/* ============================================
   CD Deposits Education - Main Stylesheet
   ============================================ */

/* ============================================
   CSS Variables
   ============================================ */
:root {
  /* Colors */
  --color-primary: #003d5c;
  --color-secondary: #0066a1;
  --color-accent: #f0f4f8;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-link: #0066a1;
  --color-link-hover: #004d7a;
  --color-border: #e0e0e0;
  --color-white: #ffffff;
  --color-warning: #fff3cd;
  --color-warning-border: #ffc107;
  
  /* Typography */
  --font-heading: 'Merriweather', Georgia, serif;
  --font-body: 'Open Sans', Arial, Helvetica, sans-serif;
  
  /* Font Sizes */
  --font-size-h1: 36px;
  --font-size-h2: 28px;
  --font-size-h3: 22px;
  --font-size-body: 16px;
  --font-size-small: 14px;
  
  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-xxl: 64px;
  
  /* Layout */
  --max-width: 1200px;
  --content-width: 800px;
  --border-radius: 4px;
  
  /* Transitions */
  --transition-speed: 0.3s;
}

/* ============================================
   CSS Reset & Base Styles
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-white);
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

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

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

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

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

.lead {
  font-size: 1.125rem;
  font-weight: 400;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition-speed);
}

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

/* ============================================
   Layout Containers
   ============================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

/* ============================================
   Header
   ============================================ */
.site-header {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-md) 0;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo a {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
  text-decoration: none;
}

.logo a:hover {
  color: var(--color-white);
  opacity: 0.9;
}

/* Navigation */
.main-nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.main-nav a {
  color: var(--color-white);
  font-weight: 600;
  text-decoration: none;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  transition: background-color var(--transition-speed);
}

.main-nav a:hover {
  background-color: rgba(255, 255, 255, 0.1);
  text-decoration: none;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--color-white);
  margin: 3px 0;
  transition: all var(--transition-speed);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  height: 500px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  text-align: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to bottom, rgba(0, 61, 92, 0.7), rgba(0, 61, 92, 0.9));
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  padding: 0 var(--spacing-md);
}

.hero h1 {
  color: var(--color-white);
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
  padding: var(--spacing-xxl) 0;
  min-height: 60vh;
}

.intro-section {
  text-align: center;
  margin-bottom: var(--spacing-xxl);
}

.intro-section h2 {
  margin-top: 0;
}

/* ============================================
   Article Grid
   ============================================ */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.article-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.card-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-speed);
}

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

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

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
  margin-top: 0;
}

.card-title a {
  color: var(--color-primary);
  text-decoration: none;
}

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

.card-excerpt {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
  font-size: 0.95rem;
}

.card-link {
  display: inline-block;
  color: var(--color-secondary);
  font-weight: 600;
  text-decoration: none;
}

.card-link:hover {
  text-decoration: underline;
}

/* ============================================
   Article Content
   ============================================ */
.article-content {
  padding: var(--spacing-xxl) 0;
}

.article-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.article-header h1 {
  margin-bottom: var(--spacing-sm);
}

.article-meta {
  color: var(--color-text-light);
  font-size: var(--font-size-small);
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
}

.article-image {
  margin-bottom: var(--spacing-xl);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.article-image img {
  width: 100%;
  height: auto;
  display: block;
}

.article-body {
  max-width: var(--content-width);
  margin: 0 auto;
}

.article-body ul,
.article-body ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
}

.article-body li {
  margin-bottom: var(--spacing-sm);
}

/* ============================================
   Affiliate Links
   ============================================ */
.affiliate-link {
  color: var(--color-secondary);
  text-decoration: underline;
  font-weight: 600;
  transition: color var(--transition-speed);
}

.affiliate-link:hover {
  color: var(--color-link-hover);
}

.affiliate-link::after {
  content: ' ↗';
  font-size: 0.85em;
}

/* ============================================
   Tables
   ============================================ */
.table-wrapper {
  overflow-x: auto;
  margin: var(--spacing-lg) 0;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-white);
}

.comparison-table th,
.comparison-table td {
  padding: var(--spacing-sm);
  border: 1px solid var(--color-border);
  text-align: left;
}

.comparison-table thead {
  background-color: var(--color-accent);
}

.comparison-table th {
  font-weight: 700;
  color: var(--color-primary);
}

.comparison-table tbody tr:hover {
  background-color: rgba(0, 102, 161, 0.05);
}

/* ============================================
   Disclaimer Box
   ============================================ */
.disclaimer-box,
.article-disclaimer {
  background-color: var(--color-warning);
  border-left: 4px solid var(--color-warning-border);
  padding: var(--spacing-md);
  margin: var(--spacing-xl) 0;
  border-radius: var(--border-radius);
}

.disclaimer-box p,
.article-disclaimer p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* ============================================
   Related Articles
   ============================================ */
.related-articles {
  margin-top: var(--spacing-xxl);
  padding-top: var(--spacing-xl);
  border-top: 2px solid var(--color-border);
}

.related-articles h3 {
  margin-top: 0;
  margin-bottom: var(--spacing-lg);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.related-card {
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  text-decoration: none;
  transition: background-color var(--transition-speed);
}

.related-card:hover {
  background-color: var(--color-accent);
  text-decoration: none;
}

.related-card h4 {
  color: var(--color-primary);
  font-size: 1rem;
  margin-bottom: var(--spacing-xs);
}

.related-card p {
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* ============================================
   Legal Pages
   ============================================ */
.legal-content {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--spacing-xxl) var(--spacing-md);
}

.legal-content h1 {
  margin-bottom: var(--spacing-lg);
}

.legal-content h2 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.legal-content ul {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
}

/* ============================================
   Contact Form
   ============================================ */
.contact-form {
  max-width: 600px;
  margin: var(--spacing-xl) auto;
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--color-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  transition: border-color var(--transition-speed);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-secondary);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.submit-btn {
  background-color: var(--color-secondary);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--border-radius);
  font-size: var(--font-size-body);
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-speed);
}

.submit-btn:hover {
  background-color: var(--color-link-hover);
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-xxl) 0 var(--spacing-md);
  margin-top: var(--spacing-xxl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
  color: var(--color-white);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
  margin-top: 0;
}

.footer-section p {
  font-size: 0.95rem;
  line-height: 1.6;
}

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

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

.footer-section a {
  color: var(--color-white);
  text-decoration: none;
  opacity: 0.9;
  transition: opacity var(--transition-speed);
}

.footer-section a:hover {
  opacity: 1;
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: var(--spacing-md);
  text-align: center;
  font-size: var(--font-size-small);
}

.footer-bottom p {
  margin-bottom: var(--spacing-xs);
}

.affiliate-notice {
  opacity: 0.8;
}

.affiliate-notice a {
  color: var(--color-white);
  text-decoration: underline;
}

/* ============================================
   Responsive Design
   ============================================ */

/* Tablet (768px - 1023px) */
@media (max-width: 1023px) {
  .articles-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
}

/* Mobile (< 768px) */
@media (max-width: 767px) {
  :root {
    --font-size-h1: 28px;
    --font-size-h2: 24px;
    --font-size-h3: 20px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
  }

  /* Header */
  .header-content {
    flex-wrap: wrap;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .nav-menu {
    display: none;
    flex-direction: column;
    width: 100%;
    margin-top: var(--spacing-md);
    gap: 0;
  }

  .nav-menu.active {
    display: flex;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 0;
  }

  .main-nav li {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
  }

  .main-nav a {
    display: block;
    padding: var(--spacing-sm);
  }

  /* Hero */
  .hero {
    height: 400px;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  /* Articles Grid */
  .articles-grid {
    grid-template-columns: 1fr;
  }

  /* Related Grid */
  .related-grid {
    grid-template-columns: 1fr;
  }

  /* Footer */
  .footer-content {
    grid-template-columns: 1fr;
  }

  /* Tables */
  .comparison-table {
    font-size: 0.9rem;
  }

  .comparison-table th,
  .comparison-table td {
    padding: var(--spacing-xs);
  }
}

/* Small Mobile (< 480px) */
@media (max-width: 479px) {
  .container {
    padding: 0 var(--spacing-sm);
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .card-content {
    padding: var(--spacing-sm);
  }
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center {
  text-align: center;
}

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

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

/* ============================================
   Print Styles
   ============================================ */
@media print {
  .site-header,
  .site-footer,
  .mobile-menu-toggle,
  .related-articles {
    display: none;
  }

  body {
    font-size: 12pt;
    line-height: 1.5;
  }

  a {
    text-decoration: underline;
  }

  .article-content {
    padding: 0;
  }
}