:root {
  --ground: #EEF1F2;
  --surface: #FFFFFF;
  --sunk: #E4E9EA;
  --ink: #10171A;
  --ink-soft: #566A70;
  --ink-faint: #84979C;
  --accent: #0F6E68;
  --accent-ink: #0A4F4A;
  --accent-wash: #DCEBE9;
  --warn: #B4601A;
  --warn-wash: #F6E6D6;
  --line: #D4DDDF;
  --line-strong: #B6C4C7;
  --radius: 10px;
  --tap: 48px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ground: #0B1113; --surface: #141C1F; --sunk: #0F1719;
    --ink: #E7EEEF; --ink-soft: #9BADB2; --ink-faint: #708488;
    --accent: #52BFB3; --accent-ink: #8AD9CF; --accent-wash: #16302E;
    --warn: #DE9A55; --warn-wash: #2E2318;
    --line: #24302F; --line-strong: #354544;
  }
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0; padding: 0;
  background: var(--ground); color: var(--ink);
  font-size: 16px; line-height: 1.5;
  overscroll-behavior-y: contain;
}

body { padding-bottom: env(safe-area-inset-bottom); }

#app { max-width: 560px; margin: 0 auto; padding: 0 16px 96px; }

/* ---- typography ---- */
h1 { font-size: 1.5rem; line-height: 1.2; margin: 0 0 4px; letter-spacing: -.02em; }
h2 { font-size: 1.125rem; margin: 0 0 4px; letter-spacing: -.01em; }
h3 { font-size: .9375rem; margin: 0 0 2px; }
p { margin: 0 0 12px; }
.muted { color: var(--ink-soft); font-size: .875rem; }
.faint { color: var(--ink-faint); font-size: .8125rem; }
.mono { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }
.label {
  font-size: .6875rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--ink-faint); margin: 0 0 6px;
}

/* ---- chrome ---- */
header.bar {
  position: sticky; top: 0; z-index: 10;
  background: var(--ground); padding: 14px 0 10px;
  display: flex; align-items: center; gap: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}
header.bar .grow { flex: 1; min-width: 0; }
header.bar h1 { font-size: 1.125rem; margin: 0; }

.progress { height: 3px; background: var(--sunk); border-radius: 2px; overflow: hidden; margin-top: 10px; }
.progress > div { height: 100%; background: var(--accent); transition: width .3s ease; }

/* ---- cards ---- */
.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px; margin-bottom: 12px;
}
.card.tight { padding: 12px 14px; }
.card.accent { border-left: 3px solid var(--accent); }
.card.warn { border-left: 3px solid var(--warn); }

/* ---- controls ---- */
button {
  font: inherit; color: inherit; cursor: pointer;
  border: 1px solid var(--line); background: var(--surface);
  border-radius: 8px; min-height: var(--tap); padding: 10px 14px;
  transition: background .12s, border-color .12s;
}
button:active { transform: scale(.985); }
button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button[aria-pressed="true"] {
  border-color: var(--accent); background: var(--accent-wash);
  color: var(--accent-ink); font-weight: 600;
}
button.primary {
  background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600;
}
@media (prefers-color-scheme: dark) { button.primary { color: #08201E; } }
button.primary:disabled { opacity: .4; }
button.ghost { background: transparent; border-color: var(--line-strong); }
button.wide { width: 100%; }
button.small { min-height: 38px; padding: 6px 10px; font-size: .8125rem; border-radius: 6px; }

.stack { display: flex; flex-direction: column; gap: 8px; }
.row { display: flex; gap: 8px; flex-wrap: wrap; }
.row.tight { gap: 6px; }
.opt { text-align: left; width: 100%; }

input[type="text"], input[type="number"], input[type="password"] {
  font: inherit; color: inherit; width: 100%;
  background: var(--sunk); border: 1px solid var(--line);
  border-radius: 8px; padding: 12px 14px; min-height: var(--tap);
}
input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

/* ---- stepper ---- */
.stepper { display: flex; align-items: stretch; gap: 8px; }
.stepper button { width: 56px; flex: none; font-size: 1.25rem; font-weight: 600; }
.stepper .value {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 6px;
  background: var(--sunk); border: 1px solid var(--line); border-radius: 8px;
  font-size: 1.5rem; font-weight: 600; font-variant-numeric: tabular-nums;
}
.stepper .value span { font-size: .8125rem; font-weight: 400; color: var(--ink-faint); }
/* The rep count in the fitness test is typed as often as it is stepped, so the value slot
   is an input there. Strip the native spinners: the ± buttons already do that job. */
.stepper input.value { display: block; text-align: center; padding: 12px 8px; -moz-appearance: textfield; }
.stepper input.value::-webkit-outer-spin-button,
.stepper input.value::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

/* ---- scale ---- */
.scale { display: flex; gap: 6px; }
.scale button { flex: 1; min-width: 0; padding: 10px 0; }
.ends { display: flex; justify-content: space-between; margin-top: 6px; }

/* ---- session list ---- */
.day {
  display: flex; align-items: center; gap: 12px; width: 100%;
  text-align: left; padding: 14px; margin-bottom: 8px;
}
.day .badge {
  width: 44px; height: 44px; flex: none; border-radius: 8px;
  background: var(--accent-wash); color: var(--accent-ink);
  display: flex; align-items: center; justify-content: center;
  font-size: .75rem; font-weight: 700; letter-spacing: .04em;
}
.day.done .badge { background: var(--accent); color: #fff; }
.day .grow { flex: 1; min-width: 0; }
.day .chev { color: var(--ink-faint); }

/* ---- player ---- */
.setrow {
  display: grid; grid-template-columns: 28px 1fr 1fr 1fr; gap: 8px;
  align-items: center; padding: 8px 0; border-bottom: 1px solid var(--line);
}
.setrow:last-child { border-bottom: 0; }
.setrow .n { color: var(--ink-faint); font-size: .8125rem; }
.setrow.logged { color: var(--ink-soft); }
.setrow .cell { font-variant-numeric: tabular-nums; font-size: .9375rem; }

.timer {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 20;
  background: var(--accent); color: #fff;
  padding: 14px 16px calc(14px + env(safe-area-inset-bottom));
  display: flex; align-items: center; gap: 14px;
}
@media (prefers-color-scheme: dark) { .timer { color: #08201E; } }
.timer .t { font-size: 1.75rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.timer .grow { flex: 1; }
.timer button { background: rgba(255,255,255,.18); border-color: transparent; color: inherit; }

.pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .6875rem; letter-spacing: .06em; text-transform: uppercase;
  padding: 3px 8px; border-radius: 4px; background: var(--sunk); color: var(--ink-faint);
}
.pill.accent { background: var(--accent-wash); color: var(--accent-ink); }
.pill.warn { background: var(--warn-wash); color: var(--warn); }

.divider { height: 1px; background: var(--line); margin: 20px 0; border: 0; }

.sticky-actions {
  position: fixed; left: 0; right: 0; bottom: 0;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  background: linear-gradient(to top, var(--ground) 70%, transparent);
  display: flex; gap: 8px; max-width: 560px; margin: 0 auto;
}
.sticky-actions button { flex: 1; }

.center { text-align: center; }
.spinner { padding: 48px 0; text-align: center; color: var(--ink-faint); }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }