:root {
  --bg: #0a0a0a;
  --fg: #f2f2f2;
  --muted: #888;
  --panel: #161616;
  --border: #222;
  --work: #b91c1c;
  --work-deep: #450a0a;
  --rest: #166534;
  --rest-deep: #052e16;
  --warmup: #1e3a8a;
  --warmup-deep: #0b1530;
  --done: #7c3aed;
  --done-deep: #1e1233;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
  touch-action: manipulation;
}

body {
  display: flex;
  min-height: 100vh;
  min-height: 100dvh;
  padding:
    env(safe-area-inset-top)
    env(safe-area-inset-right)
    env(safe-area-inset-bottom)
    env(safe-area-inset-left);
}

.view {
  display: none;
  flex: 1;
  flex-direction: column;
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
}

body[data-view="list"] #view-list { display: flex; }
body[data-view="run"] #view-run { display: flex; }

/* ---------- List view ---------- */

.list-header {
  padding: 2rem 1.25rem 1rem;
}

.list-header h1 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.workout-list {
  list-style: none;
  padding: 0.5rem 1rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.workout-list li button {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.25rem;
  background: var(--panel);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 14px;
  font-size: 1.25rem;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  transition: transform 0.05s ease, background 0.15s ease;
}

.workout-list li button:active {
  transform: scale(0.99);
  background: #1e1e1e;
}

.workout-list .wk-name {
  flex: 1;
  letter-spacing: 0.02em;
}

.workout-list .wk-time {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-size: 1rem;
  font-weight: 600;
}

.workout-list .wk-chevron {
  color: var(--muted);
  font-size: 1.5rem;
  line-height: 1;
}

/* ---------- Run view ---------- */

#view-run {
  transition: background 0.25s ease;
}

#view-run[data-kind="idle"]       { background: var(--bg); }
#view-run[data-kind="timed"]      { background: linear-gradient(180deg, var(--warmup-deep), var(--bg)); }
#view-run[data-kind="flat-list"]  { background: linear-gradient(180deg, var(--work-deep), var(--bg)); }
#view-run[data-kind="work"]       { background: linear-gradient(180deg, var(--work-deep), var(--bg)); }
#view-run[data-kind="rest"]       { background: linear-gradient(180deg, var(--rest-deep), var(--bg)); }
#view-run[data-kind="rest-short"] { background: linear-gradient(180deg, var(--rest-deep), var(--bg)); }
#view-run[data-kind="done"]       { background: linear-gradient(180deg, var(--done-deep), var(--bg)); }

.run-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

.back-btn {
  appearance: none;
  background: transparent;
  color: var(--fg);
  border: none;
  font-size: 2rem;
  line-height: 1;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  cursor: pointer;
}
.back-btn:active { background: #222; }

.workout-name {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.run-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem 1.25rem 1rem;
  gap: 1rem;
  min-height: 0;
  overflow-y: auto;
}

.phase-chip {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,0.03);
  text-align: center;
}

.exercise {
  font-size: clamp(2.5rem, 11vw, 4.5rem);
  font-weight: 800;
  text-align: center;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.exercise-note {
  color: var(--muted);
  font-size: 1.1rem;
  text-align: center;
}

.exercise-list {
  list-style: none;
  padding: 0;
  width: 100%;
  max-width: 28rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.exercise-list li {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.9rem 1.1rem;
  font-weight: 700;
  font-size: 1.45rem;
  display: flex;
  gap: 0.9rem;
  align-items: center;
}

.exercise-list li::before {
  content: counter(item);
  counter-increment: item;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  min-width: 1.25rem;
}
.exercise-list { counter-reset: item; }

.timer {
  font-size: clamp(5rem, 22vw, 9rem);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.04em;
  line-height: 1;
  text-align: center;
}

#view-run[data-final="true"] .timer { color: #fca5a5; }

.next {
  color: var(--muted);
  font-size: 0.95rem;
  text-align: center;
  min-height: 1.2em;
}

.controls {
  display: flex;
  gap: 0.75rem;
  padding: 0.75rem 1rem calc(0.75rem + env(safe-area-inset-bottom));
  border-top: 1px solid var(--border);
  background: rgba(0,0,0,0.4);
}

.btn {
  flex: 1;
  appearance: none;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.1rem 1rem;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.05s ease, background 0.15s ease;
}

.btn:active { transform: scale(0.98); }

.btn-primary {
  background: var(--fg);
  color: #0a0a0a;
  border-color: var(--fg);
  flex: 2;
}

.btn-primary[data-state="running"] {
  background: #e5e7eb;
}

.btn-secondary {
  background: var(--panel);
  color: var(--fg);
}

.btn[disabled] { opacity: 0.4; cursor: not-allowed; }

/* Done state */
#view-run[data-kind="done"] .timer { display: none; }
#view-run[data-kind="done"] .next { display: none; }
#view-run[data-kind="done"] .exercise { font-size: clamp(2rem, 10vw, 4rem); }