/* ─── Beatrice Docs Stylesheet ─── */

:root {
    --bg-primary: #0d0d0d;
    --bg-secondary: #1a1a1a;
    --bg-card: #1e1e1e;
    --bg-card-hover: #252525;
    --border: #2a2a2a;
    --border-accent: #5b8af5;
    --text-primary: #f0f0f5;
    --text-secondary: #9a9aae;
    --text-tertiary: #6b6b80;
    --accent: #5b8af5;
    --accent-glow: rgba(91, 138, 245, 0.15);
    --success: #34c759;
    --warning: #ff9f0a;
    --radius: 12px;
    --radius-lg: 16px;
    --max-width: 860px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', system-ui, sans-serif;
    background: linear-gradient(180deg, var(--bg-primary) 0%, #0a0a0a 100%);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 16px;
    min-height: 100vh;
}

/* ─── Layout ─── */

.page-wrapper {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ─── Navigation ─── */

.top-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(13, 13, 13, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
}

.top-nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    height: 56px;
    gap: 32px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 17px;
    white-space: nowrap;
}

.nav-brand .icon {
    font-size: 20px;
}

.nav-links {
    display: flex;
    gap: 4px;
    overflow-x: auto;
    scrollbar-width: none;
}

.nav-links::-webkit-scrollbar { display: none; }

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: 8px;
    white-space: nowrap;
    transition: color 0.15s, background 0.15s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
    background: var(--bg-card);
}

.nav-product-link {
    color: var(--accent) !important;
    font-weight: 600 !important;
    border: 1px solid rgba(91, 138, 245, 0.2);
    border-radius: 6px;
    padding: 4px 10px !important;
    margin-right: 4px;
}

.nav-product-link:hover {
    background: rgba(91, 138, 245, 0.08) !important;
    border-color: rgba(91, 138, 245, 0.4);
}

/* ─── Page Hero ─── */

.page-hero {
    text-align: center;
    padding: 48px 0 32px;
}

.page-hero-icon {
    font-size: 48px;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    margin: 0 auto 20px;
    border: 1px solid var(--border);
}

.page-hero h1 {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
}

.page-hero .subtitle {
    font-size: 16px;
    color: var(--text-secondary);
}

/* ─── Hero ─── */

.hero {
    text-align: center;
    padding: 80px 0 48px;
}

.hero-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.hero h1 {
    font-size: 36px;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .subtitle {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 520px;
    margin: 0 auto;
}

/* ─── Cards ─── */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
    margin: 32px 0;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.2s, background 0.2s, transform 0.2s;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-accent);
    transform: translateY(-2px);
}

.card .card-icon {
    font-size: 28px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-glow);
    border-radius: 12px;
}

.card h3 {
    font-size: 16px;
    font-weight: 700;
}

.card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ─── Content ─── */

.content-section {
    padding: 48px 0;
}

.content-section + .content-section {
    border-top: 1px solid var(--border);
}

h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.3px;
}

h2 .section-icon {
    margin-right: 8px;
}

.section-intro {
    color: var(--text-secondary);
    font-size: 15px;
    margin-bottom: 24px;
    max-width: 640px;
}

h3 {
    font-size: 18px;
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 8px;
}

p {
    margin-bottom: 12px;
    color: var(--text-secondary);
}

p a, .content-section a {
    color: var(--accent);
    text-decoration: none;
}

p a:hover, .content-section a:hover {
    text-decoration: underline;
}

/* ─── Steps ─── */

.steps {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin: 24px 0;
}

.step {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-glow);
    color: var(--accent);
    font-weight: 700;
    font-size: 14px;
    border-radius: 50%;
    border: 1px solid rgba(91, 138, 245, 0.3);
}

.step-content h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.step-content p {
    font-size: 14px;
    margin-bottom: 0;
}

/* ─── Callouts ─── */

.callout {
    background: var(--accent-glow);
    border: 1px solid rgba(91, 138, 245, 0.2);
    border-radius: var(--radius);
    padding: 16px 20px;
    margin: 20px 0;
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.callout-icon {
    font-size: 18px;
    flex-shrink: 0;
    margin-top: 1px;
}

.callout p {
    margin-bottom: 0;
    font-size: 14px;
}

.callout.callout-warning {
    background: rgba(255, 159, 10, 0.08);
    border-color: rgba(255, 159, 10, 0.2);
}

.callout.callout-success {
    background: rgba(52, 199, 89, 0.08);
    border-color: rgba(52, 199, 89, 0.2);
}

/* ─── Code ─── */

code {
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    background: var(--bg-card);
    padding: 2px 7px;
    border-radius: 5px;
    font-size: 13px;
    border: 1px solid var(--border);
}

/* ─── Keyboard Shortcuts Table ─── */

.shortcut-table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
}

.shortcut-table th,
.shortcut-table td {
    text-align: left;
    padding: 10px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

.shortcut-table th {
    color: var(--text-tertiary);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.shortcut-table td:first-child {
    color: var(--text-primary);
    font-weight: 500;
}

.shortcut-table td:last-child {
    color: var(--text-secondary);
}

kbd {
    display: inline-block;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 5px;
    padding: 2px 8px;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 12px;
    color: var(--text-primary);
    min-width: 24px;
    text-align: center;
    box-shadow: 0 1px 0 var(--border);
}

/* ─── List ─── */

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin: 16px 0;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    color: var(--text-secondary);
}

.feature-list li::before {
    content: '';
    flex-shrink: 0;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    margin-top: 8px;
}

/* ─── Principle Grid ─── */

.principle-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 24px;
}

.principle-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    transition: all 0.2s ease;
}

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

.principle-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.principle-card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.principle-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ─── Footer ─── */

.docs-footer {
    border-top: 1px solid var(--border);
    padding: 32px 0;
    margin-top: 48px;
    text-align: center;
    color: var(--text-tertiary);
    font-size: 13px;
}

/* ─── Responsive ─── */

@media (max-width: 640px) {
    .hero h1 { font-size: 28px; }
    .hero { padding: 48px 0 32px; }
    .card-grid { grid-template-columns: 1fr; }
    .principle-grid { grid-template-columns: 1fr; }
    .top-nav-inner { gap: 16px; }
    .nav-links a { font-size: 13px; padding: 6px 8px; }
}