/* The boomerang on your plate — design system. Subject: customs stamps, turmeric, shipping crates, lab chromatograms. */

@font-face { font-family: "Fraunces"; src: url("fonts/fraunces-normal-latin.woff2") format("woff2"); font-weight: 400 900; font-display: swap; }
@font-face { font-family: "Fraunces"; src: url("fonts/fraunces-normal-latin-ext.woff2") format("woff2"); font-weight: 400 900; font-display: swap; unicode-range: U+0100-02AF, U+0300-036F; }
@font-face { font-family: "Fraunces"; font-style: italic; src: url("fonts/fraunces-italic-az.woff2") format("woff2"); font-weight: 400 900; font-display: swap; }
@font-face { font-family: "Fraunces"; font-style: italic; src: url("fonts/fraunces-italic-ro.woff2") format("woff2"); font-weight: 400 900; font-display: swap; unicode-range: U+0100-02AF, U+0300-036F; }
@font-face { font-family: "Plex Sans"; src: url("fonts/IBMPlexSans-latin.woff2") format("woff2"); font-weight: 400 700; font-display: swap; }
@font-face { font-family: "Plex Sans"; src: url("fonts/IBMPlexSans-latin-ext.woff2") format("woff2"); font-weight: 400 700; font-display: swap; unicode-range: U+0100-02AF, U+0300-036F; }

:root {
  --bg: #f2ecdd;
  --bg-raised: #fffdf2;
  --panel: #faf5e9;
  --ink: #2a241c;
  --ink-soft: #453d31;
  --muted: #6d6352;
  --line: #ddd3be;
  --line-soft: #e8dfc9;
  --accent: #8a5a00;
  --accent-strong: #6f4700;
  --accent-fill: #c07d14;
  --accent-soft: rgba(138, 90, 0, 0.14);
  --leaf: #3f5d2f;
  --hot: #a03a2a;
  --hot-soft: rgba(160, 58, 42, 0.14);
  --ok: #2e5d33;
  --focus: #8a5a00;
  --stamp: #8a5a00;
  --radius: 12px;
  --shadow: 0 10px 28px rgba(42, 36, 28, 0.12);
  --serif: "Fraunces", Georgia, serif;
  --sans: "Plex Sans", system-ui, sans-serif;
}

html[data-theme="dark"] {
  --bg: #14100e;
  --bg-raised: #1b1614;
  --panel: #211a16;
  --ink: #efe6d6;
  --ink-soft: #cfc2ae;
  --muted: #a2947f;
  --line: #33291f;
  --line-soft: #2a211b;
  --accent: #d99123;
  --accent-strong: #e9a83a;
  --accent-fill: #d99123;
  --accent-soft: rgba(217, 145, 35, 0.16);
  --leaf: #8ba06f;
  --hot: #c8553d;
  --hot-soft: rgba(200, 85, 61, 0.16);
  --ok: #7fc48a;
  --focus: #e0a243;
  --stamp: #d99123;
  --shadow: 0 14px 40px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.62;
  -webkit-text-size-adjust: 100%;
}

.container { width: min(1220px, 100% - 2.5rem); margin-inline: auto; }
.narrow { width: min(46rem, 100%); }

/* ---------- skip link / focus ---------- */
.skip-link { position: absolute; left: -9999px; top: 0; z-index: 1000; background: var(--bg-raised); color: var(--ink); padding: 0.75rem 1.25rem; border: 2px solid var(--focus); border-radius: 0 0 8px 0; font-weight: 700; text-decoration: none; }
.skip-link:focus { left: 0; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }

/* ---------- topbar ---------- */
.topbar { position: sticky; top: 0; z-index: 60; height: 44px; display: flex; align-items: center; gap: 0.9rem; padding-inline: max(1.1rem, env(safe-area-inset-left)) max(1.1rem, env(safe-area-inset-right)); padding-top: env(safe-area-inset-top); background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); border-bottom: 1px solid var(--line-soft); font-size: 0.82rem; }
.brand { display: inline-flex; align-items: center; gap: 0.45rem; text-decoration: none; color: var(--ink); font-family: var(--serif); font-weight: 700; font-size: 0.95rem; letter-spacing: 0.02em; white-space: nowrap; }
.brand svg { color: var(--accent); flex: none; }
.brand-word { white-space: nowrap; }
.brand-accent { color: var(--accent); }
.topnav { display: flex; gap: 0.15rem; margin-left: auto; overflow-x: auto; scrollbar-width: none; }
.topnav::-webkit-scrollbar { display: none; }
.topnav a { color: var(--ink-soft); text-decoration: none; padding: 0.25rem 0.55rem; border-radius: 6px; white-space: nowrap; }
.topnav a:hover { color: var(--accent-strong); background: var(--accent-soft); }
.icon-btn { border: 1px solid var(--line); background: transparent; color: var(--ink); width: 36px; height: 32px; border-radius: 8px; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; flex: none; }
.icon-btn:hover { border-color: var(--accent); color: var(--accent); }
.lang-switch { border: 1px solid var(--line); border-radius: 8px; padding: 0.3rem 0.55rem; color: var(--ink-soft); text-decoration: none; font-weight: 600; letter-spacing: 0.04em; flex: none; }
.lang-switch:hover { border-color: var(--accent); color: var(--accent-strong); }
@media (max-width: 980px) { .topnav { display: none; } }

/* ---------- reading rail (v2 standard) ---------- */
.rail { display: none; }
@media (min-width: 1100px) {
  .rail { --col: 76.25rem; --gut: 1.25rem; display: flex; flex-direction: column; position: fixed; top: 50%; left: calc(50% + var(--col) / 2 + var(--gut)); transform: translateY(-50%); z-index: 40; margin: 0; padding: 0.4rem 0; max-height: calc(100vh - 7rem); }
  .rail::before { content: ""; position: absolute; left: calc(0.875rem - 0.5px); top: 1.1rem; bottom: 1.1rem; width: 1px; background: var(--line); }
  .rail-dot { position: relative; display: flex; align-items: center; justify-content: center; width: 1.75rem; height: 1.75rem; text-decoration: none; border-radius: 50%; }
  .rail-dot .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--muted); box-shadow: 0 0 0 3px var(--bg); transition: transform 0.2s, background 0.2s, box-shadow 0.2s; flex: none; }
  .rail-dot:hover .dot, .rail-dot:focus-visible .dot { background: var(--accent); transform: scale(1.25); }
  .rail-dot[aria-current="true"] .dot { background: var(--accent); transform: scale(1.45); box-shadow: 0 0 0 3px var(--bg), 0 0 0 4.5px color-mix(in srgb, var(--accent) 38%, transparent); }
  .rail-dot:focus-visible { outline: 2px solid var(--accent); outline-offset: -1px; }
  .rail-label { position: absolute; right: calc(100% + 0.3rem); top: 50%; transform: translate(6px, -50%); padding: 0.22rem 0.65rem; border: 1px solid var(--line); border-radius: 0.5rem; background: var(--bg); color: var(--ink); box-shadow: 0 6px 20px rgba(0,0,0,0.14); font-size: 0.82rem; font-weight: 600; line-height: 1.3; white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity 0.15s, transform 0.15s; }
  .rail-dot:hover .rail-label, .rail-dot:focus-visible .rail-label { opacity: 1; transform: translate(0, -50%); }
}
@media (min-width: 1400px) {
  .rail-label { right: auto; left: calc(100% + 0.15rem); max-width: calc(50vw - var(--col) / 2 - var(--gut) - 3.25rem); overflow: hidden; text-overflow: ellipsis; padding: 0.1rem 0.2rem; border-color: transparent; background: transparent; box-shadow: none; color: var(--muted); transform: translate(-4px, -50%); }
  .rail-dot:hover .rail-label, .rail-dot:focus-visible .rail-label { color: var(--accent-strong); }
}
@media (prefers-reduced-motion: reduce) { .rail .dot, .rail-label { transition: none; } }

/* ---------- hero ---------- */
.hero { min-height: calc(100vh - 44px); min-height: var(--stable-vh, calc(100svh - 44px)); display: grid; grid-template-columns: minmax(0, 0.94fr) minmax(0, 1.06fr); gap: 2.2rem; align-items: center; padding: 1.6rem 0 2.4rem; position: relative; }
@media (max-width: 1020px) { .hero { grid-template-columns: 1fr; min-height: 0; gap: 1.1rem; padding-top: 1.1rem; } }
.kicker { display: inline-flex; align-items: center; gap: 0.5rem; font-size: 0.78rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--hot); font-weight: 700; margin-bottom: 0.85rem; }
.kicker::before { content: ""; width: 26px; height: 2px; background: var(--hot); display: inline-block; }
h1 { font-family: var(--serif); font-weight: 640; font-size: clamp(2.3rem, 4.5vw, 3.45rem); line-height: 1.05; letter-spacing: -0.015em; margin: 0 0 1.05rem; text-wrap: balance; }
h1 em { font-style: italic; color: var(--accent); }
.deck { font-size: 1.1rem; color: var(--ink-soft); max-width: 56ch; margin: 0 0 1.3rem; }
.deck strong { color: var(--ink); }

.chips { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-bottom: 1.2rem; }
.chip { font-size: 0.8rem; border: 1px solid var(--line); border-radius: 999px; padding: 0.3rem 0.75rem; color: var(--ink-soft); background: var(--panel); }
.chip b { color: var(--accent-strong); font-variant-numeric: tabular-nums; }
.scroll-cue { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--muted); font-size: 0.85rem; text-decoration: none; border: none; background: none; cursor: pointer; padding: 0.4rem 0; font-family: var(--sans); }
.scroll-cue:hover { color: var(--accent-strong); }
.scroll-cue:hover svg { transform: translateY(3px); }
.scroll-cue svg { transition: transform 0.25s ease; }

/* ---------- boomerang diagram ---------- */
.diagram-panel { position: relative; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); box-shadow: var(--shadow); padding: 1rem 1rem 0.6rem; }
.diagram-panel svg { width: 100%; height: auto; display: block; }
.diagram-cap { font-size: 0.72rem; color: var(--muted); padding: 0.4rem 0.3rem 0.2rem; }

/* ---------- basket picker ---------- */
.picker { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0.9rem 0 0.4rem; }
.food-chip { font: inherit; font-size: 0.83rem; border: 1px solid var(--line); border-radius: 10px; background: var(--bg-raised); color: var(--ink-soft); padding: 0.42rem 0.7rem; cursor: pointer; display: inline-flex; align-items: center; gap: 0.45rem; }
.food-chip:hover { border-color: var(--accent); color: var(--accent-strong); }
.food-chip[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-strong); font-weight: 700; box-shadow: 0 0 0 1px var(--accent); }
.food-chip .n { font-variant-numeric: tabular-nums; color: var(--muted); font-size: 0.75rem; }
.food-chip[aria-pressed="true"] .n { color: var(--accent-strong); }

.basket-answer { border: 1px solid var(--line); border-left: 4px solid var(--accent); background: var(--panel); border-radius: var(--radius); padding: 1rem 1.1rem; margin-top: 0.8rem; }
.basket-answer h3 { font-family: var(--serif); font-size: 1.35rem; margin: 0 0 0.2rem; }
.basket-stats { display: flex; flex-wrap: wrap; gap: 1.5rem; margin: 0.6rem 0 0.4rem; }
.basket-stat b { display: block; font-family: var(--serif); font-size: 1.45rem; color: var(--accent-strong); font-variant-numeric: tabular-nums; line-height: 1.1; }
.basket-stat span { font-size: 0.72rem; color: var(--muted); max-width: 22ch; display: inline-block; }
.examples { border-top: 1px dashed var(--line); padding-top: 0.5rem; margin-top: 0.4rem; font-size: 0.86rem; color: var(--ink-soft); }
.examples li { margin: 0.18rem 0; }
.examples b { color: var(--ink); }

.share-row { display: flex; align-items: center; gap: 0.45rem; margin: 0.7rem 0 0.1rem; flex-wrap: wrap; }
.share-label { font-size: 0.78rem; color: var(--muted); margin-right: 0.15rem; }
.share-btn { width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--line); background: transparent; color: var(--ink-soft); display: inline-flex; align-items: center; justify-content: center; text-decoration: none; cursor: pointer; }
.share-btn:hover { border-color: var(--accent); color: var(--accent-strong); }
.share-status { font-size: 0.75rem; color: var(--ok); min-height: 1.2em; }
.reset-link { border: 1px solid var(--line); border-radius: 8px; background: transparent; color: var(--ink-soft); font: inherit; font-size: 0.82rem; padding: 0.35rem 0.7rem; cursor: pointer; }
.reset-link:hover { border-color: var(--accent); color: var(--accent-strong); }

/* ---------- chapters ---------- */
.chapter { padding: 3.2rem 0 0.4rem; border-top: 1px solid var(--line-soft); }
.chapter-inner { width: min(1120px, 100% - 2.5rem); margin-inline: auto; }
.eyebrow { font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent-strong); font-weight: 700; margin-bottom: 0.5rem; }
h2 { font-family: var(--serif); font-weight: 640; font-size: clamp(1.5rem, 2.6vw, 2.25rem); line-height: 1.12; margin: 0 0 0.9rem; letter-spacing: -0.01em; text-wrap: balance; }
h2 .num { color: var(--accent); padding-right: 0.35em; }
h3.sub { font-family: var(--serif); font-size: 1.1rem; margin: 1.4rem 0 0.4rem; color: var(--ink-soft); }
p { margin: 0 0 1.05rem; max-width: 68ch; color: var(--ink-soft); }
p strong, li strong { color: var(--ink); }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: start; }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }

.fact-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line-soft); border: 1px solid var(--line-soft); border-radius: var(--radius); overflow: hidden; margin: 1.3rem 0; }
@media (max-width: 720px) { .fact-band { grid-template-columns: repeat(2, 1fr); } }
.fact-cell { background: var(--panel); padding: 0.9rem 1rem; }
.fact-cell b { display: block; font-family: var(--serif); font-size: 1.55rem; color: var(--accent-strong); font-variant-numeric: tabular-nums; line-height: 1.15; }
.fact-cell span { font-size: 0.73rem; color: var(--muted); }
.fact-cell.hot b { color: var(--hot); }

.svg-chart { width: 100%; height: auto; display: block; }
.chart-frame { border: 1px solid var(--line-soft); border-radius: var(--radius); background: var(--panel); padding: 0.8rem 0.9rem 0.5rem; margin: 1.1rem 0; }
.chart-cap { font-size: 0.78rem; color: var(--muted); margin-top: 0.3rem; }

.steps { counter-reset: step; list-style: none; padding: 0; margin: 1.1rem 0; }
.steps li { counter-increment: step; position: relative; padding-left: 2.3rem; margin-bottom: 0.7rem; max-width: 64ch; color: var(--ink-soft); }
.steps li::before { content: counter(step); position: absolute; left: 0; top: -0.18rem; width: 1.7rem; height: 1.7rem; border-radius: 50%; border: 1px solid var(--accent); color: var(--accent-strong); font-family: var(--serif); font-weight: 700; display: flex; align-items: center; justify-content: center; font-size: 0.85rem; }

.callout { border: 1px solid var(--line); border-left: 4px solid var(--hot); background: var(--panel); border-radius: 10px; padding: 0.85rem 1rem; margin: 1.2rem 0; font-size: 0.95rem; }
.callout.calm { border-left-color: var(--leaf); }
.callout b { color: var(--hot); }
.callout.calm b { color: var(--leaf); }
.callout ol { margin: 0.4rem 0 0; padding-left: 1.2rem; }

.molar-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.7rem; margin: 1.2rem 0; }
@media (max-width: 860px) { .molar-grid { grid-template-columns: 1fr; } }
.molar { border: 1px solid var(--line); border-radius: 12px; padding: 0.7rem 0.8rem; background: var(--bg-raised); font-size: 0.86rem; }
.molar b { display: block; color: var(--accent-strong); font-family: var(--serif); font-size: 1rem; margin-bottom: 0.15rem; }
.molar .cnt { float: right; font-variant-numeric: tabular-nums; color: var(--muted); }
.molar small { color: var(--muted); font-size: 0.74rem; }

.sources { font-size: 0.85rem; color: var(--muted); }
.sources li { margin-bottom: 0.35rem; }
.sources a { color: var(--accent-strong); }
details { border: 1px solid var(--line-soft); border-radius: 10px; padding: 0.5rem 0.8rem; margin: 0.6rem 0; background: var(--panel); font-size: 0.9rem; }
summary { cursor: pointer; font-weight: 600; color: var(--ink-soft); }

table.data { border-collapse: collapse; font-size: 0.85rem; width: 100%; font-variant-numeric: tabular-nums; }
table.data th, table.data td { text-align: left; padding: 0.32rem 0.55rem; border-bottom: 1px solid var(--line-soft); }
table.data th { color: var(--muted); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line-soft); border-radius: var(--radius); }

.footer { border-top: 1px solid var(--line-soft); margin-top: 2.6rem; padding: 1.5rem 0 calc(2rem + env(safe-area-inset-bottom)); font-size: 0.82rem; color: var(--muted); }
.footer .container { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: baseline; }
.footer a { color: var(--ink-soft); }
.footer a:hover { color: var(--accent-strong); }
.footer-nav { display: flex; gap: 1rem; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

figure { margin: 1.4rem 0; border: 1px solid var(--line-soft); border-radius: var(--radius); overflow: hidden; background: var(--panel); }
figure img { width: 100%; height: auto; display: block; }
figcaption { font-size: 0.78rem; color: var(--muted); padding: 0.55rem 0.85rem; border-top: 1px solid var(--line-soft); }