:root {
      --primary-blue: #1e3a8a;
      --secondary-blue: #3b82f6;
      --accent-orange: #ea580c;
      --light-orange: #fed7aa;
      --dark-blue: #0f172a;
      --white: #ffffff;
      --light-gray: #f8fafc;
      --medium-gray: #64748b;
      --dark-gray: #1e293b;
      --gradient-primary: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
      --gradient-accent: linear-gradient(135deg, #ea580c 0%, #f97316 100%);
      --gradient-overlay: linear-gradient(135deg, rgba(30, 58, 138, 0.9) 0%, rgba(59, 130, 246, 0.8) 100%);
      --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
      --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
      --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
      --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    }

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

    body {
      font-family: 'Inter', sans-serif;
      line-height: 1.6;
      color: var(--dark-gray);
      background-color: var(--white);
      overflow-x: hidden;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* Header moderne - IDENTIQUE À ABOUT.PHP */
    .header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(30, 58, 138, 0.1);
      z-index: 1000;
      transition: all 0.3s ease;
      padding: 12px 0;
    }

    .header.scrolled {
      background: rgba(255, 255, 255, 0.98);
      box-shadow: var(--shadow-lg);
      padding: 8px 0;
    }

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

    .logo {
      display: flex;
      align-items: center;
      text-decoration: none;
      font-weight: 800;
      font-size: 24px;
      color: var(--primary-blue);
      transition: all 0.3s ease;
      z-index: 1001;
      order: 2;
    }

    .logo:hover {
      transform: scale(1.05);
      color: var(--accent-orange);
    }

    .nav {
      display: flex;
      align-items: center;
      gap: 20px;
      order: 3;
    }

    /* Menu hamburger */
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.8rem;
      color: var(--primary-blue);
      cursor: pointer;
      padding: 8px;
      border-radius: 8px;
      transition: all 0.3s ease;
      z-index: 1002;
      position: relative;
      width: 44px;
      height: 44px;
      justify-content: center;
      align-items: center;
      order: 1;
    }

    .mobile-menu-toggle:hover {
      background: rgba(30, 58, 138, 0.1);
    }

    .mobile-menu-toggle.active {
      color: var(--accent-orange);
    }

    /* Navigation principale */
    .nav-menu {
      display: flex;
      list-style: none;
      gap: 25px;
      align-items: center;
      margin: 0;
      padding: 0;
    }

    .nav-menu li {
      position: relative;
    }

    .dropdown {
      position: relative;
    }

    .dropdown-menu {
      position: absolute;
      top: 100%;
      left: 0;
      background: var(--white);
      min-width: 220px;
      list-style: none;
      padding: 8px 0;
      margin: 0;
      border-radius: 12px;
      box-shadow: var(--shadow-xl);
      opacity: 0;
      visibility: hidden;
      transform: translateY(-10px);
      transition: all 0.3s ease;
      z-index: 1000;
      border: 1px solid rgba(30, 58, 138, 0.1);
    }

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

    .dropdown-menu li {
      padding: 0;
    }

    .dropdown-menu a {
      display: block;
      padding: 10px 16px;
      color: var(--dark-gray);
      text-decoration: none;
      transition: all 0.3s ease;
      border-radius: 8px;
      margin: 0 6px;
      font-size: 0.9rem;
    }

    .dropdown-menu a:hover {
      background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
      color: var(--white);
      transform: translateX(5px);
    }

    .nav-link {
      text-decoration: none;
      color: var(--dark-gray);
      font-weight: 500;
      position: relative;
      transition: all 0.3s ease;
      padding: 8px 0;
      display: flex;
      align-items: center;
      gap: 5px;
      font-size: 0.95rem;
    }

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

    .nav-link.active {
      color: var(--accent-orange);
    }

    .nav-link::after {
      content: '';
      position: absolute;
      width: 0;
      height: 2px;
      bottom: 0;
      left: 0;
      background: var(--gradient-accent);
      transition: width 0.3s ease;
    }

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

    .lang-selector {
      display: flex;
      background: rgba(30, 58, 138, 0.1);
      border-radius: 25px;
      padding: 3px;
      margin-right: 15px;
    }

    .lang-btn {
      background: transparent;
      border: none;
      padding: 6px 12px;
      border-radius: 20px;
      font-weight: 600;
      font-size: 0.85rem;
      color: var(--primary-blue);
      cursor: pointer;
      transition: all 0.3s ease;
      text-decoration: none;
      display: flex;
      align-items: center;
      gap: 4px;
    }

    .lang-btn.active {
      background: var(--gradient-primary);
      color: var(--white);
      box-shadow: var(--shadow-sm);
    }

    .lang-btn:hover:not(.active) {
      background: rgba(30, 58, 138, 0.1);
    }

    .cta-button {
      background: var(--gradient-accent);
      color: var(--white);
      padding: 10px 20px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: 600;
      font-size: 0.9rem;
      transition: all 0.3s ease;
      box-shadow: var(--shadow-md);
      white-space: nowrap;
    }

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

    /* Overlay mobile */
    .mobile-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.5);
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s ease;
      z-index: 998;
    }

    .mobile-overlay.active {
      opacity: 1;
      visibility: visible;
    }

    /* Éléments desktop/mobile */
    .mobile-only {
      display: none;
    }

    .desktop-only {
      display: flex;
    }

    /* Page Title Section */
    .page-title {
      background: var(--gradient-primary);
      padding: 120px 0 60px;
      position: relative;
      overflow: hidden;
    }

    .page-title::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="a" cx="50%" cy="50%"><stop offset="0%" stop-color="%23ffffff" stop-opacity="0.1"/><stop offset="100%" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><circle cx="200" cy="200" r="100" fill="url(%23a)"/><circle cx="800" cy="300" r="150" fill="url(%23a)"/><circle cx="400" cy="700" r="120" fill="url(%23a)"/></svg>');
      opacity: 0.3;
    }

    .page-title-content {
      position: relative;
      z-index: 2;
      text-align: center;
    }

    .page-title h1 {
      font-size: 3rem;
      font-weight: 800;
      color: var(--white);
      margin-bottom: 20px;
      animation: fadeInUp 1s ease;
    }

    .breadcrumbs {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      color: rgba(255, 255, 255, 0.8);
      font-size: 0.95rem;
      animation: fadeInUp 1s ease 0.2s both;
    }

    .breadcrumbs a {
      color: rgba(255, 255, 255, 0.8);
      text-decoration: none;
      transition: color 0.3s ease;
    }

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

    .breadcrumbs .current {
      color: var(--accent-orange);
      font-weight: 600;
    }

    /* About Section */
    .about-section {
      padding: 80px 0;
      background: var(--white);
    }

    .about-content {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }

    .about-image img,
    .placeholder-image {
      width: 100%;
      border-radius: 20px;
      box-shadow: var(--shadow-xl);
      transition: transform 0.3s ease;
    }

    .about-image img:hover {
      transform: scale(1.02);
    }

    .placeholder-image {
      height: 400px;
      background: var(--light-gray);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--medium-gray);
    }

    .about-text p {
      color: var(--medium-gray);
      font-size: 1.1rem;
      line-height: 1.8;
      margin-bottom: 25px;
    }

    /* Features Section */
    .features-section {
      padding: 80px 0;
      background: var(--light-gray);
    }

    .section-header {
      text-align: center;
      margin-bottom: 60px;
    }

    .section-title {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--dark-blue);
      margin-bottom: 16px;
      line-height: 1.2;
    }

    .section-subtitle {
      font-size: 1.2rem;
      color: var(--medium-gray);
      max-width: 600px;
      margin: 0 auto;
    }

    .features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
      gap: 40px;
    }

    .feature-card {
      background: var(--white);
      padding: 40px 30px;
      border-radius: 20px;
      text-align: center;
      box-shadow: var(--shadow-md);
      transition: all 0.3s ease;
      border: 1px solid rgba(30, 58, 138, 0.1);
    }

    .feature-card:hover {
      transform: translateY(-10px);
      box-shadow: var(--shadow-xl);
    }

    .feature-icon {
      width: 80px;
      height: 80px;
      background: var(--gradient-accent);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 24px;
      font-size: 2rem;
      color: var(--white);
    }

    .feature-card h3 {
      font-size: 1.4rem;
      font-weight: 700;
      color: var(--dark-blue);
      margin-bottom: 16px;
    }

    .feature-card p {
      color: var(--medium-gray);
      font-size: 1rem;
      line-height: 1.6;
    }

    /* Stats Section */
    .stats-section {
      padding: 80px 0;
      background: var(--gradient-primary);
      color: var(--white);
      position: relative;
      overflow: hidden;
    }

    .stats-section::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="a" cx="50%" cy="50%"><stop offset="0%" stop-color="%23ffffff" stop-opacity="0.1"/><stop offset="100%" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><circle cx="200" cy="200" r="100" fill="url(%23a)"/><circle cx="800" cy="300" r="150" fill="url(%23a)"/><circle cx="400" cy="700" r="120" fill="url(%23a)"/></svg>');
      opacity: 0.3;
    }

    .stats-section .container {
      position: relative;
      z-index: 2;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .stat-card {
      background: rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(20px);
      padding: 40px 30px;
      border-radius: 20px;
      text-align: center;
      border: 1px solid rgba(255, 255, 255, 0.2);
      transition: all 0.3s ease;
    }

    .stat-card:hover {
      transform: translateY(-5px);
      background: rgba(255, 255, 255, 0.15);
    }

    .stat-number {
      display: block;
      font-size: 3rem;
      font-weight: 800;
      color: var(--accent-orange);
      line-height: 1;
      margin-bottom: 15px;
    }

    .stat-label {
      font-size: 1.1rem;
      font-weight: 600;
      color: var(--white);
      margin-bottom: 8px;
    }

    .stat-description {
      font-size: 0.9rem;
      color: rgba(255, 255, 255, 0.8);
    }

    /* Footer */
    .footer {
      background: var(--dark-blue);
      color: var(--white);
      padding: 60px 0 20px;
    }

    .footer-content {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 60px;
      margin-bottom: 40px;
    }

    .footer-about h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 20px;
      color: var(--accent-orange);
    }

    .footer-about p {
      color: rgba(255, 255, 255, 0.8);
      line-height: 1.6;
      margin-bottom: 30px;
    }

    .social-links {
      display: flex;
      gap: 15px;
    }

    .social-link {
      width: 45px;
      height: 45px;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--white);
      font-size: 1.2rem;
      transition: all 0.3s ease;
      text-decoration: none;
    }

    .social-link:hover {
      background: var(--accent-orange);
      transform: translateY(-2px);
    }

    .footer-contact h4 {
      color: var(--white);
      margin-bottom: 24px;
      font-size: 1.3rem;
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 15px;
      margin-bottom: 16px;
      color: rgba(255, 255, 255, 0.8);
    }

    .contact-icon {
      width: 40px;
      height: 40px;
      background: var(--accent-orange);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--white);
      flex-shrink: 0;
    }

    .footer-bottom {
      text-align: center;
      padding-top: 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      color: rgba(255, 255, 255, 0.6);
    }

    /* Animations */
    @keyframes fadeInUp {
      from {
        opacity: 0;
        transform: translateY(30px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .floating {
      animation: floating 3s ease-in-out infinite;
    }

    @keyframes floating {
      0%, 100% {
        transform: translateY(0px);
      }
      50% {
        transform: translateY(-10px);
      }
    }

    /* Responsive Design */
    @media (max-width: 1024px) {
      .container {
        padding: 0 15px;
      }
      
      .nav {
        gap: 15px;
      }
      
      .nav-menu {
        gap: 20px;
      }
      
      .about-content {
        gap: 40px;
      }
      
      .page-title h1 {
        font-size: 2.5rem;
      }
      
      .section-title {
        font-size: 2.2rem;
      }
    }

    @media (max-width: 768px) {
      .header-content {
        display: flex;
        align-items: center;
        justify-content: space-between;
      }
      
      .mobile-menu-toggle {
        display: flex;
        order: 1;
      }
      
      .logo {
        order: 2;
        flex: 1;
        justify-content: center;
      }
      
      .nav {
        order: 3;
      }

      /* Menu mobile */
      .nav-menu {
        position: fixed;
        top: 0;
        left: -100%;
        width: 100%;
        max-width: 320px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        justify-content: flex-start;
        align-items: stretch;
        gap: 0;
        padding: 100px 30px 30px;
        box-shadow: var(--shadow-xl);
        transition: left 0.3s ease;
        overflow-y: auto;
        z-index: 999;
      }

      .nav-menu.active {
        left: 0;
      }

      .nav-menu > li {
        width: 100%;
        border-bottom: 1px solid rgba(30, 58, 138, 0.1);
        margin: 0;
      }
      
      .nav-menu > li:last-child {
        border-bottom: none;
      }

      .nav-link {
        padding: 18px 0;
        width: 100%;
        font-size: 1.1rem;
        justify-content: space-between;
        border-radius: 0;
      }

      .nav-link::after {
        display: none;
      }

      /* Dropdown mobile */
      .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background: rgba(30, 58, 138, 0.05);
        border-radius: 8px;
        margin-top: 10px;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
        padding: 0;
      }

      .dropdown.active .dropdown-menu {
        max-height: 300px;
        padding: 8px 0;
      }

      .dropdown-menu a {
        padding: 12px 20px;
        margin: 0;
        border-radius: 0;
        font-size: 1rem;
        transform: none;
      }

      .dropdown-menu a:hover {
        background: rgba(30, 58, 138, 0.1);
        color: var(--primary-blue);
        transform: none;
      }

      /* Éléments mobile */
      .mobile-only {
        display: block;
        width: 100%;
      }

      .desktop-only {
        display: none;
      }

      .lang-selector {
        margin: 25px 0;
        width: 100%;
        justify-content: center;
        padding: 4px;
      }

      .lang-btn {
        padding: 12px 20px;
        font-size: 1rem;
        flex: 1;
        justify-content: center;
      }

      .cta-button {
        margin-top: 20px;
        width: 100%;
        text-align: center;
        padding: 15px 20px;
        font-size: 1rem;
      }

      /* Page mobile */
      .page-title {
        padding: 100px 0 40px;
      }

      .page-title h1 {
        font-size: 2.2rem;
      }

      /* About mobile */
      .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
      }

      /* Sections mobile */
      .about-section,
      .features-section,
      .stats-section {
        padding: 60px 0;
      }

      .section-title {
        font-size: 2rem;
      }

      .section-subtitle {
        font-size: 1.1rem;
      }

      /* Grids mobile */
      .features-grid,
      .stats-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }

      /* Footer mobile */
      .footer {
        padding: 50px 0 20px;
      }

      .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
      }
    }

    @media (max-width: 480px) {
      .container {
        padding: 0 15px;
      }

      .header-content {
        padding: 0 5px;
      }

      .logo {
        font-size: 20px;
      }

      .nav-menu {
        max-width: 280px;
        padding: 80px 20px 30px;
      }

      .mobile-menu-toggle {
        font-size: 1.6rem;
        width: 40px;
        height: 40px;
      }

      .page-title h1 {
        font-size: 1.8rem;
      }

      .section-title {
        font-size: 1.8rem;
      }

      .feature-card,
      .stat-card {
        padding: 30px 20px;
      }

      .footer-content {
        gap: 30px;
      }
    }

    /* Micro-interactions et performance */
    .feature-card,
    .stat-card {
      will-change: transform;
    }

    @media (prefers-reduced-motion: reduce) {
      * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
      }
    }