:root {
    --bg: #0b1120;
    --bg-card: #111827;
    --bg-elevated: #1a2332;
    --bg-input: #0b1120;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --primary-glow: rgba(59,130,246,.25);
    --border: #1e293b;
    --border-light: #334155;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --radius: 12px;
    --radius-sm: 8px;
}

[data-theme="light"] {
    --bg: #f8fafc;
    --bg-card: #ffffff;
    --bg-elevated: #f1f5f9;
    --bg-input: #ffffff;
    --text: #0f172a;
    --text-muted: #64748b;
    --text-dim: #94a3b8;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-glow: rgba(37,99,235,.2);
    --border: #e2e8f0;
    --border-light: #cbd5e1;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #d97706;
}

[data-theme="light"] .hero h1 {
    background: linear-gradient(135deg, #0f172a 0%, #3b82f6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

[data-theme="light"] .navbar {
    background: rgba(248,250,252,.9);
}

[data-theme="light"] .feature-icon {
    background: rgba(37,99,235,.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(11,17,32,.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    text-decoration: none;
    font-size: 20px;
    font-weight: 700;
}
.nav-logo svg { color: var(--primary); }
.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}
.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color .2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-btn {
    padding: 8px 18px;
    background: var(--primary);
    color: #fff !important;
    border-radius: var(--radius-sm);
    transition: background .2s, box-shadow .2s;
}
.nav-btn:hover {
    background: var(--primary-hover);
    box-shadow: 0 0 12px var(--primary-glow);
}

/* Hero */
.hero {
    position: relative;
    padding: 160px 24px 100px;
    text-align: center;
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(59,130,246,.12) 0%, transparent 60%);
    pointer-events: none;
}
.hero-inner {
    position: relative;
    max-width: 640px;
    margin: 0 auto;
}
.hero h1 {
    font-size: 48px;
    font-weight: 800;
    letter-spacing: -1.5px;
    line-height: 1.15;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #fff 0%, #93c5fd 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero p {
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 32px;
}
.hero-btns {
    display: flex;
    gap: 12px;
    justify-content: center;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all .2s;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: 0 0 20px var(--primary-glow);
}
.btn-outline {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border-light);
}
.btn-outline:hover { background: var(--bg-elevated); }
.btn-danger {
    background: rgba(239,68,68,.12);
    color: var(--danger);
    border: 1px solid rgba(239,68,68,.25);
}
.btn-danger:hover { background: rgba(239,68,68,.2); }
.btn-sm { padding: 8px 16px; font-size: 13px; }

/* Stats */
.stats { padding: 40px 0 60px; }
.stat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    text-align: center;
}
.stat-num {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -1px;
}
.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Features */
.features { padding: 60px 0; }
.section-title {
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 40px;
}
.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: border-color .2s, transform .2s;
}
.feature-card:hover {
    border-color: var(--border-light);
    transform: translateY(-2px);
}
.feature-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: rgba(59,130,246,.1);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}
.feature-card h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 8px;
}
.feature-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border);
    padding: 32px 0;
    text-align: center;
    color: var(--text-dim);
    font-size: 13px;
}

/* Auth Pages */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}
.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px;
}
.auth-card h2 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 4px;
}
.auth-card .subtitle {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 24px;
}
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-muted);
}
.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"],
.form-group select {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 14px;
    outline: none;
    transition: border .2s;
}
.form-group input:focus { border-color: var(--primary); }
.form-hint {
    font-size: 12px;
    color: var(--text-dim);
    margin-top: 4px;
}
.form-error {
    font-size: 13px;
    color: var(--danger);
    margin-bottom: 12px;
    padding: 10px 12px;
    background: rgba(239,68,68,.08);
    border-radius: var(--radius-sm);
}
.auth-footer {
    margin-top: 20px;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}
.auth-footer a { color: var(--primary); text-decoration: none; }

/* Dashboard */
.dashboard {
    padding-top: 88px;
    padding-bottom: 48px;
}
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}
.page-header h2 { font-size: 22px; font-weight: 700; }

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 20px;
}
.card h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Table */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
.data-table th {
    text-align: left;
    padding: 12px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: .5px;
    border-bottom: 1px solid var(--border);
}
.data-table td {
    padding: 14px 12px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table .mono {
    font-family: "SF Mono", "Fira Code", Consolas, monospace;
    font-size: 12px;
    color: var(--text-muted);
}
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
}
.badge-green { background: rgba(34,197,94,.12); color: var(--success); }
.badge-red { background: rgba(239,68,68,.12); color: var(--danger); }

/* Key reveal */
.key-reveal {
    background: rgba(59,130,246,.08);
    border: 1px solid var(--primary);
    border-radius: var(--radius-sm);
    padding: 16px;
    margin: 12px 0;
}
.key-reveal .key-value {
    font-family: "SF Mono", "Fira Code", Consolas, monospace;
    font-size: 13px;
    color: var(--primary);
    word-break: break-all;
    margin-bottom: 8px;
}
.key-reveal .key-note {
    font-size: 12px;
    color: var(--danger);
}

/* Theme toggle */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: 1px solid var(--border-light);
    color: var(--text-muted);
    cursor: pointer;
    transition: all .2s;
}
.theme-toggle:hover {
    background: var(--bg-elevated);
    color: var(--text);
}

/* Admin */
.admin-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
}
.admin-tabs a {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    transition: all .2s;
}
.admin-tabs a:hover,
.admin-tabs a.active {
    background: var(--bg-elevated);
    color: var(--text);
}
.admin-action {
    display: inline-block;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    text-decoration: none;
    margin-right: 6px;
    background: var(--bg-elevated);
    color: var(--text-muted);
    border: 1px solid var(--border);
    transition: all .2s;
}
.admin-action:hover { background: var(--bg); }
.admin-approve { color: var(--success); border-color: rgba(34,197,94,.3); }
.admin-approve:hover { background: rgba(34,197,94,.08); }
.admin-reject { color: var(--danger); border-color: rgba(239,68,68,.3); }
.admin-reject:hover { background: rgba(239,68,68,.08); }
.badge-yellow { background: rgba(245,158,11,.12); color: var(--warning); }
.badge-blue { background: rgba(59,130,246,.12); color: var(--primary); }

/* Docs */
.docs-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 32px;
    padding-top: 88px;
    padding-bottom: 48px;
}
.docs-nav {
    position: sticky;
    top: 88px;
    height: fit-content;
}
.docs-nav a {
    display: block;
    padding: 8px 12px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    border-radius: var(--radius-sm);
    transition: all .2s;
}
.docs-nav a:hover, .docs-nav a.active {
    color: var(--text);
    background: var(--bg-card);
}
.docs-content {
    max-width: 720px;
}
.docs-content h2 {
    font-size: 20px;
    font-weight: 700;
    margin: 32px 0 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}
.docs-content h3 {
    font-size: 16px;
    font-weight: 600;
    margin: 20px 0 8px;
}
.docs-content p {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 12px;
}
.docs-content pre {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
    overflow-x: auto;
    font-size: 13px;
    line-height: 1.6;
    margin: 12px 0;
}
.docs-content code {
    font-family: "SF Mono", "Fira Code", Consolas, monospace;
    color: #93c5fd;
}
.docs-content ul {
    margin: 8px 0 16px 20px;
    font-size: 14px;
    color: var(--text-muted);
}
.docs-content ul li { margin-bottom: 6px; }

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 32px; }
    .stat-grid { grid-template-columns: 1fr; }
    .feature-grid { grid-template-columns: 1fr; }
    .nav-links { gap: 16px; }
    .nav-links a:not(.nav-btn) { display: none; }
    .docs-layout { grid-template-columns: 1fr; }
    .docs-nav { position: static; margin-bottom: 16px; }
}