/* ===================================================================
   Diabetic Tested Recipes - Custom CSS
   Optimized for 60+ Audience
   =================================================================== */

/* ===================================================================
   CSS Variables - Color Palette
   =================================================================== */
:root {
  /* Primary Colors (Teal/Blue-green) */
  --color-primary: #0d9488;
  --color-primary-dark: #0f766e;
  --color-primary-light: #5eead4;

  /* Secondary Colors (Warm Orange) */
  --color-secondary: #ea580c;
  --color-secondary-dark: #c2410c;
  --color-secondary-light: #fb923c;

  /* Neutral Colors */
  --color-background: #ffffff;
  --color-surface: #f9fafb;
  --color-text: #1f2937;
  --color-text-muted: #6b7280;
  --color-border: #e5e7eb;

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

  /* Font Sizes (Larger for 60+ audience) */
  --font-size-base: 20px;
  --font-size-lg: 24px;
  --font-size-xl: 28px;
  --font-size-2xl: 32px;
  --font-size-3xl: 40px;
  --font-size-4xl: 48px;

  /* Line Heights (Increased for readability) */
  --line-height-tight: 1.3;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* ===================================================================
   Base Typography - Larger for 60+ Readers
   =================================================================== */
html {
  font-size: var(--font-size-base);
}

body {
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

h1, h2, h3, h4, h5, h6 {
  line-height: var(--line-height-tight);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

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

h2 {
  font-size: var(--font-size-3xl);
}

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

h4 {
  font-size: var(--font-size-xl);
}

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

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

a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* ===================================================================
   Buttons - Large Click Targets for Easy Interaction
   =================================================================== */
.button,
button,
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-lg);
  font-weight: 600;
  line-height: 1;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 50px;
  min-width: 120px;
}

.button-primary {
  background-color: var(--color-primary);
  color: white;
}

.button-primary:hover {
  background-color: var(--color-primary-dark);
  text-decoration: none;
  color: white;
}

.button-secondary {
  background-color: var(--color-secondary);
  color: white;
}

.button-secondary:hover {
  background-color: var(--color-secondary-dark);
  text-decoration: none;
  color: white;
}

.button-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.button-outline:hover {
  background-color: var(--color-primary);
  color: white;
  text-decoration: none;
}

/* ===================================================================
   Recipe Cards - Clean, Visual, Easy to Scan
   =================================================================== */
.recipe-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.recipe-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.recipe-card-image {
  position: relative;
  width: 100%;
  padding-top: 66.67%; /* 3:2 aspect ratio */
  overflow: hidden;
  background: var(--color-surface);
}

.recipe-card-image img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.recipe-card:hover .recipe-card-image img {
  transform: scale(1.05);
}

.recipe-card-content {
  padding: var(--spacing-md);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.recipe-card-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
  line-height: var(--line-height-tight);
}

.recipe-card-title a {
  color: var(--color-text);
}

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

.recipe-card-excerpt {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-relaxed);
  flex-grow: 1;
}

.recipe-card-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: 18px;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-sm);
  margin-top: auto;
}

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

/* ===================================================================
   Recipe Grid - Responsive Layout
   =================================================================== */
.recipe-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

@media (min-width: 768px) {
  .recipe-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .recipe-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===================================================================
   Category Navigation Icons
   =================================================================== */
.category-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
  margin: var(--spacing-xl) 0;
}

.category-nav-item {
  flex: 1 1 auto;
  min-width: 120px;
  max-width: 180px;
  text-align: center;
  padding: var(--spacing-md);
  background: white;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all 0.2s ease;
  text-decoration: none;
}

.category-nav-item:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.category-nav-icon {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-xs);
  display: block;
}

.category-nav-label {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
}

/* ===================================================================
   Hero Section - Homepage Banner
   =================================================================== */
.hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: white;
  padding: var(--spacing-xl) var(--spacing-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-xl);
  position: relative;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: white;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-lg);
  line-height: var(--line-height-relaxed);
  opacity: 0.95;
}

.hero-button {
  background: var(--color-secondary);
  color: white;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
  font-weight: 600;
  border-radius: var(--radius-md);
  display: inline-block;
  text-decoration: none;
  transition: all 0.2s ease;
}

.hero-button:hover {
  background: var(--color-secondary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
  color: white;
}

/* ===================================================================
   Callout Boxes - Tips, Notes, Warnings
   =================================================================== */
.callout {
  padding: var(--spacing-md) var(--spacing-lg);
  border-left: 4px solid var(--color-primary);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  margin: var(--spacing-lg) 0;
}

.callout-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.callout-icon {
  font-size: var(--font-size-2xl);
}

.callout-content {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
}

.callout-tip {
  border-left-color: var(--color-primary);
  background: #ecfdf5;
}

.callout-warning {
  border-left-color: var(--color-secondary);
  background: #fff7ed;
}

/* ===================================================================
   Ingredient and Instruction Lists
   =================================================================== */
.ingredient-list,
.instruction-list {
  list-style: none;
  padding: 0;
  margin: var(--spacing-lg) 0;
}

.ingredient-list li,
.instruction-list li {
  padding: var(--spacing-sm) 0;
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  border-bottom: 1px solid var(--color-border);
}

.ingredient-list li:last-child,
.instruction-list li:last-child {
  border-bottom: none;
}

.instruction-list {
  counter-reset: instruction-counter;
}

.instruction-list li {
  counter-increment: instruction-counter;
  position: relative;
  padding-left: 3.5rem;
}

.instruction-list li::before {
  content: counter(instruction-counter);
  position: absolute;
  left: 0;
  top: var(--spacing-sm);
  background: var(--color-primary);
  color: white;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-size-lg);
}

/* ===================================================================
   Recipe Metadata (Time, Servings, etc.)
   =================================================================== */
.recipe-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  margin: var(--spacing-lg) 0;
}

.recipe-meta-item {
  text-align: center;
  padding: var(--spacing-sm);
}

.recipe-meta-icon {
  font-size: var(--font-size-2xl);
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.recipe-meta-label {
  font-size: 16px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-xs);
}

.recipe-meta-value {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
}

/* ===================================================================
   Print Styles
   =================================================================== */
@media print {
  .no-print,
  header,
  footer,
  .social-share,
  .related-recipes {
    display: none !important;
  }

  body {
    font-size: 14pt;
    line-height: 1.6;
    color: black;
  }

  h1 { font-size: 24pt; }
  h2 { font-size: 20pt; }
  h3 { font-size: 18pt; }

  .recipe-card,
  .callout {
    page-break-inside: avoid;
  }
}

/* ===================================================================
   Accessibility Improvements
   =================================================================== */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: 8px;
  text-decoration: none;
  z-index: 100;
}

.skip-to-content:focus {
  top: 0;
}

/* ===================================================================
   Mobile Optimizations
   =================================================================== */
@media (max-width: 767px) {
  :root {
    --font-size-base: 18px;
    --font-size-4xl: 36px;
  }

  .hero {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .recipe-meta {
    grid-template-columns: 1fr;
  }

  .button,
  button,
  .btn {
    width: 100%;
    display: block;
  }
}