/* Interactive Plate Builder: calm, high-contrast, mobile first */
:root {
  --bg: #f6f3ec;
  --surface: #ffffff;
  --surface-2: #f0ece2;
  --ink: #1d2721;
  --muted: #4a564e;
  --line: #d6cfc0;
  --brand: #2f6b3f;
  --brand-ink: #ffffff;
  --brand-soft: #e2eee2;
  --focus: #1f5fbf;
  --produce: #3f8f4f;
  --protein: #a4532c;
  --carb: #c9962a;
  --extra: #8a8f87;
  --produce-ink: #24622f;
  --protein-ink: #8a4220;
  --carb-ink: #7a5a0d;
  --good-bg: #e4f1e3;
  --good-line: #6aa874;
  --add-bg: #fdf3dd;
  --add-line: #d2a33f;
  --tip-bg: #eef0f6;
  --tip-line: #8c97b8;
  --plate-rim: #e7e1d4;
  --plate-empty: #f3efe6;
  --shadow: 0 1px 2px rgba(40, 35, 20, 0.06), 0 2px 10px rgba(40, 35, 20, 0.05);
  --radius: 14px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121814;
    --surface: #1b231e;
    --surface-2: #232d27;
    --ink: #edf2ec;
    --muted: #b7c2ba;
    --line: #36423a;
    --brand: #86c995;
    --brand-ink: #10241a;
    --brand-soft: #22382a;
    --focus: #8ab4ff;
    --produce: #6dbb7c;
    --protein: #d98a62;
    --carb: #e2b955;
    --extra: #9aa197;
    --produce-ink: #8fd39d;
    --protein-ink: #f0a985;
    --carb-ink: #f0cd7a;
    --good-bg: #1f3325;
    --good-line: #5f9d6a;
    --add-bg: #352c17;
    --add-line: #b98f37;
    --tip-bg: #232838;
    --tip-line: #6d789a;
    --plate-rim: #39443c;
    --plate-empty: #252f29;
    --shadow: none;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #121814; --surface: #1b231e; --surface-2: #232d27; --ink: #edf2ec; --muted: #b7c2ba;
  --line: #36423a; --brand: #86c995; --brand-ink: #10241a; --brand-soft: #22382a; --focus: #8ab4ff;
  --produce: #6dbb7c; --protein: #d98a62; --carb: #e2b955; --extra: #9aa197;
  --produce-ink: #8fd39d; --protein-ink: #f0a985; --carb-ink: #f0cd7a;
  --good-bg: #1f3325; --good-line: #5f9d6a; --add-bg: #352c17; --add-line: #b98f37;
  --tip-bg: #232838; --tip-line: #6d789a; --plate-rim: #39443c; --plate-empty: #252f29;
  --shadow: none; color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.55;
  overflow-wrap: break-word;
}
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 0.5rem; }
h2 { font-size: 1.3rem; }
h3 { font-size: 1.12rem; }
h4 { font-size: 1rem; }
p { margin: 0 0 0.75rem; }
cite { font-style: italic; }
button, input, select { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

.wrap { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 16px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--surface); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; top: 8px; }

/* Header */
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); }
.site-header .wrap:first-child { padding-top: 18px; padding-bottom: 6px; }
.site-header h1 { font-size: 1.55rem; color: var(--brand); margin: 0; letter-spacing: -0.01em; }
.subtitle { color: var(--muted); margin: 2px 0 0; font-size: 1rem; }
.tablist { display: flex; gap: 4px; margin-top: 10px; }
.tablist [role="tab"] {
  flex: 1 1 0; min-height: 48px; border: 0; background: transparent; cursor: pointer;
  border-bottom: 3px solid transparent; padding: 8px 6px; font-weight: 600; color: var(--muted);
  font-size: 1rem;
}
.tablist [role="tab"][aria-selected="true"] { color: var(--ink); border-bottom-color: var(--brand); }
.tablist [role="tab"]:hover { color: var(--ink); }

main { padding-top: 16px; padding-bottom: 24px; }
[role="tabpanel"]:focus { outline: none; }

.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px; margin-bottom: 16px; box-shadow: var(--shadow);
}

/* Method box */
.method { background: var(--brand-soft); border-color: transparent; }
.method-title { font-size: 1.15rem; }
.order-steps { list-style: none; margin: 0 0 10px; padding: 0; display: grid; gap: 8px; }
.order-steps li { display: flex; gap: 10px; align-items: flex-start; }
.step-num {
  flex: 0 0 auto; width: 30px; height: 30px; border-radius: 50%; display: inline-grid; place-items: center;
  font-weight: 700; color: #fff; font-size: 0.95rem; margin-top: 1px;
}
.s1 { background: var(--produce-ink); }
.s2 { background: var(--protein-ink); }
.s3 { background: var(--carb-ink); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .step-num { color: #10241a; } }
:root[data-theme="dark"] .step-num { color: #10241a; }
.add-first { margin: 0; }

/* Layout */
.builder { display: grid; gap: 16px; }
.builder .card { margin-bottom: 0; }
@media (min-width: 900px) {
  .builder { grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); align-items: start; }
  .plate-area { position: sticky; top: 12px; max-height: calc(100vh - 24px); overflow-y: auto; }
}

/* Fields */
.field { display: flex; flex-direction: column; gap: 4px; margin-bottom: 12px; min-width: 0; }
.field label { font-weight: 600; }
input[type="search"], input[type="number"], select {
  width: 100%; min-height: 48px; padding: 10px 12px; border: 2px solid var(--line); border-radius: 10px;
  background: var(--surface); color: var(--ink);
}
input:focus, select:focus { border-color: var(--brand); }
select { appearance: auto; }

/* Buttons */
.btn {
  min-height: 48px; padding: 10px 16px; border-radius: 10px; border: 2px solid var(--brand);
  background: var(--brand); color: var(--brand-ink); font-weight: 600; cursor: pointer;
}
.btn:hover { filter: brightness(1.06); }
.btn-quiet { background: transparent; color: var(--brand); }
.btn-small { min-height: 44px; padding: 6px 12px; }

/* Food list */
.result-count { color: var(--muted); font-size: 0.95rem; margin-bottom: 6px; }
.food-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.food-row { display: flex; gap: 10px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--line); }
.food-main { flex: 1 1 auto; min-width: 0; }
.food-name { font-weight: 600; display: block; }
.food-us { font-weight: 400; color: var(--muted); }
.food-portion { color: var(--muted); font-size: 0.95rem; display: block; }
.food-nums { font-size: 0.92rem; color: var(--muted); display: flex; flex-wrap: wrap; gap: 2px 12px; margin-top: 2px; }
.food-nums b { color: var(--ink); font-weight: 600; }
.tag { display: inline-block; font-size: 0.8rem; font-weight: 600; padding: 1px 8px; border-radius: 999px; margin-top: 4px; margin-right: 4px; border: 1px solid currentColor; }
.tag.produce { color: var(--produce-ink); }
.tag.protein { color: var(--protein-ink); }
.tag.carb { color: var(--carb-ink); }
.tag.extra { color: var(--muted); }
.add-btn { flex: 0 0 auto; min-width: 76px; }
.more { width: 100%; margin-top: 12px; }
.label-note { font-size: 0.92rem; color: var(--muted); margin: 12px 0 0; }

/* Plate */
.plate-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 8px; }
.plate-head h2 { margin: 0; }
.plate-visual { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin-bottom: 10px; }
#plate-svg { width: 190px; height: 190px; flex: 0 0 auto; max-width: 100%; }
.legend { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; flex: 1 1 140px; min-width: 0; }
.legend li { display: flex; align-items: center; gap: 8px; }
.swatch { width: 18px; height: 18px; border-radius: 4px; flex: 0 0 auto; }
.sw-produce { background: var(--produce); }
.sw-protein { background: var(--protein); }
.sw-carb { background: var(--carb); }
.sw-extra { background: var(--extra); }
.legend .pct { margin-left: auto; font-weight: 700; font-variant-numeric: tabular-nums; }

.totals { background: var(--surface-2); border-radius: 12px; padding: 12px; margin-bottom: 14px; }
.totals-h { font-size: 1rem; margin-bottom: 8px; }
.totals-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin: 0; }
.total { background: var(--surface); border-radius: 10px; padding: 8px; border: 1px solid var(--line); min-width: 0; }
.total dt { font-weight: 600; font-size: 0.95rem; }
.dt-note { display: block; font-weight: 400; font-size: 0.78rem; color: var(--muted); line-height: 1.3; }
.total dd { margin: 4px 0 0; font-size: 1.35rem; font-weight: 700; font-variant-numeric: tabular-nums; }

.plate-items { display: grid; gap: 12px; margin-bottom: 14px; }
.item-group h3 { font-size: 1rem; display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.item-group .step-num { width: 26px; height: 26px; font-size: 0.85rem; }
.step-x { background: var(--extra); }
.empty-group { color: var(--muted); font-size: 0.95rem; margin: 0 0 4px; }
.plate-item { border: 1px solid var(--line); border-radius: 12px; padding: 10px; margin-bottom: 8px; background: var(--surface); }
.pi-top { display: flex; justify-content: space-between; gap: 8px; align-items: flex-start; }
.pi-name { font-weight: 600; min-width: 0; }
.pi-remove { min-height: 44px; min-width: 44px; padding: 4px 10px; border-radius: 10px; border: 1px solid var(--line); background: transparent; cursor: pointer; color: var(--muted); font-weight: 600; flex: 0 0 auto; }
.pi-remove:hover { color: var(--ink); border-color: var(--ink); }
.pi-controls { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-top: 8px; }
.seg { display: flex; border: 2px solid var(--brand); border-radius: 10px; overflow: hidden; }
.seg button { min-height: 44px; min-width: 64px; padding: 4px 8px; border: 0; background: transparent; color: var(--brand); font-weight: 600; cursor: pointer; }
.seg button + button { border-left: 2px solid var(--brand); }
.seg button[aria-pressed="true"] { background: var(--brand); color: var(--brand-ink); }
.grams { display: flex; align-items: center; gap: 6px; }
.grams input { width: 84px; min-height: 44px; padding: 6px 8px; }
.pi-nums { font-size: 0.92rem; color: var(--muted); margin-top: 6px; display: flex; flex-wrap: wrap; gap: 2px 12px; }
.pi-nums b { color: var(--ink); }

/* Feedback */
.feedback h3, .swaps h3 { margin-top: 4px; }
.fb { border-radius: 12px; padding: 10px 12px; margin-bottom: 8px; border: 1px solid; }
.fb-good { background: var(--good-bg); border-color: var(--good-line); }
.fb-add { background: var(--add-bg); border-color: var(--add-line); }
.fb-tip { background: var(--tip-bg); border-color: var(--tip-line); }
.fb-kind { display: block; font-size: 0.82rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }
.fb p { margin: 2px 0 0; }
.fb .btn { margin-top: 8px; }
.quick { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }

.swaps-intro { color: var(--muted); font-size: 0.95rem; }
.swap-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.swap { border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; justify-content: space-between; }
.swap p { margin: 0; flex: 1 1 200px; min-width: 0; }
.swap .why { display: block; color: var(--muted); font-size: 0.92rem; }

.save-status { color: var(--muted); font-size: 0.92rem; margin: 10px 0 0; }

.toast {
  position: fixed; left: 50%; bottom: 16px; transform: translateX(-50%) translateY(calc(100% + 32px));
  background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 10px; max-width: calc(100% - 32px);
  transition: transform 0.2s ease, visibility 0.2s; z-index: 20; font-weight: 600; pointer-events: none;
  visibility: hidden;
}
.toast.show { transform: translateX(-50%) translateY(0); visibility: visible; }
@media (prefers-reduced-motion: reduce) { .toast { transition: none; } }

/* Converter */
.intro-card .caution { background: var(--add-bg); border: 1px solid var(--add-line); border-radius: 10px; padding: 10px 12px; margin: 0; }
.conv-row { display: grid; grid-template-columns: minmax(0, 1fr); gap: 0; align-items: end; }
.equals { display: none; }
@media (min-width: 620px) {
  .conv-row { grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); gap: 12px; }
  .equals { display: block; font-size: 1.5rem; font-weight: 700; padding-bottom: 20px; color: var(--muted); }
}
.ranges { display: grid; gap: 10px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 620px) { .ranges { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.range-box { border: 1px solid var(--line); border-radius: 12px; padding: 12px; background: var(--surface-2); min-width: 0; }
.range-result { font-weight: 600; }
.range-box[data-level="below"] { border-color: var(--good-line); }
.range-box[data-level="risk"] { border-color: var(--add-line); background: var(--add-bg); }
.range-box[data-level="high"] { border-color: var(--protein); }
.range-def { color: var(--muted); font-size: 0.95rem; margin: 0; }
.formula { color: var(--muted); font-size: 0.92rem; margin: 12px 0 0; }

/* About */
.prose ol { padding-left: 1.3rem; }
.prose li { margin-bottom: 4px; }
.data-meta { color: var(--muted); font-size: 0.92rem; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); background: var(--surface); padding: 14px 0 18px; }
.disclaimer { margin: 0; font-size: 0.98rem; color: var(--ink); }
.noscript { padding: 16px; }

@media (max-width: 520px) {
  .totals-grid { grid-template-columns: minmax(0, 1fr); gap: 6px; }
  .total { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 8px 10px; }
  .total dd { margin: 0; flex: 0 0 auto; }
}
@media (max-width: 380px) {
  .site-header h1 { font-size: 1.4rem; }
  .seg button { min-width: 58px; padding: 4px 6px; }
}

/* Plate SVG */
.plate-rim { fill: var(--plate-rim); }
.plate-face { fill: var(--plate-empty); }
.sec { stroke: var(--surface); stroke-width: 2; }
.sec-produce { fill: var(--produce); }
.sec-protein { fill: var(--protein); }
.sec-carb { fill: var(--carb); }
.sec-label { font-size: 20px; font-weight: 700; fill: #ffffff; paint-order: stroke; stroke: rgba(0, 0, 0, 0.45); stroke-width: 3px; }
.plate-empty-text { font-size: 16px; fill: var(--muted); }
.legend-note { color: var(--muted); font-size: 0.88rem; }
.jump { display: inline-flex; align-items: center; min-height: 44px; font-weight: 600; color: var(--brand); margin-bottom: 8px; }
@media (min-width: 900px) { .jump { display: none; } }
.pi-source { font-size: 0.82rem; color: var(--muted); margin: 6px 0 0; }