:root {
    --bg: #ffffff;
    --bg-soft: #f7f8fa;
    --bg-code: #f4f4f5;
    --border: #e4e4e7;
    --border-strong: #d4d4d8;
    --text: #18181b;
    --text-soft: #52525b;
    --text-muted: #71717a;
    --primary: #6750a4;
    --primary-soft: #ede9f6;
    --primary-strong: #4f378b;
    --max-width: 1080px;
    --header-height: 56px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #1c1b1f;
        --bg-soft: #28272b;
        --bg-code: #2a2930;
        --border: #38373d;
        --border-strong: #4a4951;
        --text: #e6e1e5;
        --text-soft: #c2c0c8;
        --text-muted: #908f96;
        --primary: #d0bcff;
        --primary-soft: #2a223a;
        --primary-strong: #b596f5;
    }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

.site-header {
    position: sticky;
    top: 0;
    height: var(--header-height);
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    z-index: 10;
}
.site-header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    height: 100%;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.site-brand {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.01em;
}
.site-brand:hover { text-decoration: none; color: var(--primary); }
.site-nav { display: flex; gap: 20px; font-size: 14px; }
.site-nav a { color: var(--text-soft); }

.outline-toggle {
    display: none;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 4px 8px;
    color: var(--text);
    cursor: pointer;
}
.outline-toggle:hover { background: var(--bg-soft); }
.outline-toggle:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

.outline-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 19;
    opacity: 0;
    pointer-events: none;
    transition: opacity 200ms ease;
}
.outline-backdrop.visible {
    opacity: 1;
    pointer-events: auto;
}

.docs-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 32px 24px 64px;
}

.docs-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 48px;
    align-items: start;
}

.docs-main { min-width: 0; }
.docs-loading { color: var(--text-muted); font-style: italic; }
.docs-error {
    background: #fff5f5;
    border: 1px solid #fca5a5;
    color: #991b1b;
    padding: 16px;
    border-radius: 8px;
}
@media (prefers-color-scheme: dark) {
    .docs-error { background: #3a1f1f; border-color: #7f1d1d; color: #fca5a5; }
}

.docs-outline {
    position: sticky;
    top: calc(var(--header-height) + 24px);
    max-height: calc(100vh - var(--header-height) - 48px);
    overflow-y: auto;
    background: var(--bg-soft);
    border-radius: 12px;
    padding: 16px 0;
    font-size: 13px;
}
.docs-outline-title {
    padding: 4px 20px 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
}
.docs-nav-item {
    padding: 6px 20px;
    cursor: pointer;
    color: var(--text);
    font-weight: 500;
    border-left: 2px solid transparent;
}
.docs-nav-item:hover, .docs-nav-item.active {
    color: var(--primary);
    border-left-color: var(--primary);
    background: var(--primary-soft);
}
.docs-nav-sub { padding: 2px 0 8px; }
.docs-nav-subitem {
    padding: 4px 20px 4px 32px;
    cursor: pointer;
    color: var(--text-soft);
    font-weight: 400;
    border-left: 2px solid transparent;
}
.docs-nav-subitem:hover, .docs-nav-subitem.active {
    color: var(--primary);
    border-left-color: var(--primary);
    background: var(--primary-soft);
}

.docs-section { margin-bottom: 48px; scroll-margin-top: calc(var(--header-height) + 16px); }
.docs-section h1 {
    font-size: 32px;
    font-weight: 700;
    margin: 0 0 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-soft);
    letter-spacing: -0.02em;
}
.docs-section.docs-subsection { margin-bottom: 32px; }
.docs-section h2 {
    font-size: 22px;
    font-weight: 600;
    margin: 0 0 12px;
    letter-spacing: -0.01em;
}
.docs-section .docs-h3 {
    font-size: 17px;
    font-weight: 600;
    margin: 20px 0 8px;
    color: var(--text);
}
.docs-section .docs-img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 12px 0;
    border: 1px solid var(--border);
}
.docs-hr {
    border: 0;
    border-top: 1px solid var(--border);
    margin: 32px 0;
}
.docs-section p { margin: 0 0 12px; color: var(--text); }
.docs-section ul, .docs-section ol { margin: 0 0 16px; padding-left: 24px; }
.docs-section li { margin-bottom: 6px; }
.docs-section strong { font-weight: 600; }
.docs-section code {
    background: var(--bg-code);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: "SFMono-Regular", Menlo, Consolas, monospace;
    font-size: 0.9em;
    color: var(--primary);
}
.docs-section kbd {
    display: inline-block;
    background: var(--bg);
    border: 1px solid var(--border-strong);
    border-radius: 4px;
    padding: 2px 6px;
    font-family: inherit;
    font-size: 0.85em;
    box-shadow: 0 1px 0 var(--border);
}

.docs-tip {
    background: var(--primary-soft);
    border-left: 3px solid var(--primary);
    padding: 12px 16px;
    border-radius: 0 8px 8px 0;
    margin: 16px 0;
}
.docs-tip p { margin: 0; }
.docs-tip p + p { margin-top: 8px; }
.docs-tip strong { color: var(--primary-strong); }

.docs-table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    font-size: 14px;
}
.docs-table th, .docs-table td {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}
.docs-table th {
    background: var(--bg-soft);
    font-weight: 600;
    border-bottom: 2px solid var(--border-strong);
}
.docs-table tr:hover td { background: var(--bg-soft); }

.docs-code {
    background: var(--bg-code);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 16px;
    overflow-x: auto;
    font-family: "SFMono-Regular", Menlo, Consolas, monospace;
    font-size: 13px;
    line-height: 1.5;
    white-space: pre;
    margin: 12px 0;
}

.docs-link { color: var(--primary); }
.docs-link.docs-link-disabled {
    color: var(--text-muted);
    cursor: not-allowed;
    text-decoration: underline dotted;
}

.site-footer {
    border-top: 1px solid var(--border);
    padding: 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

@media (max-width: 880px) {
    .docs-layout { grid-template-columns: 1fr; }
    .outline-toggle { display: inline-flex; align-items: center; }

    /* Outline becomes a right-side drawer; toggled open via the header button. */
    .docs-outline {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: min(80vw, 320px);
        max-height: 100vh;
        border-radius: 12px 0 0 12px;
        padding: 16px 0;
        margin: 0;
        overflow-y: auto;
        box-shadow: -4px 0 16px rgba(0, 0, 0, 0.15);
        transform: translateX(100%);
        transition: transform 220ms ease;
        z-index: 20;
    }
    .docs-outline.open { transform: translateX(0); }
}