/* ── Reset & Base ─────────────────────────────────────────────────────────── */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #1a1a2e;
    background: #f8f9fa;
}

/* ── Header ───────────────────────────────────────────────────────────────── */
header {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #fff;
    padding: 40px 0;
    text-align: center;
}
header h1 { font-size: 2.2rem; margin-bottom: 8px; }
header p  { font-size: 1.05rem; opacity: 0.85; }
.version {
    display: inline-block;
    background: rgba(255,255,255,0.15);
    padding: 2px 12px;
    border-radius: 12px;
    font-size: 0.85rem;
    margin-top: 10px;
}

/* ── Page layout ──────────────────────────────────────────────────────────── */
.page-wrapper {
    display: flex;
    align-items: flex-start;
}

/* ── Sidebar ──────────────────────────────────────────────────────────────── */
.sidebar {
    width: 230px;
    flex-shrink: 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    background: #fff;
    border-right: 1px solid #e0e0e0;
    box-shadow: 1px 0 4px rgba(0,0,0,0.04);
    transition: width 0.22s ease;
    z-index: 50;
    /* hide scrollbar chrome/safari */
    scrollbar-width: thin;
    scrollbar-color: #d0d5de transparent;
}
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: #d0d5de; border-radius: 2px; }

.sidebar.collapsed {
    width: 36px;
}

/* Toggle button — always visible */
.sidebar-toggle {
    position: sticky;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 36px;
    background: #edf0f5;
    border: none;
    border-bottom: 1px solid #e0e0e0;
    cursor: pointer;
    font-size: 1rem;
    color: #16213e;
    transition: background 0.15s;
    z-index: 10;
    flex-shrink: 0;
}
.sidebar-toggle:hover { background: #dde3ed; }

/* Nav content inside sidebar */
.sidebar-inner {
    padding: 10px 0 20px;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar.collapsed .sidebar-inner {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.1s;
}

.nav-group-label {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: #999;
    padding: 12px 16px 4px;
    display: block;
}

.sidebar nav ul {
    list-style: none;
}

.sidebar nav a {
    display: block;
    padding: 5px 16px;
    font-size: 0.85rem;
    font-weight: 500;
    color: #334;
    text-decoration: none;
    border-left: 3px solid transparent;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.sidebar nav a:hover {
    background: #f0f3f8;
    color: #16213e;
}
.sidebar nav a.active {
    background: #edf2ff;
    border-left-color: #16213e;
    color: #16213e;
    font-weight: 600;
}

/* ── Main content ─────────────────────────────────────────────────────────── */
.main-content {
    flex: 1;
    min-width: 0;
}

.container { max-width: 920px; margin: 0 auto; padding: 30px 28px 60px; }

/* ── Intro ────────────────────────────────────────────────────────────────── */
.intro {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    padding: 28px;
    margin-bottom: 30px;
}
.intro h2 { font-size: 1.3rem; margin-bottom: 12px; }
.intro p  { color: #444; margin-bottom: 10px; }

/* ── Source table ─────────────────────────────────────────────────────────── */
.source-table { margin: 20px 0; overflow-x: auto; }
.source-table h3 { font-size: 1rem; margin-bottom: 10px; color: #16213e; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th { background: #16213e; color: #fff; padding: 10px 14px; text-align: left; font-weight: 600; }
td { padding: 9px 14px; border-bottom: 1px solid #e8e8e8; }
tr:nth-child(even) { background: #f5f7fa; }
tr:hover { background: #edf0f5; }
td.null-val { color: #999; font-style: italic; }

/* ── Method cards ─────────────────────────────────────────────────────────── */
.method {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    margin-bottom: 28px;
    overflow: hidden;
}
.method-header {
    background: #edf0f5;
    padding: 18px 24px;
    border-bottom: 1px solid #e0e0e0;
}
.method-header h2 { font-size: 1.35rem; color: #16213e; margin-bottom: 4px; }
.method-signature {
    font-family: "Cascadia Code", "Fira Code", "Consolas", monospace;
    font-size: 0.85rem;
    color: #555;
    margin-top: 6px;
}
.method-body { padding: 20px 24px; }
.method-body p { color: #444; margin-bottom: 14px; }

/* ── Badges ───────────────────────────────────────────────────────────────── */
.badge {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 4px;
    margin-left: 8px;
    vertical-align: middle;
}
.badge-list   { background: #d4edda; color: #155724; }
.badge-map    { background: #cce5ff; color: #004085; }
.badge-meta   { background: #fff3cd; color: #856404; }
.badge-noclose { background: #f8d7da; color: #721c24; font-weight: 500; }

/* ── Param list ───────────────────────────────────────────────────────────── */
.param-list { margin: 12px 0; padding: 0; list-style: none; }
.param-list li { padding: 4px 0; font-size: 0.9rem; }
.param-name {
    font-family: "Cascadia Code", "Fira Code", "Consolas", monospace;
    background: #f0f0f0;
    padding: 1px 6px;
    border-radius: 3px;
    font-size: 0.85rem;
}

/* ── Output label ─────────────────────────────────────────────────────────── */
.output-label { font-weight: 600; font-size: 0.9rem; color: #16213e; margin-bottom: 8px; }

/* ── Code blocks ──────────────────────────────────────────────────────────── */
pre {
    background: #1e1e2e;
    color: #cdd6f4;
    padding: 16px 20px;
    border-radius: 8px;
    overflow-x: auto;
    font-family: "Cascadia Code", "Fira Code", "Consolas", monospace;
    font-size: 0.85rem;
    line-height: 1.5;
    margin-bottom: 14px;
}
.json-key     { color: #89b4fa; }
.json-str     { color: #a6e3a1; }
.json-num     { color: #fab387; }
.json-bracket { color: #cdd6f4; }

/* ── Note ─────────────────────────────────────────────────────────────────── */
.note {
    background: #fff8e1;
    border-left: 4px solid #ffc107;
    padding: 12px 16px;
    border-radius: 0 6px 6px 0;
    font-size: 0.88rem;
    color: #665500;
    margin: 14px 0;
}

/* ── Type grid ────────────────────────────────────────────────────────────── */
.types-section { margin-top: 16px; }
.types-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 6px;
    margin-top: 10px;
}
.type-item {
    font-family: "Cascadia Code", "Fira Code", "Consolas", monospace;
    font-size: 0.8rem;
    padding: 6px 10px;
    background: #f5f7fa;
    border-radius: 4px;
    border: 1px solid #e8e8e8;
}

/* ── Footer ───────────────────────────────────────────────────────────────── */
footer {
    text-align: center;
    padding: 30px;
    color: #888;
    font-size: 0.85rem;
    border-top: 1px solid #e0e0e0;
}