:root {
  --bg: #0b0d10;
  --bg-elev: #15191e;
  --bg-elev-2: #1d232a;
  --border: #2a3038;
  --text: #e8eaed;
  --muted: #8b95a1;
  --accent: #4ade80;
  --accent-dim: #1f3a26;
  --danger: #f87171;
  --warn: #fbbf24;
  --r: 12px;
  --tap: 48px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-top: env(safe-area-inset-top, 0px);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text);
  font: 16px/1.45 -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif;
  -webkit-tap-highlight-color: transparent; }
body { padding-bottom: calc(72px + var(--safe-bottom)); }

.app-bar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: calc(10px + var(--safe-top)) 16px 10px;
  background: var(--bg); border-bottom: 1px solid var(--border);
}
.app-bar .title { font-weight: 600; letter-spacing: 0.3px; }
.status { font-size: 12px; color: var(--muted); }
.status.online { color: var(--accent); }
.status.syncing { color: var(--warn); }
.status.error { color: var(--danger); }

main { padding: 16px; padding-bottom: 24px; }

h1, h2, h3 { margin: 0 0 8px; }
h1 { font-size: 22px; }
h2 { font-size: 18px; }
h3 { font-size: 15px; color: var(--muted); font-weight: 500; }
p  { color: var(--muted); margin: 4px 0; }
small { color: var(--muted); }

.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 14px;
  margin-bottom: 12px;
}
.card h2 { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.muscle { font-size: 11px; text-transform: uppercase; letter-spacing: 1px;
  color: var(--muted); background: var(--bg-elev-2);
  padding: 3px 8px; border-radius: 99px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: var(--tap); min-width: var(--tap);
  padding: 0 14px; border-radius: var(--r);
  background: var(--bg-elev-2); color: var(--text);
  border: 1px solid var(--border);
  font: inherit; font-weight: 500;
  cursor: pointer; user-select: none;
}
.btn:active { transform: scale(0.97); }
.btn.primary { background: var(--accent); color: #07140d; border-color: var(--accent); }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--danger); }
.btn.small { min-height: 36px; padding: 0 10px; font-size: 14px; }
.btn.block { width: 100%; }

.row { display: flex; gap: 8px; align-items: center; }
.row.space { justify-content: space-between; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

.stepper { display: grid; grid-template-columns: var(--tap) 1fr var(--tap); gap: 6px; }
.stepper button {
  border: 1px solid var(--border); background: var(--bg-elev-2);
  color: var(--text); font-size: 22px; font-weight: 600;
  border-radius: var(--r); height: var(--tap);
}
.stepper input {
  text-align: center; font-size: 22px; font-weight: 600;
  background: var(--bg-elev-2); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--r);
  height: var(--tap);
}
.stepper-label { font-size: 11px; color: var(--muted);
  text-transform: uppercase; letter-spacing: 1px; margin-bottom: 4px; }

.set-row {
  display: grid; grid-template-columns: 28px 1fr 1fr auto auto;
  gap: 8px; align-items: center; padding: 8px 0;
  border-top: 1px dashed var(--border);
}
.set-row:first-of-type { border-top: 0; }
.set-row .n { color: var(--muted); font-variant-numeric: tabular-nums; }
.set-row .val { font-variant-numeric: tabular-nums; font-weight: 600; }
.set-row .done { color: var(--accent); }
.set-row.warmup .val { color: var(--muted); font-weight: 400; }

.hint {
  font-size: 13px; color: var(--muted); margin-top: 6px;
  background: var(--bg-elev-2); padding: 8px 10px; border-radius: 8px;
}
.hint.suggest { color: var(--accent); }

.tabs {
  position: fixed; bottom: 0; left: 0; right: 0;
  display: grid; grid-template-columns: repeat(5, 1fr);
  background: var(--bg-elev); border-top: 1px solid var(--border);
  padding-bottom: var(--safe-bottom);
  z-index: 10;
}
.tab {
  background: none; border: 0; color: var(--muted);
  padding: 12px 0; font: inherit; font-size: 13px; cursor: pointer;
}
.tab.active { color: var(--accent); }

.timer {
  position: fixed; bottom: calc(72px + var(--safe-bottom) + 12px); left: 16px; right: 16px;
  background: var(--accent); color: #07140d;
  padding: 10px 14px; border-radius: var(--r);
  font-weight: 600; display: none; align-items: center; justify-content: space-between;
  box-shadow: 0 6px 24px rgba(0,0,0,0.35);
  z-index: 9;
}
.timer.show { display: flex; }
.timer .t { font-variant-numeric: tabular-nums; font-size: 18px; }
.timer button { background: rgba(0,0,0,0.15); border: 0; color: inherit;
  padding: 6px 10px; border-radius: 8px; font: inherit; }

input[type="number"], input[type="text"], input[type="date"], textarea, select {
  width: 100%; padding: 10px 12px; border-radius: 8px;
  background: var(--bg-elev-2); color: var(--text);
  border: 1px solid var(--border); font: inherit;
}
label { display: block; margin: 10px 0; }
label .lbl { display: block; font-size: 12px; color: var(--muted);
  text-transform: uppercase; letter-spacing: 1px; margin-bottom: 4px; }

ul.list { list-style: none; padding: 0; margin: 0; }
ul.list li { padding: 12px; border-bottom: 1px solid var(--border); }
ul.list li:last-child { border-bottom: 0; }

.empty { text-align: center; padding: 32px 16px; color: var(--muted); }
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6);
  display: flex; align-items: flex-end; justify-content: center;
  z-index: 20;
}
.modal {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 16px 16px 0 0; width: 100%; max-width: 520px;
  padding: 16px; padding-bottom: calc(16px + var(--safe-bottom));
}
.kv { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; font-size: 14px; }
.kv dt { color: var(--muted); }