/* Coach PWA — pool-deck-at-night. Dark only, by design: 06:15 gym light and
   evening pool deck. High contrast, huge targets, numerals as identity. */

:root {
  --bg: #0A1214;
  --surface: #101B1E;
  --raised: #152428;
  --line: #1E2E32;
  --ink: #E9F2F3;
  --dim: #8FA6AA;
  --faint: #5C7378;
  --swim: #3FC9E0;
  --lift: #E8843C;
  --green: #4ADE80;
  --amber: #FBBF24;
  --red: #F87171;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.45;
  min-height: 100dvh;
  padding-bottom: calc(64px + env(safe-area-inset-bottom));
}

/* ---------- chrome ---------- */
.top {
  display: flex; align-items: center; justify-content: space-between;
  padding: calc(10px + env(safe-area-inset-top)) 18px 10px;
  position: sticky; top: 0; background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px); z-index: 5;
}
.brand {
  font-weight: 800; letter-spacing: .38em; font-size: 13px; color: var(--dim);
}
.sync { width: 9px; height: 9px; border-radius: 50%; background: var(--faint); }
.sync.ok { background: var(--green); }
.sync.pending { background: var(--amber); }
.sync.err { background: var(--red); }

.tabs {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 5;
  display: flex; border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  backdrop-filter: blur(10px);
  padding-bottom: env(safe-area-inset-bottom);
}
.tabs a {
  flex: 1; text-align: center; padding: 9px 0 7px; text-decoration: none;
  color: var(--faint); font-size: 11px; font-weight: 600; letter-spacing: .04em;
}
.tabs a .ic { display: block; font-size: 17px; margin-bottom: 1px; }
.tabs a.active { color: var(--ink); }

.view { padding: 6px 16px 24px; max-width: 640px; margin: 0 auto; }

/* ---------- today ---------- */
.eyebrow {
  font-family: var(--mono); font-size: 12px; color: var(--faint);
  letter-spacing: .12em; text-transform: uppercase; margin: 10px 2px 2px;
}
.headline { font-size: 22px; font-weight: 800; line-height: 1.2; margin: 2px 2px 12px; }

.chip {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--mono); font-size: 13px; font-weight: 500;
  border: 1px solid var(--line); border-radius: 999px;
  padding: 5px 12px; color: var(--dim); background: var(--surface);
}
.chip .dot { width: 8px; height: 8px; border-radius: 50%; }
.dot.g { background: var(--green); } .dot.a { background: var(--amber); }
.dot.r { background: var(--red); } .dot.u { background: var(--faint); }

.quick { display: flex; gap: 8px; flex-wrap: wrap; margin: 14px 0 4px; }
.quick button {
  font: 600 13px var(--sans); color: var(--ink);
  background: var(--raised); border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 13px; cursor: pointer;
}
.quick button:active { transform: scale(.97); }

/* the signature: whiteboard session card */
.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 14px; padding: 16px; margin: 14px 0;
  border-left: 4px solid var(--faint);
}
.card.swim { border-left-color: var(--swim); }
.card.lift { border-left-color: var(--lift); }
.card h2 { font-size: 16px; font-weight: 800; margin-bottom: 2px; }
.card h3 { font-size: 13px; font-weight: 700; color: var(--dim);
  text-transform: uppercase; letter-spacing: .08em; margin: 14px 0 6px; }
.card .meta { font-family: var(--mono); font-size: 12px; color: var(--faint); margin-bottom: 10px; }
.card ul { list-style: none; }
.card li {
  font-family: var(--mono); font-size: 14px; line-height: 1.5;
  padding: 7px 0 7px 14px; border-left: 2px solid var(--line); margin: 4px 0;
  white-space: pre-wrap;
}
.card p { margin: 8px 0; color: var(--ink); }
.card table { border-collapse: collapse; width: 100%; font-size: 13.5px; margin: 8px 0; }
.card th { text-align: left; color: var(--faint); font-weight: 600; font-size: 12px;
  text-transform: uppercase; letter-spacing: .05em; padding: 4px 8px 4px 0; }
.card td { font-family: var(--mono); padding: 6px 8px 6px 0; border-top: 1px solid var(--line); }
.card strong { font-weight: 700; }
.bignum { font-family: var(--mono); font-variant-numeric: tabular-nums;
  font-size: 30px; font-weight: 700; letter-spacing: -.02em; }

/* ---------- forms ---------- */
label.f { display: block; font-size: 12px; font-weight: 700; color: var(--dim);
  text-transform: uppercase; letter-spacing: .07em; margin: 16px 0 6px; }
input, select, textarea {
  width: 100%; background: var(--raised); color: var(--ink);
  border: 1px solid var(--line); border-radius: 10px;
  font: 500 16px var(--sans); padding: 12px;
}
textarea { min-height: 84px; resize: vertical; }
input[type=number] { font-family: var(--mono); }
input:focus, select:focus, textarea:focus, button:focus-visible {
  outline: 2px solid var(--swim); outline-offset: 1px;
}

.seg { display: flex; gap: 6px; }
.seg button {
  flex: 1; padding: 12px 0; border-radius: 10px; border: 1px solid var(--line);
  background: var(--raised); color: var(--dim); font: 700 14px var(--sans); cursor: pointer;
}
.seg button.on { background: var(--ink); color: var(--bg); border-color: var(--ink); }

.rpe { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; }
.rpe button {
  padding: 13px 0; border-radius: 10px; border: 1px solid var(--line);
  background: var(--raised); color: var(--dim);
  font: 700 17px var(--mono); cursor: pointer;
}
.rpe button.on { background: var(--swim); color: var(--bg); border-color: var(--swim); }

.setrow { display: grid; grid-template-columns: 1fr 76px 76px 64px 34px; gap: 6px; margin: 6px 0; align-items: center; }
.setrow input { padding: 10px 8px; font-size: 15px; }
.setrow .x { background: none; border: none; color: var(--faint); font-size: 18px; cursor: pointer; }
.rowhead { display: grid; grid-template-columns: 1fr 76px 76px 64px 34px; gap: 6px;
  font-size: 10.5px; color: var(--faint); text-transform: uppercase; letter-spacing: .06em;
  font-weight: 700; margin-top: 10px; }

.btn {
  display: block; width: 100%; margin: 18px 0 6px; padding: 15px;
  border-radius: 12px; border: none; cursor: pointer;
  background: var(--swim); color: var(--bg); font: 800 16px var(--sans);
  letter-spacing: .02em;
}
.btn.secondary { background: var(--raised); color: var(--ink); border: 1px solid var(--line); }
.btn:active { transform: scale(.99); }
.btn[disabled] { opacity: .5; }

.addrow { font: 600 14px var(--sans); color: var(--swim); background: none;
  border: 1px dashed var(--line); border-radius: 10px; width: 100%;
  padding: 11px; margin-top: 6px; cursor: pointer; }

/* ---------- history ---------- */
.hitem {
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
  background: var(--surface); border: 1px solid var(--line);
  border-left: 4px solid var(--faint); border-radius: 12px;
  padding: 13px 14px; margin: 8px 0;
}
.hitem.swim { border-left-color: var(--swim); }
.hitem.lift { border-left-color: var(--lift); }
.hitem .d { font-family: var(--mono); font-size: 12px; color: var(--faint); }
.hitem .t { font-weight: 700; font-size: 15px; }
.hitem .r { font-family: var(--mono); font-size: 13px; color: var(--dim); white-space: nowrap; }

.note { font-size: 13.5px; color: var(--dim); margin: 10px 2px; line-height: 1.5; }
.note a { color: var(--swim); }
.empty { text-align: center; color: var(--faint); padding: 48px 20px 20px; font-size: 14px; }
.empty .big { font-size: 34px; display: block; margin-bottom: 10px; }

.toast {
  position: fixed; left: 50%; bottom: calc(84px + env(safe-area-inset-bottom));
  transform: translateX(-50%); z-index: 9;
  background: var(--ink); color: var(--bg); font: 600 14px var(--sans);
  border-radius: 10px; padding: 11px 18px; max-width: 88vw;
}

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