/* ============ Design tokens ============ */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(3rem, 0.5rem + 7vw, 7rem);

  --space-1: .25rem; --space-2: .5rem; --space-3: .75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem;
  --space-12: 3rem; --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  --radius-sm: .375rem; --radius-md: .5rem; --radius-lg: .75rem; --radius-xl: 1rem; --radius-full: 9999px;
  --transition-interactive: 200ms cubic-bezier(.16,1,.3,1);

  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  --font-body: 'Work Sans', system-ui, -apple-system, sans-serif;
  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
}

:root, [data-theme='light'] {
  /* Warm cream + sage green + terracotta accent — food-editorial */
  --color-bg: #F6F1E7;
  --color-surface: #FBF7EE;
  --color-surface-2: #FFFCF5;
  --color-surface-offset: #EEE7D5;
  --color-surface-offset-2: #E4DBC4;
  --color-divider: #D8CDB2;
  --color-border: #C9BC9A;

  --color-text: #2A2A22;
  --color-text-muted: #6D6A5D;
  --color-text-faint: #A8A292;
  --color-text-inverse: #FBF7EE;

  /* Sage green primary */
  --color-primary: #4E6A4E;
  --color-primary-hover: #3D5A3F;
  --color-primary-active: #2E4830;
  --color-primary-highlight: #D8E1D3;

  /* Terracotta accent — for callouts, not links */
  --color-accent: #B45A3C;
  --color-accent-highlight: #F0D9CC;

  /* Warning (deeper terracotta) */
  --color-warning: #A8451E;
  --color-warning-highlight: #F1D6C6;

  /* Alert / safety red */
  --color-alert: #8E2A2A;
  --color-alert-highlight: #F1D3D0;

  --shadow-sm: 0 1px 2px rgba(60,45,20,.06);
  --shadow-md: 0 4px 14px rgba(60,45,20,.09);
  --shadow-lg: 0 16px 40px rgba(60,45,20,.14);
}

[data-theme='dark'] {
  --color-bg: #1A1814;
  --color-surface: #211E19;
  --color-surface-2: #26221C;
  --color-surface-offset: #2E2921;
  --color-surface-offset-2: #37312A;
  --color-divider: #3A342B;
  --color-border: #4A4338;

  --color-text: #EAE3D2;
  --color-text-muted: #A29B87;
  --color-text-faint: #706B5D;
  --color-text-inverse: #1A1814;

  --color-primary: #A5C09E;
  --color-primary-hover: #B8D0B1;
  --color-primary-active: #C9DDC3;
  --color-primary-highlight: #3A4A3B;

  --color-accent: #E38B6C;
  --color-accent-highlight: #4A2E23;

  --color-warning: #E39567;
  --color-warning-highlight: #4A2E1F;

  --color-alert: #D97878;
  --color-alert-highlight: #3E1F1F;

  --shadow-sm: 0 1px 2px rgba(0,0,0,.35);
  --shadow-md: 0 4px 14px rgba(0,0,0,.5);
  --shadow-lg: 0 16px 40px rgba(0,0,0,.6);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #1A1814;
    --color-surface: #211E19;
    --color-surface-2: #26221C;
    --color-surface-offset: #2E2921;
    --color-surface-offset-2: #37312A;
    --color-divider: #3A342B;
    --color-border: #4A4338;
    --color-text: #EAE3D2;
    --color-text-muted: #A29B87;
    --color-text-faint: #706B5D;
    --color-text-inverse: #1A1814;
    --color-primary: #A5C09E;
    --color-primary-hover: #B8D0B1;
    --color-primary-active: #C9DDC3;
    --color-primary-highlight: #3A4A3B;
    --color-accent: #E38B6C;
    --color-accent-highlight: #4A2E23;
    --color-warning: #E39567;
    --color-warning-highlight: #4A2E1F;
    --color-alert: #D97878;
    --color-alert-highlight: #3E1F1F;
  }
}

/* ============ Base ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img, picture, video, svg { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.15;
  text-wrap: balance;
}

p, li, figcaption { text-wrap: pretty; }

a {
  color: var(--color-primary);
  text-decoration-color: color-mix(in oklab, var(--color-primary) 40%, transparent);
  text-underline-offset: 3px;
  transition: color var(--transition-interactive), text-decoration-color var(--transition-interactive);
}
a:hover { color: var(--color-primary-hover); text-decoration-color: currentColor; }

::selection { background: var(--color-primary-highlight); color: var(--color-text); }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0;
}

.skip-link {
  position: absolute; left: var(--space-4); top: var(--space-4);
  background: var(--color-primary); color: var(--color-text-inverse);
  padding: var(--space-3) var(--space-4); border-radius: var(--radius-md);
  transform: translateY(-200%); transition: transform var(--transition-interactive);
  z-index: 100; font-weight: 600;
}
.skip-link:focus { transform: translateY(0); color: var(--color-text-inverse); }

button { cursor: pointer; background: none; border: none; }

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

/* ============ Layout primitives ============ */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 4vw, var(--space-8));
}
.container--narrow { max-width: var(--content-narrow); }
.container--default { max-width: var(--content-default); }

.section { padding-block: clamp(var(--space-12), 8vw, var(--space-24)); }
.section--tight { padding-block: clamp(var(--space-8), 5vw, var(--space-16)); }

/* ============ Header ============ */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in oklab, var(--color-bg) 92%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid color-mix(in oklab, var(--color-divider) 60%, transparent);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
}
.brand { display: inline-flex; align-items: center; gap: var(--space-3); text-decoration: none; color: var(--color-text); }
.brand:hover { color: var(--color-primary); }
.brand__mark { width: 32px; height: 32px; color: var(--color-primary); }
.brand__wordmark {
  font-family: var(--font-display); font-size: var(--text-lg); font-weight: 500;
  letter-spacing: -0.01em; line-height: 1;
  white-space: nowrap;
}
.brand__sub {
  display: block; font-family: var(--font-body); font-size: var(--text-xs);
  color: var(--color-text-muted); letter-spacing: 0.08em; text-transform: uppercase;
  margin-top: 2px;
}

.site-nav { display: flex; align-items: center; gap: var(--space-1); }
.site-nav__toggle { display: none; }
.site-nav__list {
  display: flex; align-items: center; gap: var(--space-1);
  list-style: none; list-style-type: "";
}
.site-nav__list a {
  display: inline-block; padding: var(--space-2) var(--space-3);
  color: var(--color-text-muted); font-size: var(--text-sm); font-weight: 500;
  text-decoration: none; border-radius: var(--radius-md);
  white-space: nowrap;
}
.site-nav__list a:hover { color: var(--color-text); background: var(--color-surface-offset); }
.site-nav__list a[aria-current="page"] { color: var(--color-primary); background: var(--color-primary-highlight); }

.theme-toggle {
  width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center;
  color: var(--color-text-muted); border-radius: var(--radius-md);
}
.theme-toggle:hover { color: var(--color-text); background: var(--color-surface-offset); }

/* Hide brand subtitle at intermediate widths to preserve nav space */
@media (max-width: 1100px) {
  .brand__sub { display: none; }
  .site-nav__list a { padding: var(--space-2); font-size: calc(var(--text-sm) - 1px); }
}

@media (max-width: 1100px) {
  .site-nav__toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; color: var(--color-text); border-radius: var(--radius-md);
  }
  .site-nav__list {
    position: absolute; inset: 100% 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--color-surface); border-bottom: 1px solid var(--color-divider);
    padding: var(--space-3); box-shadow: var(--shadow-md);
    display: none;
  }
  .site-nav[data-open="true"] .site-nav__list { display: flex; }
  .site-nav__list a { padding: var(--space-3) var(--space-4); font-size: var(--text-base); white-space: normal; }
}

/* ============ Hero ============ */
.hero { padding-block: clamp(var(--space-12), 8vw, var(--space-24)); }
.hero__grid {
  display: grid; gap: clamp(var(--space-8), 6vw, var(--space-16));
  grid-template-columns: 1fr;
  align-items: center;
}
@media (min-width: 900px) {
  .hero__grid { grid-template-columns: 1.05fr 1fr; }
}
.eyebrow {
  display: inline-block; font-size: var(--text-xs);
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--color-accent); font-weight: 600;
  margin-bottom: var(--space-4);
}
.hero__title {
  font-size: var(--text-2xl);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-6);
}
.hero__title em {
  font-style: italic;
  color: var(--color-primary);
  font-weight: 400;
}
.hero__lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 40ch;
  margin-bottom: var(--space-8);
}
.hero__cta { display: flex; gap: var(--space-3); flex-wrap: wrap; }

.hero__figure {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 3 / 4;
  background: var(--color-surface-offset);
}
.hero__figure img { width: 100%; height: 100%; object-fit: cover; }

/* Interior page hero */
.page-hero { padding-block: clamp(var(--space-10), 6vw, var(--space-16)); border-bottom: 1px solid var(--color-divider); }
.page-hero__title {
  font-size: var(--text-2xl); font-weight: 400; line-height: 1.05;
  letter-spacing: -0.02em; max-width: 22ch;
  margin-bottom: var(--space-4);
}
.page-hero__lead {
  font-size: var(--text-lg); color: var(--color-text-muted); max-width: 60ch;
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm); font-weight: 600;
  border-radius: var(--radius-md);
  text-decoration: none; border: 1px solid transparent;
  transition: all var(--transition-interactive);
}
.btn--primary { background: var(--color-primary); color: var(--color-text-inverse); }
.btn--primary:hover { background: var(--color-primary-hover); color: var(--color-text-inverse); transform: translateY(-1px); }
.btn--secondary {
  background: transparent; color: var(--color-text);
  border-color: var(--color-border);
}
.btn--secondary:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ============ Prose / long-form ============ */
.prose {
  max-width: 68ch;
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-text);
}
.prose > * + * { margin-top: var(--space-5); }
.prose h2 {
  font-size: var(--text-xl); font-weight: 500;
  margin-top: var(--space-12); margin-bottom: var(--space-3);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
}
.prose > h2:first-child { border-top: none; padding-top: 0; margin-top: 0; }
.prose h3 {
  font-size: var(--text-lg); font-weight: 600;
  font-family: var(--font-body);
  margin-top: var(--space-8); margin-bottom: var(--space-2);
  color: var(--color-text);
}
.prose p, .prose li { color: var(--color-text); }
.prose a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 3px; }
.prose ul, .prose ol { padding-left: var(--space-6); }
.prose li + li { margin-top: var(--space-2); }
.prose strong { font-weight: 600; color: var(--color-text); }
.prose blockquote {
  border-left: 3px solid var(--color-primary);
  padding: var(--space-3) var(--space-6);
  font-style: italic;
  color: var(--color-text-muted);
  font-family: var(--font-display);
  font-size: var(--text-lg);
}
.prose figure { margin-block: var(--space-8); }
.prose figure img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.prose figcaption {
  font-size: var(--text-xs); color: var(--color-text-muted);
  text-align: center; margin-top: var(--space-2);
  letter-spacing: 0.04em;
}

.prose hr {
  border: none; height: 1px; background: var(--color-divider);
  margin-block: var(--space-8);
}

/* ============ Callouts ============ */
.callout {
  margin-block: var(--space-6);
  padding: var(--space-5) var(--space-6);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-primary);
  background: color-mix(in oklab, var(--color-primary-highlight) 60%, var(--color-surface));
}
.callout__label {
  display: block;
  font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--color-primary);
  margin-bottom: var(--space-2);
}
.callout--safety {
  border-left-color: var(--color-alert);
  background: color-mix(in oklab, var(--color-alert-highlight) 55%, var(--color-surface));
}
.callout--safety .callout__label { color: var(--color-alert); }
.callout--tip {
  border-left-color: var(--color-accent);
  background: color-mix(in oklab, var(--color-accent-highlight) 55%, var(--color-surface));
}
.callout--tip .callout__label { color: var(--color-accent); }

/* Numbers callout — ADA specs */
.spec-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-4);
  margin-block: var(--space-8);
}
.spec {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}
.spec__value {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}
.spec__label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.4;
}

/* ============ Card grids ============ */
.card-grid {
  display: grid; gap: var(--space-6);
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.card-grid--5 {
  grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 720px) {
  .card-grid--5 { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1080px) {
  .card-grid--5 { grid-template-columns: repeat(5, 1fr); }
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
  text-decoration: none;
  display: flex; flex-direction: column; gap: var(--space-2);
  color: var(--color-text);
}
a.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border);
}
.card__eyebrow {
  font-size: var(--text-xs); letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--color-text-muted);
  font-weight: 600;
}
.card__title {
  font-family: var(--font-display); font-size: var(--text-lg);
  font-weight: 500; line-height: 1.2;
  color: var(--color-text);
}
.card__desc { color: var(--color-text-muted); font-size: var(--text-sm); line-height: 1.55; }
.card__meta { font-size: var(--text-xs); color: var(--color-text-faint); margin-top: auto; padding-top: var(--space-2); }

/* Full-bleed image */
.bleed {
  margin-block: clamp(var(--space-10), 6vw, var(--space-16));
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius-lg);
}
.bleed img { width: 100%; height: 100%; object-fit: cover; }

/* ============ Section headers ============ */
.section-header { margin-bottom: var(--space-10); max-width: 60ch; }
.section-header__eyebrow {
  font-size: var(--text-xs); letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--color-accent); font-weight: 600; margin-bottom: var(--space-3);
}
.section-header__title {
  font-size: var(--text-xl); font-weight: 500; margin-bottom: var(--space-3);
}
.section-header__lead { color: var(--color-text-muted); font-size: var(--text-base); }

/* ============ Table of contents ============ */
.toc {
  padding: var(--space-4) var(--space-5);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  font-size: var(--text-sm);
}
.toc ol { list-style: none; list-style-type: ""; padding: 0; margin: 0; }
.toc li { margin-bottom: var(--space-2); }
.toc a {
  color: var(--color-text-muted); text-decoration: none; display: block;
  padding: var(--space-1) 0; line-height: 1.35;
}
.toc a:hover { color: var(--color-primary); }

/* On mobile, TOC is a collapsible details element (starts closed) */
.toc[data-collapsible] > summary {
  cursor: pointer; list-style: none;
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase;
}
.toc[data-collapsible] > summary::-webkit-details-marker { display: none; }
.toc[data-collapsible] > summary::after {
  content: '+'; font-size: var(--text-lg); color: var(--color-text-muted);
  transition: transform var(--transition-interactive);
}
.toc[data-collapsible][open] > summary::after { content: '\2013'; }
.toc[data-collapsible][open] > summary { margin-bottom: var(--space-3); }

.article-layout {
  display: grid; gap: var(--space-8);
  grid-template-columns: 1fr;
}
@media (min-width: 960px) {
  .article-layout { grid-template-columns: 220px 1fr; gap: var(--space-16); }
  .toc {
    position: sticky; top: calc(var(--space-16) + var(--space-6));
    border: none; padding: var(--space-5);
    border-left: 2px solid var(--color-divider); border-radius: 0;
    background: transparent;
    align-self: start;
  }
  /* Desktop: always-visible sidebar, no disclosure chrome */
  .toc[data-collapsible] > summary { display: none; }
  .toc[data-collapsible]::before {
    content: 'On this page';
    display: block;
    font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.12em;
    text-transform: uppercase; color: var(--color-text-muted);
    margin-bottom: var(--space-3);
  }
}

/* ============ Footer ============ */
.site-footer {
  border-top: 1px solid var(--color-divider);
  background: var(--color-surface-offset);
  padding-block: var(--space-16);
  margin-top: var(--space-24);
}
.site-footer__grid {
  display: grid; gap: var(--space-10);
  grid-template-columns: 1fr;
}
@media (min-width: 720px) {
  .site-footer__grid { grid-template-columns: 2fr 1fr 1fr; }
}
.site-footer h3 {
  font-family: var(--font-body); font-size: var(--text-xs);
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--color-text-muted); font-weight: 700;
  margin-bottom: var(--space-4);
}
.site-footer ul { list-style: none; list-style-type: ""; padding: 0; }
.site-footer li + li { margin-top: var(--space-2); }
.site-footer a { color: var(--color-text); text-decoration: none; font-size: var(--text-sm); }
.site-footer a:hover { color: var(--color-primary); }
.site-footer__blurb { color: var(--color-text-muted); font-size: var(--text-sm); max-width: 36ch; line-height: 1.6; }
.site-footer__legal {
  margin-top: var(--space-12); padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  display: flex; justify-content: space-between; align-items: center;
  gap: var(--space-4); flex-wrap: wrap;
  font-size: var(--text-xs); color: var(--color-text-muted);
}

/* ============ Utility ============ */
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

/* Big pull quote */
.pull {
  font-family: var(--font-display); font-size: var(--text-xl);
  font-style: italic; color: var(--color-text);
  line-height: 1.3; max-width: 32ch;
  margin: var(--space-12) 0 var(--space-12) 0;
  padding-left: var(--space-6);
  border-left: 3px solid var(--color-accent);
}
.pull cite { display: block; font-family: var(--font-body); font-style: normal; font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-3); }

/* Two-col split for editorial pages */
.split {
  display: grid; gap: clamp(var(--space-8), 5vw, var(--space-16));
  grid-template-columns: 1fr;
  align-items: center;
}
@media (min-width: 800px) {
  .split { grid-template-columns: 1fr 1fr; }
  .split--wide-left { grid-template-columns: 1.2fr 1fr; }
}
.split__figure {
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-md); aspect-ratio: 4/3;
}
.split__figure img { width:100%; height:100%; object-fit: cover; }