:root {
  --bg: #0f1216;
  --panel: #171b21;
  --panel-2: #1e242c;
  --line: #2a323c;
  --text: #e6eaef;
  --muted: #8a95a3;
  --accent: #5aa9e6;
  --good: #6fcf7f;
  --bad: #e6725a;
  --radius: 12px;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f6f8; --panel: #fff; --panel-2: #eef1f5; --line: #d9dfe6;
    --text: #161a1f; --muted: #5d6874; --accent: #1f6fb2;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding-bottom: env(safe-area-inset-bottom);
}

h1 { font-size: 1.4rem; margin: 0 0 1rem; }
h2 { font-size: 1rem; margin: 0 0 .6rem; letter-spacing: .01em; }
h3 { font-size: .85rem; text-transform: uppercase; letter-spacing: .06em;
     color: var(--muted); margin: 1.2rem 0 .4rem; }
p { margin: .4rem 0; }
.muted { color: var(--muted); font-size: .85rem; }
.error { color: var(--bad); }
.good { color: var(--good); }
.bad { color: var(--bad); }

.screen { max-width: 640px; margin: 0 auto; padding: 0 .75rem; }

header {
  display: flex; align-items: center; gap: .5rem;
  padding: .75rem 0 .5rem; position: sticky; top: 0; z-index: 5;
  background: var(--bg);
}
header button {
  width: 2.5rem; min-height: 2.5rem; font-size: 1.4rem; line-height: 1;
  background: var(--panel); border: 1px solid var(--line); color: var(--text);
}
.date-wrap { flex: 1; display: flex; flex-direction: column; align-items: center; }
.date-wrap input[type=date] { width: 100%; text-align: center; }
#date-label { font-size: .8rem; color: var(--muted); }

.tabs { display: flex; gap: .25rem; margin-bottom: .75rem; overflow-x: auto; }
.tabs button {
  flex: 1; padding: .55rem .4rem; font-size: .9rem; white-space: nowrap;
  background: var(--panel); border: 1px solid var(--line); color: var(--muted);
}
.tabs button.active { color: var(--text); border-color: var(--accent); background: var(--panel-2); }

.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: .9rem; margin-bottom: .75rem;
}

label { display: block; margin-bottom: .6rem; font-size: .9rem; }
label.stack { display: flex; flex-direction: column; gap: .2rem; font-size: .8rem; color: var(--muted); }
input, select, textarea, button {
  font: inherit; color: var(--text); background: var(--panel-2);
  border: 1px solid var(--line); border-radius: 8px; padding: .55rem .6rem;
  width: 100%; min-height: 2.75rem;   /* comfortable tap target */
}
textarea { min-height: 3rem; resize: vertical; }
input:focus-visible, select:focus-visible, textarea:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 1px;
}
button {
  background: var(--accent); border-color: transparent; color: #06121c;
  font-weight: 600; cursor: pointer;
}
button.secondary { background: var(--panel-2); color: var(--text); border-color: var(--line); font-weight: 500; }
button.link {
  background: none; border: none; color: var(--accent); width: auto;
  min-height: auto; padding: .2rem .3rem; font-weight: 500;
}
button.link.danger { color: var(--bad); }

.row { display: flex; gap: .5rem; margin-bottom: .5rem; }
.row > * { flex: 1; }
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .5rem; margin-bottom: .5rem; }

.scales label { display: flex; align-items: center; gap: .6rem; }
.scales input[type=range] { flex: 1; min-height: 2rem; padding: 0; background: none; border: none; }
.scales output { width: 1.6rem; text-align: right; color: var(--muted); font-variant-numeric: tabular-nums; }

details { border-top: 1px solid var(--line); margin-top: .6rem; padding-top: .6rem; }
summary { cursor: pointer; color: var(--accent); font-size: .9rem; padding: .3rem 0; }

.item-row { display: flex; gap: .35rem; margin-bottom: .4rem; align-items: center; }
.item-row input, .item-row select { min-height: 2.5rem; }
.item-row .food-name, .item-row .set-ex { flex: 3; min-width: 0; }
.item-row .food-group { flex: 2; min-width: 0; }
.item-row .food-grams, .item-row .food-srv,
.item-row .set-reps, .item-row .set-wt { flex: 1; min-width: 3.5rem; }
.item-row .link { flex: 0 0 auto; }

.entry { border-top: 1px solid var(--line); padding: .55rem 0; }
.entry:first-child { border-top: none; }
.entry-head { display: flex; align-items: center; gap: .4rem; }
.entry-head .link { margin-left: auto; }
.items { list-style: none; margin: .35rem 0 0; padding: 0; font-size: .9rem; }
.items li { padding: .12rem 0; color: var(--muted); }

.tag {
  display: inline-block; font-size: .68rem; text-transform: uppercase;
  letter-spacing: .04em; padding: .05rem .35rem; border-radius: 4px;
  background: var(--panel-2); border: 1px solid var(--line); color: var(--muted);
}
.tag.protein { color: #e6725a; } .tag.carb { color: #e6c65a; }
.tag.fat { color: #b48ae6; } .tag.vegetable { color: #6fcf7f; }

.badge { color: var(--muted); font-weight: 400; font-size: .85rem; }

table { width: 100%; border-collapse: collapse; font-size: .85rem; }
th { text-align: left; color: var(--muted); font-weight: 500; font-size: .75rem;
     text-transform: uppercase; letter-spacing: .04em; padding: .3rem .35rem; }
td { padding: .3rem .35rem; border-top: 1px solid var(--line); font-variant-numeric: tabular-nums; }
td.num { text-align: right; color: var(--muted); }

.spark-wrap { margin-bottom: 1rem; }
.spark-head { display: flex; justify-content: space-between; align-items: baseline;
              font-size: .9rem; margin-bottom: .2rem; }
.spark { width: 100%; height: auto; display: block; }
.streak { font-size: 1.1rem; font-weight: 600; margin: 0 0 .6rem; }

footer {
  display: flex; justify-content: space-between; align-items: center;
  padding: 1rem 0 2rem; border-top: 1px solid var(--line); margin-top: 1rem;
}

#login { display: flex; align-items: center; min-height: 100dvh; }
#login .card { width: 100%; }
#login button { margin-top: .5rem; }