/* ========================================
   VOILURE BLOG - DESIGN SYSTEM
   Identique à la home Voilure
   ======================================== */

/* Variables Design System */
:root {
  /* Couleurs Voilure */
  --voilure-primary: hsl(166, 100%, 24%); /* #007A5E - Vert émeraude */
  --voilure-secondary: hsl(44, 100%, 67%); /* #FFC857 - Jaune doré */
  --voilure-alert: hsl(0, 84%, 60%); /* #E53E3E - Rouge alerte */
  --voilure-neutral: hsl(212, 62%, 15.5%); /* #0B1D3B - Bleu nuit */
  --voilure-surface: hsl(0, 0%, 100%); /* #FFFFFF */
  --voilure-background: hsl(0, 0%, 97.3%); /* #F8F8F8 */
  --voilure-text-primary: hsl(212, 62%, 15.5%); /* #0B1D3B */
  --voilure-text-secondary: hsl(215, 16%, 47%);
  --voilure-border: hsl(214, 32%, 91%);
  
  /* Typographie */
  --font-primary: "Inter", system-ui, sans-serif;
  --font-ui: "Inter", system-ui, sans-serif;
  
  /* Espacements */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  
  /* Rayons */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* Ombres */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 6px 18px rgba(11,29,59,0.12);
  --shadow-lg: 0 20px 40px rgba(11,29,59,0.15);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.6;
  color: var(--voilure-text-primary);
  background-color: var(--voilure-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   HEADER - Identique à Navbar.tsx
   ======================================== */
.blog-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 50;
  padding: 24px 0;
  background-color: var(--voilure-surface);
  transition: all var(--transition-normal);
}

.blog-header.scrolled {
  padding: 12px 0;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

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

/* Logo */
.logo-text {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--voilure-neutral);
  text-decoration: none;
  font-family: var(--font-primary);
  letter-spacing: -0.02em;
}

/* Navigation Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  color: var(--voilure-neutral);
  text-decoration: none;
  font-size: 1.125rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--voilure-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--voilure-primary);
  transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.dropdown-trigger {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}

.chevron {
  transition: transform var(--transition-fast);
}

.nav-dropdown:hover .chevron {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 8px;
  width: 256px;
  background-color: var(--voilure-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--voilure-border);
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-fast);
  z-index: 50;
}

.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: block;
  padding: 12px 16px;
  text-decoration: none;
  color: var(--voilure-text-primary);
  transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
  background-color: var(--voilure-background);
}

.dropdown-title {
  font-weight: 500;
}

.dropdown-desc {
  font-size: 0.875rem;
  color: var(--voilure-text-secondary);
}

/* Nav Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  background-color: var(--voilure-primary);
  color: white;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.btn-primary:hover {
  background-color: hsl(166, 100%, 20%);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  background-color: transparent;
  color: var(--voilure-neutral);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid var(--voilure-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.btn-outline:hover {
  background-color: var(--voilure-background);
  border-color: var(--voilure-neutral);
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  color: var(--voilure-neutral);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.mobile-menu-btn:hover {
  background-color: var(--voilure-background);
}

/* ========================================
   MAIN CONTENT
   ======================================== */
.blog-main {
  min-height: 100vh;
  padding-top: 120px;
  padding-bottom: 80px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.content-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
  text-align: center;
  padding: 80px 24px 60px;
  background: linear-gradient(135deg, var(--voilure-background) 0%, var(--voilure-surface) 100%);
}

.hero-badge {
  display: inline-block;
  padding: 8px 16px;
  background: var(--voilure-primary);
  color: white;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 100px;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--voilure-neutral);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
  line-height: 1.2;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--voilure-text-secondary);
  max-width: 700px;
  margin: 0 auto 32px;
  line-height: 1.6;
}

/* ========================================
   THEMES SECTION
   ======================================== */
.themes-section {
  padding: 64px 24px;
  background: var(--voilure-surface);
}

.themes-section h2 {
  text-align: center;
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--voilure-neutral);
  margin-bottom: 48px;
}

.themes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.theme-card {
  background: var(--voilure-background);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  border: 1px solid var(--voilure-border);
  transition: all var(--transition-normal);
}

.theme-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--voilure-primary);
}

.theme-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.theme-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--voilure-neutral);
  margin-bottom: 12px;
}

.theme-card p {
  color: var(--voilure-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ========================================
   POSTS SECTION
   ======================================== */
.posts-section {
  padding: 64px 24px;
  background: var(--voilure-background);
}

.posts-section h2 {
  text-align: center;
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--voilure-neutral);
  margin-bottom: 48px;
}

.post-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--voilure-neutral);
  margin-bottom: 12px;
  line-height: 1.3;
}

.post-card h3 a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.post-card h3 a:hover {
  color: var(--voilure-primary);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.post-category {
  display: inline-block;
  padding: 4px 10px;
  background: var(--voilure-primary);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

/* ========================================
   METHODOLOGY SECTION
   ======================================== */
.methodology-section {
  padding: 64px 24px;
  background: linear-gradient(135deg, rgba(0, 122, 94, 0.05) 0%, var(--voilure-surface) 100%);
}

.methodology-content {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.methodology-content h2 {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--voilure-neutral);
  margin-bottom: 16px;
}

.methodology-content p {
  color: var(--voilure-text-secondary);
  font-size: 1.1rem;
  line-height: 1.7;
  margin-bottom: 24px;
}

.methodology-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.badge {
  display: inline-block;
  padding: 8px 16px;
  background: var(--voilure-surface);
  border: 1px solid var(--voilure-border);
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--voilure-neutral);
}

/* ========================================
   CTA SECTION
   ======================================== */
.cta-section {
  padding: 80px 24px;
  background: var(--voilure-neutral);
  text-align: center;
}

.cta-section h2 {
  font-size: 2rem;
  font-weight: 700;
  color: white;
  margin-bottom: 16px;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
  max-width: 500px;
  margin: 0 auto 32px;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  background-color: var(--voilure-secondary);
  color: var(--voilure-neutral);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.btn-secondary:hover {
  background-color: hsl(44, 100%, 60%);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

/* Blog Home Legacy */
.blog-hero {
  text-align: center;
  padding: 60px 24px;
  background: linear-gradient(135deg, var(--voilure-background) 0%, var(--voilure-surface) 100%);
}

.blog-hero h1 {
  font-size: 3rem;
  font-weight: 700;
  color: var(--voilure-neutral);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.blog-hero p {
  font-size: 1.25rem;
  color: var(--voilure-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Blog List */
.blog-list h1 {
  font-size: 2.5rem;
  margin-bottom: 8px;
  color: var(--voilure-neutral);
}

.blog-intro {
  color: var(--voilure-text-secondary);
  margin-bottom: 48px;
}

/* Posts Grid */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 32px;
  padding: 48px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.post-card {
  background: var(--voilure-surface);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--voilure-border);
  transition: all var(--transition-normal);
}

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

.post-card h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--voilure-neutral);
  margin-bottom: 12px;
  line-height: 1.3;
}

.post-card h2 a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.post-card h2 a:hover {
  color: var(--voilure-primary);
}

.post-card time,
.post-meta {
  font-size: 0.875rem;
  color: var(--voilure-text-secondary);
  margin-bottom: 16px;
  display: block;
}

.post-card p,
.post-excerpt {
  color: var(--voilure-text-primary);
  line-height: 1.7;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  color: var(--voilure-primary);
  font-weight: 500;
  text-decoration: none;
  transition: gap var(--transition-fast);
}

.read-more:hover {
  gap: 12px;
}

/* Blog Post / Article Page */
.blog-post {
  background: var(--voilure-surface);
  border-radius: var(--radius-lg);
  padding: 48px;
  max-width: 1200px;
  margin: 0 auto;
}

.post-header {
  margin-bottom: 32px;
  text-align: center;
}

.post-header h1 {
  font-size: 2.5rem;
  color: var(--voilure-neutral);
  margin-bottom: 0;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.post-featured-image {
  width: 100%;
  margin-bottom: 48px;
}

.post-featured-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
}

.article-header {
  text-align: center;
  padding: 60px 24px 40px;
}

.article-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--voilure-neutral);
  margin-bottom: 16px;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.article-meta {
  font-size: 1rem;
  color: var(--voilure-text-secondary);
}

.article-content,
.post-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

.article-content h2,
.post-content h2 {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--voilure-neutral);
  margin: 48px 0 24px;
}

.article-content h3,
.post-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--voilure-neutral);
  margin: 32px 0 16px;
}

.article-content h4,
.post-content h4 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 24px 0 12px;
}

.article-content p,
.post-content p {
  margin-bottom: 24px;
  line-height: 1.8;
}

.article-content ul,
.article-content ol,
.post-content ul,
.post-content ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

.article-content li,
.post-content li {
  margin-bottom: 8px;
  line-height: 1.7;
}

.article-content blockquote,
.post-content blockquote {
  border-left: 4px solid var(--voilure-primary);
  padding-left: 24px;
  margin: 32px 0;
  font-style: italic;
  color: var(--voilure-text-secondary);
  background: var(--voilure-background);
  padding: 16px 24px;
  border-radius: var(--radius-md);
}

.article-content a,
.post-content a {
  color: var(--voilure-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: opacity var(--transition-fast);
}

.article-content a:hover,
.post-content a:hover {
  opacity: 0.8;
}

.article-content img,
.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: 24px 0;
}

/* Post Footer */
.post-footer {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--voilure-border);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--voilure-primary);
  color: white;
  border-radius: var(--radius-md);
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-normal);
}

.back-link:hover {
  background: hsl(166, 100%, 20%);
  transform: translateY(-1px);
}

/* ========================================
   FOOTER - Identique à Footer.tsx
   ======================================== */
.blog-footer {
  padding: 64px 0;
  background-color: var(--voilure-surface);
  border-top: 1px solid var(--voilure-border);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
}

.footer-brand {
  display: flex;
  align-items: center;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--voilure-primary), hsl(166, 80%, 30%));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 1.125rem;
}

.logo-name {
  font-family: var(--font-primary);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--voilure-neutral);
}

.logo-copyright {
  font-size: 0.875rem;
  color: var(--voilure-text-secondary);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 32px;
}

.footer-link {
  color: var(--voilure-text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.footer-link:hover {
  color: var(--voilure-primary);
}

.footer-bottom {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--voilure-border);
}

.footer-bottom-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  font-size: 0.875rem;
  color: var(--voilure-text-secondary);
}

.footer-badges {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-badges .divider {
  width: 1px;
  height: 16px;
  background-color: var(--voilure-border);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
  .nav-links,
  .nav-actions {
    display: none;
  }
  
  .nav-links.mobile-open,
  .nav-actions.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--voilure-surface);
    padding: 24px;
    box-shadow: var(--shadow-md);
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .blog-main {
    padding-top: 100px;
  }
}

@media (max-width: 768px) {
  .blog-hero h1 {
    font-size: 2rem;
  }
  
  .posts-grid {
    grid-template-columns: 1fr;
    padding: 24px 16px;
  }
  
  .blog-post {
    padding: 24px;
  }
  
  .article-header h1,
  .post-header h1 {
    font-size: 1.75rem;
  }
  
  .article-content,
  .post-content {
    padding: 0 16px 48px;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-bottom-content {
    flex-direction: column;
    text-align: center;
  }
  
  .blog-list h1 {
    font-size: 1.75rem;
  }
  
  .blog-nav {
    flex-direction: row;
  }
}