/* ==============================================================
   DMV Learn — single stylesheet, light + dark, mobile-first
   ============================================================== */

:root {
  --bg: #f7f7fb;
  --surface: #ffffff;
  --surface-2: #f1f3f9;
  --border: #e4e7ef;
  --text: #0f172a;
  --text-dim: #4b5570;
  --muted: #7a8395;
  --accent: #2563eb;
  --accent-2: #1d4ed8;
  --accent-soft: #dbeafe;
  --success: #16a34a;
  --success-soft: #dcfce7;
  --danger: #dc2626;
  --danger-soft: #fee2e2;
  --warning: #d97706;
  --warning-soft: #fef3c7;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, monospace;
  --topbar-h: 60px;
  --bottomnav-h: 64px;
  --maxw: 980px;
}

[data-theme="dark"] {
  --bg: #0b1020;
  --surface: #131a30;
  --surface-2: #1b2440;
  --border: #283057;
  --text: #e7ecf7;
  --text-dim: #b5bdd4;
  --muted: #8a93b0;
  --accent: #60a5fa;
  --accent-2: #3b82f6;
  --accent-soft: rgba(59, 130, 246, 0.18);
  --success: #4ade80;
  --success-soft: rgba(74, 222, 128, 0.15);
  --danger: #f87171;
  --danger-soft: rgba(248, 113, 113, 0.15);
  --warning: #fbbf24;
  --warning-soft: rgba(251, 191, 36, 0.15);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
}

body.large-text { font-size: 18px; }
body.large-text .view { --base-fs: 18px; }

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.55;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #fff; padding: 12px 16px;
  border-radius: 0 0 var(--radius) 0; z-index: 999;
}
.skip-link:focus { left: 0; }

/* ---------- Top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 16px;
  padding: 10px 18px; height: var(--topbar-h);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 18px; color: var(--text);
  text-decoration: none;
}
.brand-mark { font-size: 22px; }
.brand-text span { color: var(--accent); }
.topnav { display: flex; gap: 4px; margin-left: 12px; }
.topnav a {
  padding: 8px 14px; border-radius: 999px; color: var(--text-dim);
  font-weight: 600; font-size: 14px;
}
.topnav a:hover { background: var(--surface-2); text-decoration: none; }
.topnav a.active {
  background: var(--accent-soft); color: var(--accent);
}
.topbar-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.streak-pill, .xp-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: 999px;
  background: var(--surface-2); border: 1px solid var(--border);
  font-weight: 700; font-size: 14px;
}
.streak-pill { color: #ea580c; }
[data-theme="dark"] .streak-pill { color: #fb923c; }
.xp-pill { color: var(--accent); }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 40px; height: 40px; padding: 0 10px;
  border-radius: 12px; background: var(--surface-2);
  border: 1px solid var(--border);
  font-size: 16px;
}
.icon-btn:hover { background: var(--accent-soft); }

@media (max-width: 720px) {
  .topnav { display: none; }
  .brand-text { display: none; }
  .topbar { padding: 8px 14px; gap: 8px; }
  .streak-pill, .xp-pill { font-size: 13px; padding: 5px 10px; }
}

/* ---------- Bottom nav (mobile) ---------- */
.bottomnav {
  display: none;
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 50;
  height: var(--bottomnav-h);
  background: color-mix(in srgb, var(--surface) 96%, transparent);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom, 0);
}
.bottomnav a {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px; color: var(--text-dim); padding: 6px 0; text-decoration: none;
}
.bottomnav a span { font-size: 22px; }
.bottomnav a label { font-size: 11px; font-weight: 600; cursor: pointer; }
.bottomnav a.active { color: var(--accent); }
@media (max-width: 720px) {
  .bottomnav { display: flex; }
  main.main { padding-bottom: calc(var(--bottomnav-h) + env(safe-area-inset-bottom, 0)); }
}

/* ---------- Main + view container ---------- */
.main { padding: 20px 18px 40px; }
.view { max-width: var(--maxw); margin: 0 auto; }

h1, h2, h3 { line-height: 1.2; margin: 0 0 12px; }
h1 { font-size: 28px; letter-spacing: -0.01em; }
h2 { font-size: 22px; }
h3 { font-size: 17px; }
p { margin: 0 0 12px; color: var(--text-dim); }

/* ---------- Cards / Surfaces ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-sm);
}
.card + .card { margin-top: 16px; }
.card.tight { padding: 16px; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
}
.row { display: flex; gap: 12px; align-items: center; }
.row.wrap { flex-wrap: wrap; }
.spacer { flex: 1; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 12px 22px; min-height: 44px;
  background: var(--accent); color: #fff;
  border-radius: 12px; font-weight: 700; font-size: 15px;
  transition: transform 0.06s ease, background 0.15s ease, box-shadow 0.15s ease;
  box-shadow: var(--shadow-sm);
}
.btn:hover { background: var(--accent-2); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn.secondary { background: var(--surface-2); color: var(--text); border: 1px solid var(--border); }
.btn.secondary:hover { background: var(--accent-soft); color: var(--accent); }
.btn.ghost { background: transparent; color: var(--accent); }
.btn.ghost:hover { background: var(--accent-soft); }
.btn.danger { background: var(--danger); }
.btn.success { background: var(--success); }
.btn.lg { padding: 14px 28px; font-size: 16px; min-height: 52px; }
.btn.sm { padding: 8px 14px; min-height: 36px; font-size: 13px; }
.btn.block { width: 100%; }

/* ---------- Home dashboard ---------- */
.hero {
  background: linear-gradient(135deg, var(--accent), #4f46e5);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-md);
  margin-bottom: 18px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; right: -50px; bottom: -50px;
  width: 220px; height: 220px; border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}
.hero h1 { color: #fff; font-size: 26px; margin-bottom: 6px; }
.hero p { color: rgba(255, 255, 255, 0.88); margin: 0; }
.hero .row { margin-top: 16px; position: relative; z-index: 1; }
.hero .btn { background: #fff; color: var(--accent-2); }
.hero .btn:hover { background: #f1f5f9; }

.ringwrap {
  position: relative; width: 132px; height: 132px;
  display: inline-flex; align-items: center; justify-content: center;
}
.ring { width: 132px; height: 132px; transform: rotate(-90deg); }
.ring-bg { stroke: var(--surface-2); stroke-width: 12; fill: none; }
.ring-fg {
  stroke: var(--accent); stroke-width: 12; fill: none;
  stroke-linecap: round; stroke-dasharray: 326.7; stroke-dashoffset: 326.7;
  transition: stroke-dashoffset 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.ring-label {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
}
.ring-pct { font-size: 28px; font-weight: 800; color: var(--text); }
.ring-label small { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; }

.stat {
  text-align: center; padding: 16px 12px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius);
}
.stat .v { font-size: 26px; font-weight: 800; color: var(--text); }
.stat .l { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; margin-top: 4px; }

.badge-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 10px;
}
.badge {
  text-align: center; padding: 14px 8px; border-radius: var(--radius);
  background: var(--surface-2); border: 1px solid var(--border);
  opacity: 0.45; filter: grayscale(0.7);
}
.badge.earned { opacity: 1; filter: none; background: var(--accent-soft); border-color: var(--accent); }
.badge .icon { font-size: 28px; line-height: 1; }
.badge .name { font-size: 11px; font-weight: 700; color: var(--text-dim); margin-top: 6px; }

/* ---------- Chapter map ---------- */
.chapter-list { display: grid; gap: 12px; }
.chapter {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 18px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius);
  text-decoration: none; color: inherit; transition: transform 0.1s ease, border-color 0.1s ease;
}
.chapter:hover { transform: translateY(-1px); border-color: var(--accent); text-decoration: none; }
.chapter .num {
  width: 40px; height: 40px; border-radius: 12px;
  background: var(--surface-2); color: var(--text-dim);
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 16px; flex: 0 0 auto;
}
.chapter.done .num { background: var(--success-soft); color: var(--success); }
.chapter.done .num::after { content: "✓"; font-weight: 900; }
.chapter.done .num span { display: none; }
.chapter .body { flex: 1; min-width: 0; }
.chapter .title { font-weight: 700; color: var(--text); margin-bottom: 2px; }
.chapter .meta { font-size: 13px; color: var(--muted); }
.chapter .chev { color: var(--muted); font-size: 22px; }
.progressbar {
  height: 6px; background: var(--surface-2); border-radius: 99px; overflow: hidden;
  margin-top: 6px;
}
.progressbar > span {
  display: block; height: 100%; background: var(--accent);
  border-radius: 99px; transition: width 0.4s;
}

/* ---------- Lesson / quiz player ---------- */
.player-header {
  display: flex; align-items: center; gap: 12px; margin-bottom: 18px;
}
.player-header .pbar {
  flex: 1; height: 10px; background: var(--surface-2); border-radius: 99px; overflow: hidden;
}
.player-header .pbar > span {
  display: block; height: 100%; background: var(--accent);
  border-radius: 99px; transition: width 0.3s;
}

.lesson-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 32px;
  min-height: 280px; box-shadow: var(--shadow-md);
  animation: slideUp 0.32s ease;
}
.lesson-card h2 { font-size: 22px; }
.lesson-card .kicker {
  text-transform: uppercase; letter-spacing: 0.1em;
  font-size: 12px; font-weight: 700; color: var(--accent); margin-bottom: 6px;
}
.lesson-card .body p { font-size: 16px; color: var(--text); }
.lesson-card .body ul { color: var(--text); padding-left: 20px; }
.lesson-card .body li { margin: 6px 0; }
.lesson-card .tip {
  margin-top: 18px; padding: 14px 16px;
  background: var(--warning-soft); border-left: 4px solid var(--warning);
  border-radius: var(--radius-sm); color: var(--text);
}
.lesson-card .tip strong { color: var(--warning); }
.lesson-card .key {
  margin-top: 14px; padding: 12px 14px;
  background: var(--accent-soft); border-radius: var(--radius-sm); color: var(--text);
  font-weight: 600;
}

.player-foot {
  display: flex; gap: 10px; margin-top: 18px; align-items: center;
}
.player-foot .spacer { flex: 1; }

/* ---------- Quiz ---------- */
.question h3 {
  font-size: 20px; margin-bottom: 16px; color: var(--text);
}
.options { display: grid; gap: 10px; }
.opt {
  display: flex; gap: 12px; align-items: center;
  padding: 14px 16px; min-height: 56px;
  background: var(--surface); border: 2px solid var(--border);
  border-radius: 14px; cursor: pointer;
  text-align: left; font-size: 15px; color: var(--text);
  transition: background 0.12s, border-color 0.12s, transform 0.06s;
}
.opt:hover:not(.locked) { border-color: var(--accent); background: var(--accent-soft); }
.opt.locked { cursor: default; }
.opt .letter {
  width: 28px; height: 28px; flex: 0 0 auto; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--surface-2); color: var(--text-dim);
  font-weight: 700; font-size: 14px;
}
.opt.correct { border-color: var(--success); background: var(--success-soft); }
.opt.correct .letter { background: var(--success); color: #fff; }
.opt.wrong { border-color: var(--danger); background: var(--danger-soft); }
.opt.wrong .letter { background: var(--danger); color: #fff; }
.opt.faded { opacity: 0.55; }

.feedback {
  margin-top: 18px; padding: 16px 18px;
  border-radius: var(--radius); border-left: 4px solid var(--accent);
  background: var(--surface-2); animation: slideUp 0.25s ease;
}
.feedback.ok { border-left-color: var(--success); }
.feedback.bad { border-left-color: var(--danger); }
.feedback strong { display: block; font-size: 16px; margin-bottom: 6px; }
.feedback strong.ok-text { color: var(--success); }
.feedback strong.bad-text { color: var(--danger); }
.feedback p { margin: 0; color: var(--text); }
.feedback cite { display: block; margin-top: 8px; font-size: 12px; color: var(--muted); font-style: normal; }

/* ---------- Results screen ---------- */
.result-hero {
  text-align: center; padding: 36px 18px;
  background: var(--surface); border-radius: var(--radius-lg);
  border: 1px solid var(--border); box-shadow: var(--shadow-md);
}
.result-hero .emoji { font-size: 64px; line-height: 1; }
.result-hero h1 { font-size: 32px; margin-top: 12px; }
.result-hero .sub { color: var(--text-dim); font-size: 16px; }
.result-hero.pass h1 { color: var(--success); }
.result-hero.fail h1 { color: var(--danger); }

.topic-chart { display: grid; gap: 10px; }
.topic-row { display: grid; grid-template-columns: 1fr 60px; align-items: center; gap: 10px; }
.topic-row .bar {
  height: 18px; background: var(--surface-2); border-radius: 99px; overflow: hidden;
}
.topic-row .bar > span {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--accent), #4f46e5); border-radius: 99px;
}
.topic-row .bar.bad > span { background: linear-gradient(90deg, var(--danger), #f97316); }
.topic-row .bar.mid > span { background: linear-gradient(90deg, var(--warning), #fbbf24); }
.topic-row .label { display: flex; justify-content: space-between; gap: 8px; font-size: 13px; color: var(--text); }
.topic-row .label small { color: var(--muted); }
.topic-row .pct { text-align: right; font-weight: 700; font-size: 14px; color: var(--text); }

/* ---------- Signs ---------- */
.signs-controls { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.chip {
  padding: 7px 14px; border-radius: 999px; font-size: 13px; font-weight: 600;
  background: var(--surface); border: 1px solid var(--border);
  color: var(--text-dim); cursor: pointer;
}
.chip:hover { background: var(--surface-2); }
.chip.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.signs-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 14px;
}
.sign-tile {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 10px; text-align: center;
  cursor: pointer; transition: transform 0.1s, border-color 0.1s;
}
.sign-tile:hover { transform: translateY(-2px); border-color: var(--accent); }
.sign-tile .svg-wrap { display: flex; justify-content: center; align-items: center; height: 110px; }
.sign-tile svg { max-width: 110px; max-height: 110px; }
.sign-tile .label { font-size: 13px; font-weight: 600; color: var(--text-dim); margin-top: 8px; }
.sign-tile.mastered { border-color: var(--success); }
.sign-tile.mastered .label::after { content: " ✓"; color: var(--success); }

.flashcard {
  perspective: 1200px;
  margin: 0 auto;
  max-width: 360px;
}
.flashcard-inner {
  position: relative; width: 100%; padding-bottom: 120%;
  transition: transform 0.55s; transform-style: preserve-3d;
  cursor: pointer;
}
.flashcard.flipped .flashcard-inner { transform: rotateY(180deg); }
.flashcard-face {
  position: absolute; inset: 0;
  border-radius: var(--radius-lg);
  background: var(--surface); border: 1px solid var(--border);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 24px; text-align: center;
  box-shadow: var(--shadow-md);
  -webkit-backface-visibility: hidden; backface-visibility: hidden;
}
.flashcard-face.back { transform: rotateY(180deg); }
.flashcard-face svg { max-width: 70%; max-height: 60%; }
.flashcard-face h3 { margin: 12px 0 6px; }
.flashcard-face p { color: var(--text-dim); font-size: 14px; }
.flashcard-face .mnemonic {
  margin-top: 14px; padding: 10px 14px; background: var(--accent-soft);
  color: var(--accent); border-radius: 10px; font-size: 13px; font-weight: 600;
}

/* ---------- Exam ---------- */
.exam-header {
  display: flex; align-items: center; gap: 12px; margin-bottom: 16px;
  padding: 14px 18px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius);
}
.exam-header .timer {
  font-family: var(--font-mono); font-weight: 700; font-size: 18px;
  color: var(--text);
  background: var(--surface-2); padding: 6px 14px; border-radius: 10px;
}
.exam-header .timer.warn { background: var(--warning-soft); color: var(--warning); }
.exam-header .timer.danger { background: var(--danger-soft); color: var(--danger); }
.exam-progress { flex: 1; height: 8px; background: var(--surface-2); border-radius: 99px; overflow: hidden; }
.exam-progress > span { display: block; height: 100%; background: var(--accent); transition: width 0.3s; }

.exam-nav-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
  gap: 6px; margin-bottom: 16px;
}
.exam-nav-grid button {
  aspect-ratio: 1; border-radius: 8px;
  background: var(--surface-2); color: var(--text-dim);
  font-weight: 700; font-size: 13px;
  border: 2px solid transparent;
}
.exam-nav-grid button.answered { background: var(--accent-soft); color: var(--accent); }
.exam-nav-grid button.current { border-color: var(--accent); }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 100px; transform: translateX(-50%) translateY(40px);
  background: var(--text); color: var(--bg);
  padding: 12px 22px; border-radius: 999px; font-weight: 600;
  box-shadow: var(--shadow-lg);
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 100; max-width: 90vw; text-align: center;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

@media (max-width: 720px) {
  .toast { bottom: calc(var(--bottomnav-h) + 16px); }
}

/* ---------- Empty state ---------- */
.empty {
  text-align: center; padding: 60px 20px;
  color: var(--text-dim);
}
.empty .icon { font-size: 64px; margin-bottom: 12px; }
.empty h3 { color: var(--text); margin-bottom: 6px; }

/* ---------- Animations ---------- */
@keyframes slideUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pop {
  0% { transform: scale(0.85); opacity: 0; }
  60% { transform: scale(1.06); opacity: 1; }
  100% { transform: scale(1); }
}
.pop { animation: pop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1); }
.fade-in { animation: slideUp 0.25s ease; }

/* ---------- Utilities ---------- */
.muted { color: var(--muted); }
.small { font-size: 13px; }
.center { text-align: center; }
.mt-0 { margin-top: 0 !important; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-0 { margin-bottom: 0 !important; }
.hide { display: none !important; }

@media (max-width: 480px) {
  .lesson-card { padding: 22px; }
  .hero { padding: 22px; }
  .hero h1 { font-size: 22px; }
  h1 { font-size: 24px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ---------- Bengali / bilingual ---------- */
body.lang-bn {
  font-family: "Noto Sans Bengali", -apple-system, BlinkMacSystemFont, "Hind Siliguri", "Kohinoor Bangla", "Bangla Sangam MN", "Segoe UI", sans-serif;
}
body.lang-bn .brand-text span { display: none; }
.bn {
  font-family: "Noto Sans Bengali", -apple-system, BlinkMacSystemFont, "Hind Siliguri", "Kohinoor Bangla", "Bangla Sangam MN", sans-serif;
}
.lang-btn {
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.05em;
  min-width: 44px;
  padding: 0 8px;
}

/* Bilingual card layout */
.bili {
  display: grid;
  gap: 14px;
}
.bili-block {
  position: relative;
}
.bili-block.bn {
  padding: 14px 16px;
  background: var(--accent-soft);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
}
.bili-block.bn p, .bili-block.bn h2, .bili-block.bn h3 {
  font-family: "Noto Sans Bengali", "Hind Siliguri", "Kohinoor Bangla", "Bangla Sangam MN", sans-serif;
}
.bili-block .lang-pill {
  display: inline-block;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--text-dim);
  margin-bottom: 8px;
}
.bili-block.bn .lang-pill { background: var(--accent); color: #fff; }

/* TTS button row */
.tts-row {
  display: none;
}
.tts-btn { display: none; }
.audio-warn { display: none; }

/* Lang toggle: text-only toggle inside a card (for cards that show both langs) */
.lang-tabs-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
  align-items: center;
}
.lang-tabs {
  display: inline-flex;
  background: var(--surface-2);
  border-radius: 99px;
  padding: 3px;
  gap: 2px;
}
.lang-tabs button {
  border: none;
  background: transparent;
  padding: 6px 14px;
  border-radius: 99px;
  font-weight: 700;
  font-size: 13px;
  color: var(--text-dim);
  cursor: pointer;
  font-family: inherit;
}
.lang-tabs button.active {
  background: var(--accent);
  color: #fff;
}
.lang-tabs button.bn { font-family: "Noto Sans Bengali", sans-serif; }

/* Audio unavailable hint */
.audio-warn { display: none; }