/* Voice Reset - calm dark-first theme */
:root {
  --bg: #0a111f;
  --surface: #121b2e;
  --surface-2: #1a2540;
  --line: #24334f;
  --text: #e9eef7;
  --dim: #94a5bd;
  --teal: #3ed6c2;
  --teal-soft: rgba(62, 214, 194, 0.16);
  --amber: #f4c877;
  --coral: #f0707a;
  --green: #5bd991;
  --on-teal: #06251f;
  --shadow: 0 10px 30px rgba(2, 6, 16, 0.45);
  --radius: 18px;
  --radius-sm: 12px;
  --tabbar-h: 64px;
  --ease: cubic-bezier(0.22, 0.9, 0.35, 1);
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #eef2f8;
    --surface: #ffffff;
    --surface-2: #f2f5fb;
    --line: #d8e0ec;
    --text: #182338;
    --dim: #556682;
    --teal: #0a7a70; /* dark enough for 4.5:1 link text on light surfaces */
    --teal-soft: rgba(13, 148, 136, 0.13);
    --amber: #b45309;
    --coral: #d63b47;
    --green: #15803d;
    --on-teal: #ffffff;
    --shadow: 0 10px 24px rgba(23, 35, 56, 0.10);
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  min-height: 100dvh;
  overscroll-behavior-y: none;
  -webkit-tap-highlight-color: transparent;
}
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; touch-action: manipulation; }
a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 3px solid var(--teal); outline-offset: 2px; border-radius: 6px; }

.ic { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; flex: none; }

/* ---------- Layout ---------- */
#main {
  max-width: 640px;
  margin: 0 auto;
  padding: max(14px, env(safe-area-inset-top)) 18px calc(var(--tabbar-h) + env(safe-area-inset-bottom) + 24px);
}
.view > * + * { margin-top: 14px; }

h1 { font-size: 27px; font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: 20px; font-weight: 650; letter-spacing: -0.01em; }
h3 { font-size: 17px; font-weight: 650; }
.muted { color: var(--dim); }
.small { font-size: 14px; }

.hero { padding: 8px 2px 2px; }
.hero .sub { color: var(--dim); margin-top: 2px; }
.week-note {
  background: var(--teal-soft);
  border: 1px solid transparent;
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 15px;
}

/* ---------- Cards ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}
.session-card {
  display: flex; align-items: center; gap: 14px;
  width: 100%; text-align: left;
  transition: transform 150ms var(--ease), border-color 150ms;
}
.session-card:active { transform: scale(0.98); }
.session-card .icon-chip { width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; background: var(--teal-soft); color: var(--teal); }
.session-card .body { flex: 1; min-width: 0; }
.session-card .name { font-weight: 650; }
.session-card .blurb { color: var(--dim); font-size: 14px; margin-top: 1px; }
.session-card .status { color: var(--dim); display: grid; place-items: center; }
.session-card.is-done { border-color: var(--teal); }
.session-card.is-done .status { color: var(--green); }

.chip-row { display: flex; gap: 10px; flex-wrap: wrap; }
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  min-height: 44px; padding: 8px 16px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 999px;
  font-size: 15px; font-weight: 550;
  transition: transform 150ms var(--ease);
}
.chip:active { transform: scale(0.96); }
.chip .ic { width: 18px; height: 18px; color: var(--teal); }
.chip .count { color: var(--dim); font-variant-numeric: tabular-nums; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 12px 20px;
  border-radius: 14px; font-weight: 650; font-size: 16px;
  background: var(--surface-2); border: 1px solid var(--line);
  transition: transform 150ms var(--ease), filter 150ms;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--teal); border-color: var(--teal); color: var(--on-teal); }
.btn-primary:active { filter: brightness(1.08); }
.btn-danger { color: var(--coral); border-color: var(--coral); background: transparent; }
.btn-block { width: 100%; }
.btn-icon {
  width: 46px; height: 46px; border-radius: 50%;
  display: grid; place-items: center;
  color: var(--dim);
  transition: background 150ms, color 150ms, transform 150ms var(--ease);
}
.btn-icon:active { transform: scale(0.92); }
.btn-icon[aria-pressed="true"] { color: var(--teal); background: var(--teal-soft); }
.btn-round {
  width: 68px; height: 68px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--teal); color: var(--on-teal);
  box-shadow: 0 8px 24px rgba(62, 214, 194, 0.35);
  transition: transform 150ms var(--ease);
}
.btn-round:active { transform: scale(0.94); }
.btn-round .ic { width: 28px; height: 28px; }

/* ---------- Tab bar ---------- */
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
  display: flex; justify-content: space-around; align-items: stretch;
  height: calc(var(--tabbar-h) + env(safe-area-inset-bottom));
  padding: 6px 8px env(safe-area-inset-bottom);
  padding-left: max(8px, env(safe-area-inset-left));
  padding-right: max(8px, env(safe-area-inset-right));
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border-top: 1px solid var(--line);
}
.tab {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px;
  color: var(--dim); font-size: 11.5px; font-weight: 600; letter-spacing: 0.02em;
  border-radius: 12px; max-width: 120px; margin: 0 auto;
}
.tab .ic { width: 23px; height: 23px; }
.tab.is-active { color: var(--teal); }

/* ---------- Library ---------- */
.cat-title { margin: 20px 2px 10px; display: flex; align-items: baseline; gap: 8px; }
.cat-title .muted { font-size: 13px; }
.hscroll {
  display: grid; grid-auto-flow: column; grid-auto-columns: 78%;
  gap: 12px; overflow-x: auto; padding: 2px 2px 10px;
  scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.hscroll::-webkit-scrollbar { display: none; }
@media (min-width: 560px) { .hscroll { grid-auto-columns: 46%; } }
.ex-card {
  scroll-snap-align: start;
  display: flex; flex-direction: column; gap: 10px; text-align: left;
  min-height: 128px;
}
.ex-card .top { display: flex; align-items: center; gap: 10px; }
.ex-card .icon-chip { width: 38px; height: 38px; border-radius: 12px; display: grid; place-items: center; background: var(--teal-soft); color: var(--teal); }
.ex-card .name { font-weight: 650; line-height: 1.25; }
.ex-card .tagline { color: var(--dim); font-size: 14px; flex: 1; }
.ex-card .meta { display: flex; align-items: center; gap: 8px; color: var(--dim); font-size: 13px; font-variant-numeric: tabular-nums; }
.ex-card.is-locked { opacity: 0.55; }
.lock-note { font-size: 12.5px; color: var(--amber); }

/* ---------- Sheet (exercise detail) ---------- */
.scrim {
  position: fixed; inset: 0; z-index: 60;
  background: rgba(4, 8, 18, 0.55);
  opacity: 0; transition: opacity 200ms;
}
.scrim.show { opacity: 1; }
.scrim-solid { background: rgba(4, 8, 18, 0.72); z-index: 80; }
.sheet {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 70;
  max-width: 640px; margin: 0 auto;
  max-height: 88dvh; overflow-y: auto;
  background: var(--surface);
  border-radius: 22px 22px 0 0;
  border: 1px solid var(--line); border-bottom: 0;
  padding: 10px 20px calc(20px + env(safe-area-inset-bottom));
  transform: translateY(100%); transition: transform 260ms var(--ease);
}
.sheet.show { transform: translateY(0); }
.sheet-grab { width: 42px; height: 5px; border-radius: 3px; background: var(--line); margin: 4px auto 12px; }
.sheet-close { position: absolute; top: 12px; right: 12px; background: var(--surface-2); }
.sheet h2 { display: flex; align-items: center; gap: 10px; }
.sheet .tagline { color: var(--dim); margin-top: 4px; }
.sheet section { margin-top: 18px; }
.sheet section h3 { margin-bottom: 8px; color: var(--teal); font-size: 14px; text-transform: uppercase; letter-spacing: 0.08em; }
.sheet ol, .sheet ul { padding-left: 22px; display: grid; gap: 6px; }
.sheet .why { color: var(--text); }
.sheet .cite { font-size: 12.5px; vertical-align: super; }
.sheet .dose { background: var(--surface-2); border-radius: var(--radius-sm); padding: 10px 14px; font-size: 15px; }
.sheet .start-wrap { position: sticky; bottom: 0; padding-top: 14px; background: linear-gradient(transparent, var(--surface) 40%); }

/* ---------- Player ---------- */
.player {
  position: fixed; inset: 0; z-index: 90;
  display: flex; flex-direction: column;
  background:
    radial-gradient(120% 70% at 50% -10%, rgba(62, 214, 194, 0.08), transparent 60%),
    var(--bg);
}
.player-top {
  display: flex; align-items: center; gap: 8px;
  padding: max(10px, env(safe-area-inset-top)) 12px 6px;
  padding-left: max(12px, env(safe-area-inset-left));
  padding-right: max(12px, env(safe-area-inset-right));
}
.player-titles { flex: 1; text-align: center; min-width: 0; }
.player-session { font-size: 12.5px; color: var(--dim); text-transform: uppercase; letter-spacing: 0.1em; }
.player-exercise { font-weight: 650; font-size: 17px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.stage { position: relative; flex: 1; min-height: 0; margin: 4px 14px; }
#stage-canvas { position: absolute; inset: 0; width: 100%; height: 100%; border-radius: var(--radius); }
.stage-overlay {
  position: absolute; inset: 0; pointer-events: none;
  display: flex; flex-direction: column; align-items: center; justify-content: flex-end;
  padding: 18px; text-align: center;
}
.cue { font-size: 21px; font-weight: 650; text-shadow: 0 2px 12px rgba(4, 8, 18, 0.5); }
.cue-sub { font-size: 15px; color: var(--dim); margin-top: 2px; min-height: 22px; }
.countdown {
  position: absolute; inset: 0; display: grid; place-items: center;
  font-size: 120px; font-weight: 750; color: var(--teal);
  font-variant-numeric: tabular-nums;
  text-shadow: 0 6px 40px rgba(62, 214, 194, 0.35);
}
.bignum {
  position: absolute; top: 12%; left: 0; right: 0;
  font-size: 64px; font-weight: 750; color: var(--text);
  font-variant-numeric: tabular-nums;
  text-shadow: 0 2px 18px rgba(4, 8, 18, 0.6);
}
.bignum .unit { font-size: 22px; color: var(--dim); font-weight: 600; }

.paused-veil {
  position: absolute; inset: 0; z-index: 5;
  display: grid; place-items: center;
  background: rgba(4, 8, 18, 0.62);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  border-radius: var(--radius);
}
.paused-box { text-align: center; display: grid; gap: 14px; justify-items: center; }
.paused-box p { font-size: 20px; font-weight: 650; }

.player-bottom { padding: 8px 18px calc(12px + env(safe-area-inset-bottom)); display: grid; gap: 8px; }
.seg-row { display: flex; justify-content: space-between; align-items: baseline; }
.seg-label { font-weight: 650; }
.seg-time { font-variant-numeric: tabular-nums; color: var(--teal); font-weight: 700; font-size: 22px; }
.bar { height: 8px; border-radius: 4px; background: var(--surface-2); overflow: hidden; }
.bar-thin { height: 5px; flex: 1; }
.bar-fill { height: 100%; width: 0%; background: var(--teal); border-radius: 4px; transition: width 300ms linear; }
.total-row { display: flex; align-items: center; gap: 10px; color: var(--dim); font-size: 13px; }
.total-time { font-variant-numeric: tabular-nums; }
.controls { display: flex; align-items: center; justify-content: center; gap: 34px; padding-top: 4px; }

/* ---------- Mixer ---------- */
.mixer {
  position: absolute; bottom: calc(110px + env(safe-area-inset-bottom)); left: 16px; right: 16px; z-index: 95;
  max-width: 420px; margin: 0 auto;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px; display: grid; gap: 12px;
}
.mixer label { display: grid; gap: 6px; font-size: 14px; color: var(--dim); }
.mixer input[type="range"] { width: 100%; accent-color: var(--teal); height: 30px; }
.mixer-tracks { display: flex; gap: 8px; flex-wrap: wrap; }
.mixer-tracks .chip { min-height: 44px; padding: 6px 14px; font-size: 13.5px; }
.mixer-tracks .chip.is-on { border-color: var(--teal); color: var(--teal); }
.mixer-note { font-size: 12.5px; color: var(--dim); }

/* ---------- Modal ---------- */
.modal {
  position: fixed; inset: 0; z-index: 85;
  display: grid; place-items: center; padding: 20px;
  pointer-events: none;
}
.modal-body {
  pointer-events: auto;
  width: min(480px, 100%);
  max-height: 86dvh; overflow-y: auto;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 20px; padding: 22px;
  box-shadow: var(--shadow);
  display: grid; gap: 14px;
}
.modal-body h2 { display: flex; gap: 10px; align-items: center; }
.modal-body .actions { display: grid; gap: 10px; margin-top: 6px; }
.safety-list { display: grid; gap: 10px; padding-left: 22px; }
.calib-num {
  font-size: 44px; font-weight: 750; text-align: center;
  color: var(--teal); font-variant-numeric: tabular-nums; min-height: 60px;
}
.calib-meter { height: 10px; border-radius: 5px; background: var(--surface-2); overflow: hidden; }
.calib-meter .fill { height: 100%; width: 0%; background: var(--teal); transition: width 120ms linear; }

/* ---------- Progress ---------- */
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 7px; }
.cal-cell { aspect-ratio: 1; border-radius: 7px; background: var(--surface-2); position: relative; }
.cal-cell.l1 { background: color-mix(in srgb, var(--teal) 30%, var(--surface-2)); }
.cal-cell.l2 { background: color-mix(in srgb, var(--teal) 60%, var(--surface-2)); }
.cal-cell.l3 { background: var(--teal); }
.cal-cell.today { outline: 2px solid var(--amber); outline-offset: 1px; }
.cal-legend { display: flex; gap: 14px; margin-top: 10px; color: var(--dim); font-size: 12.5px; align-items: center; }
.cal-legend .dot { width: 12px; height: 12px; border-radius: 4px; display: inline-block; margin-right: 5px; vertical-align: -1px; }
.stat-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.stat { text-align: center; padding: 14px 8px; }
.stat .num { font-size: 30px; font-weight: 750; color: var(--text); font-variant-numeric: tabular-nums; }
.stat .lbl { color: var(--dim); font-size: 13px; margin-top: 2px; }
.spark { width: 100%; height: 90px; }
.spark .line { fill: none; stroke: var(--teal); stroke-width: 2.5; stroke-linecap: round; }
.spark .area { fill: var(--teal-soft); stroke: none; }
.spark .pt { fill: var(--teal); }
.spark .axis { stroke: var(--line); stroke-width: 1; }
.spark-note { color: var(--dim); font-size: 13px; margin-top: 6px; }
.log-list { display: grid; gap: 8px; }
.log-item { display: flex; justify-content: space-between; gap: 10px; padding: 10px 14px; font-size: 14.5px; }
.log-item .when { color: var(--dim); font-variant-numeric: tabular-nums; }

/* ---------- Info ---------- */
.info-block h2 { margin-bottom: 8px; }
.cite-list { display: grid; gap: 8px; padding-left: 20px; font-size: 14px; }
.deploy-steps { padding-left: 22px; display: grid; gap: 8px; font-size: 15px; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: calc(var(--tabbar-h) + env(safe-area-inset-bottom) + 18px);
  transform: translateX(-50%); z-index: 120;
  background: var(--surface-2); color: var(--text);
  border: 1px solid var(--line); border-radius: 12px;
  padding: 12px 18px; font-size: 15px; box-shadow: var(--shadow);
  max-width: 90vw; text-align: center;
}

/* ---------- Motion ---------- */
.view { animation: rise 240ms var(--ease); }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}