:root {
    --bg: #0a0a0f;
    --bg-card: #111118;
    --bg-hover: #1a1a24;
    --fg: #e0e0e0;
    --fg-dim: #888;
    --accent: #7c3aed;
    --accent2: #06b6d4;
    --accent3: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --border: #222;
    --border-light: #333;
    --radius: 8px;
    --max-width: 900px;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
    background: var(--bg);
    color: var(--fg);
    line-height: 1.7;
    font-size: 15px;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.site-header {
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    background: rgba(10,10,15,0.95);
    backdrop-filter: blur(10px);
    z-index: 100;
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.logo span { color: var(--accent2); }

.nav-links {
    display: flex;
    gap: 1.2rem;
    flex-wrap: wrap;
}

.nav-links a {
    color: var(--fg-dim);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover { color: var(--fg); }

/* Hero */
.hero {
    text-align: center;
    padding: 4rem 1.5rem 3rem;
    border-bottom: 1px solid var(--border);
}

.hero-emoji { font-size: 4rem; margin-bottom: 1rem; display: block; }

.hero h1 {
    font-size: 2.4rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 0.8rem;
}

.hero-subtitle {
    color: var(--fg-dim);
    font-size: 1.15rem;
    max-width: 600px;
    margin: 0 auto;
}

.hero-meta {
    margin-top: 1.5rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.8rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge-green { background: #1a3a1a; color: #4ade80; }
.badge-blue { background: #0a2a3a; color: #06b6d4; }
.badge-purple { background: #1a0a3a; color: #a78bfa; }

/* Page header */
.page-header {
    padding: 3rem 1.5rem 2rem;
    border-bottom: 1px solid var(--border);
    text-align: center;
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.page-header p {
    color: var(--fg-dim);
    font-size: 1.05rem;
}

/* Content */
.content {
    padding: 2rem 0;
}

.content h2 {
    color: var(--accent);
    font-size: 1.3rem;
    font-weight: 700;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.content h3 {
    color: var(--accent2);
    font-size: 1.1rem;
    font-weight: 600;
    margin-top: 1.8rem;
    margin-bottom: 0.7rem;
}

.content p { margin-bottom: 1rem; }

.content ul, .content ol {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.content li { margin-bottom: 0.4rem; }

.content a { color: var(--accent2); text-decoration: none; }
.content a:hover { text-decoration: underline; }

.content code {
    background: var(--bg-card);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
    font-size: 0.88em;
    color: var(--accent2);
}

.content pre {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem 1.2rem;
    overflow-x: auto;
    margin: 1rem 0;
}

.content pre code {
    background: none;
    padding: 0;
    color: var(--fg);
    font-size: 0.85rem;
    line-height: 1.6;
}

/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.2rem;
    transition: border-color 0.2s, background 0.2s;
}

.card:hover {
    border-color: var(--border-light);
    background: var(--bg-hover);
}

.card h3 {
    margin-top: 0;
    color: var(--accent);
    font-size: 1.1rem;
}

.card p, .card li {
    color: var(--fg-dim);
    font-size: 0.95rem;
    margin-top: 0.5rem;
}

.card .card-meta {
    font-size: 0.8rem;
    color: var(--fg-dim);
    margin-top: 0.8rem;
    padding-top: 0.8rem;
    border-top: 1px solid var(--border);
}

/* Spec cards */
.spec-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.spec-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem 1.2rem;
}

.spec-card .label {
    color: var(--fg-dim);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.spec-card .value {
    font-size: 1.05rem;
    font-weight: 700;
    margin-top: 0.2rem;
}

/* Status indicators */
.status-ok { color: var(--accent3); }
.status-warn { color: var(--warning); }
.status-err { color: var(--danger); }

/* Tip / Warning boxes */
.tip, .warning, .danger {
    border-radius: var(--radius);
    padding: 1rem 1.2rem;
    margin: 1rem 0;
    border-left: 4px solid;
}

.tip {
    background: #0a1a2a;
    border-color: var(--accent2);
}

.warning {
    background: #1a1a0a;
    border-color: var(--warning);
}

.danger {
    background: #1a0a0a;
    border-color: var(--danger);
}

.tip strong, .warning strong, .danger strong {
    display: block;
    margin-bottom: 0.3rem;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    font-size: 0.9rem;
}

th, td {
    padding: 0.6rem 0.8rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

tr:hover td { background: var(--bg-hover); }

/* TOC */
.toc {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
}

.toc h4 {
    color: var(--accent);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.8rem;
}

.toc ul { list-style: none; margin-left: 0; }
.toc li { margin-bottom: 0.3rem; }
.toc a { color: var(--fg-dim); font-size: 0.9rem; }
.toc a:hover { color: var(--fg); }

/* Footer */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 2rem 1.5rem;
    text-align: center;
    color: var(--fg-dim);
    font-size: 0.85rem;
    margin-top: 3rem;
}

.site-footer a { color: var(--accent2); }

/* Responsive */
@media (max-width: 600px) {
    .site-header .container { flex-direction: column; align-items: flex-start; }
    .nav-links { gap: 0.8rem; }
    .hero h1 { font-size: 1.8rem; }
    .page-header h1 { font-size: 1.6rem; }
    .card-grid, .spec-grid { grid-template-columns: 1fr; }
}

/* Print */
@media print {
    .site-header, .site-footer, .toc { display: none; }
    body { background: white; color: black; }
}