/**
 * Nutrition Wizzard - SEO Theme Stylesheet
 * 
 * Compliant with theme.py color palette and Google's SEO guidelines.
 * Mobile-first, responsive design with Core Web Vitals optimization.
 * 
 * Hosted on GCP Bucket behind Load Balancer
 * 
 * Color Palette (from theme.py):
 * - Background: #f8fafc (Slate 50)
 * - Text Primary: #0f172a (Slate 900)
 * - Text Secondary: #64748b (Slate 500)
 * - Accent Primary: #2563eb (Blue 600)
 * - Accent Secondary: #4f46e5 (Indigo 600)
 * - Card Background: #ffffff
 * - Border: #e2e8f0 (Slate 200)
 * - Error: #dc2626 (Red 600)
 * - Success: #16a34a (Green 600)
 */

/* ========================================
   CSS Variables (Design Tokens)
   ======================================== */
:root {
  /* Colors - matching theme.py */
  --color-background: #f0f4ff;
  --color-surface: #ffffff;
  --color-text-primary: #0f172a;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;
  --color-accent-primary: #2563eb;
  --color-accent-secondary: #4f46e5;
  --color-accent-gradient: linear-gradient(135deg, #2563eb, #4f46e5);
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --color-error: #dc2626;
  --color-success: #16a34a;
  --color-warning: #f59e0b;

  /* Typography - Inter font stack + Material-aligned scale */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  /* Material type scale (Clear Signals / financial UX) */
  --font-size-display-small: 2.25rem;   /* 36px - hero headline */
  --font-size-headline-medium: 1.75rem; /* 28px - section headers */
  --font-size-title-medium: 1.25rem;    /* 20px - card titles */
  --font-size-body-large: 1.125rem;     /* 18px - intro paragraph */
  --font-size-body-medium: 1rem;        /* 16px - excerpts, body */
  --font-size-label-large: 0.875rem;     /* 14px - nav, buttons */
  --font-size-label-small: 0.75rem;     /* 12px - metadata */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  --letter-spacing-tight: -0.025em;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Border Radius - matching theme.py (16px for cards) */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;

  /* Shadows - matching theme.py modern-card */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 12px 30px -18px rgba(15, 23, 42, 0.45);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.05), 0 4px 6px -4px rgb(0 0 0 / 0.05);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Layout */
  --max-width-content: 72rem;
  --max-width-article: 48rem;
  --header-height: 4rem;
}

/* ========================================
   Base Reset & Typography
   ======================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Headings - Semantic hierarchy for SEO */
h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  margin-bottom: var(--spacing-md);
  font-weight: 700;
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--color-text-primary);
}

h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-lg);
}

h2 {
  font-size: var(--font-size-3xl);
  margin-top: var(--spacing-2xl);
}

h3 {
  font-size: var(--font-size-2xl);
  margin-top: var(--spacing-xl);
}

h4 {
  font-size: var(--font-size-xl);
  margin-top: var(--spacing-lg);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
}

p {
  margin: 0 0 var(--spacing-md);
  line-height: var(--line-height-relaxed);
}

a {
  color: var(--color-accent-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover,
a:focus {
  color: var(--color-accent-secondary);
  text-decoration: underline;
}

/* ========================================
   Skip Link (Accessibility)
   ======================================== */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-accent-primary);
  color: white;
  border-radius: var(--radius-md);
  z-index: 9999;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: var(--spacing-md);
  outline: 2px solid var(--color-accent-secondary);
  outline-offset: 2px;
}

/* ========================================
   Header & Navigation
   ======================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  height: var(--header-height);
}

.header-inner {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
}

.site-logo img {
  width: 2rem;
  height: 2rem;
  object-fit: contain;
}

.site-logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.language-switcher {
  display: flex;
  align-items: center;
}

.language-select {
  height: 2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: 0 var(--spacing-lg) 0 var(--spacing-sm);
  cursor: pointer;
}

.language-select:hover {
  border-color: #bfdbfe;
}

.language-select:focus {
  outline: 2px solid rgba(37, 99, 235, 0.25);
  outline-offset: 1px;
}

.nav-link {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.nav-link:hover,
.nav-link:focus {
  color: var(--color-accent-primary);
  background-color: rgba(37, 99, 235, 0.05);
  text-decoration: none;
}

.nav-link[aria-current="page"] {
  color: var(--color-accent-primary);
  background-color: rgba(37, 99, 235, 0.1);
}

.header-cta {
  font-size: var(--font-size-label-large);
  font-weight: 600;
  white-space: nowrap;
}

/* Mobile Navigation Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: var(--spacing-sm);
  cursor: pointer;
  color: var(--color-text-primary);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .header-actions {
    gap: var(--spacing-sm);
  }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: var(--spacing-xl);
    gap: var(--spacing-md);
    transform: translateX(100%);
    transition: transform 0.3s ease;
  }

  .main-nav.is-open {
    transform: translateX(0);
  }

  .nav-link {
    font-size: var(--font-size-lg);
    width: 100%;
    text-align: center;
  }

  .language-select {
    height: 1.9rem;
    font-size: var(--font-size-xs);
    padding-right: var(--spacing-md);
  }
}

/* ========================================
   Breadcrumbs (SEO Important)
   ======================================== */
.breadcrumbs {
  padding: var(--spacing-md) 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.breadcrumbs ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-xs);
}

.breadcrumbs li {
  display: flex;
  align-items: center;
}

.breadcrumbs li:not(:last-child)::after {
  content: '›';
  margin-left: var(--spacing-xs);
  color: var(--color-text-muted);
}

.breadcrumbs a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--color-accent-primary);
  text-decoration: underline;
}

.breadcrumbs [aria-current="page"] {
  color: var(--color-text-primary);
  font-weight: 500;
}

/* ========================================
   Main Content Layout
   ======================================== */
.site-main {
  min-height: calc(100vh - var(--header-height) - 20rem);
}

.content-wrapper {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
}

.article-wrapper {
  max-width: var(--max-width-article);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
}

/* ========================================
   Cards (matching theme.py ModernCard)
   ======================================== */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  padding: var(--spacing-lg);
  transition: all 0.2s ease-in-out;
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card--no-hover:hover {
  box-shadow: var(--shadow-md);
}

.card--glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Shared card elevation across site sections */
.market-gauge-wrap,
.ta-card,
.sidebar-card,
.related-card,
.toc-container {
  box-shadow: var(--shadow-md);
}

/* ========================================
   Article Styles
   ======================================== */
.article {
  background: var(--color-surface);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  padding: var(--spacing-2xl);
  margin-bottom: var(--spacing-xl);
}

.article-header {
  margin-bottom: var(--spacing-2xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border-light);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.article-meta time {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.article-category {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-accent-primary);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.article-title {
  font-size: var(--font-size-4xl);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.article-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  font-weight: 400;
  line-height: var(--line-height-normal);
}

.article-content {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
}

.article-content > p:first-child {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
}

/* Article Section Styling */
.article-section {
  margin: var(--spacing-2xl) 0;
}

.article-section h2 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-border-light);
}

/* ── Scoped heading scale inside article prose ── */
.section-content h2,
.subsection-content h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin: var(--spacing-xl) 0 var(--spacing-sm) 0;
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
}

.section-content h3,
.subsection-content h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text-primary);
  margin: var(--spacing-lg) 0 var(--spacing-xs) 0;
  line-height: var(--line-height-tight);
}

.section-content h4,
.subsection-content h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text-secondary);
  margin: var(--spacing-md) 0 var(--spacing-xs) 0;
  line-height: var(--line-height-normal);
}

.section-content h5,
.subsection-content h5 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-secondary);
  margin: var(--spacing-sm) 0 var(--spacing-xs) 0;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Lists in Articles */
.article-content ul,
.article-content ol {
  margin: var(--spacing-md) 0;
  padding-left: var(--spacing-xl);
}

.article-content li {
  margin-bottom: var(--spacing-sm);
  line-height: var(--line-height-relaxed);
}

.article-content ul li::marker {
  color: var(--color-accent-primary);
}

/* Blockquotes */
.article-content blockquote {
  margin: var(--spacing-xl) 0;
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(79, 70, 229, 0.05));
  border-left: 4px solid var(--color-accent-primary);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  font-style: italic;
  color: var(--color-text-secondary);
}

.article-content blockquote cite {
  display: block;
  margin-top: var(--spacing-md);
  font-size: var(--font-size-sm);
  font-style: normal;
  font-weight: 600;
  color: var(--color-text-primary);
}

/* Code blocks */
.article-content code {
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: 0.9em;
  padding: 0.2em 0.4em;
  background: var(--color-border-light);
  border-radius: var(--radius-sm);
}

.article-content pre {
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-lg);
  padding-top: 2.75rem;
  background: var(--color-text-primary);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  position: relative;
}

.article-content pre code {
  background: none;
  padding: 0;
  color: #e2e8f0;
}

.copy-code-btn {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  color: #94a3b8;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  padding: 0;
}

.copy-code-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #e2e8f0;
  border-color: rgba(255, 255, 255, 0.3);
}

.copy-code-btn.copied {
  color: #4ade80;
  border-color: #4ade80;
  background: rgba(74, 222, 128, 0.1);
}

  color: #e2e8f0;
}

/* Tables */
.article-content table {
  width: 100%;
  margin: var(--spacing-xl) 0;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.article-content th,
.article-content td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.article-content th {
  font-weight: 600;
  background: var(--color-border-light);
}

.article-content tr:hover {
  background: var(--color-border-light);
}

/* Images */
.article-content img,
.article-body img,
.section-content img,
.subsection-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  margin: var(--spacing-xl) 0;
}

.article-content figure,
.article-body figure,
.section-content figure {
  margin: var(--spacing-xl) 0;
}

.article-content figcaption,
.section-content figcaption {
  margin-top: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-align: center;
}

/* ========================================
   Recipe Card Styles
   ======================================== */
.recipe-card {
  background: var(--color-surface);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.recipe-hero {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.recipe-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.recipe-hero-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-xl);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
  color: white;
}

.recipe-content {
  padding: var(--spacing-xl);
}

.recipe-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-light);
}

.recipe-meta-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
}

.recipe-meta-icon {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-accent-primary);
  border-radius: 50%;
}

.recipe-meta-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.recipe-meta-value {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-primary);
}

.recipe-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
}

.recipe-tag {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--color-border-light);
  color: var(--color-text-secondary);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.recipe-tag--phase {
  background: rgba(22, 163, 74, 0.1);
  color: var(--color-success);
}

.recipe-tag--condition {
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-accent-primary);
}

/* Ingredients & Instructions */
.recipe-ingredients,
.recipe-instructions {
  margin-bottom: var(--spacing-xl);
}

.recipe-ingredients h2,
.recipe-instructions h2 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
}

.recipe-ingredients ul {
  list-style: none;
  padding: 0;
}

.recipe-ingredients li {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.recipe-ingredients li::before {
  content: '';
  width: 0.5rem;
  height: 0.5rem;
  background: var(--color-accent-primary);
  border-radius: 50%;
  flex-shrink: 0;
}

.recipe-instructions ol {
  list-style: none;
  padding: 0;
  counter-reset: step;
}

.recipe-instructions li {
  position: relative;
  padding: var(--spacing-md) 0 var(--spacing-md) var(--spacing-3xl);
  border-bottom: 1px solid var(--color-border-light);
  counter-increment: step;
}

.recipe-instructions li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: var(--spacing-md);
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-primary);
  color: white;
  font-weight: 600;
  font-size: var(--font-size-sm);
  border-radius: 50%;
}

/* Nutrition Info */
.nutrition-info {
  background: var(--color-border-light);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
}

.nutrition-info h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
}

.nutrition-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr));
  gap: var(--spacing-md);
}

.nutrition-item {
  text-align: center;
  padding: var(--spacing-md);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
}

.nutrition-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-accent-primary);
}

.nutrition-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ========================================
   Topic Cluster / Hub Page Styles
   ======================================== */
.cluster-hero {
  background: var(--color-accent-gradient);
  color: white;
  padding: var(--spacing-3xl) var(--spacing-lg);
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.cluster-hero h1 {
  color: white;
  font-size: var(--font-size-5xl);
  margin-bottom: var(--spacing-md);
}

.cluster-hero p {
  font-size: var(--font-size-xl);
  opacity: 0.9;
  max-width: 40rem;
  margin: 0 auto;
}

.cluster-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(20rem, 1fr));
  gap: var(--spacing-xl);
}

.cluster-item {
  background: var(--color-surface);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  padding: var(--spacing-xl);
  transition: all 0.2s ease;
  text-decoration: none;
  color: inherit;
  display: block;
  position: relative;
}

.cluster-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  text-decoration: none;
}

.cluster-item h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.cluster-item p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-md);
}

.cluster-item-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* ========================================
   Sidebar (for articles with TOC)
   ======================================== */
.layout-with-sidebar {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
}

/* Prevent grid children (especially code blocks) from overflowing their column */
.layout-with-sidebar > * {
  min-width: 0;
}

@media (min-width: 1024px) {
  .layout-with-sidebar {
    grid-template-columns: 1fr 16rem;
  }
}

.sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--spacing-xl));
  align-self: start;
}

.toc {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border);
}

.toc-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc-list li {
  margin-bottom: var(--spacing-sm);
}

.toc-list a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  display: block;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  border-left: 2px solid transparent;
  transition: all 0.2s ease;
}

.toc-list a:hover {
  color: var(--color-accent-primary);
  background: rgba(37, 99, 235, 0.05);
}

.toc-list a.is-active {
  color: var(--color-accent-primary);
  border-left-color: var(--color-accent-primary);
  background: rgba(37, 99, 235, 0.1);
}

/* Nested TOC */
.toc-list .toc-list {
  margin-left: var(--spacing-md);
  margin-top: var(--spacing-xs);
}

.toc-list .toc-list a {
  font-size: var(--font-size-xs);
}

/* ========================================
   Buttons (matching theme.py ModernButton)
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 600;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-xl);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
}

.btn:focus {
  outline: 2px solid var(--color-accent-primary);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--color-accent-primary);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
  background: #1d4ed8;
  box-shadow: var(--shadow-md);
}

.btn--secondary {
  background: var(--color-surface);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn--secondary:hover {
  background: var(--color-border-light);
  border-color: var(--color-text-muted);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-secondary);
}

.btn--ghost:hover {
  background: var(--color-border-light);
  color: var(--color-text-primary);
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
  background: var(--color-text-primary);
  color: #e2e8f0;
  padding: var(--spacing-3xl) var(--spacing-lg);
  margin-top: var(--spacing-3xl);
}

.footer-inner {
  max-width: var(--max-width-content);
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
  color: white;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-md);
}

.footer-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-section li {
  margin-bottom: var(--spacing-sm);
}

.footer-section a {
  color: #94a3b8;
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color 0.2s ease;
}

.footer-section a:hover {
  color: white;
}

.footer-bottom {
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--font-size-sm);
  color: #64748b;
}

/* ========================================
   Medical Disclaimer Box
   ======================================== */
.disclaimer-box {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(234, 179, 8, 0.1));
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

.disclaimer-box h4 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-warning);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-sm);
}

.disclaimer-box p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

/* ========================================
   Author/Expert Box
   ======================================== */
.author-box {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  background: var(--color-border-light);
  border-radius: var(--radius-xl);
  margin: var(--spacing-2xl) 0;
}

.author-avatar {
  width: 5rem;
  height: 5rem;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.author-info h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
}

.author-credentials {
  font-size: var(--font-size-sm);
  color: var(--color-accent-primary);
  margin-bottom: var(--spacing-sm);
}

.author-bio {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

/* ========================================
   Related Content Section
   ======================================== */
.related-content {
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-2xl);
  border-top: 1px solid var(--color-border);
}

.related-content h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-xl);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
  gap: var(--spacing-lg);
}

.related-item {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  text-decoration: none;
  transition: all 0.2s ease;
}

.related-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.related-item-image {
  aspect-ratio: 16 / 9;
  object-fit: cover;
  width: 100%;
}

.related-item-content {
  padding: var(--spacing-md);
}

.related-item-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
  line-height: var(--line-height-tight);
}

.related-item-type {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* ========================================
   Content Type Badges
   ======================================== */
.content-type-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.content-type-badge--article {
  background: var(--color-accent-primary);
  color: white;
}

.content-type-badge--recipe {
  background: var(--color-success);
  color: white;
}

/* ========================================
   Filter Buttons
   ======================================== */
.content-filters {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 2rem;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn:hover {
  border-color: var(--color-accent-primary);
  color: var(--color-accent-primary);
}

.filter-btn.is-active {
  background: var(--color-accent-primary);
  border-color: var(--color-accent-primary);
  color: white;
}

/* ========================================
   Utility Classes
   ======================================== */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center {
  text-align: center;
}

.text-muted {
  color: var(--color-text-secondary);
}

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mb-xl { margin-bottom: var(--spacing-xl); }

/* ========================================
   E-E-A-T Author Components (YMYL Compliance)
   ======================================== */

/* Author Byline (top of article - critical for E-E-A-T) */
.author-byline {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--color-background);
  border-radius: var(--radius-xl);
  margin-bottom: 2rem;
  border: 1px solid var(--color-border-light);
}

.author-byline-info {
  flex: 1;
}

.author-avatar-small {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid var(--color-border);
}

.author-name {
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--color-text-primary);
  margin-bottom: 0.25rem;
}

.author-name a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s ease;
}

.author-name a:hover {
  color: var(--color-accent-primary);
}

.author-title {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin: 0.25rem 0 0.5rem 0;
}

.author-bio-short {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin: 0;
}

.author-meta {
  display: flex;
  gap: 1rem;
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Credentials Badges */
.author-credentials-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.5rem;
  background: var(--color-accent-gradient);
  color: white;
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 600;
  margin-left: 0.5rem;
}

/* Medical Review Badge */
.medical-review-badge {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: linear-gradient(135deg, rgba(22, 163, 74, 0.05), rgba(5, 150, 105, 0.05));
  border-left: 4px solid var(--color-success);
  border-radius: var(--radius-md);
  margin-bottom: 2rem;
}

.medical-review-badge-icon {
  width: 24px;
  height: 24px;
  color: var(--color-success);
  flex-shrink: 0;
}

.medical-review-badge-content {
  flex: 1;
}

.medical-review-badge strong {
  color: var(--color-success);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  margin-bottom: 0.25rem;
}

.medical-review-badge p {
  margin: 0.25rem 0;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.medical-review-badge time {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Enhanced Author Box (bottom of article) */
.author-box {
  margin-top: 3rem;
  padding: 2rem;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.02), rgba(79, 70, 229, 0.02));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.author-box-header {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.author-avatar-large {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 3px solid var(--color-border);
}

.author-box-info h4 {
  margin: 0 0 0.5rem 0;
  font-size: 1.25rem;
  color: var(--color-text-primary);
}

.author-box-bio {
  line-height: 1.75;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

/* Credentials List */
.author-credentials-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.credential-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 0.75rem;
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-primary);
}

/* Author card certification badges: uniform size and alignment */
.author-certifications-badges {
  margin-top: 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.author-certifications-badges .author-cert-embed {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  overflow: hidden;
  flex-shrink: 0;
}

.author-certifications-badges .author-cert-embed iframe {
  width: 150px !important;
  height: 270px !important;
  transform: scale(0.37);
  transform-origin: 0 0;
}

.author-certifications-badges .author-cert-badge-link {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.author-certifications-badges .author-cert-badge-img {
  display: block;
  height: 56px;
  width: auto;
  max-width: 56px;
  object-fit: contain;
  vertical-align: middle;
}

/* Expertise Tags */
.expertise-section {
  margin-top: 1.5rem;
}

.expertise-section h5 {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.expertise-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.expertise-tag {
  padding: 0.375rem 0.75rem;
  background: var(--color-accent-primary);
  color: white;
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 600;
}

/* Education List */
.education-list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0 0;
}

.education-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.education-list li:last-child {
  border-bottom: none;
}

.education-degree {
  font-weight: 600;
  color: var(--color-text-primary);
}

.education-institution {
  color: var(--color-text-secondary);
}

.education-year {
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

/* Author Profile Page Styles */
.author-profile-hero {
  padding: 3rem 0;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.03), rgba(79, 70, 229, 0.03));
  border-radius: var(--radius-2xl);
  margin-bottom: 3rem;
}

.author-profile-header {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-bottom: 1.5rem;
}

.author-avatar-hero {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid white;
  box-shadow: var(--shadow-lg);
}

.author-profile-name {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0 0 0.5rem 0;
}

.author-profile-title {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin: 0 0 1rem 0;
}

.author-social-links {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

.author-social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: white;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  transition: all 0.2s ease;
  text-decoration: none;
}

.author-social-link:hover {
  background: var(--color-accent-primary);
  color: white;
  border-color: var(--color-accent-primary);
  transform: translateY(-2px);
}

.author-stats {
  display: flex;
  gap: 2rem;
  margin-top: 1.5rem;
}

.author-stat {
  text-align: center;
}

.author-stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent-primary);
  display: block;
}

.author-stat-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Certifications Display */
.certifications-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.certification-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
}

.certification-icon {
  width: 20px;
  height: 20px;
  color: var(--color-accent-primary);
  flex-shrink: 0;
}

/* Affiliations Display */
.affiliations-list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0 0;
}

.affiliations-list li {
  padding: 0.5rem 0 0.5rem 1.5rem;
  position: relative;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.affiliations-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--color-accent-primary);
  font-weight: bold;
}

/* Author Articles Grid */
.author-articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.author-article-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all 0.2s ease;
  text-decoration: none;
  color: inherit;
  display: block;
}

.author-article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent-primary);
}

.author-article-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.author-article-content {
  padding: 1.5rem;
}

.author-article-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 0.5rem 0;
  line-height: 1.4;
}

.author-article-excerpt {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

.author-article-meta {
  display: flex;
  gap: 1rem;
  margin-top: 0.75rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Reviewer Badge (small inline) */
.reviewer-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.5rem;
  background: rgba(22, 163, 74, 0.1);
  color: var(--color-success);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
}

.reviewer-badge svg {
  width: 12px;
  height: 12px;
}

/* Years of Experience Badge */
.experience-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(79, 70, 229, 0.1));
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent-primary);
  margin-top: 0.5rem;
}

.experience-badge svg {
  width: 16px;
  height: 16px;
}

/* Mobile Responsive - Author Components */
@media (max-width: 640px) {
  .author-byline {
    flex-direction: column;
    text-align: center;
    padding: 1.25rem;
  }
  
  .author-profile-header {
    flex-direction: column;
    text-align: center;
  }
  
  .author-box-header {
    flex-direction: column;
    text-align: center;
  }
  
  .author-stats {
    justify-content: center;
  }
  
  .medical-review-badge {
    flex-direction: column;
    text-align: center;
  }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
  .site-header,
  .site-footer,
  .sidebar,
  .skip-link,
  .nav-toggle,
  .content-filters,
  .btn {
    display: none !important;
  }

  body {
    background: white;
    color: black;
    font-size: 12pt;
  }

  .article,
  .recipe-card,
  .card {
    box-shadow: none;
    border: none;
    padding: 0;
  }

  a {
    color: black;
    text-decoration: underline;
  }

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
  }
}