/* ============================================================
   BigQuery Studio — valladares.org/bigquery-studio
   Clean white/black design matching the macOS app interface
   ============================================================ */

/* ---------- Reset & Variables ---------- */

:root {
    --bq-bg: #ffffff;
    --bq-bg-secondary: #f8f9fa;
    --bq-bg-tertiary: #f1f3f5;
    --bq-text: #1a1a1a;
    --bq-text-secondary: #6b7280;
    --bq-text-tertiary: #9ca3af;
    --bq-border: #e5e7eb;
    --bq-border-light: #f0f0f0;
    --bq-accent: #2563eb;
    --bq-accent-light: #eff6ff;
    --bq-code-bg: #f6f8fa;
    --bq-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    --bq-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --bq-radius: 8px;
    --bq-radius-lg: 12px;
    --bq-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --bq-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
    --bq-max-width: 860px;
    --bq-transition: 0.2s ease;
}

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

body.bq-page {
    font-family: var(--bq-font);
    background: var(--bq-bg);
    color: var(--bq-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ---------- Top Navigation ---------- */

.bq-topnav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--bq-border);
    padding: 0 24px;
}

.bq-topnav-inner {
    max-width: var(--bq-max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 52px;
}

.bq-topnav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--bq-text);
    font-weight: 600;
    font-size: 15px;
    letter-spacing: -0.01em;
}

.bq-topnav-brand img {
    width: 28px;
    height: 28px;
    border-radius: 6px;
}

.bq-topnav-links {
    display: flex;
    align-items: center;
    gap: 6px;
}

.bq-topnav-links a {
    color: var(--bq-text-secondary);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: 6px;
    transition: all var(--bq-transition);
}

.bq-topnav-links a:hover {
    color: var(--bq-text);
    background: var(--bq-bg-secondary);
}

.bq-topnav-links a.active {
    color: var(--bq-accent);
    background: var(--bq-accent-light);
}

.bq-back-link {
    color: var(--bq-text-secondary);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 10px;
    border-radius: 6px;
    transition: all var(--bq-transition);
}

.bq-back-link:hover {
    color: var(--bq-text);
    background: var(--bq-bg-secondary);
}

/* ---------- Hero / Landing ---------- */

.bq-hero {
    text-align: center;
    padding: 100px 24px 80px;
    max-width: 680px;
    margin: 0 auto;
}

.bq-hero-icon {
    width: 96px;
    height: 96px;
    border-radius: 22px;
    box-shadow: var(--bq-shadow-md);
    margin-bottom: 28px;
}

.bq-hero h1 {
    font-size: 40px;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 16px;
    color: var(--bq-text);
}

.bq-hero .bq-subtitle {
    font-size: 18px;
    color: var(--bq-text-secondary);
    line-height: 1.6;
    margin-bottom: 36px;
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
}

.bq-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bq-bg-tertiary);
    color: var(--bq-text-secondary);
    font-size: 13px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid var(--bq-border);
}

.bq-badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #f59e0b;
    animation: bq-pulse 2s ease-in-out infinite;
}

@keyframes bq-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ---------- Features Grid (Home) ---------- */

.bq-features {
    max-width: var(--bq-max-width);
    margin: 0 auto;
    padding: 0 24px 80px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.bq-feature-card {
    background: var(--bq-bg);
    border: 1px solid var(--bq-border);
    border-radius: var(--bq-radius-lg);
    padding: 24px;
    transition: all var(--bq-transition);
}

.bq-feature-card:hover {
    border-color: #d1d5db;
    box-shadow: var(--bq-shadow);
}

.bq-feature-icon {
    font-size: 22px;
    margin-bottom: 12px;
}

.bq-feature-card h3 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--bq-text);
}

.bq-feature-card p {
    font-size: 13px;
    color: var(--bq-text-secondary);
    line-height: 1.5;
}

/* ---------- Page Container ---------- */

.bq-container {
    max-width: var(--bq-max-width);
    margin: 0 auto;
    padding: 48px 24px 80px;
}

/* ---------- Page Header ---------- */

.bq-page-header {
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--bq-border);
}

.bq-page-header h1 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.bq-page-header .bq-page-meta {
    font-size: 13px;
    color: var(--bq-text-tertiary);
}

/* ---------- Content Typography ---------- */

.bq-content h2 {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-top: 40px;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--bq-border-light);
    color: var(--bq-text);
}

.bq-content h3 {
    font-size: 16px;
    font-weight: 600;
    margin-top: 28px;
    margin-bottom: 12px;
    color: var(--bq-text);
}

.bq-content p {
    font-size: 14px;
    color: var(--bq-text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.bq-content ul,
.bq-content ol {
    margin-bottom: 16px;
    padding-left: 24px;
}

.bq-content li {
    font-size: 14px;
    color: var(--bq-text-secondary);
    line-height: 1.7;
    margin-bottom: 6px;
}

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

.bq-content a {
    color: var(--bq-accent);
    text-decoration: none;
    font-weight: 500;
}

.bq-content a:hover {
    text-decoration: underline;
}

.bq-content code {
    font-family: var(--bq-mono);
    font-size: 12.5px;
    background: var(--bq-code-bg);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--bq-text);
}

/* ---------- Manual ---------- */

.bq-manual-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 40px;
    max-width: 1060px;
    margin: 0 auto;
    padding: 32px 24px 80px;
}

.bq-manual-sidebar {
    position: sticky;
    top: 68px;
    align-self: start;
    max-height: calc(100vh - 84px);
    overflow-y: auto;
}

.bq-manual-sidebar::-webkit-scrollbar {
    width: 4px;
}

.bq-manual-sidebar::-webkit-scrollbar-thumb {
    background: var(--bq-border);
    border-radius: 4px;
}

.bq-manual-nav-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--bq-text-tertiary);
    margin-bottom: 8px;
    padding: 0 8px;
}

.bq-manual-nav a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
    font-size: 13px;
    color: var(--bq-text-secondary);
    text-decoration: none;
    border-radius: 6px;
    transition: all var(--bq-transition);
    margin-bottom: 1px;
}

.bq-manual-nav a:hover {
    color: var(--bq-text);
    background: var(--bq-bg-secondary);
}

.bq-manual-nav a.active {
    color: var(--bq-accent);
    background: var(--bq-accent-light);
    font-weight: 500;
}

.bq-manual-nav .nav-icon {
    width: 16px;
    text-align: center;
    font-size: 12px;
    opacity: 0.6;
}

.bq-manual-content {
    min-width: 0;
}

/* Manual sections */

.bq-manual-section {
    margin-bottom: 48px;
    scroll-margin-top: 68px;
}

.bq-manual-section-title {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--bq-text);
    color: var(--bq-text);
}

.bq-manual-section h3 {
    font-size: 15px;
    font-weight: 600;
    margin-top: 24px;
    margin-bottom: 10px;
    color: var(--bq-text);
}

.bq-manual-section p {
    font-size: 14px;
    color: var(--bq-text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
}

.bq-manual-section ul,
.bq-manual-section ol {
    margin-bottom: 12px;
    padding-left: 22px;
}

.bq-manual-section li {
    font-size: 14px;
    color: var(--bq-text-secondary);
    line-height: 1.7;
    margin-bottom: 4px;
}

/* Info boxes */

.bq-tip,
.bq-warning {
    font-size: 13px;
    line-height: 1.6;
    padding: 12px 16px;
    border-radius: var(--bq-radius);
    margin: 16px 0;
}

.bq-tip {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: #166534;
}

.bq-warning {
    background: #fffbeb;
    border: 1px solid #fde68a;
    color: #92400e;
}

.bq-tip strong,
.bq-warning strong {
    font-weight: 600;
}

/* Shortcut table */

.bq-shortcut-table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    font-size: 13px;
}

.bq-shortcut-table th {
    text-align: left;
    font-weight: 600;
    color: var(--bq-text);
    padding: 8px 12px;
    border-bottom: 2px solid var(--bq-border);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.bq-shortcut-table td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--bq-border-light);
    color: var(--bq-text-secondary);
}

.bq-shortcut-table tr:last-child td {
    border-bottom: none;
}

.bq-key {
    display: inline-block;
    font-family: var(--bq-mono);
    font-size: 12px;
    background: var(--bq-bg-tertiary);
    border: 1px solid var(--bq-border);
    padding: 2px 8px;
    border-radius: 4px;
    color: var(--bq-text);
    font-weight: 500;
    white-space: nowrap;
}

/* Roles table */

.bq-roles-table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    font-size: 13px;
}

.bq-roles-table th {
    text-align: left;
    font-weight: 600;
    color: var(--bq-text);
    padding: 8px 12px;
    border-bottom: 2px solid var(--bq-border);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.bq-roles-table td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--bq-border-light);
    color: var(--bq-text-secondary);
}

.bq-roles-table code {
    font-family: var(--bq-mono);
    font-size: 12px;
    background: var(--bq-code-bg);
    padding: 2px 6px;
    border-radius: 4px;
}

.bq-badge-required {
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 10px;
    background: #fee2e2;
    color: #991b1b;
}

.bq-badge-optional {
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 10px;
    background: #e0f2fe;
    color: #075985;
}

/* External link */

.bq-ext-link {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 16px;
    border: 1px solid var(--bq-border);
    border-radius: var(--bq-radius);
    margin: 16px 0;
    text-decoration: none;
    transition: all var(--bq-transition);
}

.bq-ext-link:hover {
    border-color: var(--bq-accent);
    box-shadow: var(--bq-shadow);
}

.bq-ext-link .link-icon {
    font-size: 16px;
    margin-top: 2px;
    color: var(--bq-text-tertiary);
}

.bq-ext-link .link-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--bq-accent);
    margin-bottom: 2px;
}

.bq-ext-link .link-desc {
    font-size: 12px;
    color: var(--bq-text-tertiary);
}

/* ---------- Footer ---------- */

.bq-footer {
    border-top: 1px solid var(--bq-border);
    padding: 24px;
    text-align: center;
}

.bq-footer p {
    font-size: 12px;
    color: var(--bq-text-tertiary);
}

.bq-footer a {
    color: var(--bq-text-secondary);
    text-decoration: none;
}

.bq-footer a:hover {
    color: var(--bq-text);
}

/* ---------- Responsive ---------- */

@media (max-width: 768px) {
    .bq-hero {
        padding: 60px 20px 50px;
    }

    .bq-hero h1 {
        font-size: 28px;
    }

    .bq-hero .bq-subtitle {
        font-size: 15px;
    }

    .bq-features {
        grid-template-columns: 1fr;
        padding: 0 20px 50px;
    }

    .bq-manual-layout {
        grid-template-columns: 1fr;
        padding: 20px 20px 60px;
    }

    .bq-manual-sidebar {
        position: static;
        max-height: none;
        border-bottom: 1px solid var(--bq-border);
        padding-bottom: 16px;
        margin-bottom: 24px;
    }

    .bq-topnav-links {
        gap: 2px;
    }

    .bq-topnav-links a {
        font-size: 12px;
        padding: 6px 8px;
    }
}

@media (max-width: 480px) {
    .bq-topnav-inner {
        flex-wrap: wrap;
        height: auto;
        padding: 10px 0;
        gap: 8px;
    }

    .bq-topnav-links {
        width: 100%;
        justify-content: center;
    }
}