:root {
  /* Night mode (always on) */
  --bg: #07080b;
  --card: #111319;
  --card2: #1a1d25;
  --line: #242833;
  --text: #e8eaef;
  --muted: #8b93a3;
  --accent: #5b8def;
  --accent-ink: #fff;
  --good: #27a863;
  --warn: #e39a2a;
  --bad: #e25555;
  --radius: 14px;
  --tabs-h: 64px;
  color-scheme: dark;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body {
  font: 16px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, sans-serif;
  padding-bottom: calc(var(--tabs-h) + env(safe-area-inset-bottom) + 90px);
  overscroll-behavior-y: none;
}
h1, h2, h3 { margin: 0; line-height: 1.2; }
h2 { font-size: 1.05rem; margin: 22px 0 10px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; font-weight: 600; font-size: .8rem; }
h3 { font-size: 1.05rem; }
p { margin: 6px 0; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.hidden { display: none !important; }

.topbar {
  position: sticky; top: 0; z-index: 5; display: flex; align-items: center; justify-content: space-between;
  gap: 10px; padding: calc(env(safe-area-inset-top) + 12px) 16px 12px; background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.topbar h1 { font-size: 1.3rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
main { padding: 8px 16px; max-width: 640px; margin: 0 auto; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; margin: 10px 0; }
.card.hl { border-color: var(--accent); }
.row { display: flex; align-items: center; gap: 10px; }
.row.between { justify-content: space-between; }
.wrap { flex-wrap: wrap; }
.grow { flex: 1; min-width: 0; }
.stack > * + * { margin-top: 8px; }

button, .btn {
  font: inherit; border: 1px solid var(--line); background: var(--card2); color: var(--text);
  border-radius: 12px; padding: 10px 14px; min-height: 44px; cursor: pointer; text-decoration: none;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
}
button:active { transform: scale(.98); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
button.good { background: var(--good); border-color: var(--good); color: #fff; font-weight: 600; }
button.danger { color: var(--bad); }
button.ghost { background: transparent; border-color: transparent; }
button.block, .btn.block { width: 100%; }
button.sm { min-height: 34px; padding: 6px 10px; font-size: .9rem; border-radius: 10px; }
button:disabled { opacity: .5; }

input, select, textarea {
  font: inherit; color: var(--text); background: var(--card2); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px; min-height: 44px; width: 100%;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
label { display: block; font-size: .85rem; color: var(--muted); margin: 10px 0 4px; }
.chk { display: flex; align-items: center; gap: 10px; color: var(--text); font-size: 1rem; margin: 8px 0; }
.chk input { width: 22px; height: 22px; min-height: 0; }

.pill { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: .75rem; font-weight: 600; background: var(--card2); color: var(--muted); }
.pill.up { background: color-mix(in srgb, var(--good) 20%, transparent); color: var(--good); }
.pill.stalled { background: color-mix(in srgb, var(--warn) 20%, transparent); color: var(--warn); }
.pill.over { background: color-mix(in srgb, var(--bad) 20%, transparent); color: var(--bad); }
.pill.star { background: color-mix(in srgb, var(--accent) 20%, transparent); color: var(--accent); }

.week { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; text-align: center; }
.week .d { padding: 8px 0; border-radius: 10px; background: var(--card2); font-size: .8rem; color: var(--muted); border: 1px solid transparent; }
.week .d b { display: block; font-size: 1rem; color: var(--text); }
.week .d.plan { border-color: var(--accent); }
.week .d.done { background: var(--good); color: #fff; }
.week .d.done b { color: #fff; }
.week .d.today { outline: 2px solid var(--text); outline-offset: 1px; }

.advice { font-size: .88rem; padding: 8px 10px; border-radius: 10px; margin: 8px 0; background: var(--card2); }
.advice.up { background: color-mix(in srgb, var(--good) 16%, transparent); }
.advice.stalled { background: color-mix(in srgb, var(--warn) 16%, transparent); }

/* Active workout */
.ex-head { display: flex; align-items: flex-start; gap: 8px; }
.ex-head h3 { flex: 1; }
.sets { width: 100%; border-collapse: collapse; margin-top: 6px; }
.sets th { font-size: .72rem; color: var(--muted); font-weight: 600; text-transform: uppercase; padding: 4px 2px; text-align: center; }
.sets td { padding: 4px 2px; text-align: center; vertical-align: middle; }
.sets td.n { width: 28px; color: var(--muted); font-weight: 600; }
.sets td.prev { width: 70px; font-size: .8rem; color: var(--muted); }
.sets input { text-align: center; padding: 8px 4px; font-size: 1.1rem; font-weight: 600; }
.sets tr.done td { background: color-mix(in srgb, var(--good) 14%, transparent); }
.sets tr.done td:first-child { border-radius: 10px 0 0 10px; }
.sets tr.done td:last-child { border-radius: 0 10px 10px 0; }
.sets tr.warmup td.n { color: var(--warn); }
.check { width: 48px; height: 44px; padding: 0; font-size: 1.2rem; }
tr.done .check { background: var(--good); color: #fff; border-color: var(--good); }

/* Timer */
.timer {
  position: fixed; left: 0; right: 0; bottom: calc(var(--tabs-h) + env(safe-area-inset-bottom)); z-index: 8;
  background: var(--card); border-top: 1px solid var(--line); padding: 10px 16px;
  box-shadow: 0 -6px 20px rgba(0,0,0,.25);
}
.timer .inner { max-width: 640px; margin: 0 auto; display: flex; align-items: center; gap: 10px; }
.timer .inner { gap: 6px; }
.timer .clock { font-size: 1.9rem; font-variant-numeric: tabular-nums; font-weight: 700; min-width: 76px; }
.timer button.sm { padding: 6px 8px; }
.timer .lbl { flex: 1; min-width: 0; font-size: .85rem; color: var(--muted); }
.timer .lbl b { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; color: var(--text); font-size: .9rem; line-height: 1.2; }
.timer .bar { height: 4px; background: var(--card2); border-radius: 4px; overflow: hidden; max-width: 640px; margin: 0 auto 8px; }
.timer .bar i { display: block; height: 100%; background: var(--accent); }
.timer.go { background: var(--good); color: #fff; animation: pulse 1s ease-in-out 3; }
.timer.go .lbl, .timer.go .lbl b { color: #fff; }
@keyframes pulse { 50% { filter: brightness(1.25); } }

.tabs {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 9; display: grid; grid-template-columns: repeat(4, 1fr);
  background: var(--card); border-top: 1px solid var(--line); padding-bottom: env(safe-area-inset-bottom);
}
.tabs button { border: 0; border-radius: 0; background: transparent; flex-direction: column; gap: 2px; height: var(--tabs-h); font-size: .72rem; color: var(--muted); }
.tabs button .ti { font-size: 1.1rem; }
.tabs button.on { color: var(--accent); }

.sheet { position: fixed; inset: 0; z-index: 20; background: rgba(0,0,0,.5); display: flex; align-items: flex-end; }
.sheet .panel {
  background: var(--bg); width: 100%; max-width: 640px; margin: 0 auto; max-height: 88vh; overflow: auto;
  border-radius: 18px 18px 0 0; padding: 16px 16px calc(16px + env(safe-area-inset-bottom));
}
.sheet .panel .row.between h3 { font-size: 1.15rem; }
.list-item { display: block; width: 100%; text-align: left; padding: 12px; margin: 6px 0; border-radius: 12px; background: var(--card); border: 1px solid var(--line); min-height: 0; }
.list-item .t { font-weight: 600; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin: 8px 0; }
.chips button { min-height: 32px; padding: 4px 10px; font-size: .85rem; border-radius: 999px; }
.chips button.on { background: var(--accent); border-color: var(--accent); color: #fff; }

.toast {
  position: fixed; left: 16px; right: 16px; top: calc(env(safe-area-inset-top) + 64px); z-index: 30;
  max-width: 600px; margin: 0 auto; background: var(--card2); color: var(--text); border: 1px solid var(--line); box-shadow: 0 8px 24px rgba(0,0,0,.5); padding: 12px 14px; border-radius: 12px; font-weight: 500;
}
.edit-ex { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.edit-ex label { margin-top: 4px; }
.kv { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid var(--line); font-size: .92rem; }
.kv:last-child { border-bottom: 0; }
details summary { cursor: pointer; list-style: none; }
details summary::-webkit-details-marker { display: none; }
ol.steps { padding-left: 20px; margin: 6px 0; }
ol.steps li { margin: 4px 0; }

.warmup-box { margin-top: 10px; padding: 4px 10px; border-radius: 10px; background: var(--card2); }
.warmup-box .chk { margin: 6px 0; }
.warmup-box select { margin-bottom: 6px; }