:root {
  --bg: #1e2730;
  --surface: #28333e;
  --line: #3a4753;
  --ink: #ebe7dd;
  --ink-2: #a9b2ba;
  --brass: #d6a43c;
  --brass-ink: #1b1608;
  --danger: #e0786b;
  --radius: 10px;
  --tap: 48px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-variant-numeric: tabular-nums;
  padding-bottom: calc(64px + env(safe-area-inset-bottom));
}
a { color: inherit; }
h1, h2 { margin: 0; font-weight: 650; letter-spacing: -0.01em; }
h1 { font-size: 1.35rem; }
h2 { font-size: 1.1rem; }
.wrap { max-width: 560px; margin: 0 auto; padding: 12px 16px 24px; }
.muted { color: var(--ink-2); font-weight: 400; }
.err { color: var(--danger); margin: 6px 0 0; font-size: 0.95rem; }
.notice { background: var(--surface); border-left: 3px solid var(--brass); padding: 10px 12px; border-radius: 6px; margin: 0 0 14px; }
.empty { color: var(--ink-2); text-align: center; padding: 32px 0; }

/* buttons */
.btn {
  min-height: var(--tap);
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.btn.primary { background: var(--brass); border-color: var(--brass); color: var(--brass-ink); }
.btn.stamp { border-style: dashed; color: var(--ink-2); }
.btn.stamp.on { border-style: solid; border-color: var(--brass); color: var(--brass); background: transparent; }
.btn:active, .chip:active, .step:active { transform: translateY(1px); }
:focus-visible { outline: 3px solid var(--brass); outline-offset: 2px; }

/* week strip */
.week-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.week-title { display: flex; flex-direction: column; align-items: center; line-height: 1.2; }
.week-title strong { font-size: 1.05rem; }
.week-title .muted { font-size: 0.9rem; }
.arrow { display: grid; place-items: center; width: var(--tap); height: var(--tap); text-decoration: none; font-size: 1.8rem; color: var(--ink-2); border-radius: var(--radius); }
.days { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
.day {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  height: 64px; border-radius: var(--radius); text-decoration: none;
  background: var(--surface); border: 2px solid transparent;
}
.day .wd { font-size: 0.75rem; color: var(--ink-2); }
.day .dn { font-size: 1.25rem; font-weight: 650; }
.day.trained { background: var(--brass); }
.day.trained .wd, .day.trained .dn { color: var(--brass-ink); }
.day.sel { border-color: var(--ink); }
.day.today .dn::after { content: ""; display: block; width: 5px; height: 5px; border-radius: 50%; background: currentColor; margin: 1px auto 0; }

/* day bar */
.daybar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 20px 0 14px; }

/* exercises */
.ex { background: var(--surface); border-radius: 14px; padding: 14px 14px 12px; margin-bottom: 12px; }
.ex-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; margin-bottom: 8px; }
.sum { color: var(--ink-2); font-size: 0.9rem; white-space: nowrap; }
.chips { list-style: none; margin: 0 0 10px; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; min-height: 0; }
.chip-form { margin: 0; }
.chip {
  min-width: 52px; height: 44px; padding: 0 12px;
  border-radius: 22px; border: 1px solid var(--brass);
  background: transparent; color: var(--ink);
  font: inherit; font-size: 1.2rem; font-weight: 650; cursor: pointer;
}
.add { display: grid; grid-template-columns: var(--tap) 1fr var(--tap) auto; gap: 8px; align-items: stretch; }
.step {
  height: var(--tap); border-radius: var(--radius); border: 1px solid var(--line);
  background: var(--bg); color: var(--ink); font: inherit; font-size: 1.5rem; cursor: pointer;
}
.reps {
  height: var(--tap); width: 100%; text-align: center;
  border-radius: var(--radius); border: 1px solid var(--line);
  background: var(--bg); color: var(--ink); font: inherit; font-size: 1.5rem; font-weight: 650;
}
.reps::placeholder { color: var(--ink-2); font-size: 1rem; font-weight: 400; }

/* bottom tabs */
.tabs {
  position: fixed; left: 0; right: 0; bottom: 0;
  display: grid; grid-template-columns: repeat(5, 1fr);
  background: var(--surface); border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom);
}
.tabs a { display: grid; place-items: center; height: 56px; text-decoration: none; color: var(--ink-2); font-size: 0.82rem; font-weight: 600; }
.tabs a.on { color: var(--brass); box-shadow: inset 0 3px 0 var(--brass); }

/* login */
.login { max-width: 360px; margin: 18vh auto 0; display: grid; gap: 14px; }
.login h1 { font-size: 2rem; }
.login form { display: grid; gap: 10px; }
.login input { height: var(--tap); border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); color: var(--ink); font: inherit; padding: 0 12px; }

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

/* management pages */
.page-title { margin: 6px 0 4px; font-size: 1.6rem; }
.lead { margin: 0 0 16px; }
.section { margin: 26px 0 6px; font-size: 1.1rem; }
.inline-add { display: grid; grid-template-columns: 1fr auto; gap: 8px; margin-bottom: 8px; }
.inline-add input, .stack input {
  height: var(--tap); border-radius: var(--radius); border: 1px solid var(--line);
  background: var(--surface); color: var(--ink); font: inherit; padding: 0 12px; min-width: 0; width: 100%;
}
.exlist, .plain { list-style: none; margin: 10px 0 0; padding: 0; }
.exlist > li { background: var(--surface); border-radius: 12px; margin-bottom: 8px; }
.exlist summary { display: flex; justify-content: space-between; align-items: center; min-height: 56px; padding: 0 14px; cursor: pointer; list-style: none; }
.exlist summary::-webkit-details-marker { display: none; }
.exlist .name { font-weight: 600; }
.exedit { padding: 0 14px 14px; display: grid; gap: 10px; }
.exedit .inline-add { margin: 0; }
.row { display: flex; gap: 8px; flex-wrap: wrap; }
.row form { margin: 0; }
.between { justify-content: space-between; align-items: center; min-height: 56px; padding: 0 14px; }
.btn.quiet { color: var(--ink-2); }
.btn:disabled { opacity: 0.4; cursor: default; }
.card { background: var(--surface); border-radius: 14px; padding: 16px; }
.card p { margin: 0 0 4px; }
.big { font-size: 1.4rem; font-weight: 650; }
.small { font-size: 0.9rem; }
.stack { display: grid; gap: 12px; }
.stack label { display: grid; gap: 6px; font-size: 0.95rem; color: var(--ink-2); }
.stack input { color: var(--ink); }

/* stats */
.pills { display: flex; gap: 8px; overflow-x: auto; padding: 4px 0 10px; scrollbar-width: none; }
.pills::-webkit-scrollbar { display: none; }
.pill { flex: 0 0 auto; height: 40px; display: grid; place-items: center; padding: 0 14px; border-radius: 20px; border: 1px solid var(--line); text-decoration: none; color: var(--ink-2); font-weight: 600; white-space: nowrap; }
.pill.on { border-color: var(--brass); color: var(--ink); background: var(--surface); }
.tiles { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 12px; }
.tile { background: var(--surface); border-radius: 14px; padding: 14px; display: grid; gap: 2px; }
.tile-label { color: var(--ink-2); font-size: 0.85rem; }
.tile-value { font-size: 2.2rem; font-weight: 650; line-height: 1.1; }
.tile-sub { color: var(--ink-2); font-size: 0.85rem; }
.chart-card { margin-bottom: 12px; }
.chart-card h2 { font-size: 1rem; margin-bottom: 8px; }
.chart { display: block; touch-action: pan-y; }
.chart circle { cursor: pointer; }
.cmp { width: 100%; border-collapse: collapse; margin-top: 8px; }
.cmp th { text-align: left; color: var(--ink-2); font-weight: 500; font-size: 0.85rem; padding: 6px 8px; border-bottom: 1px solid var(--line); }
.cmp td { padding: 10px 8px; border-bottom: 1px solid var(--line); }
.cmp td + td, .cmp th + th { text-align: right; }
.table-view { margin-top: 20px; }
.table-view summary { color: var(--ink-2); cursor: pointer; min-height: 44px; display: flex; align-items: center; }
.tip { position: absolute; background: var(--ink); color: var(--bg); padding: 6px 10px; border-radius: 8px; font-size: 0.9rem; font-weight: 600; pointer-events: none; white-space: nowrap; }

.logout { margin-top: 14px; }
.login label { color: var(--ink-2); font-size: 0.95rem; margin-top: 4px; }