:root {
  --bg: #f7f4ee;
  --surface: #ffffff;
  --surface-2: #f0ebe1;
  --text: #1f2933;
  --muted: #6b7280;
  --muted-soft: #a8adb5;
  --primary: #0f766e;
  --primary-ink: #ffffff;
  --accent: #c98a00;
  --good: #16a34a;
  --warn: #e07b00;
  --danger: #c0392b;
  --border: #e6dfd2;
  --grid: rgba(31, 41, 51, 0.14);
  --grid-soft: rgba(31, 41, 51, 0.08);
  --band: rgba(22, 163, 74, 0.14);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.05), 0 4px 16px rgba(0, 0, 0, 0.04);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121614;
    --surface: #1b211f;
    --surface-2: #232b28;
    --text: #e8ece9;
    --muted: #9aa5a0;
    --muted-soft: #66706b;
    --primary: #2bb3a6;
    --primary-ink: #06201d;
    --accent: #f0b429;
    --good: #4ade80;
    --warn: #fbbf24;
    --danger: #f87171;
    --border: #2c3532;
    --grid: rgba(232, 236, 233, 0.16);
    --grid-soft: rgba(232, 236, 233, 0.08);
    --band: rgba(74, 222, 128, 0.14);
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Vazirmatn, Tahoma, sans-serif;
  line-height: 1.7;
  -webkit-tap-highlight-color: transparent;
}

body { padding-bottom: calc(76px + env(safe-area-inset-bottom)); }
body.no-tabbar { padding-bottom: 24px; }
body.no-tabbar .tabbar { display: none; }

.wrap {
  max-width: 560px;
  margin: 0 auto;
  padding: 16px 16px 24px;
}

h1, h2, h3 { line-height: 1.4; margin: 0 0 8px; }
h1 { font-size: 1.6rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.05rem; }
p { margin: 0 0 8px; }
a { color: var(--primary); text-decoration: none; }

.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.hidden { display: none !important; }
.good { color: var(--good); }
.warn { color: var(--warn); }
.center { text-align: center; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  margin: 12px 0;
  box-shadow: var(--shadow);
}

.eyebrow { color: var(--accent); font-weight: 700; font-size: 0.85rem; margin-bottom: 4px; }
.page-title { margin-top: 4px; }
.section-title { margin: 20px 0 4px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 48px;
  padding: 10px 18px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  text-align: center;
}
.btn:active { transform: scale(0.98); }
.btn.primary { background: var(--primary); color: var(--primary-ink); border-color: transparent; }
.btn.danger { color: var(--danger); }
.btn.small { min-height: 36px; padding: 4px 12px; font-size: 0.9rem; }
.btn.block { display: flex; width: 100%; margin: 12px 0; }
.row { display: flex; gap: 10px; margin: 12px 0; }
.grow { flex: 1; }

.hero { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 8px 0 4px; }
.hero h1 { color: var(--primary); margin: 0; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 12px 0; }
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px 6px;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.stat b { font-size: 1.4rem; color: var(--primary); }
.stat b.sm { font-size: 0.95rem; }
.stat span { font-size: 0.8rem; color: var(--muted); }

.today h2 { margin-bottom: 2px; }

.lessons { list-style: none; padding: 0; margin: 0; }
.lessons a {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 14px;
  margin: 8px 0;
}
.num {
  flex: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--surface-2);
  display: grid;
  place-items: center;
  font-weight: 700;
  color: var(--primary);
}
.li-text { flex: 1; display: flex; flex-direction: column; }
.badge {
  flex: none;
  background: var(--primary);
  color: var(--primary-ink);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 0.85rem;
  font-weight: 700;
}
.badge.done { background: var(--good); }

.tuner-link { display: flex; align-items: center; gap: 14px; color: var(--text); }
.big-icon { font-size: 2rem; }

.note-big { font-size: 2.6rem; font-weight: 800; color: var(--primary); line-height: 1.3; }
.latin { color: var(--muted); font-size: 0.9rem; direction: ltr; min-height: 1.4em; }
.status { font-weight: 700; margin-top: 6px; }
.status.listen { color: var(--accent); }
.status.sing { color: var(--primary); }
.countdown { font-size: 1.3rem; font-weight: 700; color: var(--accent); min-height: 1.6em; }
.live { text-align: center; min-height: 1.8em; }

.lane {
  display: block;
  width: 100%;
  height: 240px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  margin: 12px 0;
}
.lane.short { height: 180px; }

.meter { margin: 12px auto 4px; max-width: 320px; }
.meter-track {
  position: relative;
  height: 14px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
}
.meter-ok {
  position: absolute;
  left: 40%;
  width: 20%;
  top: 0;
  bottom: 0;
  background: var(--band);
}
.needle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 6px;
  margin-left: -3px;
  border-radius: 3px;
  background: var(--warn);
  transition: left 0.08s linear;
}
.needle.ok { background: var(--good); }
.needle.idle { opacity: 0.25; }
.meter-scale { display: flex; justify-content: space-between; font-size: 0.75rem; color: var(--muted); margin-top: 2px; }
.hold { height: 100%; width: 0; background: var(--good); transition: width 0.1s linear; }

.alert {
  background: color-mix(in srgb, var(--warn) 14%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--warn) 40%, transparent);
  border-radius: 12px;
  padding: 12px 14px;
  margin: 12px 0;
}

.steps { padding: 0; list-style: none; counter-reset: s; }
.steps li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 14px;
  margin: 8px 0;
  transition: border-color 0.2s;
}
.steps li.active { border-color: var(--primary); box-shadow: 0 0 0 2px color-mix(in srgb, var(--primary) 25%, transparent); }
.steps li.done { opacity: 0.55; }
.tips ul { margin: 0; padding-inline-start: 20px; }

.result .score { font-size: 3rem; font-weight: 800; color: var(--primary); text-align: center; }
.note-scores { list-style: none; padding: 0; margin: 8px 0 0; }
.note-scores li {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}
.note-scores li:last-child { border-bottom: 0; }

.chart { width: 100%; height: auto; direction: ltr; }
.chart .bar { fill: var(--primary); opacity: 0.55; }
.chart .bar-good { fill: var(--good); }
.chart .goal { stroke: var(--accent); stroke-dasharray: 4 4; }

.opt { display: flex; align-items: center; gap: 10px; padding: 8px 0; cursor: pointer; }
.opt input { width: 20px; height: 20px; accent-color: var(--primary); }

.back { display: inline-block; margin-bottom: 4px; font-weight: 700; }

.welcome { text-align: center; padding-top: 24px; }
.welcome .card { text-align: start; }
.welcome h1 { color: var(--primary); font-size: 2rem; }
.logo { font-size: 3.5rem; }
.lead { font-size: 1.1rem; }

.tabbar {
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  display: flex;
  justify-content: space-around;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 6px 4px calc(6px + env(safe-area-inset-bottom));
  z-index: 10;
}
.tabbar a {
  flex: 1;
  max-width: 140px;
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--muted);
  font-size: 0.78rem;
  padding: 4px 0;
  border-radius: 10px;
}
.tabbar a .ti { font-size: 1.3rem; line-height: 1.3; }
.tabbar a.active { color: var(--primary); font-weight: 700; }