:root {
  --bg: #f6f8f8;
  --card: #ffffff;
  --text: #13201f;
  --muted: #5b6b69;
  --line: #dde5e4;
  --accent: #0f766e;
  --accent-ink: #ffffff;
  --accent-soft: #e0f2f0;
  --warn: #b45309;
  --warn-soft: #fef3c7;
  --bad: #b91c1c;
  --bad-soft: #fee2e2;
  --good: #15803d;
  --good-soft: #dcfce7;
  --radius: 12px;
  --tap: 48px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1416;
    --card: #132022;
    --text: #e6efee;
    --muted: #93a7a4;
    --line: #22383a;
    --accent: #2dd4bf;
    --accent-ink: #062b27;
    --accent-soft: #123a36;
    --warn: #fbbf24;
    --warn-soft: #3a2d0b;
    --bad: #f87171;
    --bad-soft: #3b1414;
    --good: #4ade80;
    --good-soft: #10301b;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 1rem/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding-bottom: calc(72px + env(safe-area-inset-bottom));
}
h1, h2, h3 { line-height: 1.2; margin: 0.2em 0 0.5em; }
h1 { font-size: 1.5rem; }
h2 { font-size: 1.2rem; }
h3 { font-size: 1.05rem; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
.center { text-align: center; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row > .grow { flex: 1 1 140px; }
.spread { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
/* A page title with a button beside it; the button is taller than the title, so the row needs its own gap below. */
.page-head { margin-bottom: 12px; }
.stack > * + * { margin-top: 12px; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 8px; }
.hidden { display: none !important; }

#top {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; justify-content: space-between;
  padding: calc(10px + env(safe-area-inset-top)) 16px 10px;
  background: var(--accent); color: var(--accent-ink);
  font-weight: 600;
}
#sync { font-size: 0.8rem; background: rgba(0,0,0,.18); padding: 2px 10px; border-radius: 999px; }

main { max-width: 960px; margin: 0 auto; padding: 16px; }

#tabs {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 5;
  display: flex; background: var(--card); border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom);
}
#tabs a {
  flex: 1; min-height: 60px; display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: var(--muted); text-decoration: none; font-size: 0.8rem; gap: 2px;
}
#tabs a .ico { font-size: 1.3rem; line-height: 1; }
#tabs a.active { color: var(--accent); font-weight: 600; }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px; margin-bottom: 12px;
}
.card.link { cursor: pointer; }
.card.today { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.card h3 { margin-top: 0; }

button, .btn {
  min-height: var(--tap); padding: 0 18px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--card); color: var(--text); font: inherit; font-weight: 600; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; text-decoration: none;
}
button.primary, .btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
button.danger { color: var(--bad); border-color: var(--bad); }
button.ghost { background: transparent; border-color: transparent; }
button.small { min-height: 36px; padding: 0 12px; font-size: 0.875rem; }
button.block { width: 100%; }
button:disabled { opacity: 0.5; cursor: default; }

label { display: block; font-size: 0.875rem; color: var(--muted); margin-bottom: 4px; }
input, select, textarea {
  width: 100%; min-height: var(--tap); padding: 10px 12px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--bg); color: var(--text); font: inherit;
}
textarea { min-height: 90px; resize: vertical; }
input[type="checkbox"], input[type="radio"] { width: 22px; min-height: 22px; height: 22px; accent-color: var(--accent); }
.check { display: flex; align-items: center; gap: 10px; min-height: var(--tap); color: var(--text); font-size: 1rem; }
.field { margin-bottom: 12px; }

.chip { display: inline-block; font-size: 0.75rem; font-weight: 600; padding: 2px 8px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }
.chip.warn { background: var(--warn-soft); color: var(--warn); }
.chip.bad { background: var(--bad-soft); color: var(--bad); }
.chip.good { background: var(--good-soft); color: var(--good); }
.chip.gray { background: var(--line); color: var(--muted); }

.subtabs { display: flex; gap: 6px; overflow-x: auto; margin-bottom: 12px; padding-bottom: 4px; }
.subtabs button { min-height: 38px; white-space: nowrap; }
.subtabs button.active { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }

.stat { font-size: 1.6rem; font-weight: 700; }
.stat-label { font-size: 0.8rem; color: var(--muted); }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 6px 4px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; }

/* workout logger */
.exercise { border-top: 1px solid var(--line); padding-top: 10px; margin-top: 10px; }
.exercise:first-child { border-top: none; margin-top: 0; padding-top: 0; }
.prescription { font-size: 0.9rem; color: var(--muted); }
.setrow { display: grid; grid-template-columns: 34px 1fr 1fr 1fr 56px; gap: 6px; align-items: center; margin-top: 6px; }
.setrow input { min-height: 52px; text-align: center; font-size: 1.1rem; padding: 6px; }
.setrow .n { text-align: center; color: var(--muted); font-weight: 600; }
.setrow .done { min-height: 52px; padding: 0; font-size: 1.4rem; }
.setrow.is-done input { background: var(--good-soft); }
.setrow.is-done .done { background: var(--good); border-color: var(--good); color: #fff; }
/* Trim: two range inputs over one track; only their thumbs take pointer input. */
.trim { display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; }
.trim-range { position: relative; height: 44px; }
.trim-track { position: absolute; left: 0; right: 0; top: 50%; height: 8px; margin-top: -4px; border-radius: 4px; background: var(--line); }
.trim-sel { position: absolute; top: 0; bottom: 0; border-radius: 4px; background: var(--accent); }
.trim-range input[type="range"] {
  position: absolute; inset: 0; width: 100%; height: 44px; min-height: 0; margin: 0; padding: 0; border: 0;
  background: transparent; pointer-events: none; -webkit-appearance: none; appearance: none;
}
.trim-range input[type="range"]::-webkit-slider-runnable-track { height: 44px; background: transparent; }
.trim-range input[type="range"]::-moz-range-track { background: transparent; }
.trim-range input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; pointer-events: auto; width: 22px; height: 40px; margin-top: 2px;
  border-radius: 6px; border: 3px solid var(--accent); background: var(--card); cursor: ew-resize;
}
.trim-range input[type="range"]::-moz-range-thumb {
  pointer-events: auto; width: 16px; height: 34px; border-radius: 6px; border: 3px solid var(--accent); background: var(--card); cursor: ew-resize;
}
.trim-range input[type="range"]:focus-visible::-webkit-slider-thumb { outline: 3px solid var(--accent-soft); }
.trim-range input[type="range"]:focus-visible::-moz-range-thumb { outline: 3px solid var(--accent-soft); }
.rec-time { font-weight: 600; font-variant-numeric: tabular-nums; }
/* Coach video review queue */
.queue-item { display: flex; gap: 12px; align-items: flex-start; }
.queue-item .thumb { flex: 0 0 72px; width: 72px; height: 96px; min-height: 0; padding: 0; overflow: hidden; display: grid; place-items: center; background: #000; color: #fff; font-size: 1.4rem; border-radius: 10px; }
.queue-item .thumb img { width: 100%; height: 100%; object-fit: cover; }
.queue-body { flex: 1; min-width: 0; }
#tabs a { position: relative; }
#tabs .badge { position: absolute; top: 2px; right: calc(50% - 22px); min-width: 18px; height: 18px; padding: 0 5px; border-radius: 9px; background: var(--bad); color: #fff; font-size: 0.7rem; font-weight: 700; line-height: 18px; text-align: center; }
/* Password box with an eye toggle inside it; sign-up page */
.pw { position: relative; }
.pw input { padding-right: 52px; }
/* Edge/IE add their own reveal button; ours replaces it. */
.pw input::-ms-reveal, .pw input::-ms-clear { display: none; }
.pw .eye { position: absolute; right: 4px; top: 50%; transform: translateY(-50%); width: 44px; min-height: 40px; padding: 0; border: 0; background: transparent; color: var(--muted); display: grid; place-items: center; }
.pw .eye[aria-pressed="true"] { color: var(--accent); }
input[readonly] { color: var(--muted); }
.auth-page { max-width: 480px; margin: 0 auto; padding-top: 6vh; display: flex; flex-direction: column; gap: 12px; }
.auth-page > img { align-self: center; }
.videobar { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
video.player { width: 100%; max-height: 70vh; border-radius: 10px; background: #000; }
.sethead { display: grid; grid-template-columns: 34px 1fr 1fr 1fr 56px; gap: 6px; font-size: 0.75rem; color: var(--muted); text-align: center; margin-top: 8px; }

/* overlays */
.sheet-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 20; display: flex; align-items: flex-end; justify-content: center; }
.sheet { background: var(--card); width: 100%; max-width: 560px; max-height: 92vh; overflow: auto; border-radius: 18px 18px 0 0; padding: 18px 16px calc(18px + env(safe-area-inset-bottom)); }
@media (min-width: 700px) { .sheet-backdrop { align-items: center; } .sheet { border-radius: 18px; } }
.timer-big { font-size: 4.5rem; font-weight: 800; text-align: center; font-variant-numeric: tabular-nums; line-height: 1.1; }
.timer-phase { text-align: center; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; }
.timer-phase.work { color: var(--good); }
.timer-phase.rest { color: var(--warn); }

#toast { position: fixed; left: 50%; bottom: calc(84px + env(safe-area-inset-bottom)); transform: translateX(-50%); z-index: 30; pointer-events: none; }
#toast div { background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 10px; margin-top: 6px; box-shadow: 0 4px 18px rgba(0,0,0,.25); max-width: 90vw; }
#toast div.error { background: var(--bad); color: #fff; }

/* charts */
.chart { width: 100%; height: auto; display: block; }
.chart text { fill: var(--muted); font-size: 11px; }
.chart .grid { stroke: var(--line); stroke-width: 1; }
.legend { display: flex; gap: 12px; flex-wrap: wrap; font-size: 0.8rem; color: var(--muted); }
.legend span::before { content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 4px; background: var(--c); vertical-align: -1px; }

/* program builder */
.cal { display: grid; grid-template-columns: 64px repeat(7, minmax(0, 1fr)); gap: 4px; font-size: 0.8rem; }
.cal .wk { display: flex; flex-direction: column; justify-content: center; color: var(--muted); font-weight: 600; }
.cal .day { min-height: 56px; border: 1px dashed var(--line); border-radius: 8px; padding: 4px; cursor: pointer; overflow: hidden; background: var(--card); }
.cal .day.has { border-style: solid; border-color: var(--accent); background: var(--accent-soft); }
.cal .day.sel { box-shadow: 0 0 0 2px var(--accent); }
.cal .day .w { display: block; font-weight: 600; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cal .hd { text-align: center; color: var(--muted); font-weight: 600; }
.block-card { border: 1px solid var(--line); border-radius: 10px; padding: 10px; margin: 10px 0; background: var(--bg); }
.item-card { border-top: 1px dashed var(--line); padding-top: 8px; margin-top: 8px; }
.item-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(90px, 1fr)); gap: 6px; }
.item-grid label { font-size: 0.75rem; }

.photo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.photo-grid img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; border-radius: 8px; background: var(--line); }
.thread .msg { max-width: 85%; padding: 8px 12px; border-radius: 14px; margin: 6px 0; background: var(--card); border: 1px solid var(--line); }
.thread .msg.mine { margin-left: auto; background: var(--accent-soft); border-color: transparent; }
.thread .meta { font-size: 0.75rem; color: var(--muted); }
.banner { padding: 12px 14px; border-radius: var(--radius); background: var(--warn-soft); color: var(--text); margin-bottom: 12px; }
.body-fig { max-width: 160px; margin: 0 auto; display: block; }
.body-fig .site { fill: var(--line); }
.body-fig .site.on { fill: var(--accent); }
.body-fig .outline { fill: none; stroke: var(--muted); stroke-width: 2; }