@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --bg-dark: #07111d;
    --bg-card: rgba(21, 34, 45, 0.66);
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --accent-primary: #14b8a6;
    --accent-secondary: #f59e0b;
    --accent-gradient: linear-gradient(135deg, #14b8a6 0%, #38bdf8 54%, #f59e0b 100%);
    --border-glass: rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background:
        linear-gradient(135deg, rgba(20, 184, 166, 0.10), transparent 28%),
        linear-gradient(225deg, rgba(245, 158, 11, 0.06), transparent 30%),
        var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.8;
    min-height: 100vh;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: linear-gradient(to bottom, rgba(0,0,0,0.8), transparent 70%);
    z-index: -1;
}

a {
    text-decoration: none;
    color: var(--accent-primary);
    transition: color 0.2s ease;
}

a:hover { color: #5eead4; }

/* ── Nav ── */
.docs-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(7, 17, 29, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-glass);
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.docs-nav .logo-text {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.docs-nav .logo-text span { color: var(--accent-primary); }

.docs-nav-links {
    display: flex;
    gap: 24px;
    list-style: none;
}

.docs-nav-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.docs-nav-links a:hover { color: var(--text-primary); }

/* ── Page Layout ── */
.docs-page {
    max-width: 860px;
    margin: 0 auto;
    padding: 64px 24px 80px;
}

.docs-page h1 {
    font-size: 2.4rem;
    font-weight: 700;
    margin-bottom: 8px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.docs-meta {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-glass);
}

.docs-page h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 36px 0 12px;
    color: #e2e8f0;
    padding-left: 12px;
    border-left: 3px solid var(--accent-primary);
}

.docs-page p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 16px;
}

.docs-page ul, .docs-page ol {
    color: var(--text-secondary);
    padding-left: 24px;
    margin-bottom: 16px;
}

.docs-page li { margin-bottom: 8px; font-size: 1rem; }

.docs-page strong { color: #e2e8f0; }

/* Contact card */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin: 24px 0;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 20px 24px;
    backdrop-filter: blur(10px);
    transition: border-color 0.3s, transform 0.3s;
}

.contact-card:hover {
    border-color: rgba(20, 184, 166, 0.4);
    transform: translateY(-3px);
}

.contact-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 6px;
}

.contact-value {
    font-size: 1rem;
    color: #e2e8f0;
}

/* ── Footer ── */
.docs-footer {
    border-top: 1px solid var(--border-glass);
    background: rgba(0,0,0,0.2);
    padding: 32px 24px;
    text-align: center;
}

.docs-footer p {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-bottom: 10px;
}

.docs-footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.docs-footer-links a {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.docs-footer-links a:hover { color: var(--accent-primary); }

.footer-sep {
    color: rgba(255,255,255,0.2);
    font-size: 0.8rem;
}

.beian-police {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    line-height: 1;
}

.beian-police:hover { color: var(--accent-primary); }

.beian-icon {
    width: 14px;
    height: 14px;
    display: block;
    flex-shrink: 0;
    filter: brightness(0.7);
    transition: filter 0.2s;
}

.beian-police:hover .beian-icon { filter: brightness(1.1); }

@media (max-width: 600px) {
    .docs-page { padding: 40px 18px 60px; }
    .docs-page h1 { font-size: 1.8rem; }
    .docs-nav-links { display: none; }
}