/* ============================================
   Docs system — /docs index + /docs/{slug} viewer.
   The viewer's body is HTML rendered by Markdig, so the prose styles
   here target plain elements (h1, h2, p, code, pre, etc.) inside the
   .docs-prose container.
   ============================================ */

/* ===== HERO ===== */
.docs-hero {
    padding: 4rem 0 2.5rem;
}

.docs-eyebrow {
    font-size: var(--tgn-text-sm);
    font-weight: var(--tgn-font-semibold);
    color: var(--tgn-primary);
    text-transform: uppercase;
    letter-spacing: var(--tgn-tracking-wider);
    margin: 0 0 1rem;
}

.docs-headline {
    font-size: var(--tgn-text-3xl);
    font-weight: var(--tgn-font-bold);
    line-height: var(--tgn-leading-tight);
    margin: 0 0 1rem;
    max-width: 28ch;
}

.docs-lede {
    font-size: var(--tgn-text-lg);
    line-height: var(--tgn-leading-snug);
    color: var(--tgn-text-secondary);
    max-width: 60ch;
    margin: 0;
}

.docs-lede a {
    color: var(--tgn-primary);
}

/* ===== INDEX LIST ===== */
.docs-list {
    padding: 1rem 0 5rem;
}

.docs-group__title {
    font-size: var(--tgn-text-2xl);
    font-weight: var(--tgn-font-bold);
    margin: 2.5rem 0 1rem;
}

.docs-group__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.docs-card {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background: var(--tgn-glass-bg);
    border: 1px solid var(--tgn-glass-border);
    border-radius: var(--tgn-radius-lg, 0.75rem);
    padding: 1.25rem 1.5rem;
    text-decoration: none;
    color: var(--tgn-text-primary);
    transition: border-color 200ms ease, transform 200ms ease;
}

.docs-card:hover,
.docs-card:focus-visible {
    border-color: var(--tgn-primary);
    outline: 0;
}

.docs-card h3 {
    font-size: var(--tgn-text-lg);
    font-weight: var(--tgn-font-semibold);
    margin: 0;
    color: var(--tgn-text-primary);
}

.docs-card p {
    font-size: var(--tgn-text-sm);
    line-height: var(--tgn-leading-relaxed);
    color: var(--tgn-text-secondary);
    margin: 0;
}

.docs-card__arrow {
    margin-top: 0.5rem;
    font-size: var(--tgn-text-sm);
    color: var(--tgn-primary);
    font-weight: var(--tgn-font-semibold);
}

.docs-empty {
    padding: 3rem 0;
    text-align: center;
    color: var(--tgn-text-secondary);
}

/* ===== MISSING DOC ===== */
.docs-missing {
    padding: 5rem 0;
}

.docs-missing h1 {
    font-size: var(--tgn-text-3xl);
    font-weight: var(--tgn-font-bold);
    margin: 0 0 1rem;
}

.docs-missing p {
    color: var(--tgn-text-secondary);
}

.docs-missing a,
.docs-missing code {
    color: var(--tgn-primary);
}

/* ===== VIEWER LAYOUT ===== */
.docs-viewer {
    padding: 3rem 0 5rem;
}

.docs-viewer__layout {
    display: grid;
    grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
    gap: 3rem;
    align-items: start;
}

/* ----- Sidebar ----- */
.docs-sidebar {
    position: sticky;
    top: 2rem;
    background: var(--tgn-bg-secondary);
    border: 1px solid var(--tgn-glass-border);
    border-radius: var(--tgn-radius-md, 0.5rem);
    padding: 1.25rem 1.25rem 1rem;
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
    scrollbar-width: none;
}

.docs-sidebar::-webkit-scrollbar {
    display: none;
}

.docs-sidebar__eyebrow {
    font-size: var(--tgn-text-xs);
    font-weight: var(--tgn-font-semibold);
    color: var(--tgn-primary);
    text-transform: uppercase;
    letter-spacing: var(--tgn-tracking-wider);
    margin: 0 0 0.75rem;
}

.docs-sidebar ul {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem;
}

.docs-sidebar li {
    padding: 0.4rem 0;
    border-bottom: 1px solid var(--tgn-glass-border);
}

.docs-sidebar li:last-child {
    border-bottom: 0;
}

.docs-sidebar li a,
.docs-sidebar li strong {
    font-size: var(--tgn-text-sm);
    line-height: var(--tgn-leading-snug);
    color: var(--tgn-text-primary);
    text-decoration: none;
    display: block;
}

.docs-sidebar li strong {
    color: var(--tgn-primary);
    font-weight: var(--tgn-font-semibold);
}

.docs-sidebar li a:hover {
    color: var(--tgn-primary);
}

.docs-sidebar__back {
    margin: 0;
    padding-top: 0.75rem;
    border-top: 1px solid var(--tgn-glass-border);
    font-size: var(--tgn-text-sm);
}

.docs-sidebar__back a {
    color: var(--tgn-text-secondary);
    text-decoration: none;
}

.docs-sidebar__back a:hover {
    color: var(--tgn-primary);
}

/* ----- Prose: Markdown-rendered body ----- */
.docs-prose {
    max-width: 75ch;
    color: var(--tgn-text-primary);
    line-height: var(--tgn-leading-relaxed, 1.7);
    font-size: var(--tgn-text-base);
}

.docs-prose h1 {
    font-size: var(--tgn-text-3xl);
    font-weight: var(--tgn-font-bold);
    line-height: var(--tgn-leading-tight);
    margin: 0 0 1.5rem;
}

.docs-prose h2 {
    font-size: var(--tgn-text-2xl);
    font-weight: var(--tgn-font-bold);
    margin: 2.5rem 0 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--tgn-glass-border);
}

.docs-prose h3 {
    font-size: var(--tgn-text-xl);
    font-weight: var(--tgn-font-semibold);
    margin: 2rem 0 0.5rem;
}

.docs-prose h4 {
    font-size: var(--tgn-text-lg);
    font-weight: var(--tgn-font-semibold);
    margin: 1.5rem 0 0.5rem;
}

.docs-prose p {
    margin: 0 0 1.25rem;
}

.docs-prose a {
    color: var(--tgn-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.docs-prose a:hover {
    text-decoration: none;
}

.docs-prose strong {
    font-weight: var(--tgn-font-semibold);
    color: var(--tgn-text-primary);
}

.docs-prose ul,
.docs-prose ol {
    padding-left: 1.5rem;
    margin: 0 0 1.25rem;
}

.docs-prose li {
    margin: 0.4rem 0;
}

.docs-prose blockquote {
    margin: 1.5rem 0;
    padding: 0.75rem 1.25rem;
    border-left: 3px solid var(--tgn-primary);
    background: rgba(33, 150, 243, 0.05);
    color: var(--tgn-text-primary);
    border-radius: 0 0.25rem 0.25rem 0;
}

.docs-prose code {
    background: var(--tgn-bg-secondary);
    border: 1px solid var(--tgn-glass-border);
    padding: 0.1em 0.35em;
    border-radius: 0.25rem;
    font-family: var(--tgn-font-mono);
    font-size: 0.9em;
    color: var(--tgn-text-primary);
}

.docs-prose pre {
    background: #0d1117;
    border: 1px solid var(--tgn-glass-border);
    border-radius: var(--tgn-radius-md, 0.5rem);
    padding: 1.25rem 1.5rem;
    overflow-x: auto;
    margin: 0 0 1.5rem;
}

.docs-prose pre code {
    background: transparent;
    border: 0;
    padding: 0;
    color: #c9d1d9;
    font-size: var(--tgn-text-sm);
    line-height: var(--tgn-leading-relaxed);
}

.docs-prose table {
    width: 100%;
    border-collapse: collapse;
    margin: 0 0 1.5rem;
    font-size: var(--tgn-text-sm);
}

.docs-prose th,
.docs-prose td {
    padding: 0.6rem 0.9rem;
    border: 1px solid var(--tgn-glass-border);
    text-align: left;
    vertical-align: top;
}

.docs-prose th {
    background: var(--tgn-bg-secondary);
    font-weight: var(--tgn-font-semibold);
}

.docs-prose hr {
    border: 0;
    border-top: 1px solid var(--tgn-glass-border);
    margin: 2rem 0;
}

.docs-prose img {
    max-width: 100%;
    height: auto;
    border-radius: var(--tgn-radius-md, 0.5rem);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 819px) {
    .docs-hero {
        padding: 3rem 0 2rem;
    }

    .docs-headline {
        font-size: var(--tgn-text-2xl);
    }

    .docs-viewer {
        padding: 2rem 0 4rem;
    }

    .docs-viewer__layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .docs-sidebar {
        position: static;
        max-height: none;
    }

    .docs-prose h1 {
        font-size: var(--tgn-text-2xl);
    }

    .docs-prose h2 {
        font-size: var(--tgn-text-xl);
        margin-top: 2rem;
    }
}