/**
 * RockTranslate — Documentation page
 * Path: docs/docs.css
 *
 * Builds on the landing page tokens (style.css): same palette, same faces,
 * light and dark themes. Layout: sticky top bar, sidebar index, reading column.
 */

.docs-body {
    background: var(--bg-page);
    color: var(--text-primary);
    font-family: var(--font-sans);
}

.docs-topbar {
    position: sticky;
    top: env(safe-area-inset-top, 0px);
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding-block: 12px;
    padding-left: max(20px, env(safe-area-inset-left, 0px));
    padding-right: max(20px, env(safe-area-inset-right, 0px));
    background: var(--bg-page);
    border-bottom: 1px solid var(--border-subtle);
}

.docs-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
}

.docs-version {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary-border);
    border-radius: 4px;
    padding: 1px 6px;
}

.docs-topnav { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.docs-topnav a { color: var(--text-secondary); text-decoration: none; font-size: 0.92rem; font-weight: 600; }
.docs-topnav a:hover { color: var(--accent-primary); }

.docs-theme {
    font: inherit;
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border-medium);
    border-radius: 6px;
    padding: 4px 10px;
    cursor: pointer;
}

.docs-layout {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
    max-width: 1180px;
    margin: 0 auto;
    padding-left: max(20px, env(safe-area-inset-left, 0px));
    padding-right: max(20px, env(safe-area-inset-right, 0px));
    gap: 48px;
}

.docs-sidebar {
    position: sticky;
    top: calc(env(safe-area-inset-top, 0px) + 64px);
    align-self: start;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding-block: 28px;
}

.docs-group {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: var(--text-muted);
    margin: 18px 0 6px;
}

.docs-group:first-child { margin-top: 0; }

.docs-sidebar a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.92rem;
    padding: 5px 10px;
    border-left: 2px solid transparent;
}

.docs-sidebar a:hover { color: var(--text-primary); }
.docs-sidebar a.current { color: var(--accent-primary); border-left-color: var(--accent-primary); font-weight: 600; }

.docs-main { min-width: 0; padding-block: 28px 80px; max-width: 760px; }

.docs-hero h1 {
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: clamp(2rem, 4vw, 2.75rem);
    line-height: 1.15;
    letter-spacing: -0.5px;
    text-wrap: balance;
    margin-bottom: 14px;
}

.docs-hero p { color: var(--text-secondary); font-size: 1.05rem; line-height: 1.7; max-width: 65ch; }

.docs-section {
    padding-top: 40px;
    margin-top: 40px;
    border-top: 1px solid var(--border-subtle);
    scroll-margin-top: 80px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.docs-section h2 { font-size: 1.5rem; font-weight: 800; letter-spacing: -0.3px; }
.docs-section h3 { font-size: 1.05rem; font-weight: 700; margin-top: 8px; }
.docs-section p, .docs-list li { color: var(--text-secondary); line-height: 1.7; max-width: 68ch; }
.docs-section a { color: var(--accent-primary); }

.docs-section :not(pre) > code,
.docs-table code,
.docs-api code {
    font-family: var(--font-mono);
    font-size: 0.85em;
    background: var(--bg-subtle);
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    padding: 1px 5px;
    overflow-wrap: anywhere;
}

.docs-code {
    margin: 0;
    background: var(--terminal-bg);
    color: var(--terminal-text);
    border: 1px solid var(--terminal-border);
    border-radius: 8px;
    padding: 16px 18px;
    font-family: var(--font-mono);
    font-size: 0.84rem;
    line-height: 1.65;
    overflow-x: auto;
    font-variant-numeric: tabular-nums;
}

.docs-hint { font-size: 0.9rem; color: var(--text-muted) !important; }

.docs-tablist { display: flex; gap: 4px; margin-bottom: 8px; }

.docs-tablist button {
    font: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border-medium);
    border-radius: 6px;
    padding: 5px 12px;
    cursor: pointer;
}

.docs-tablist button.active { color: var(--accent-primary); border-color: var(--accent-primary-border); background: var(--accent-primary-subtle); }
.docs-tablist button:focus-visible, .docs-theme:focus-visible { outline: 2px solid var(--accent-primary); outline-offset: 2px; }

.docs-panel { border: 1px solid var(--border-medium); border-radius: 8px; padding: 14px 16px; }

.table-scroll { width: 100%; overflow-x: auto; }

.docs-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }

.docs-table th,
.docs-table td {
    text-align: left;
    vertical-align: top;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-secondary);
}

.docs-table thead th { font-size: 0.75rem; letter-spacing: 0.5px; text-transform: uppercase; color: var(--text-muted); }

.docs-api { display: flex; flex-direction: column; gap: 6px; }
.docs-api dt { font-weight: 700; color: var(--text-primary); margin-top: 10px; overflow-wrap: anywhere; }
.docs-api dd { margin: 0; color: var(--text-secondary); line-height: 1.65; }

.docs-list { display: flex; flex-direction: column; gap: 8px; padding-left: 20px; }

.docs-figure { margin: 4px 0; display: flex; flex-direction: column; gap: 8px; }

.docs-figure img {
    max-width: 100%;
    height: auto;
    border: 1px solid var(--border-medium);
    border-radius: 6px;
    background: #fff;
}

.docs-figure-narrow img { max-width: 520px; }
.docs-figure figcaption { font-size: 0.85rem; color: var(--text-muted); }

.docs-foot { margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--border-subtle); font-size: 0.88rem; color: var(--text-muted); }
.docs-foot a { color: var(--accent-primary); }

@media (max-width: 860px) {
    .docs-layout { grid-template-columns: minmax(0, 1fr); gap: 0; }
    .docs-sidebar {
        position: static;
        max-height: none;
        flex-direction: row;
        flex-wrap: wrap;
        gap: 4px 10px;
        padding-block: 16px 0;
        border-bottom: 1px solid var(--border-subtle);
    }
    .docs-group { width: 100%; margin: 8px 0 0; }
    .docs-sidebar a { border-left: none; padding: 3px 0; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }