/* ============================================
   HumanRail Docs — Shared Styles
   ============================================ */

:root {
    --bg: #09090b;
    --bg-elevated: #111113;
    --bg-card: #18181b;
    --bg-card-hover: #1e1e22;
    --border: #27272a;
    --border-light: #3f3f46;
    --text: #fafafa;
    --text-muted: #a1a1aa;
    --text-dim: #71717a;
    --primary: #6366f1;
    --primary-hover: #818cf8;
    --primary-glow: rgba(99, 102, 241, 0.15);
    --purple: #a855f7;
    --blue: #3b82f6;
    --green: #22c55e;
    --amber: #f59e0b;
    --rose: #f43f5e;
    --indigo: #6366f1;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --mono: 'JetBrains Mono', 'Fira Code', monospace;
    --radius: 12px;
    --radius-sm: 8px;
    --max-w: 1200px;
}

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

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

a { color: var(--primary-hover); text-decoration: none; }
a:hover { color: var(--text); }

/* ---- Top Nav ---- */
.docs-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(9, 9, 11, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.docs-nav-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.docs-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text);
    letter-spacing: -0.02em;
}

.docs-logo .badge {
    font-size: 0.65rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 4px;
    background: var(--primary-glow);
    color: var(--primary-hover);
    border: 1px solid rgba(99, 102, 241, 0.3);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.docs-nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    font-size: 0.88rem;
}

.docs-nav-links a {
    color: var(--text-muted);
    transition: color 0.2s;
}

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

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

.nav-github {
    display: flex;
    align-items: center;
    gap: 6px;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    cursor: pointer;
}

/* ---- Page Content ---- */
.docs-content {
    max-width: 860px;
    margin: 0 auto;
    padding: 100px 24px 80px;
}

.docs-content h1 {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 12px;
    line-height: 1.2;
}

.docs-content .subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 48px;
    line-height: 1.7;
}

.docs-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-top: 56px;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}

.docs-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-top: 36px;
    margin-bottom: 12px;
}

.docs-content p {
    color: var(--text-muted);
    margin-bottom: 16px;
    line-height: 1.7;
}

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

.docs-content li {
    margin-bottom: 8px;
    line-height: 1.6;
}

.docs-content strong {
    color: var(--text);
    font-weight: 600;
}

.docs-content code {
    font-family: var(--mono);
    font-size: 0.88em;
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--primary-hover);
}

/* ---- Code Blocks ---- */
.code-block {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: 24px;
}

.code-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border);
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dot.red { background: #ef4444; }
.dot.yellow { background: #eab308; }
.dot.green { background: #22c55e; }

.code-lang {
    margin-left: auto;
    font-size: 0.75rem;
    color: var(--text-dim);
    font-family: var(--mono);
}

.code-block pre {
    padding: 16px 20px;
    overflow-x: auto;
    font-size: 0.82rem;
    line-height: 1.7;
    margin: 0;
}

.code-block code {
    font-family: var(--mono);
    color: #e4e4e7;
    background: none;
    border: none;
    padding: 0;
    border-radius: 0;
}

/* Syntax highlighting - matches marketing site */
.kw { color: #c084fc; }
.fn { color: #60a5fa; }
.str { color: #4ade80; }
.num { color: #fbbf24; }
.cm { color: #52525b; }
.var { color: #f472b6; }

/* ---- SDK Tabs ---- */
.sdk-tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 4px;
    max-width: 400px;
    margin-bottom: 24px;
}

.sdk-tab {
    flex: 1;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--text-muted);
    font-family: var(--font);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.sdk-tab.active {
    background: var(--primary);
    color: white;
}

.sdk-tab:hover:not(.active) {
    color: var(--text);
}

.sdk-panel { display: none; }
.sdk-panel.active { display: block; }

/* ---- Info/Warning boxes ---- */
.callout {
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    margin-bottom: 24px;
    border: 1px solid;
}

.callout p {
    margin-bottom: 0;
    color: var(--text);
}

.callout-title {
    font-weight: 700;
    font-size: 0.88rem;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.callout.info {
    background: rgba(59, 130, 246, 0.08);
    border-color: rgba(59, 130, 246, 0.25);
}

.callout.info .callout-title { color: var(--blue); }

.callout.warning {
    background: rgba(245, 158, 11, 0.08);
    border-color: rgba(245, 158, 11, 0.25);
}

.callout.warning .callout-title { color: var(--amber); }

.callout.tip {
    background: rgba(34, 197, 94, 0.08);
    border-color: rgba(34, 197, 94, 0.25);
}

.callout.tip .callout-title { color: var(--green); }

/* ---- Steps ---- */
.step {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border);
}

.step:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.step-number {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary-glow);
    color: var(--primary-hover);
    font-weight: 700;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(99, 102, 241, 0.3);
    margin-top: 2px;
}

.step-body {
    flex: 1;
    min-width: 0;
}

.step-body h3 {
    margin-top: 0;
    margin-bottom: 12px;
    font-size: 1.15rem;
}

.step-body p {
    margin-bottom: 16px;
}

/* ---- Table ---- */
.docs-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 24px;
    font-size: 0.9rem;
}

.docs-table th {
    text-align: left;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text);
    font-weight: 600;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.docs-table td {
    padding: 12px 16px;
    border: 1px solid var(--border);
    color: var(--text-muted);
    vertical-align: top;
}

.docs-table code {
    font-size: 0.82em;
}

/* ---- Cards Grid ---- */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.doc-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: border-color 0.2s, transform 0.2s;
    display: block;
}

.doc-card:hover {
    border-color: var(--border-light);
    transform: translateY(-2px);
    color: var(--text);
}

.doc-card h3 {
    margin-top: 0;
    margin-bottom: 8px;
    font-size: 1rem;
    color: var(--text);
}

.doc-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0;
}

.doc-card .card-icon {
    font-size: 1.4rem;
    margin-bottom: 12px;
    display: block;
}

/* ---- Checklist ---- */
.checklist {
    list-style: none;
    padding-left: 0;
}

.checklist li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.checklist li::before {
    content: '';
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    border-radius: 4px;
    border: 2px solid var(--border-light);
    margin-top: 2px;
}

/* ---- Footer ---- */
.docs-footer {
    border-top: 1px solid var(--border);
    padding: 32px 24px;
    text-align: center;
    font-size: 0.82rem;
    color: var(--text-dim);
}

.docs-footer a {
    color: var(--text-muted);
}

/* ---- Mobile ---- */
@media (max-width: 768px) {
    .mobile-menu-btn { display: block; }

    .docs-nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(9, 9, 11, 0.95);
        backdrop-filter: blur(12px);
        flex-direction: column;
        padding: 16px 24px 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
    }

    .docs-nav.open .docs-nav-links { display: flex; }

    .docs-content { padding: 90px 16px 60px; }
    .docs-content h1 { font-size: 1.7rem; }

    .step { flex-direction: column; gap: 12px; }

    .sdk-tabs { max-width: 100%; }
}