        .progress-steps { margin-top: 20px; }
        .progress-step { display: flex; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); }
        .progress-step:last-child { border-bottom: none; }
        .progress-step .icon { width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 12px; }
        .progress-step .icon.pending { background: var(--border); color: var(--text-dim); }
        .progress-step .icon.running { background: var(--primary); color: #fff; animation: pulse 1s infinite; }
        .progress-step .icon.done { background: var(--success); color: #fff; }
        .progress-step .label { font-size: 14px; flex: 1; }
        .progress-step .time { font-size: 12px; color: var(--text-dim); }

        @keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

        /* LLM Grid */
        .llm-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
        .llm-item { background: var(--bg-input); border: 1px solid var(--border); border-radius: 10px; padding: 16px; text-align: center; transition: all 0.2s; }
        .llm-item:hover { border-color: var(--primary); }
        .llm-item .flag { font-size: 20px; margin-bottom: 8px; }
        .llm-item .name { font-size: 13px; font-weight: 500; margin-bottom: 4px; }
        .llm-item .status { font-size: 11px; padding: 4px 8px; border-radius: 4px; display: inline-block; margin-top: 6px; }
        .llm-item .status.success { background: rgba(34,197,94,0.2); color: var(--success); }
        .llm-item .status.fail { background: rgba(239,68,68,0.2); color: var(--danger); }
        .llm-item .status.pending { background: rgba(99,102,241,0.2); color: var(--primary); }
        .llm-item .status.running { background: rgba(245,158,11,0.2); color: var(--warning); }

        /* GEO Audit 2.0 */
        .audit-category-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
        .audit-category-card { background: var(--bg-input); border: 1px solid var(--border); border-radius: 10px; padding: 16px; text-align: center; transition: all 0.2s; }
        .audit-category-card.passed { border-color: var(--success); background: rgba(34, 197, 94, 0.1); }
        .audit-cat-icon { font-size: 24px; margin-bottom: 6px; }
        .audit-cat-name { font-size: 11px; font-weight: 600; color: var(--text); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 4px; }
        .audit-cat-score { font-size: 18px; font-weight: 700; color: var(--text); }
        .audit-cat-detail { font-size: 11px; color: var(--text-dim); margin-top: 2px; }
        .recommendations-list { display: flex; flex-direction: column; gap: 12px; }
        .rec-item { display: flex; gap: 12px; align-items: flex-start; padding: 12px; background: var(--bg-input); border-radius: 8px; }
        .rec-num { background: var(--primary); color: white; width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 600; flex-shrink: 0; }

        /* Radar Chart */
        .radar-container { display: flex; gap: 40px; align-items: flex-start; }
        .radar-chart { width: 280px; height: 280px; }
        .radar-legend { flex: 1; }
        .legend-item { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--border); }
        .legend-item:last-child { border-bottom: none; }
        .legend-item .dot { width: 12px; height: 12px; border-radius: 50%; }
        .legend-item .label { flex: 1; font-size: 14px; }
        .legend-item .value { font-size: 14px; font-weight: 600; }

        /* Tech SEO Items */
        .seo-list { display: grid; gap: 12px; }
        .seo-item { display: flex; align-items: center; gap: 12px; padding: 14px 16px; background: var(--bg-input); border-radius: 10px; }
        .seo-item .icon { width: 28px; height: 28px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 14px; }
        .seo-item .icon.pass { background: rgba(34,197,94,0.2); color: var(--success); }
        .seo-item .icon.warn { background: rgba(245,158,11,0.2); color: var(--warning); }
        .seo-item .icon.fail { background: rgba(239,68,68,0.2); color: var(--danger); }
        .seo-item .name { flex: 1; font-size: 14px; }
        .seo-item .desc { font-size: 12px; color: var(--text-dim); }

        /* File List */
        .file-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
        .file-item { background: var(--bg-input); border: 1px solid var(--border); border-radius: 12px; padding: 20px; display: flex; align-items: center; gap: 16px; transition: all 0.2s; }
        .file-item:hover { border-color: var(--primary); }
        .file-item .icon { width: 48px; height: 48px; background: rgba(99,102,241,0.2); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 24px; }
        .file-item .info { flex: 1; }
        .file-item .name { font-size: 15px; font-weight: 500; margin-bottom: 4px; }
        .file-item .meta { font-size: 12px; color: var(--text-dim); }
        .file-item .download { padding: 8px 16px; background: var(--primary); color: #fff; border-radius: 8px; font-size: 13px; cursor: pointer; border: none; }
        .file-item .download:hover { background: var(--primary-light); }
        .file-item .download:disabled { background: var(--border); cursor: not-allowed; }
        .file-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
        .delivery-overview { grid-column: 1 / -1; background: linear-gradient(180deg, rgba(22,33,62,.95), rgba(18,18,31,.95)); border: 1px solid var(--border); border-radius: 12px; padding: 22px; }
        .delivery-overview-head { display: flex; justify-content: space-between; gap: 18px; align-items: flex-start; margin-bottom: 18px; }
        .delivery-kicker { color: var(--text-dim); font-size: 11px; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 5px; }
        .delivery-overview h3 { font-size: 18px; margin: 0; }
        .delivery-badges { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
        .delivery-badge { display: inline-flex; align-items: center; min-height: 22px; padding: 4px 8px; border-radius: 6px; font-size: 11px; line-height: 1; border: 1px solid var(--border); color: var(--text-muted); background: rgba(255,255,255,.03); white-space: nowrap; }
        .delivery-badge.success { color: var(--success); border-color: rgba(34,197,94,.45); background: rgba(34,197,94,.12); }
        .delivery-badge.warning { color: var(--warning); border-color: rgba(245,158,11,.45); background: rgba(245,158,11,.12); }
        .delivery-badge.danger { color: var(--danger); border-color: rgba(239,68,68,.45); background: rgba(239,68,68,.12); }
        .delivery-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
        .delivery-metric { background: rgba(10,10,20,.55); border: 1px solid rgba(255,255,255,.06); border-radius: 10px; padding: 14px; min-width: 0; }
        .delivery-metric .label { display: block; color: var(--text-dim); font-size: 11px; text-transform: uppercase; letter-spacing: .6px; margin-bottom: 8px; }
        .delivery-metric .value { display: block; color: var(--text); font-size: 20px; font-weight: 700; overflow-wrap: anywhere; }
        .delivery-metric .sub { display: block; color: var(--text-muted); font-size: 12px; margin-top: 5px; overflow-wrap: anywhere; }
        .delivery-note { display: flex; gap: 10px; align-items: center; margin-top: 14px; color: var(--text-muted); font-size: 13px; }
        .enhancement-panel { margin-top: 14px; padding: 16px; border: 1px solid rgba(255,255,255,.08); border-radius: 10px; background: rgba(10,10,20,.42); }
        .enhancement-title { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; color: var(--text); font-size: 14px; font-weight: 700; }
        .enhancement-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
        .enhancement-stat { min-width: 0; padding: 12px; border-radius: 8px; border: 1px solid rgba(255,255,255,.06); background: rgba(255,255,255,.035); }
        .enhancement-stat .value { display: block; color: var(--text); font-size: 22px; line-height: 1; font-weight: 800; }
        .enhancement-stat .label { display: block; margin-top: 6px; color: var(--text-dim); font-size: 11px; text-transform: uppercase; letter-spacing: .6px; }
        .enhancement-panel p { margin: 0; color: var(--text-muted); font-size: 13px; line-height: 1.5; }
        .enhancement-fallbacks { margin-top: 12px; color: var(--text-muted); font-size: 13px; }
        .enhancement-fallbacks strong { color: var(--warning); font-weight: 700; }
        .enhancement-fallbacks ul { margin: 10px 0 0; padding: 0; list-style: none; display: grid; gap: 8px; }
        .enhancement-fallbacks li { display: grid; grid-template-columns: minmax(120px, .45fr) minmax(0, 1fr); gap: 10px; align-items: start; padding: 9px 10px; border-radius: 8px; background: rgba(245,158,11,.08); border: 1px solid rgba(245,158,11,.16); }
        .enhancement-fallbacks li span { color: var(--text); font-weight: 600; overflow-wrap: anywhere; }
        .enhancement-fallbacks li em { color: var(--text-muted); font-style: normal; line-height: 1.45; overflow-wrap: anywhere; }
        .delivery-alert { grid-column: 1 / -1; margin-top: 14px; padding: 14px 16px; border-radius: 10px; font-size: 13px; }
        .delivery-alert ul { margin: 8px 0 0 18px; color: var(--text-muted); line-height: 1.5; }
        .delivery-alert.warning { background: rgba(245,158,11,.1); border: 1px solid rgba(245,158,11,.35); color: var(--warning); }
        .delivery-alert.danger { background: rgba(239,68,68,.1); border: 1px solid rgba(239,68,68,.35); color: var(--danger); }

        /* Toast */
        .toast { position: fixed; bottom: 24px; right: 24px; padding: 14px 24px; border-radius: 10px; font-size: 14px; opacity: 0; transform: translateY(20px); transition: all 0.3s; z-index: 1000; }
        .toast.show { opacity: 1; transform: translateY(0); }
        .toast.success { background: var(--success); color: #fff; }
        .toast.error { background: var(--danger); color: #fff; }
        .toast.info { background: var(--primary); color: #fff; }

        /* Auth Overlay */
        .auth-overlay { position: fixed; inset: 0; background: var(--bg-dark); display: flex; align-items: center; justify-content: center; z-index: 9999; }
        .auth-overlay.hidden { display: none; }
        .auth-box { background: var(--bg-card); border: 1px solid var(--border); border-radius: 20px; padding: 40px; width: 400px; text-align: center; }
        .auth-box h2 { font-size: 24px; margin-bottom: 8px; }
        .auth-box p { color: var(--text-muted); margin-bottom: 24px; }
        .auth-box .btn { width: 100%; justify-content: center; }

        /* Diagnosis History */
        .history-list { display: grid; gap: 16px; }
        .history-item { background: var(--bg-input); border: 1px solid var(--border); border-radius: 12px; padding: 20px; display: flex; align-items: center; gap: 16px; cursor: pointer; transition: all 0.2s; }
        .history-item:hover { border-color: var(--primary); }
        .history-item .brand { font-size: 16px; font-weight: 600; flex: 1; }
        .history-item .date { font-size: 12px; color: var(--text-dim); }
        .history-item .score { font-size: 24px; font-weight: 700; }
        .history-item .score.good { color: var(--success); }
        .history-item .score.medium { color: var(--warning); }
        .history-item .score.bad { color: var(--danger); }

        /* Empty State */
        .empty-state { text-align: center; padding: 60px 20px; color: var(--text-dim); }
        .empty-state .icon { font-size: 48px; margin-bottom: 16px; }
        .empty-state h3 { font-size: 18px; color: var(--text-muted); margin-bottom: 8px; }
        .empty-state p { font-size: 14px; }

        /* LLM Detail */
        .llm-detail {
            font-size: 10px;
            color: var(--text-muted);
            margin-top: 6px;
            padding: 4px 6px;
            background: var(--bg-input);
            border-radius: 4px;
            max-height: 48px;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            line-height: 1.4;
            cursor: default;
        }
        .llm-detail.error {
            color: var(--accent-danger);
            background: rgba(239, 68, 68, 0.1);
        }
        .llm-item {
            min-height: 60px;
        }
        .llm-item .status.success {
            background: rgba(34, 197, 94, 0.2);
            border: 1px solid var(--accent-success);
        }
        .llm-item .status.fail {
            background: rgba(239, 68, 68, 0.1);
            border: 1px solid var(--accent-danger);
        }
        .llm-item .status.warn {
            background: rgba(251, 191, 36, 0.1);
            border: 1px solid var(--accent-warning);
        }

        /* LLM Details List */
        .llm-details-list {
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }
        .llm-detail-row {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px;
            background: var(--bg-input);
            border-radius: 8px;
            margin-bottom: 8px;
            cursor: pointer;
            transition: all 0.2s;
        }
        .llm-detail-row:hover {
            border-color: var(--primary);
            background: rgba(99, 102, 241, 0.1);
        }
        .llm-detail-row .llm-flag {
            font-size: 20px;
            width: 32px;
            text-align: center;
        }
        .llm-detail-row .llm-name {
            font-weight: 600;
            font-size: 14px;
            min-width: 80px;
        }
        .llm-detail-row .llm-status {
            font-size: 12px;
            padding: 2px 8px;
            border-radius: 4px;
            min-width: 70px;
            text-align: center;
        }
        .llm-detail-row .llm-status.success { background: rgba(34,197,94,0.2); color: var(--success); }
        .llm-detail-row .llm-status.fail { background: rgba(239,68,68,0.2); color: var(--danger); }
        .llm-detail-row .llm-status.warn { background: rgba(245,158,11,0.2); color: var(--warning); }
        .llm-detail-row .llm-status.pending { background: rgba(99,102,241,0.2); color: var(--primary); }
        .llm-detail-row .llm-snippet {
            flex: 1;
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }
        .llm-detail-row .llm-snippet.success { color: var(--text); }
        .llm-detail-row .llm-snippet.error { color: var(--danger); font-size: 12px; }

        /* Score Formula */
        .score-formula {
            padding: 16px;
        }
        .formula-item {
            margin-bottom: 16px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border);
        }
        .formula-item:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }
        .formula-item h4 {
            color: var(--accent);
            font-size: 14px;
            margin-bottom: 4px;
            font-family: monospace;
        }
        .formula-desc {
            font-size: 12px;
            color: var(--text-dim);
        }

        /* Suggestions */
        .suggestions-list {
            padding: 0 16px 16px;
        }
        .suggestion-item {
            display: flex;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }
        .suggestion-item:last-child {
            border-bottom: none;
        }
        .suggestion-num {
            width: 24px;
            height: 24px;
            background: var(--accent);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 600;
            flex-shrink: 0;
        }
        .suggestion-text {
            font-size: 14px;
            line-height: 1.5;
            color: var(--text);
        }

        /* GEO Details */
        .geo-details, .content-details {
            padding: 16px;
        }
        .detail-row {
            display: flex;
            justify-content: space-between;
            padding: 8px 0;
            border-bottom: 1px solid var(--border);
        }
        .detail-row:last-child {
            border-bottom: none;
        }
        .detail-label {
            color: var(--text-dim);
            font-size: 13px;
        }
        .detail-value {
            font-weight: 600;
            font-size: 13px;
        }

        /* Plan Selection */
        .plan-card {
            flex: 1;
            background: var(--bg-input);
            border: 2px solid var(--border);
            border-radius: 12px;
            padding: 16px;
            cursor: pointer;
            transition: all 0.2s;
            user-select: none;
        }
        .plan-card.selected {
            border-color: var(--primary) !important;
            background: rgba(99,102,241,0.15) !important;
        }
        .plan-card:hover:not(.selected) {
            border-color: var(--primary-light);
        }

        @media (max-width: 900px) {
            .file-list, .delivery-metrics { grid-template-columns: 1fr; }
            .enhancement-grid { grid-template-columns: 1fr; }
            .enhancement-fallbacks li { grid-template-columns: 1fr; gap: 4px; }
            .delivery-overview-head { flex-direction: column; }
            .delivery-badges { justify-content: flex-start; }
            .delivery-note { align-items: flex-start; flex-direction: column; }
        }