:root {
  color-scheme: light;
  --bg: #f4f5f3;
  --card: #ffffff;
  --ink: #14201e;
  --muted: #5f6b68;
  --line: #dfe4e1;
  --accent: #0f766e;
  --accent-ink: #ffffff;
  --tom: #2a78d6;
  --noa: #eb6834;
  --err: #b42318;
  --soft: #e8f1ef;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #101514;
    --card: #19201f;
    --ink: #eef3f1;
    --muted: #9aa8a4;
    --line: #2a3432;
    --accent: #2dd4bf;
    --accent-ink: #062623;
    --tom: #3987e5;
    --noa: #d95926;
    --err: #ff8a80;
    --soft: #1f2b29;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); }
body { font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-text-size-adjust: 100%; }
[hidden] { display: none !important; }

header { position: sticky; top: 0; z-index: 5; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 8px;
  padding: calc(env(safe-area-inset-top) + 10px) 16px 10px; background: var(--bg); border-bottom: 1px solid var(--line); }
header .title { font-weight: 700; letter-spacing: .02em; }
header #sync { text-align: right; }
.who { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; }
.who i { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }

main { padding: 12px 16px calc(84px + env(safe-area-inset-bottom)); max-width: 640px; margin: 0 auto; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px; margin-bottom: 12px; }
.card.narrow { max-width: 360px; margin: 18vh auto 0; }
h1 { margin: 0 0 4px; font-size: 28px; }
h2 { margin: 0 0 10px; font-size: 17px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.err { color: var(--err); min-height: 1.4em; margin: 8px 0 0; }

label, .field { display: block; margin: 0 0 12px; font-size: 14px; color: var(--muted); }
label.check { display: flex; align-items: center; gap: 10px; color: var(--ink); font-size: 16px; }
input[type=text], input[type=number], input[type=date], input[type=password], select, textarea {
  width: 100%; margin-top: 4px; padding: 11px 12px; font: inherit; color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 10px; }
textarea { resize: vertical; }
input[type=checkbox] { width: 22px; height: 22px; accent-color: var(--accent); }
input:focus, select:focus, textarea:focus, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
@media (max-width: 380px) { .grid3 { grid-template-columns: 1fr 1fr; } }

button { font: inherit; cursor: pointer; }
button.primary, button.secondary { width: 100%; padding: 13px; border-radius: 10px; border: 1px solid var(--accent); font-weight: 600; }
button.primary { background: var(--accent); color: var(--accent-ink); }
button.secondary { background: transparent; color: var(--accent); margin-top: 8px; }
button:disabled { opacity: .55; cursor: default; }

.seg { display: flex; gap: 6px; margin-top: 6px; }
.seg button { flex: 1; padding: 11px 0; border-radius: 10px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); }
.seg button.on { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.seg.five button { padding: 12px 0; }

nav { position: fixed; left: 0; right: 0; bottom: 0; display: grid; grid-template-columns: repeat(5, 1fr);
  background: var(--card); border-top: 1px solid var(--line); padding-bottom: env(safe-area-inset-bottom); }
nav button { border: 0; background: transparent; color: var(--muted); padding: 14px 0; font-size: 13px; font-weight: 600; }
nav button.on { color: var(--accent); box-shadow: inset 0 3px 0 var(--accent); }

.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.stat { background: var(--soft); border-radius: 10px; padding: 10px 12px; }
.stat b { display: block; font-size: 22px; }
.stat span { font-size: 12px; color: var(--muted); }

.bf { background: var(--soft); border-radius: 10px; padding: 10px 12px; margin-bottom: 12px; font-size: 14px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 7px 4px; border-bottom: 1px solid var(--line); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.up { color: var(--ink); } .dn { color: var(--ink); }

.chart svg { width: 100%; height: auto; display: block; touch-action: pan-y; }
.chart text { fill: var(--muted); font-size: 11px; }
.chart .tip { font-size: 12px; }

.chat { padding: 12px; }
.chatlog { min-height: 200px; max-height: 52vh; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; padding: 4px; }
.msg { padding: 10px 12px; border-radius: 12px; max-width: 88%; white-space: pre-wrap; word-wrap: break-word; }
.msg.user { align-self: flex-end; background: var(--accent); color: var(--accent-ink); }
.msg.bot { align-self: flex-start; background: var(--soft); }
.msg.err { background: transparent; border: 1px solid var(--err); color: var(--err); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0; }
.chips button { border: 1px solid var(--line); background: var(--bg); color: var(--ink); border-radius: 999px; padding: 7px 12px; font-size: 13px; }
.chatbar { display: flex; gap: 8px; }
.chatbar input { margin: 0; flex: 1; padding: 11px 12px; font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 10px; }
.chatbar button { width: auto; padding: 0 18px; }

/* sign-in */
.gbtn { display: flex; justify-content: center; min-height: 44px; margin: 14px 0 6px; }

/* menu */
#menuWho { margin-bottom: 12px; }
.meal { display: grid; grid-template-columns: 78px 1fr; gap: 8px; padding: 8px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.meal:last-child { border-bottom: 0; }
.meal b { color: var(--muted); font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: .03em; padding-top: 2px; }
.meal span { white-space: pre-wrap; word-wrap: break-word; }
.meal .empty { color: var(--muted); }
details.day { border: 1px solid var(--line); border-radius: 10px; margin-bottom: 8px; background: var(--bg); }
details.day > summary { list-style: none; cursor: pointer; padding: 12px; font-weight: 600; display: flex; justify-content: space-between; }
details.day > summary::-webkit-details-marker { display: none; }
details.day > summary .muted { font-weight: 400; font-size: 13px; }
details.day .body { padding: 0 12px 12px; }
details.day.today { border-color: var(--accent); }
details.day textarea { min-height: 56px; }

/* weekly review */
.review { margin-top: 12px; padding: 12px; border-radius: 10px; background: var(--soft); white-space: pre-wrap; word-wrap: break-word; font-size: 15px; }
.review .when { display: block; margin-bottom: 6px; color: var(--muted); font-size: 12px; }