/* =========================================================================
   Based Notes — Minimal & modern nutrition knowledge base
   Design system: warm neutral surfaces + single muted green accent
   Typography: Cabinet Grotesk (display) + Satoshi (body) via Fontshare
   ========================================================================= */

/* ---- Type scale ---- */
: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);

  /* ---- 4px spacing ---- */
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem;
  --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: 0.375rem; --radius-md: 0.5rem;
  --radius-lg: 0.75rem; --radius-xl: 1rem; --radius-full: 9999px;

  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px oklch(0.2 0.01 80 / 0.06);
  --shadow-md: 0 4px 16px oklch(0.2 0.01 80 / 0.08);
  --shadow-lg: 0 18px 48px oklch(0.2 0.01 80 / 0.16);

  --content-narrow: 680px;
  --content-default: 1080px;
  --content-wide: 1280px;

  --font-display: "Cabinet Grotesk", "Helvetica Neue", sans-serif;
  --font-body: "Satoshi", "Inter", "Helvetica Neue", sans-serif;
}

/* ---- Light mode (custom minimal palette) ---- */
:root,
[data-theme="light"] {
  --color-bg: #f5f4ef;
  --color-surface: #fcfbf8;
  --color-surface-2: #ffffff;
  --color-surface-offset: #ecebe5;
  --color-divider: #e3e1d9;
  --color-border: #d8d6cd;

  --color-text: #1c1b17;
  --color-text-muted: #6a6960;
  --color-text-faint: #a8a69c;
  --color-text-inverse: #fbfaf6;

  --color-primary: #2f6b46;
  --color-primary-hover: #245536;
  --color-primary-active: #1b3f27;
  --color-primary-highlight: #dde7df;
}

/* ---- Dark mode ---- */
[data-theme="dark"] {
  --color-bg: #14130f;
  --color-surface: #1c1b17;
  --color-surface-2: #222118;
  --color-surface-offset: #1f1e1a;
  --color-divider: #2a2924;
  --color-border: #36352e;

  --color-text: #d7d5cb;
  --color-text-muted: #8d8b80;
  --color-text-faint: #5f5d54;
  --color-text-inverse: #1c1b17;

  --color-primary: #7fc79a;
  --color-primary-hover: #6bb589;
  --color-primary-active: #5aa377;
  --color-primary-highlight: #243028;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #14130f;
    --color-surface: #1c1b17;
    --color-surface-2: #222118;
    --color-surface-offset: #1f1e1a;
    --color-divider: #2a2924;
    --color-border: #36352e;
    --color-text: #d7d5cb;
    --color-text-muted: #8d8b80;
    --color-text-faint: #5f5d54;
    --color-text-inverse: #1c1b17;
    --color-primary: #7fc79a;
    --color-primary-hover: #6bb589;
    --color-primary-active: #5aa377;
    --color-primary-highlight: #243028;
  }
}

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

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
  hanging-punctuation: first last;
}

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);
  -webkit-tap-highlight-color: transparent;
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul[role="list"],
ol[role="list"] {
  list-style: none;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

h1,
h2,
h3,
h4 {
  text-wrap: balance;
  line-height: 1.12;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
}

p,
li {
  text-wrap: pretty;
  max-width: 72ch;
}

::selection {
  background: oklch(from var(--color-primary) l c h / 0.22);
  color: var(--color-text);
}

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

a,
button,
[role="button"],
input {
  transition: color var(--transition), background var(--transition),
    border-color var(--transition), box-shadow var(--transition);
}

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

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* =========================================================================
   Layout
   ========================================================================= */
.container {
  width: 100%;
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 5vw, var(--space-12));
}

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-divider);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  text-decoration: none;
}

.brand-mark {
  /* Height-led sizing preserves the approved logo's natural 512x340 ratio
     (a fixed square box stretched it). Width follows the intrinsic ratio. */
  height: 28px;
  width: auto;
  flex: none;
  color: var(--color-primary);
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  letter-spacing: -0.02em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.main-nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
}

.main-nav a:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

/* Narrow-viewport navigation for the static reference pages. Hidden wherever
   the inline links are visible (≥640px); below 640px it becomes the labelled
   Menu disclosure and the inline links move into its panel. */
.nav-toggle {
  display: none;
  position: relative;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  background: none;
  cursor: pointer;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
}
.nav-toggle::after { content: ""; position: absolute; inset: -6px; }
.nav-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

/* ---- Main nav active state (article pages) ---- */
.main-nav a.is-active {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

@media (max-width: 640px) {
  .nav-toggle {
    display: inline-flex;
  }
  .header-inner {
    position: relative;
  }
  /* The inline links become the disclosure panel's contents. The small inline
     script generated in build.js toggles data-open; Escape closes it. */
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
    min-width: 200px;
    padding: var(--space-2);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 60;
  }
  .main-nav[data-open="true"] {
    display: flex;
  }
  .main-nav a {
    display: flex;
    align-items: center;
    min-height: 44px;
  }
}

/* ---- Hero ---- */
.hero {
  padding-block: clamp(var(--space-16), 12vw, var(--space-32));
  border-bottom: 1px solid var(--color-divider);
  position: relative;
  overflow: hidden;
}

.hero::before {
  /* subtle grid texture */
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    circle at 1px 1px,
    var(--color-divider) 1px,
    transparent 0
  );
  background-size: 28px 28px;
  opacity: 0.5;
  mask-image: linear-gradient(180deg, #000, transparent 80%);
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 80%);
  pointer-events: none;
}

.eyebrow {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--color-primary);
}

.hero h1 {
  position: relative;
  font-size: var(--text-3xl);
  max-width: 16ch;
  margin-bottom: var(--space-5);
}

.hero-lead {
  position: relative;
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-bottom: var(--space-8);
}

/* ---- Search ---- */
.search {
  position: relative;
  max-width: 520px;
}

.search input {
  width: 100%;
  padding: var(--space-4) var(--space-4) var(--space-4) var(--space-12);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-2);
  color: var(--color-text);
  font-size: var(--text-base);
  box-shadow: var(--shadow-sm);
}

.search input::placeholder {
  color: var(--color-text-faint);
}

.search input:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-highlight);
}

.search-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-faint);
  pointer-events: none;
}

/* ---- Filter chips ---- */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-6);
  max-width: 760px;
}

.chip {
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
}

.chip:hover {
  color: var(--color-text);
  border-color: var(--color-text-faint);
}

.chip[aria-pressed="true"] {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

/* ---- Functions section ---- */
.functions {
  padding-block: clamp(var(--space-12), 6vw, var(--space-24));
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}

.section-head h2 {
  font-size: var(--text-xl);
}

.section-head .count {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  font-family: var(--font-body);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: var(--space-4);
}

.card {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  color: var(--color-text);
  text-decoration: none;
}

.card:hover {
  border-color: var(--color-text-faint);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  text-decoration: none;
}

.card:active {
  transform: translateY(0);
}

.card-tag {
  align-self: flex-start;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-highlight);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

.card h3 {
  font-size: var(--text-lg);
}

.card-title {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--color-text);
  text-decoration: none;
}

.card-title:hover {
  color: var(--color-primary);
}

.card .tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.card .nutrients {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
  padding-top: var(--space-2);
}

.nutrient-pill {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-divider);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  text-decoration: none;
  display: inline-block;
}

.nutrient-pill:hover {
  color: var(--color-primary);
  border-color: var(--color-primary-highlight);
  background: var(--color-primary-highlight);
}

.card .read-more {
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
}

.card .read-more:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-16) var(--space-4);
  color: var(--color-text-muted);
}

.empty-state strong {
  display: block;
  color: var(--color-text);
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

/* ---- Detail modal ---- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: oklch(0.15 0.01 80 / 0.5);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 100;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
  overflow-y: auto;
}

.modal-backdrop[data-open="true"] {
  opacity: 1;
  visibility: visible;
}

.modal {
  width: 100%;
  max-width: 680px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: clamp(var(--space-6), 5vw, var(--space-12));
  margin-block: var(--space-8);
  transform: translateY(12px);
  transition: transform var(--transition);
}

.modal-backdrop[data-open="true"] .modal {
  transform: translateY(0);
}

.modal-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.modal-head .tag {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.modal h2 {
  font-size: var(--text-2xl);
  margin-top: var(--space-2);
}

.modal .tagline {
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

.modal-close {
  flex: none;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.modal-body p {
  margin-bottom: var(--space-4);
  color: var(--color-text);
  line-height: 1.7;
}

.detail-block {
  margin-top: var(--space-6);
}

.detail-block h3 {
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  font-family: var(--font-body);
  margin-bottom: var(--space-3);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.signals {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.signals li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-divider);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

.sources {
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-divider);
}

.sources h3 {
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  font-family: var(--font-body);
  margin-bottom: var(--space-3);
}

.sources ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.sources a {
  font-size: var(--text-sm);
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid oklch(from var(--color-primary) l c h / 0.3);
}

.sources a:hover {
  color: var(--color-primary-hover);
  border-bottom-color: var(--color-primary-hover);
}

/* ---- Principles ---- */
.principles {
  background: var(--color-surface);
  border-block: 1px solid var(--color-divider);
  padding-block: clamp(var(--space-12), 6vw, var(--space-24));
}

.principles .section-head {
  margin-bottom: var(--space-10);
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-8);
}

.principle {
  padding-top: var(--space-4);
  border-top: 2px solid var(--color-primary);
}

.principle .num {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.05em;
}

.principle h3 {
  font-size: var(--text-lg);
  margin: var(--space-2) 0;
}

.principle p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ---- Disclaimer ---- */
.disclaimer {
  padding-block: var(--space-12) var(--space-16);
  text-align: center;
}

.disclaimer p {
  max-width: 56ch;
  margin-inline: auto;
  font-size: var(--text-sm);
  color: var(--color-text-faint);
}

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-10);
  color: var(--color-text-faint);
  font-size: var(--text-sm);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-inner a {
  color: var(--color-text-muted);
  text-decoration: none;
  border-bottom: 1px solid var(--color-divider);
}

.footer-inner a:hover {
  color: var(--color-text);
}

/* Shared site footer navigation (reference pages): mirrors the app shell's
   Product / Help & reference / Company columns. */
.footer-nav {
  display: flex;
  align-items: flex-start;
  gap: var(--space-10);
  flex-wrap: wrap;
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
}
.footer-col-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}
.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.footer-col a {
  color: var(--color-text-muted);
  text-decoration: none;
  border-bottom: 1px solid var(--color-divider);
}
.footer-col a:hover {
  color: var(--color-text);
}
@media (max-width: 640px) {
  .footer-nav {
    gap: var(--space-6);
  }
}

/* =========================================================================
   Article pages
   ========================================================================= */
.container-narrow {
  max-width: 760px;
}

.article {
  padding-block: clamp(var(--space-10), 5vw, var(--space-16)) var(--space-16);
}

.crumbs {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}

.crumbs a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.crumbs a:hover {
  color: var(--color-text);
}

.crumbs .crumb-current {
  color: var(--color-text);
  font-weight: 500;
}

.article-head {
  margin-bottom: var(--space-12);
}

.article-head .card-tag {
  display: inline-block;
  margin-bottom: var(--space-4);
}

.article-head h1 {
  font-size: var(--text-2xl);
  max-width: 20ch;
  letter-spacing: -0.03em;
}

.article-lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-top: var(--space-3);
  max-width: 56ch;
}

.article-block {
  margin-bottom: var(--space-10);
}

.article-block h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}

.article-block h3 {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  font-family: var(--font-body);
  margin-bottom: var(--space-3);
}

.key-idea {
  font-size: var(--text-lg);
  line-height: 1.55;
  color: var(--color-text);
  border-left: 3px solid var(--color-primary);
  padding-left: var(--space-5);
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-8);
  padding-block: var(--space-6);
  border-block: 1px solid var(--color-divider);
  margin-bottom: var(--space-10);
}

.detail-text {
  font-size: var(--text-base);
  line-height: 1.7;
  max-width: 68ch;
}

.article .sources {
  margin-top: var(--space-4);
}

.back-link {
  margin-top: var(--space-12);
}

.back-link a {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
}

.back-link a:hover {
  color: var(--color-primary-hover);
}

/* ---- Related ---- */
.related {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-4);
}

.related-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-2);
  text-decoration: none;
}

.related-card:hover {
  border-color: var(--color-text-faint);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.related-card .card-tag {
  align-self: flex-start;
}

.related-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.related-go {
  margin-top: auto;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
}

/* ---- Nutrients index ---- */
.index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-3);
}

.index-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  text-decoration: none;
}

.index-card:hover {
  border-color: var(--color-text-faint);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.index-card .related-title {
  font-size: var(--text-base);
  color: var(--color-text);
}

.index-card:hover .related-title {
  color: var(--color-primary);
}

/* inline related grid inside article body (nutrient pages) */
.related-inline {
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}

/* eyebrow used on nutrient index */
.functions .eyebrow {
  margin-bottom: 0;
}

/* =========================================================================
   Condition search page
   ========================================================================= */
.search-hero {
  padding: var(--space-16) 0 var(--space-10);
}
.search-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-2xl);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: var(--space-3) 0 var(--space-5);
  max-width: 20ch;
}
.hero-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 56ch;
}

.search-form {
  margin-top: var(--space-8);
}
.search-input-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-2) var(--space-1) var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.search-input-wrap:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-highlight);
}
.search-icon {
  width: 20px;
  height: 20px;
  color: var(--color-text-faint);
  flex-shrink: 0;
}
#condition-input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  padding: var(--space-3) 0;
  font-size: var(--text-base);
  font-family: var(--font-body);
  color: var(--color-text);
  outline: none;
}
.search-submit {
  flex-shrink: 0;
  border: none;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition);
}
.search-submit:hover { background: var(--color-primary-hover); }

.suggestions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.chip-suggest {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
}
.chip-suggest:hover { border-color: var(--color-primary); background: var(--color-primary-highlight); }

.crisis-note {
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.disclaimer-banner {
  background: var(--color-primary-highlight);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  padding: var(--space-5) 0;
}
.disclaimer-banner p { font-size: var(--text-sm); color: var(--color-text); margin: 0; }
.disclaimer-banner strong { color: var(--color-primary-active); }

.results-section { padding: var(--space-12) 0 var(--space-20); }
.results-query {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
}
.results-query strong { color: var(--color-text); }

.results-meta {
  margin-top: var(--space-12);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.section-head--results {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-divider);
  padding-bottom: var(--space-3);
}
.section-head--results h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xl);
  letter-spacing: -0.01em;
  color: var(--color-text);
}
.section-blurb {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
  max-width: 60ch;
}
.result-section { margin-bottom: var(--space-12); }
.result-section .count {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  white-space: nowrap;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-4);
}
.result-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.result-card:hover { border-color: var(--color-text-faint); box-shadow: var(--shadow-md); }
.result-card--deferred { border-style: dashed; background: transparent; }

.result-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}
.evidence-badge {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  white-space: nowrap;
  flex-shrink: 0;
}
.tone-high { background: #e3efe7; color: #1b3f27; }
.tone-registry { background: var(--color-surface-offset); color: var(--color-text-muted); }
.tone-neutral { background: var(--color-surface-offset); color: var(--color-text-muted); }
.tone-anecdote { background: #f0ece2; color: #6b5a2b; }
.tone-deferred { background: transparent; border: 1px dashed var(--color-border); color: var(--color-text-faint); }
[data-theme="dark"] .tone-high { background: #1f2f24; color: #7fc79a; }
[data-theme="dark"] .tone-anecdote { background: #2a2618; color: #c9b97a; }

.result-source {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text);
}
.result-date {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-left: auto;
}
.result-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  line-height: 1.3;
  color: var(--color-text);
  text-decoration: none;
}
.result-title:hover { color: var(--color-primary); text-decoration: underline; }
.result-findings {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
}
.result-caveat {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-style: italic;
  border-left: 2px solid var(--color-divider);
  padding-left: var(--space-3);
  margin-top: auto;
}
.result-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-1);
}
.meta-chip {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-divider);
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
}

.loading-state {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-16) 0;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-divider);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 640px) {
  .search-input-wrap { padding-left: var(--space-4); }
  .search-submit { padding: var(--space-3) var(--space-5); }
  .search-hero h1 { font-size: var(--text-xl); }
}

.findings-label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-faint);
  margin-right: var(--space-2);
}
.result-card--deferred .result-caveat { margin-top: 0; }