/* ===================================
   Variables CSS
   =================================== */
:root {
  /* Palette française */
  --color-primary: #073B7A;
  --color-accent: #E53935;
  --color-text: #2C3E50;
  --color-text-light: #7F8C8D;
  --color-bg: #FFFFFF;
  --color-bg-light: #F8F9FA;
  --color-border: #E0E0E0;

  /* Typographie */
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-heading: "Georgia", serif;

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

  /* Tailles */
  --max-width: 1200px;
  --border-radius: 8px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
}

/* ===================================
   Reset et base
   =================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-main);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

h1 {
  font-size: 2.25rem;
  margin-bottom: var(--spacing-lg);
}

h2 {
  font-size: 1.875rem;
  margin-top: var(--spacing-xl);
}

h3 {
  font-size: 1.5rem;
  margin-top: var(--spacing-lg);
}

h4 {
  font-size: 1.25rem;
}

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

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

a:hover {
  color: var(--color-accent);
}

strong {
  font-weight: 600;
}

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

.section {
  padding: var(--spacing-xxl) 0;
}

.section-alt {
  background-color: var(--color-bg-light);
}

/* ===================================
   Header
   =================================== */
.site-header {
  background-color: var(--color-bg);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

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

.logo svg {
  width: 32px;
  height: 32px;
}

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

.main-nav a {
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.5rem 0;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* Barre de recherche */
.search-bar {
  position: relative;
  max-width: 500px;
  margin: 0 auto;
}

.search-bar input {
  width: 100%;
  padding: 0.875rem 3rem 0.875rem 1.25rem;
  font-size: 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  transition: border-color 0.2s ease;
}

.search-bar input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.search-bar button {
  position: absolute;
  right: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--color-primary);
}

/* ===================================
   Hero
   =================================== */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #0a5099 100%);
  color: white;
  padding: var(--spacing-xxl) 0;
  text-align: center;
}

.hero h1 {
  color: white;
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xl);
  opacity: 0.95;
}

/* ===================================
   Boutons
   =================================== */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  text-decoration: none;
}

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

.btn-primary:hover {
  background-color: #d32f2f;
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn-outline:hover {
  background-color: var(--color-primary);
  color: white;
}

/* ===================================
   Cards
   =================================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.card {
  background-color: var(--color-bg);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--color-border);
}

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

.card h3 {
  margin-top: 0;
  font-size: 1.375rem;
}

.card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--spacing-md);
  color: var(--color-accent);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: var(--spacing-md);
  font-weight: 600;
  color: var(--color-primary);
}

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

/* ===================================
   Tableaux de comparaison
   =================================== */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
  background-color: var(--color-bg);
  box-shadow: var(--shadow);
  border-radius: var(--border-radius);
  overflow: hidden;
}

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

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

.comparison-table th {
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.comparison-table tbody tr:hover {
  background-color: var(--color-bg-light);
}

.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

/* ===================================
   Listes
   =================================== */
ul, ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
}

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

.checklist {
  list-style: none;
  padding-left: 0;
}

.checklist li {
  padding-left: 2rem;
  position: relative;
  margin-bottom: var(--spacing-sm);
}

.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: bold;
  font-size: 1.25rem;
}

/* ===================================
   Fil d'Ariane (Breadcrumb)
   =================================== */
.breadcrumb {
  padding: var(--spacing-md) 0;
  font-size: 0.9rem;
}

.breadcrumb ol {
  display: flex;
  list-style: none;
  padding: 0;
  margin: 0;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  margin: 0;
}

.breadcrumb li::after {
  content: "›";
  margin-left: 0.5rem;
  color: var(--color-text-light);
}

.breadcrumb li:last-child::after {
  content: "";
}

.breadcrumb a {
  color: var(--color-text-light);
}

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

/* ===================================
   Sections de contenu
   =================================== */
.content-header {
  margin-bottom: var(--spacing-xl);
}

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

.quick-selection {
  background-color: var(--color-bg-light);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--color-accent);
  margin: var(--spacing-xl) 0;
}

.selection-item {
  margin-bottom: var(--spacing-lg);
}

.selection-item:last-child {
  margin-bottom: 0;
}

.selection-item h3 {
  margin-top: 0;
  margin-bottom: var(--spacing-xs);
  font-size: 1.25rem;
}

.faq-section {
  margin-top: var(--spacing-xl);
}

.faq-item {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.faq-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.faq-item h3 {
  color: var(--color-primary);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-sm);
}

/* ===================================
   Call to Action
   =================================== */
.cta-box {
  background: linear-gradient(135deg, var(--color-primary) 0%, #0a5099 100%);
  color: white;
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
  text-align: center;
  margin: var(--spacing-xxl) 0;
}

.cta-box h2,
.cta-box h3 {
  color: white;
  margin-top: 0;
}

.cta-box p {
  font-size: 1.125rem;
  opacity: 0.95;
}

/* ===================================
   Formulaires
   =================================== */
.form-group {
  margin-bottom: var(--spacing-md);
}

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

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem;
  font-size: 1rem;
  font-family: var(--font-main);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  transition: border-color 0.2s ease;
}

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

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

.form-required {
  color: var(--color-accent);
}

/* ===================================
   Newsletter
   =================================== */
.newsletter {
  background-color: var(--color-bg-light);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
  text-align: center;
}

.newsletter h3 {
  margin-top: 0;
}

.newsletter-form {
  display: flex;
  gap: var(--spacing-sm);
  max-width: 500px;
  margin: var(--spacing-lg) auto 0;
}

.newsletter-form input {
  flex: 1;
  padding: 0.875rem;
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
}

.newsletter-form button {
  padding: 0.875rem 2rem;
  white-space: nowrap;
}

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

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

.footer-section h4 {
  color: white;
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
}

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

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

.footer-section a {
  color: rgba(255, 255, 255, 0.9);
  transition: color 0.2s ease;
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9rem;
}

/* ===================================
   Responsive
   =================================== */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }

  .header-content {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .main-nav ul {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
  }

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

  .hero p {
    font-size: 1.125rem;
  }

  h1 {
    font-size: 1.875rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.25rem;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

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

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

  .newsletter-form {
    flex-direction: column;
  }

  .section {
    padding: var(--spacing-lg) 0;
  }
}

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

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

.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); }