:root {
  color-scheme: light dark;
  --bg: #f4f6f8;
  --card: #fff;
  --fg: #16202a;
  --muted: #5b6876;
  --line: #d5dce3;
  --brand: #1f3b57;
  --accent: #2563a6;
  --danger: #c0392b;
  --ok: #1e7b45;
  --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f151b;
    --card: #18212a;
    --fg: #e6ebf0;
    --muted: #9aa7b4;
    --line: #2c3a47;
    --accent: #6aa5e6;
    --danger: #ef6b5b;
    --ok: #4cc27f;
  }
}

/* Noto Color Emoji, cut to the emoji the app uses (third_party/README.md).
   tech() makes browsers without COLRv1 (Safari) skip it and use their own
   emoji font. */
@font-face {
  font-family: "Noto Color Emoji";
  src: url("/fonts/noto-color-emoji.woff2") format("woff2") tech(color-COLRv1);
  font-display: swap;
  unicode-range: U+2600, U+26A0, U+2705, U+1F319, U+1F493, U+1FA7A, U+FE0F;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 1rem/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
/* The emoji font comes first, but unicode-range limits it to its emoji. */
body, input, select, textarea, button {
  font-family: "Noto Color Emoji", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
}
.emo { font-style: normal; }

/* Material Symbols from /icons.svg. */
.ic { width: 1.25em; height: 1.25em; fill: currentColor; flex: none; }
button:has(> .ic) { display: inline-flex; align-items: center; justify-content: center; gap: 6px; }
[hidden] { display: none !important; }

.bar {
  position: sticky; top: 0; z-index: 2;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: calc(env(safe-area-inset-top) + 10px) 16px 10px;
  background: var(--brand); color: #fff;
}
.bar h1 { margin: 0; font-size: 1.15rem; }
.bar nav { display: flex; gap: 4px; }
.bar nav button {
  background: transparent; color: #cfdce8; border: 0; padding: 8px 10px; border-radius: 8px; font: inherit; cursor: pointer;
}
.bar nav button[aria-current="page"] { background: rgba(255,255,255,.15); color: #fff; font-weight: 600; }
/* Narrow screens: icon over a small label, like a tab bar. */
@media (max-width: 520px) {
  .bar { padding-left: 12px; padding-right: 8px; }
  .bar nav { gap: 2px; }
  .bar nav button { flex-direction: column; gap: 2px; padding: 6px 8px; font-size: .72rem; min-width: 56px; }
  .bar nav .ic { width: 22px; height: 22px; }
}

main { max-width: 560px; margin: 0 auto; padding: 16px 16px calc(env(safe-area-inset-bottom) + 24px); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px; margin-bottom: 16px; display: grid; gap: 12px;
}
.card h2 { margin: 0; font-size: 1.05rem; }

label { display: grid; gap: 4px; font-size: .9rem; color: var(--muted); }
input, select, textarea {
  font: inherit; color: var(--fg); background: var(--bg);
  border: 1px solid var(--line); border-radius: 8px; padding: 10px; width: 100%; min-width: 0;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
input:user-invalid, input.bad { border-color: var(--danger); }

button { font: inherit; cursor: pointer; }
.primary {
  background: var(--accent); color: #fff; border: 0; border-radius: 8px; padding: 12px 16px; font-weight: 600;
}
.ghost { background: transparent; border: 1px solid var(--line); color: var(--fg); border-radius: 8px; padding: 10px 14px; }
.danger { color: var(--danger); }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.actions .primary { flex: 1; }

.row { display: flex; gap: 12px; align-items: end; flex-wrap: wrap; }
.grow { flex: 1 1 140px; }

.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.seg label { display: block; color: var(--fg); }
.seg input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.seg label > span { display: block; padding: 10px 14px; cursor: pointer; white-space: nowrap; }
.seg input:checked + span { background: var(--accent); color: #fff; font-weight: 600; }
.seg .cnt { margin-left: 6px; padding: 0 6px; border-radius: 999px; font-size: .8em; background: var(--ok); color: #fff; }
.seg input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: -2px; }

.round {
  border: 1px solid var(--line); border-radius: 10px; margin: 0; padding: 8px 10px 10px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px;
}
.round legend { font-size: .85rem; color: var(--muted); padding: 0 4px; }
.round input { text-align: center; font-size: 1.15rem; font-variant-numeric: tabular-nums; }
#rounds { display: grid; gap: 10px; }

.quick { display: flex; gap: 6px; flex-wrap: wrap; }
.quick button { background: var(--bg); border: 1px solid var(--line); color: var(--fg); border-radius: 999px; padding: 6px 12px; font-size: .9rem; }

.msg { margin: 0; min-height: 1.2em; font-size: .9rem; }
.msg.ok { color: var(--ok); }
.msg.err { color: var(--danger); }

.hint { margin: 0; font-size: .85rem; color: var(--muted); }
.between { justify-content: space-between; align-items: center; }
label.check { display: flex; gap: 8px; align-items: center; color: var(--fg); }
label.check input { width: auto; }

.table-wrap { overflow-x: auto; }
table.users { width: 100%; border-collapse: collapse; font-size: .9rem; }
table.users th, table.users td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); white-space: nowrap; }
table.users th { color: var(--muted); font-weight: 600; }
table.users td.off { color: var(--danger); }
table.users td.who { white-space: normal; }
table.users td.who b, table.users td.who span { display: block; }
table.users td.who span { color: var(--muted); font-size: .85rem; }
table.users button { padding: 4px 10px; }
@media (max-width: 420px) {
  table.users button { padding: 6px; }
  table.users button .label { display: none; }
}

.recent { display: grid; gap: 2px; font-size: .9rem; font-variant-numeric: tabular-nums; }
/* Morning over evening, so each list of three readings has a full line. */
.recent .day {
  display: grid; grid-template-columns: 6.5em 1fr; gap: 2px 8px; align-items: baseline;
  padding: 6px 4px; border-bottom: 1px solid var(--line); background: none; border-left: 0; border-right: 0; border-top: 0;
  color: inherit; text-align: left;
}
.recent .day:last-child { border-bottom: 0; }
.recent .d { font-weight: 600; grid-row: span 2; }
.recent .s { color: var(--muted); }
.recent .empty { color: var(--muted); }

/* Wide screens: a wider page, and the cards of a view side by side. All sizes
   are in rem or em, so a bigger root font makes the whole app bigger and
   easier to read on laptops and desktop screens. Keep this block last. */
@media (min-width: 960px) {
  html { font-size: 18px; }
  .bar { padding-left: max(24px, calc((100vw - 66rem) / 2)); padding-right: max(24px, calc((100vw - 66rem) / 2)); }
  main { max-width: 66rem; padding: 28px 24px 40px; }
  .card { padding: 22px 24px; }
  #view-log, #view-settings {
    display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px; align-items: start;
  }
  #view-log .card, #view-settings .card { margin-bottom: 0; }
  #view-settings > .card:last-child { grid-column: 1 / -1; justify-items: end; }
  #view-login, #view-report { max-width: 34rem; margin: 0 auto; }
  .recent { font-size: .95rem; }
}
@media (min-width: 1400px) {
  html { font-size: 20px; }
}