:root {
  --bg: #f4f6f6;
  --card: #ffffff;
  --text: #17201f;
  --muted: #5f6b6a;
  --line: #dde3e2;
  --accent: #0f766e;
  --accent-soft: #d5efec;
  --fever: #c2410c;
  --fever-soft: #ffe8dc;
  --ok: #15803d;
  --ok-soft: #dcf5e4;
  --med: #6d28d9;
  --med-soft: #ece4fd;
  --danger: #b91c1c;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1413;
    --card: #182120;
    --text: #e8eeed;
    --muted: #9aa8a6;
    --line: #2a3634;
    --accent: #2dd4bf;
    --accent-soft: #123c37;
    --fever: #fb923c;
    --fever-soft: #43220f;
    --ok: #4ade80;
    --ok-soft: #12321e;
    --med: #c4b5fd;
    --med-soft: #2c2346;
    --danger: #f87171;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
h1 { font-size: 1.35rem; margin: 0 0 .75rem; }
h2 { font-size: 1.05rem; margin: 0 0 .5rem; }
main { max-width: 640px; margin: 0 auto; padding: 12px 16px 24px; }
main.with-nav { padding-bottom: calc(84px + env(safe-area-inset-bottom)); }
.muted { color: var(--muted); }
.small { font-size: .85rem; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 640px; margin: 0 auto; padding: calc(10px + env(safe-area-inset-top)) 16px 0;
}
.brand { font-weight: 700; font-size: 1.15rem; text-decoration: none; color: var(--text); }
button.link { background: none; border: 0; color: var(--muted); padding: 6px; font: inherit; cursor: pointer; }

.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 10;
  display: flex; justify-content: space-around;
  background: var(--card); border-top: 1px solid var(--line);
  padding: 6px 4px calc(6px + env(safe-area-inset-bottom));
}
.tabbar a {
  flex: 1; text-align: center; text-decoration: none; color: var(--muted);
  font-size: .72rem; padding: 4px 0;
}
.tabbar a span { display: block; font-size: 1.25rem; line-height: 1.3; }
.tabbar a.on { color: var(--accent); font-weight: 600; }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px; margin: 12px 0;
}
.card.narrow { max-width: 420px; margin: 10vh auto 0; }
.stack > * + * { margin-top: 14px; }
.row { display: flex; gap: 12px; align-items: flex-end; }
.grow { flex: 1; }

label { display: block; font-weight: 600; font-size: .9rem; }
label.check { display: flex; gap: 8px; align-items: center; font-weight: 500; }
input, select, textarea {
  display: block; width: 100%; margin-top: 4px;
  font: inherit; font-size: 16px; /* keeps iOS from zooming */
  color: var(--text); background: var(--bg);
  border: 1px solid var(--line); border-radius: 10px; padding: 11px 12px;
}
input[type="checkbox"], input[type="radio"] { width: auto; margin: 0; }
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
fieldset { border: 0; padding: 0; margin: 0; }
legend { font-weight: 600; font-size: .9rem; margin-bottom: 6px; padding: 0; }

button {
  font: inherit; font-weight: 600; cursor: pointer;
  border-radius: 12px; padding: 12px 16px;
  border: 1px solid var(--line); background: var(--bg); color: var(--text);
}
button.primary {
  width: 100%; padding: 16px; font-size: 1.05rem;
  background: var(--accent); border-color: var(--accent); color: #fff;
}
@media (prefers-color-scheme: dark) { button.primary { color: #062320; } }
button.danger { background: none; color: var(--danger); border-color: var(--danger); width: 100%; margin-top: 12px; }

.alert { background: var(--fever-soft); color: var(--fever); padding: 10px 12px; border-radius: 10px; font-weight: 600; }
.toast { background: var(--ok-soft); color: var(--ok); padding: 10px 12px; border-radius: 10px; font-weight: 600; text-align: center; }

/* chips: radio-backed and plain */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips > input[type="radio"] { position: absolute; opacity: 0; pointer-events: none; }
.chip {
  display: inline-block; padding: 9px 14px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--bg); color: var(--text);
  font-weight: 500; font-size: .92rem; text-decoration: none; cursor: pointer;
}
.chips > input[type="radio"]:checked + .chip,
.chip.on { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); font-weight: 700; }
.chips > input[type="radio"]:focus-visible + .chip { outline: 2px solid var(--accent); }
.custom-time { display: none; }
.chips > input[value="custom"]:checked ~ .custom-time { display: block; }
.med-pick { background: var(--med-soft); border-color: transparent; color: var(--med); font-weight: 600; }

/* status card */
.status .label { font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; }
.big { font-size: 2.2rem; font-weight: 800; line-height: 1.1; }
.fever-text { color: var(--fever); }
.med-status {
  display: flex; flex-wrap: wrap; gap: 2px 10px; align-items: baseline;
  margin-top: 10px; padding: 8px 10px; border-radius: 10px; font-size: .92rem;
}
.med-status.ready { background: var(--ok-soft); }
.med-status.wait { background: var(--fever-soft); }

/* tabs (CSS-only, driven by hidden radios) */
.tabradio { position: absolute; opacity: 0; pointer-events: none; }
.tabs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 12px; }
.tab {
  text-align: center; padding: 14px 4px; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--line); font-size: 1rem; cursor: pointer;
}
.panel { display: none; }
#tab-temp:checked ~ .tabs .tab-temp,
#tab-med:checked ~ .tabs .tab-med,
#tab-note:checked ~ .tabs .tab-note { background: var(--accent); border-color: var(--accent); color: #fff; }
@media (prefers-color-scheme: dark) {
  #tab-temp:checked ~ .tabs .tab-temp,
  #tab-med:checked ~ .tabs .tab-med,
  #tab-note:checked ~ .tabs .tab-note { color: #062320; }
}
#tab-temp:checked ~ .panel-temp,
#tab-med:checked ~ .panel-med,
#tab-note:checked ~ .panel-note { display: block; }

.temp-input { display: flex; gap: 10px; align-items: stretch; }
input.huge { font-size: 2.2rem; font-weight: 700; text-align: center; padding: 10px; margin: 0; }
.seg { display: flex; flex-direction: column; gap: 6px; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg label {
  flex: 1; display: flex; align-items: center; justify-content: center;
  min-width: 56px; border: 1px solid var(--line); border-radius: 10px; cursor: pointer; background: var(--bg);
}
.seg input:checked + label { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }

/* entries */
.entries { list-style: none; margin: 0; padding: 0; }
.entries li + li { border-top: 1px solid var(--line); }
.entry { display: flex; gap: 12px; padding: 10px 2px; color: inherit; text-decoration: none; }
.when-col { min-width: 84px; white-space: nowrap; font-weight: 600; font-variant-numeric: tabular-nums; }
.when-col small { display: block; font-weight: 400; color: var(--muted); }
.what { display: flex; flex-wrap: wrap; gap: 4px 8px; align-items: baseline; }
.note-text { flex-basis: 100%; white-space: pre-wrap; overflow-wrap: anywhere; }
.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-weight: 700; font-size: .9rem; }
.badge.ok { background: var(--ok-soft); color: var(--ok); }
.badge.fever { background: var(--fever-soft); color: var(--fever); }
.badge.med { background: var(--med-soft); color: var(--med); }
.badge.note { background: var(--accent-soft); color: var(--accent); }

.range { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0; }
.chart-wrap { position: relative; height: 340px; }
.archived { opacity: .6; }

.qr { display: block; margin: 12px auto; background: #fff; padding: 8px; border-radius: 8px; max-width: 100%; height: auto; }
code.secret { word-break: break-all; font-size: .95rem; }
input.code { font-size: 1.6rem; letter-spacing: .3em; text-align: center; }

.topbar-actions { display: flex; align-items: center; gap: 4px; }
a.link { color: var(--muted); padding: 6px; text-decoration: none; }
.spaced { margin-top: 18px; }
.entry form { margin-left: auto; }
.small-btn { padding: 6px 12px; font-size: .85rem; }
.invite-link { background: var(--accent-soft); border-radius: 10px; padding: 12px; margin-bottom: 14px; }
.copy-src { font-size: 14px; }