/*
 * ALTER PARIS - Styles CSS Principaux
 * Thème: Slate & Red - Professionnel et Moderne
 * Mode Clair: Primary(#2b2d42), Secondary(#8d99ae), Accent(#edf2f4), Neutral(#ef233c), BG(#ffffff), Text(#1a1a1a)
 * Mode Sombre: Primary(#edf2f4), Secondary(#8d99ae), Accent(#2b2d42), Neutral(#ef233c), BG(#1a1a1a), Text(#edf2f4)
 * Conception: Design Français Moderne avec Material Design 3
 * Dernière mise à jour: 2025
 */

/* ============================================
   1. VARIABLES CSS & THÈME DE COULEURS
   ============================================ */

:root {
  /* Palette de couleurs - Mode Clair */
  --primary-color: #2b2d42;
  --primary-light: #3d4066;
  --primary-dark: #1a1c2e;

  --secondary-color: #8d99ae;
  --secondary-light: #a8b5c7;
  --secondary-dark: #6b7a91;

  --accent-color: #edf2f4;
  --accent-light: #ffffff;
  --accent-dark: #d0d8dd;

  --neutral-color: #ef233c;
  --neutral-light: #ff5c75;
  --neutral-dark: #c90a1f;

  --background-primary: #ffffff;
  --background-secondary: #f8f9fa;
  --background-tertiary: #edf2f4;

  --text-primary: #1a1a1a;
  --text-secondary: #2b2d42;
  --text-tertiary: #8d99ae;
  --text-on-primary: #ffffff;
  --text-on-neutral: #ffffff;

  /* Bordures et Ombres */
  --border-color: #d0d8dd;
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 16px;
  --border-radius-pill: 50px;
  --border-radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.2);

  /* Effet de verre (Glassmorphism) */
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(255, 255, 255, 0.3);
  --glass-blur: 12px;

  /* Espacement */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Typography */
  --font-primary: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-secondary: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;

  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  /* Z-index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
}

/* Mode Sombre */
[data-theme="dark"] {
  --primary-color: #edf2f4;
  --primary-light: #ffffff;
  --primary-dark: #d0d8dd;

  --secondary-color: #8d99ae;
  --secondary-light: #a8b5c7;
  --secondary-dark: #6b7a91;

  --accent-color: #2b2d42;
  --accent-light: #3d4066;
  --accent-dark: #1a1c2e;

  --neutral-color: #ef233c;
  --neutral-light: #ff5c75;
  --neutral-dark: #c90a1f;

  --background-primary: #1a1a1a;
  --background-secondary: #2b2d42;
  --background-tertiary: #3d4066;

  --text-primary: #edf2f4;
  --text-secondary: #d0d8dd;
  --text-tertiary: #8d99ae;
  --text-on-primary: #1a1a1a;
  --text-on-neutral: #ffffff;

  --border-color: #3d4066;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.6);

  --glass-bg: rgba(26, 26, 26, 0.85);
  --glass-border: rgba(255, 255, 255, 0.1);
}

/* ============================================
   2. RESET & BASE STYLES
   ============================================ */

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-secondary);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--background-primary);
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* ============================================
   3. TYPOGRAPHIE
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: var(--font-semibold);
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--text-5xl); font-weight: var(--font-bold); }
h2 { font-size: var(--text-4xl); font-weight: var(--font-bold); }
h3 { font-size: var(--text-3xl); font-weight: var(--font-semibold); }
h4 { font-size: var(--text-2xl); font-weight: var(--font-semibold); }
h5 { font-size: var(--text-xl); font-weight: var(--font-medium); }
h6 { font-size: var(--text-lg); font-weight: var(--font-medium); }

@media (max-width: 768px) {
  h1 { font-size: var(--text-4xl); }
  h2 { font-size: var(--text-3xl); }
  h3 { font-size: var(--text-2xl); }
  h4 { font-size: var(--text-xl); }
  h5 { font-size: var(--text-lg); }
  h6 { font-size: var(--text-base); }
}

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

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* ============================================
   4. HEADER & NAVIGATION
   ============================================ */

.header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.header-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.header-logo img {
  width: 232px;
  height: 70px;
  object-fit: contain;
}

.logo-placeholder {
  font-family: var(--font-primary);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--primary-color);
  letter-spacing: -0.02em;
}

.header-navigation {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-xs);
  align-items: center;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-primary);
  border-radius: var(--border-radius-pill);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--neutral-color);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: -1;
}

.nav-link:hover {
  color: var(--text-on-neutral);
}

.nav-link:hover::before {
  opacity: 1;
}

.nav-link:focus-visible {
  outline: 2px solid var(--neutral-color);
  outline-offset: 2px;
}

.nav-link.active {
  color: var(--neutral-color);
  font-weight: var(--font-semibold);
}

.nav-icon {
  font-size: var(--text-lg);
}

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

/* Search Bar */
.search-container {
  position: relative;
  display: flex;
  align-items: center;
}

.search-input {
  width: 50px;
  padding: var(--spacing-sm) var(--spacing-md);
  padding-right: var(--spacing-2xl);
  font-family: var(--font-secondary);
  font-size: var(--text-sm);
  color: var(--text-primary);
  background: var(--background-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-pill);
  transition: all var(--transition-base);
}

.search-input::placeholder {
  color: var(--text-tertiary);
}

.search-input:focus {
  width: 250px;
  outline: none;
  border-color: var(--neutral-color);
  box-shadow: 0 0 0 3px rgba(239, 35, 60, 0.1);
}

.search-button {
  position: absolute;
  right: var(--spacing-sm);
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-full);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.search-button:hover {
  color: var(--neutral-color);
  background: var(--background-secondary);
}

/* Theme Toggle */
.theme-toggle {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--background-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  color: var(--text-primary);
}

.theme-toggle:hover {
  background: var(--primary-color);
  color: var(--text-on-primary);
  border-color: var(--primary-color);
  transform: scale(1.05);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--neutral-color);
  outline-offset: 2px;
}

/* CTA Button */
.cta-button {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-xl);
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-on-primary);
  background: linear-gradient(135deg, var(--neutral-color) 0%, var(--neutral-dark) 100%);
  border: none;
  border-radius: var(--border-radius-pill);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.cta-button::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--neutral-light) 0%, var(--neutral-color) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.cta-button:hover::before {
  opacity: 1;
}

.cta-button span {
  position: relative;
  z-index: 1;
}

.cta-button:focus-visible {
  outline: 2px solid var(--neutral-color);
  outline-offset: 2px;
}

/* Mobile Menu Button */
.mobile-menu-button {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
}

.mobile-menu-button span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.mobile-menu-button:hover {
  background: var(--background-secondary);
}

.mobile-menu-button.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-button.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-button.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation */
@media (max-width: 1024px) {
  .header-navigation {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background: var(--background-primary);
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--spacing-4xl) var(--spacing-xl);
    box-shadow: var(--shadow-xl);
    transition: right var(--transition-base);
    z-index: var(--z-modal);
  }

  .header-navigation.active {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
    width: 100%;
  }

  .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-md);
  }

  .search-container {
    width: 100%;
    margin-top: var(--spacing-lg);
  }

  .search-input:focus {
    width: 100%;
  }

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

  .header-actions .cta-button {
    display: none;
  }
}

@media (max-width: 768px) {
  .header-container {
    padding: var(--spacing-md);
  }

  .header-logo img {
    width: 180px;
    height: 54px;
  }

  .search-input {
    display: none;
  }
}

/* ============================================
   5. HERO SECTION
   ============================================ */

.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: blur(3px);
  transform: scale(1.05);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(43, 45, 66, 0.85) 0%, rgba(43, 45, 66, 0.7) 50%, rgba(239, 35, 60, 0.6) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1000px;
  padding: var(--spacing-4xl) var(--spacing-lg);
  text-align: center;
  color: var(--text-on-primary);
}

.hero-title {
  font-size: var(--text-6xl);
  font-weight: var(--font-extrabold);
  margin-bottom: var(--spacing-lg);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: var(--text-xl);
  font-weight: var(--font-normal);
  margin-bottom: var(--spacing-2xl);
  opacity: 0.95;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
}

.hero-button {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-2xl);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  border-radius: var(--border-radius-pill);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.hero-button-primary {
  color: var(--text-on-neutral);
  background: var(--neutral-color);
  border: 2px solid var(--neutral-color);
  box-shadow: var(--shadow-lg);
}

.hero-button-primary:hover {
  background: var(--neutral-dark);
  border-color: var(--neutral-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  color: var(--text-on-neutral);
}

.hero-button-secondary {
  color: var(--text-on-primary);
  background: transparent;
  border: 2px solid var(--text-on-primary);
  backdrop-filter: blur(10px);
}

.hero-button-secondary:hover {
  background: var(--text-on-primary);
  color: var(--primary-color);
}

@media (max-width: 768px) {
  .hero-title {
    font-size: var(--text-4xl);
  }

  .hero-subtitle {
    font-size: var(--text-lg);
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

  .hero-button {
    width: 100%;
    justify-content: center;
  }
}

/* ============================================
   6. SECTIONS GÉNÉRIQUES
   ============================================ */

.section {
  padding: var(--spacing-4xl) 0;
  position: relative;
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-tertiary);
  max-width: 700px;
  margin: 0 auto;
}

/* Section avec fond d'image */
.section-with-bg {
  position: relative;
  overflow: hidden;
}

.section-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: blur(3px);
  z-index: 0;
}

.section-bg-overlay {
  position: absolute;
  inset: 0;
  background: rgba(43, 45, 66, 0.85);
  z-index: 1;
}

.section-with-bg .section-container {
  position: relative;
  z-index: 2;
  color: var(--text-on-primary);
}

/* ============================================
   7. CARTES & GRILLES
   ============================================ */

.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--background-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

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

.card-icon {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--neutral-color) 0%, var(--neutral-dark) 100%);
  border-radius: var(--border-radius-md);
  margin-bottom: var(--spacing-lg);
  color: var(--text-on-neutral);
  font-size: var(--text-2xl);
}

.card-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.card-description {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--neutral-color);
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
  transition: gap var(--transition-fast);
}

.card-link:hover {
  gap: var(--spacing-sm);
}

.card-link span.material-symbols-rounded {
  font-size: var(--text-lg);
}

/* ============================================
   8. BOUTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  border: none;
}

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

.btn-primary {
  color: var(--text-on-primary);
  background: var(--primary-color);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: var(--primary-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
  color: var(--text-on-primary);
}

.btn-neutral {
  color: var(--text-on-neutral);
  background: var(--neutral-color);
  box-shadow: var(--shadow-md);
}

.btn-neutral:hover {
  background: var(--neutral-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
  color: var(--text-on-neutral);
}

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

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

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

.btn-ghost:hover {
  background: var(--background-secondary);
}

.btn-sm {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--text-sm);
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--text-lg);
}

/* ============================================
   9. FORMULAIRES
   ============================================ */

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

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-md);
  font-family: var(--font-secondary);
  font-size: var(--text-base);
  color: var(--text-primary);
  background: var(--background-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-base);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-tertiary);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--neutral-color);
  box-shadow: 0 0 0 3px rgba(239, 35, 60, 0.1);
}

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

.form-checkbox,
.form-radio {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
}

.form-checkbox input,
.form-radio input {
  width: 20px;
  height: 20px;
  accent-color: var(--neutral-color);
}

.form-error {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: var(--text-sm);
  color: var(--neutral-color);
}

.form-success {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: var(--text-sm);
  color: #2ecc71;
}

/* ============================================
   10. FOOTER
   ============================================ */

.footer {
  background: var(--primary-color);
  color: var(--text-on-primary);
  padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-branding {
  max-width: 350px;
}

.footer-logo {
  margin-bottom: var(--spacing-md);
}

.footer-logo img {
  width: 180px;
  height: auto;
}

.footer-description {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
}

.footer-social {
  display: flex;
  gap: var(--spacing-sm);
}

.footer-social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-full);
  color: var(--text-on-primary);
  transition: all var(--transition-base);
}

.footer-social-link:hover {
  background: var(--neutral-color);
  transform: translateY(-2px);
  color: var(--text-on-neutral);
}

.footer-title {
  font-family: var(--font-primary);
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  margin-bottom: var(--spacing-lg);
  color: var(--text-on-primary);
}

.footer-links {
  list-style: none;
}

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

.footer-link {
  color: rgba(255, 255, 255, 0.8);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.footer-link:hover {
  color: var(--text-on-primary);
  transform: translateX(4px);
}

.footer-link span.material-symbols-rounded {
  font-size: var(--text-lg);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  color: rgba(255, 255, 255, 0.8);
}

.footer-contact-item span.material-symbols-rounded {
  font-size: var(--text-lg);
  flex-shrink: 0;
  margin-top: 2px;
}

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

.footer-bottom-links {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.footer-bottom-link {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

.footer-bottom-link:hover {
  color: var(--text-on-primary);
}

.footer-copyright {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--text-sm);
}

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ============================================
   11. ACCESSIBILITÉ
   ============================================ */

/* Focus visible pour navigation au clavier */
:focus-visible {
  outline: 2px solid var(--neutral-color);
  outline-offset: 2px;
}

/* Skip link pour accessibilité */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--neutral-color);
  color: var(--text-on-neutral);
  padding: var(--spacing-md) var(--spacing-lg);
  text-decoration: none;
  font-weight: var(--font-semibold);
  z-index: var(--z-tooltip);
  transition: top var(--transition-base);
}

.skip-link:focus {
  top: 0;
}

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================
   12. UTILITAIRES
   ============================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

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

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }
.mt-5 { margin-top: var(--spacing-2xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }
.mb-5 { margin-bottom: var(--spacing-2xl); }

.py-0 { padding-top: 0; padding-bottom: 0; }
.py-1 { padding-top: var(--spacing-sm); padding-bottom: var(--spacing-sm); }
.py-2 { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.py-3 { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-lg); }
.py-4 { padding-top: var(--spacing-xl); padding-bottom: var(--spacing-xl); }
.py-5 { padding-top: var(--spacing-2xl); padding-bottom: var(--spacing-2xl); }

/* Animation fade in */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* ============================================
   13. RESPONSIVE
   ============================================ */

@media (max-width: 1200px) {
  .section-container {
    padding: 0 var(--spacing-xl);
  }
}

@media (max-width: 768px) {
  .section {
    padding: var(--spacing-3xl) 0;
  }

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

  .hero-content {
    padding: var(--spacing-2xl) var(--spacing-md);
  }
}

/* ============================================
   14. IMPRESSION
   ============================================ */

@media print {
  .header,
  .footer,
  .theme-toggle,
  .mobile-menu-button {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .section {
    page-break-inside: avoid;
  }
}