:root {
  --bg: #f3f6f1;
  --card: #ffffff;
  --ink: #1d2a22;
  --muted: #5d6b62;
  --line: #e0e7df;
  --green: #2e7d4f;
  --green-dark: #1f5c39;
  --green-soft: #e7f3ec;
  --low: #43a047;
  --med: #f0a32a;
  --high: #e0533d;
  --shadow: 0 2px 10px rgba(20, 50, 30, .07);
  --radius: 14px;
  font-size: 17px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
}
.wrap { width: min(820px, 92vw); margin: 0 auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.hidden { display: none !important; }

/* header */
.site-header { background: linear-gradient(135deg, var(--green), var(--green-dark)); color: #fff; padding: 30px 0 26px; }
.logo { margin: 0; font-size: 2rem; letter-spacing: -.5px; }
.tagline { margin: 6px 0 0; opacity: .92; font-size: 1.05rem; }

main { padding: 26px 0 10px; }

/* cards */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; }
.input-card { margin-bottom: 22px; }

/* tabs */
.tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.tab { flex: 1; padding: 11px; border: 1px solid var(--line); background: #f7faf6; color: var(--muted);
  border-radius: 10px; font-size: 1rem; cursor: pointer; transition: .15s; }
.tab.active { background: var(--green-soft); color: var(--green-dark); border-color: var(--green); font-weight: 600; }

textarea, input[type="url"], select {
  width: 100%; padding: 13px; border: 1px solid var(--line); border-radius: 10px;
  font-size: 1rem; font-family: inherit; color: var(--ink); background: #fcfdfc; resize: vertical;
}
textarea:focus, input:focus, select:focus { outline: 2px solid var(--green); border-color: var(--green); }
.hint { color: var(--muted); font-size: .88rem; margin: 8px 2px 0; }

.controls { display: flex; justify-content: space-between; align-items: end; gap: 14px; margin-top: 16px; flex-wrap: wrap; }
.cuisine-pick { display: flex; flex-direction: column; gap: 4px; }
.cuisine-pick label { font-size: .8rem; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.cuisine-pick select { width: auto; min-width: 150px; padding: 9px 12px; }
.cuisine-pick input[type="number"] { width: 90px; padding: 9px 12px; }

/* recipe footprint */
.footprint { margin: 14px 0 4px; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.fp-row { display: flex; align-items: baseline; gap: 12px; padding: 12px 16px; flex-wrap: wrap; }
.fp-row.swap { background: var(--green-soft); }
.fp-lbl { flex: 1; color: var(--muted); font-size: .9rem; min-width: 130px; }
.fp-now, .fp-new { font-size: 1.3rem; font-weight: 700; }
.fp-new { color: var(--green-dark); }
.fp-sub { color: var(--muted); font-size: .82rem; }
.fp-save { background: var(--green); color: #fff; font-weight: 700; padding: 2px 10px; border-radius: 999px; font-size: .95rem; }
.actions { display: flex; gap: 10px; }

.btn { padding: 12px 20px; border-radius: 10px; font-size: 1rem; font-weight: 600; cursor: pointer; border: 1px solid transparent; transition: .15s; }
.btn.primary { background: var(--green); color: #fff; }
.btn.primary:hover { background: var(--green-dark); }
.btn.ghost { background: #fff; color: var(--green-dark); border-color: var(--green); }
.btn.ghost:hover { background: var(--green-soft); }

/* summary */
.summary { margin-bottom: 18px; }
.summary h2 { margin: 0 0 6px; font-size: 1.25rem; }
.summary .headline { font-size: 1.05rem; }
.summary .headline strong { color: var(--green-dark); }
.summary .stats { display: flex; gap: 22px; margin-top: 14px; flex-wrap: wrap; }
.summary .stat { display: flex; flex-direction: column; }
.summary .stat .num { font-size: 1.5rem; font-weight: 700; color: var(--green-dark); }
.summary .stat .lbl { font-size: .82rem; color: var(--muted); }

/* sort toggle */
.sort-bar { display: flex; align-items: center; gap: 12px; margin: 4px 2px 14px; flex-wrap: wrap; }
.sort-label { font-size: .85rem; color: var(--muted); }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; background: #fff; overflow: hidden; }
.segbtn { border: none; background: transparent; padding: 8px 16px; font-size: .9rem; cursor: pointer; color: var(--muted); }
.segbtn.active { background: var(--green); color: #fff; font-weight: 600; }

/* ingredient rows */
.ingredient-list { display: flex; flex-direction: column; gap: 10px; }
.ing { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.ing-head { display: grid; grid-template-columns: 1fr auto; gap: 12px 16px; align-items: center; padding: 15px 18px; cursor: pointer; }
.ing-head.nodata { cursor: default; }
.ing-title { display: flex; align-items: center; gap: 10px; }
.ing-name { font-size: 1.1rem; font-weight: 600; text-transform: capitalize; }
.badge { font-size: .72rem; padding: 3px 9px; border-radius: 999px; font-weight: 600; }
.badge.low { background: #e6f4ea; color: #2e7d4f; }
.badge.high { background: #fdeceA; color: var(--high); background: #fbe9e6; }
.badge.nodata { background: #eef0ee; color: var(--muted); }
.badge.swaps { background: var(--green-soft); color: var(--green-dark); }
.chevron { font-size: .9rem; color: var(--muted); transition: transform .2s; }
.ing.open .chevron { transform: rotate(180deg); }

/* metric meters */
.metrics { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.metric { font-size: .78rem; }
.metric .mlabel { display: flex; justify-content: space-between; color: var(--muted); margin-bottom: 3px; }
.metric .mval { color: var(--ink); font-weight: 600; }
.bar { height: 7px; background: #eef1ee; border-radius: 4px; overflow: hidden; }
.bar > span { display: block; height: 100%; border-radius: 4px; }
.lvl-low > span { background: var(--low); }
.lvl-med > span { background: var(--med); }
.lvl-high > span { background: var(--high); }

/* expansion */
.subs { border-top: 1px dashed var(--line); padding: 6px 18px 16px; background: #fbfdfb; }
.subs h4 { margin: 14px 2px 10px; font-size: .9rem; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.sub { display: grid; grid-template-columns: 1.2fr 2fr auto; gap: 12px; align-items: center; padding: 11px 12px; border: 1px solid var(--line); border-radius: 10px; margin-bottom: 8px; background: #fff; }
.sub .sub-name { font-weight: 600; text-transform: capitalize; }
.sub .sub-name .rank { display: inline-block; width: 22px; height: 22px; line-height: 22px; text-align: center; background: var(--green); color: #fff; border-radius: 50%; font-size: .78rem; margin-right: 8px; }
.sub .deltas { display: flex; gap: 14px; flex-wrap: wrap; font-size: .82rem; color: var(--muted); }
.sub .submeta { font-size: .75rem; color: var(--muted); margin-top: 4px; opacity: .85; }
.nutricost { grid-column: 1 / -1; font-size: .78rem; color: var(--muted); margin-top: 4px; }
.nutricost .src { opacity: .6; }
.sub .deltas b { color: var(--green-dark); }
.sub .right { display: flex; flex-direction: column; gap: 6px; align-items: end; }
.sub .match { width: 130px; }
.sub .match .match-label { display: flex; justify-content: space-between; font-size: .72rem; color: var(--muted); margin-bottom: 3px; }
.sub .mbar { height: 6px; background: #eef1ee; border-radius: 4px; overflow: hidden; }
.sub .mbar > span { display: block; height: 100%; background: #6b8cef; border-radius: 4px; }
.sub .tags { display: flex; gap: 6px; align-items: center; justify-content: end; flex-wrap: wrap; }
.tag { font-size: .72rem; padding: 3px 8px; border-radius: 999px; background: #eef4ef; color: var(--muted); }
.tag.cuisine { background: var(--green-soft); color: var(--green-dark); }
.tag.cost-down { background: #e6f4ea; color: #2e7d4f; }
.no-swap { color: var(--muted); padding: 12px 2px; font-size: .92rem; }

.data-note { color: var(--muted); font-size: .85rem; margin-top: 14px; }
.site-footer { color: var(--muted); font-size: .8rem; padding: 26px 0 40px; }
.site-footer p { border-top: 1px solid var(--line); padding-top: 16px; }

@media (max-width: 560px) {
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .sub { grid-template-columns: 1fr; }
  .sub .tags { justify-content: start; }
  .controls { flex-direction: column; align-items: stretch; }
  .actions { justify-content: stretch; }
  .actions .btn { flex: 1; }
}