/* Gita section of Ujjwal Bharat Labs. Builds on /styles.css (tokens, header, footer, buttons).
   Reading pages use a narrow column; index pages use card grids. */
:root { --font-hi: "Noto Sans Devanagari", "Nirmala UI", "Mangal", sans-serif; --read: 44rem; }

/* Language switch: html[data-lang] = en | hi | both */
html[data-lang="en"] .t-hi, html[data-lang="hi"] .t-en { display: none !important; }
html[data-lang="both"] .t-hi { margin-top: 0.4em; }
[lang="hi"] { font-family: var(--font-hi); }
.t-hi { font-family: var(--font-hi); }
h1 .t-hi, h2 .t-hi, h3.t-hi, .cc-title .t-hi { font-weight: 600; }
html[data-lang="both"] h1 .t-hi, html[data-lang="both"] h2 .t-hi { display: block; font-size: 0.7em; color: var(--muted); margin-top: 0.25em; }
html[data-lang="both"] h3.t-hi { font-size: 0.95rem; color: var(--muted); margin-top: 2px; }
html[data-lang="both"] .chip .t-hi::before { content: " · "; }
html[data-lang="both"] .chip .t-hi { margin-top: 0; }

.top-row { flex-wrap: wrap; }
.brand-labs { font-weight: 500; font-size: 0.85em; }
.lang-switch { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.lang-switch button { font: inherit; font-size: 0.82rem; font-weight: 600; background: transparent; color: var(--muted); border: 0; padding: 6px 12px; min-height: 34px; cursor: pointer; }
.lang-switch button[aria-pressed="true"] { background: var(--accent); color: var(--bg); }
.lang-switch button:focus-visible { outline: 3px solid var(--accent-bright); outline-offset: -3px; }
@media (max-width: 640px) {
  .top-row { padding-block: 8px; }
  .brand-labs { display: none; }
  .top-nav { gap: 14px; }
  .top-nav a:not(.to-main) { display: inline; font-size: 0.88rem; }
}

.crumbs { font-size: 0.88rem; color: var(--muted); margin-bottom: 14px; }
.crumbs a { color: var(--muted); }

/* Sanskrit */
.sanskrit, .vc-sa { font-family: var(--font-sa); line-height: 1.8; color: var(--text); }
.sanskrit { font-size: clamp(1.1rem, 2.3vw, 1.35rem); padding: 16px 20px; border-left: 3px solid var(--accent-bright); background: var(--accent-soft); border-radius: 0 10px 10px 0; }
.sanskrit-lg { font-size: clamp(1.3rem, 3.2vw, 1.75rem); padding: 22px 26px; }
.iast { font-style: italic; color: var(--muted); line-height: 1.7; margin-top: 14px; }

/* Home hero */
.gita-hero { padding-block: clamp(36px, 6vw, 72px); background: radial-gradient(60% 80% at 85% 20%, var(--accent-soft), transparent 70%); }
.gita-hero-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(28px, 4vw, 56px); align-items: center; }
.gita-hero-copy { display: grid; gap: 20px; min-width: 0; }
.gita-hero-img, .chapter-img { width: 100%; height: auto; border-radius: var(--radius); border: 1px solid var(--line); display: block; }
@media (max-width: 860px) { .gita-hero-grid, .chapter-hero-grid { grid-template-columns: 1fr; } .gita-hero-img { order: -1; } }

/* Verse of the day */
.votd { padding-block: clamp(32px, 5vw, 56px); display: grid; gap: 12px; }
.votd-card { display: grid; gap: 12px; text-decoration: none; color: var(--text); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(20px, 3vw, 32px); max-width: var(--read); }
.votd-card:hover { border-color: var(--accent); }
.votd-card p:not(.sanskrit) { color: var(--muted); }
.vc-ref { font-family: var(--font-head); font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }

.home-section { padding-block: clamp(32px, 5vw, 64px); }
.home-chapters { padding-block: clamp(48px, 7vw, 88px); background: var(--bg-2); border-top: 1px solid var(--line); }

/* Topic cards */
.topic-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.topic-card { display: grid; gap: 6px; align-content: start; padding: 18px 20px; border: 1px solid var(--line); border-radius: 12px; text-decoration: none; color: var(--text); background: var(--surface); transition: border-color .2s, transform .2s var(--ease); }
.topic-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.topic-card h3 { font-size: 1.1rem; }
.topic-card p { font-size: 0.92rem; color: var(--muted); line-height: 1.5; }
html[data-lang="both"] .topic-card p.t-hi { display: none; }

/* Chapter cards */
.chapter-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 18px; }
.chapter-card { display: grid; text-decoration: none; color: var(--text); background: var(--surface); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; transition: border-color .2s, transform .2s var(--ease); }
.chapter-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.chapter-card img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; display: block; }
.cc-body { display: grid; gap: 2px; padding: 14px 16px 16px; }
.cc-num { font-size: 0.78rem; color: var(--accent); font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; }
.cc-title { font-family: var(--font-head); font-weight: 600; font-size: 1.1rem; }
.cc-sa { font-size: 0.88rem; color: var(--muted); font-style: italic; }
@media (prefers-reduced-motion: reduce) { .topic-card, .chapter-card { transition: none; } .topic-card:hover, .chapter-card:hover { transform: none; } }

/* Chapter page */
.chapter-hero { padding-block: clamp(32px, 5vw, 64px); border-bottom: 1px solid var(--line); }
.chapter-hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 4vw, 56px); align-items: center; }
.chapter-hero-copy { display: grid; gap: 14px; min-width: 0; justify-items: start; }
.chapter-hero h1 { font-size: clamp(2rem, 4.4vw, 3rem); }
.chapter-sa { color: var(--muted); font-size: 1.05rem; }
.chapter-sa [lang="sa"] { font-family: var(--font-sa); color: var(--text); }
.chapter-summary { color: var(--muted); max-width: 38em; }
.chapter-verses { padding-block: clamp(32px, 5vw, 56px); display: grid; gap: 20px; }
.verse-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; max-width: 56rem; }
.verse-list a { display: grid; grid-template-columns: 4rem minmax(0, 1fr); gap: 14px; padding: 14px 12px; border-radius: 10px; text-decoration: none; color: var(--text); }
.verse-list a:hover { background: var(--bg-2); }
.vl-num { font-family: var(--font-head); font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }
.vl-body { display: grid; gap: 4px; min-width: 0; }
.vl-sa { font-family: var(--font-sa); font-size: 1.05rem; }
.vl-meaning { color: var(--muted); font-size: 0.95rem; line-height: 1.5; }
html[data-lang="both"] .vl-meaning.t-hi { margin-top: 0; }

/* Verse page */
.verse-page { padding-block: clamp(28px, 5vw, 56px) clamp(48px, 7vw, 80px); max-width: calc(var(--read) + 40px); display: grid; gap: 28px; }
.verse-head { display: grid; gap: 6px; }
.verse-head h1 { font-size: clamp(1.9rem, 4.4vw, 2.6rem); }
.speaker { color: var(--muted); font-weight: 500; }
html[data-lang="both"] .speaker .t-hi::before { content: " · "; }
.verse-meaning { display: grid; gap: 10px; }
.verse-meaning h2, .verse-topics h2, .chapter-verses h2, .topic-page h2 { font-size: 1.15rem; }
html[data-lang="both"] .verse-meaning h2 .t-hi, html[data-lang="both"] .verse-topics h2 .t-hi { display: inline; font-size: 1em; }
html[data-lang="both"] .verse-meaning h2 .t-hi::before, html[data-lang="both"] .verse-topics h2 .t-hi::before { content: " · "; }
.meaning { font-size: 1.12rem; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.chip { display: inline-flex; padding: 6px 14px; border-radius: 999px; border: 1px solid var(--line); text-decoration: none; color: var(--text); font-size: 0.9rem; background: var(--surface); }
.chip:hover { border-color: var(--accent); }
.verse-actions .btn { font: inherit; font-weight: 600; cursor: pointer; }
.verse-nav { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: center; padding-top: 20px; border-top: 1px solid var(--line); font-weight: 600; }
.verse-nav a { text-decoration: none; }
.verse-nav a[rel="next"] { justify-self: end; }
.verse-nav a:not([rel]) { justify-self: center; font-weight: 500; font-size: 0.92rem; color: var(--muted); text-align: center; }
@media (max-width: 480px) { .verse-nav { grid-template-columns: 1fr 1fr; } .verse-nav a:not([rel]) { grid-row: 2; grid-column: 1 / -1; } }

/* Topic pages */
.topic-page { padding-block: clamp(28px, 5vw, 56px) clamp(48px, 7vw, 80px); display: grid; gap: 18px; }
.topic-page h1 { font-size: clamp(2rem, 4.4vw, 2.8rem); }
.topic-page .lead { max-width: 40em; }
.topic-page h2 { margin-top: 18px; }
.verse-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.verse-card { display: grid; gap: 10px; align-content: start; padding: 20px; border: 1px solid var(--line); border-radius: 14px; text-decoration: none; color: var(--text); background: var(--surface); }
.verse-card:hover { border-color: var(--accent); }
.vc-sa { font-size: 1.05rem; }
.vc-meaning { color: var(--muted); font-size: 0.95rem; line-height: 1.5; }
.link-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 2px; max-width: 56rem; }
.link-list a { display: grid; grid-template-columns: 4rem minmax(0, 1fr); gap: 14px; padding: 12px; border-radius: 10px; text-decoration: none; color: var(--muted); }
.link-list a:hover { background: var(--bg-2); color: var(--text); }
html[data-lang="both"] .link-list .t-hi { grid-column: 2; margin-top: 0; }

/* About */
.prose { padding-block: clamp(28px, 5vw, 56px) clamp(48px, 7vw, 80px); max-width: calc(var(--read) + 40px); display: grid; gap: 14px; }
.prose h1 { font-size: clamp(2rem, 4.4vw, 2.8rem); }
.prose h2 { font-size: 1.25rem; margin-top: 14px; }
.prose p { color: var(--muted); }