/* ==========================================================================
   NUTRITION GUIDE — KNOWLEDGE MAP
   Namespaced nfg-kmap- throughout. Reuses existing theme design tokens
   (colors, type, spacing) from style.css — no new global styles, no
   conflicts with the rest of the site. Only loaded on pages using
   page-nutrition-guide.php.
   ========================================================================== */

.nfg-kmap {
  --kmap-basics: var(--color-text-muted);
  --kmap-functions: #3B7A8C;
  --kmap-food: var(--color-accent);
  --kmap-intake: var(--color-highlight);
  --kmap-safety: var(--color-warning);
  --kmap-health: #3B7A8C;
  --kmap-supplements: var(--color-warning);
  --kmap-absorption: var(--color-text-muted);
  --kmap-questions: var(--color-accent);
}

/* ==========================================================================
   1. HERO
   ========================================================================== */

.nfg-kmap-hero {
  text-align: center;
  padding-block: var(--space-6) var(--space-5);
  background: linear-gradient(180deg, var(--color-secondary) 0%, var(--color-bg) 100%);
}
.nfg-kmap-hero__eyebrow {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent-dark);
  font-weight: var(--font-weight-semibold);
}
.nfg-kmap-hero h1 {
  font-size: var(--text-4xl);
  margin-block: var(--space-1) var(--space-2);
}
.nfg-kmap-hero__subtitle {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 620px;
  margin-inline: auto;
}
.nfg-kmap-hero__cta {
  margin-top: var(--space-3);
}

/* ==========================================================================
   2. "YOU ARE HERE" BREADCRUMB (content-navigation, not the site breadcrumb)
   ========================================================================== */

.nfg-kmap-path {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4em;
  font-size: var(--text-sm);
  padding: var(--space-2) 0;
  position: sticky;
  top: 0;
  background: var(--color-bg);
  z-index: 20;
  border-bottom: 1px solid var(--color-border);
}
.nfg-kmap-path__item {
  color: var(--color-text-muted);
  background: none;
  border: none;
  font: inherit;
  cursor: pointer;
  padding: 0.2em 0.3em;
  border-radius: var(--radius-sm);
}
.nfg-kmap-path__item:hover { color: var(--color-primary); text-decoration: underline; }
.nfg-kmap-path__item[aria-current="true"] {
  color: var(--color-primary-dark);
  font-weight: var(--font-weight-semibold);
  cursor: default;
  text-decoration: none;
}
.nfg-kmap-path__sep { color: var(--color-border); }
.nfg-kmap-path__back {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.4em 0.8em;
  cursor: pointer;
}
.nfg-kmap-path__back:hover { background: var(--color-secondary); }

/* ==========================================================================
   3. ENHANCED MAP — hidden until JS confirms it can run, then swapped
   ========================================================================== */

.nfg-kmap-enhanced { display: none; }
.nfg-kmap-js .nfg-kmap-enhanced { display: block; }
.nfg-kmap-js .nfg-kmap-fallback { display: none; }

.nfg-kmap-stage {
  padding-block: var(--space-4) var(--space-6);
}

/* Root/branch intro line above a card grid */
.nfg-kmap-stage__intro {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 640px;
  margin-bottom: var(--space-4);
}
.nfg-kmap-stage__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-1);
}

/* Branch/leaf-picker card grid */
.nfg-kmap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-3);
}

.nfg-kmap-node {
  display: block;
  width: 100%;
  text-align: left;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--kmap-node-color, var(--color-accent));
  border-radius: var(--radius-md);
  padding: var(--space-3);
  cursor: pointer;
  font: inherit;
  color: inherit;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}
.nfg-kmap-node:hover,
.nfg-kmap-node:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.nfg-kmap-node__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-primary-dark);
  margin: 0 0 0.3em;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5em;
}
.nfg-kmap-node__title svg { flex-shrink: 0; width: 18px; height: 18px; color: var(--color-text-muted); }
.nfg-kmap-node__summary {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0;
}
.nfg-kmap-node--leaf .nfg-kmap-node__title svg { color: var(--kmap-node-color, var(--color-accent)); }

/* Root node — visually dominant, per spec section 8 */
.nfg-kmap-root-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-1);
  margin-bottom: var(--space-5);
}
.nfg-kmap-root-node__circle {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-weight-semibold);
  box-shadow: var(--shadow-md);
}
.nfg-kmap-connector {
  width: 2px;
  height: var(--space-4);
  background: var(--color-border);
}

/* ==========================================================================
   4. LEAF CONTENT PANEL
   ========================================================================== */

.nfg-kmap-leaf-panel {
  max-width: 760px;
}
.nfg-kmap-leaf-panel h2 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-1);
}
.nfg-kmap-leaf-panel__summary {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}
.nfg-kmap-leaf-panel > * + * { margin-top: var(--space-3); }

.nfg-kmap-takeaway {
  background: var(--color-secondary);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
}

.nfg-kmap-callout {
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  border-left: 3px solid var(--color-border);
}
.nfg-kmap-callout__title { font-weight: var(--font-weight-semibold); margin: 0 0 0.3em; }
.nfg-kmap-callout--info { background: #EEF4F1; border-left-color: var(--kmap-functions, #3B7A8C); }
.nfg-kmap-callout--neutral { background: var(--color-secondary); border-left-color: var(--color-border); }
.nfg-kmap-callout--warning { background: var(--color-highlight-bg); border-left-color: var(--color-warning); }
.nfg-kmap-callout--warning .nfg-kmap-callout__title { color: var(--color-warning); }

.nfg-kmap-fact-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}
.nfg-kmap-fact-card__title { font-weight: var(--font-weight-semibold); margin: 0 0 var(--space-1); }
.nfg-kmap-fact-card ul { margin: 0; padding-left: 1.2em; }
.nfg-kmap-fact-card li { font-size: var(--text-sm); margin-bottom: 0.3em; }

.nfg-kmap-stat {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  background: var(--color-primary);
  color: var(--color-secondary);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  gap: 0.1em;
}
.nfg-kmap-stat__value { font-family: var(--font-display); font-size: var(--text-3xl); line-height: 1; }
.nfg-kmap-stat__label { font-size: var(--text-sm); opacity: 0.9; }
.nfg-kmap-stat__sub { font-size: var(--text-xs); opacity: 0.7; }

/* Data table — used by both the "table" block and the fallback/enhanced
   bar-chart numeric table, per spec: never hide the exact numbers. */
.nfg-kmap-table-wrap { overflow-x: auto; border: 1px solid var(--color-border); border-radius: var(--radius-sm); }
.nfg-kmap-table-title { font-size: var(--text-sm); font-weight: var(--font-weight-medium); padding: var(--space-2) var(--space-2) 0; margin: 0; }
.nfg-kmap table.nfg-table { width: 100%; min-width: 420px; border-collapse: collapse; font-size: var(--text-sm); }
.nfg-kmap table.nfg-table th,
.nfg-kmap table.nfg-table td { padding: 0.6em 0.9em; text-align: left; border-bottom: 1px solid var(--color-border); }
.nfg-kmap table.nfg-table thead th { background: var(--color-secondary); color: var(--color-primary-dark); white-space: nowrap; }

/* Animated bar chart (enhanced/JS view only — fallback uses a plain table) */
.nfg-kmap-barchart { border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-3); }
.nfg-kmap-barchart__title { font-size: var(--text-sm); font-weight: var(--font-weight-medium); margin: 0 0 var(--space-3); }
.nfg-kmap-bar { display: grid; grid-template-columns: 160px 1fr 64px; align-items: center; gap: var(--space-2); margin-bottom: var(--space-2); }
.nfg-kmap-bar:last-child { margin-bottom: 0; }
.nfg-kmap-bar__label { font-size: var(--text-sm); }
.nfg-kmap-bar__track { background: var(--color-secondary); border-radius: 999px; height: 14px; overflow: hidden; }
.nfg-kmap-bar__fill {
  height: 100%;
  width: 0%;
  background: var(--color-accent);
  border-radius: 999px;
  transition: width 700ms ease;
}
.nfg-kmap-bar--highlight .nfg-kmap-bar__fill { background: var(--color-primary); }
.nfg-kmap-bar__value { font-size: var(--text-sm); font-weight: var(--font-weight-medium); text-align: right; }
@media (max-width: 480px) {
  .nfg-kmap-bar { grid-template-columns: 1fr; gap: 0.3em; }
  .nfg-kmap-bar__value { text-align: left; }
}

.nfg-kmap-sources { border-top: 1px solid var(--color-border); padding-top: var(--space-2); }
.nfg-kmap-sources__title { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-muted); margin: 0 0 0.4em; }
.nfg-kmap-sources ol { margin: 0; padding-left: 1.2em; }
.nfg-kmap-sources li { font-size: var(--text-sm); margin-bottom: 0.3em; }

/* ==========================================================================
   5. FALLBACK TREE (no-JS / SEO source of truth) — styled to look
   intentional, not like a bare unstyled disclosure list.
   ========================================================================== */

.nfg-kmap-fallback { padding-block: var(--space-4) var(--space-6); }
.nfg-kmap-fallback__intro { font-size: var(--text-lg); color: var(--color-text-muted); max-width: 640px; margin-bottom: var(--space-3); }

.nfg-kmap-fallback__branch {
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
  background: var(--color-surface);
}
.nfg-kmap-fallback__branch > summary {
  cursor: pointer;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-display);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary-dark);
  list-style: none;
}
.nfg-kmap-fallback__branch > summary::-webkit-details-marker { display: none; }
.nfg-kmap-fallback__branch > summary::before { content: "+ "; color: var(--color-accent); }
.nfg-kmap-fallback__branch[open] > summary::before { content: "– "; }
.nfg-kmap-fallback__body { padding: 0 var(--space-3) var(--space-3); }
.nfg-kmap-fallback__body .nfg-kmap-fallback__branch { margin-top: var(--space-2); }
.nfg-kmap-fallback__leaf { padding-block: var(--space-2); border-top: 1px solid var(--color-border); }
.nfg-kmap-fallback__leaf:first-child { border-top: none; }
.nfg-kmap-fallback__leaf > * + * { margin-top: var(--space-2); }

/* ==========================================================================
   6. MOBILE — same drill-down interaction, single-column layout
   ========================================================================== */

@media (max-width: 640px) {
  .nfg-kmap-hero h1 { font-size: var(--text-3xl); }
  .nfg-kmap-grid { grid-template-columns: 1fr; }
  .nfg-kmap-root-node__circle { width: 110px; height: 110px; font-size: var(--text-lg); }
  .nfg-kmap-path { top: 0; }
  .nfg-kmap-leaf-panel h2 { font-size: var(--text-2xl); }
}

/* ==========================================================================
   7. PRINT — hide interactive controls, show full structured content
   ========================================================================== */

@media print {
  .nfg-kmap-hero__cta,
  .nfg-kmap-path__back,
  .nfg-kmap-js .nfg-kmap-enhanced { display: none !important; }
  .nfg-kmap-js .nfg-kmap-fallback { display: block !important; }
  .nfg-kmap-fallback__branch { border: none; }
  .nfg-kmap-fallback__branch > summary::before { content: ""; }
  details.nfg-kmap-fallback__branch { display: block; }
  details.nfg-kmap-fallback__branch > *:not(summary) { display: block !important; }
}