/* ============================================
   HEADER - CLEAN MODERN NAVIGATION
   Grey + Subtle Sunrise Orange
   ============================================ */

/* Header */
    .header {
      background: var(--white);
      border-bottom: 1px solid var(--grey-200);
      position: sticky;
      top: 0;
      z-index: 1000;
    }

    .header-container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 20px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 48px;
    }

    /* Logo - Simple Text */
    .logo {
      display: flex;
      align-items: baseline;
      gap: 8px;
      text-decoration: none;
      transition: opacity 0.2s ease;
    }

    .logo:hover {
      opacity: 0.8;
    }

    .logo-text {
      font-size: 22px;
      font-weight: 600;
      color: var(--grey-900);
      letter-spacing: -0.02em;
      line-height: 1;
    }

    .logo-tagline {
      font-size: 14px;
      font-weight: 400;
      color: var(--grey-400);
    }

    /* Navigation - Clean Links */
    .nav {
      display: flex;
      align-items: center;
      gap: 32px;
      flex: 1;
    }

    .nav-link {
      color: var(--grey-600);
      text-decoration: none;
      font-size: 15px;
      font-weight: 500;
      padding: 8px 0;
      transition: color 0.2s ease;
      position: relative;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--orange-500);
      transition: width 0.3s ease;
    }

    .nav-link:hover {
      color: var(--grey-900);
    }

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

    /* Highlighted Nav Link - Réalisations Button (Simple & Elegant) */
    .nav-link-btn {
      background: rgba(240, 101, 67, 0.08);
      color: var(--grey-900) !important;
      padding: 8px 16px;
      border-radius: 6px;
      font-weight: 600;
      border: 1px solid rgba(240, 101, 67, 0.2);
      transition: all 0.2s ease;
    }

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

    .nav-link-btn:hover {
      background: rgba(240, 101, 67, 0.12);
      border-color: rgba(240, 101, 67, 0.35);
      color: var(--orange-500) !important;
      transform: translateY(-1px);
    }

    /* Active state for Réalisations page */
    .nav-link-active {
      background: var(--orange-500);
      color: var(--white) !important;
      padding: 8px 16px;
      border-radius: 6px;
      font-weight: 600;
    }

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

    .nav-link-active:hover {
      background: #E55536;
    }

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

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

    .dropdown-icon {
      transition: transform 0.2s ease;
    }

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

    .dropdown-menu {
      position: absolute;
      top: calc(100% + 8px);
      left: 0;
      background: var(--white);
      border-radius: var(--radius-lg);
      box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1), 0 2px 8px rgba(0, 0, 0, 0.05);
      min-width: 280px;
      padding: 8px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(-10px);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      pointer-events: none;
    }

    /* Create invisible bridge between nav-item and dropdown to maintain hover */
    .nav-item::before {
      content: '';
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      height: 12px;
      pointer-events: none;
    }

    .nav-item:hover::before {
      pointer-events: auto;
    }

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

    .dropdown-section {
      padding: 4px 0;
    }

    .dropdown-divider {
      height: 1px;
      background: var(--grey-200);
      margin: 8px 0;
    }

    .dropdown-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding: 12px 14px;
      border-radius: var(--radius-md);
      text-decoration: none;
      transition: background 0.2s ease;
    }

    .dropdown-item:hover {
      background: var(--grey-50);
    }

    .item-icon {
      font-size: 20px;
      flex-shrink: 0;
      margin-top: 2px;
    }

    .item-title {
      font-size: 14px;
      font-weight: 600;
      color: var(--grey-900);
      line-height: 1.4;
    }

    .item-desc {
      font-size: 12px;
      color: var(--grey-600);
      line-height: 1.4;
      margin-top: 2px;
    }

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

    /* Phone Link - Subtle */
    .phone-link {
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--grey-600);
      text-decoration: none;
      font-size: 15px;
      font-weight: 500;
      padding: 10px 16px;
      border-radius: 8px;
      transition: all 0.2s ease;
    }

    .phone-link:hover {
      background: var(--grey-100);
      color: var(--grey-900);
    }

    .phone-icon {
      width: 18px;
      height: 18px;
    }

    /* Primary CTA - Subtle Orange */
    .btn-primary {
      background: var(--orange-500);
      color: var(--white);
      padding: 10px 20px;
      border-radius: 8px;
      font-size: 15px;
      font-weight: 600;
      text-decoration: none;
      border: none;
      cursor: pointer;
      transition: all 0.2s ease;
    }

    .btn-primary:hover {
      background: #E55536;
      transform: translateY(-1px);
    }

    /* Mobile Menu Toggle */
    .mobile-menu-toggle {
      display: none;
      background: transparent;
      border: none;
      cursor: pointer;
      padding: 8px;
      color: var(--grey-900);
      transition: transform 0.3s ease;
    }

    .mobile-menu-toggle:active {
      transform: scale(0.95);
    }

    /* Mobile Menu Panel */
    .mobile-menu {
      display: none;
      position: fixed;
      top: 0;
      right: -100%;
      width: 280px;
      height: 100vh;
      background: var(--white);
      box-shadow: -4px 0 24px rgba(0, 0, 0, 0.1);
      z-index: 2000;
      transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
      overflow-y: auto;
    }

    .mobile-menu.active {
      right: 0;
    }

    .mobile-menu-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 24px;
      border-bottom: 1px solid var(--grey-200);
    }

    .mobile-menu-close {
      background: transparent;
      border: none;
      cursor: pointer;
      padding: 8px;
      color: var(--grey-900);
      transition: transform 0.3s ease;
    }

    .mobile-menu-close:active {
      transform: scale(0.95);
    }

    .mobile-menu-nav {
      display: flex;
      flex-direction: column;
      padding: 24px 0;
    }

    .mobile-menu-nav .nav-link {
      padding: 16px 24px;
      color: var(--grey-900);
      font-size: 16px;
      font-weight: 500;
      border-bottom: 1px solid var(--grey-100);
      transition: background 0.2s ease;
    }

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

    .mobile-menu-nav .nav-link:hover {
      background: var(--grey-50);
    }

    /* Mobile Menu - Highlighted Button (Simple & Elegant) */
    .mobile-menu-nav .nav-link-btn {
      background: rgba(240, 101, 67, 0.08);
      color: var(--grey-900) !important;
      margin: 12px 24px;
      padding: 14px 20px;
      border-radius: 6px;
      font-weight: 600;
      text-align: center;
      border-bottom: none;
      border: 1px solid rgba(240, 101, 67, 0.2);
    }

    .mobile-menu-nav .nav-link-btn:hover {
      background: rgba(240, 101, 67, 0.12);
      border-color: rgba(240, 101, 67, 0.35);
    }

    /* Mobile Menu - Active state */
    .mobile-menu-nav .nav-link-active {
      background: var(--orange-500);
      color: var(--white) !important;
      margin: 12px 24px;
      padding: 14px 20px;
      border-radius: 6px;
      font-weight: 600;
      text-align: center;
      border-bottom: none;
    }

    .mobile-section-title {
      padding: 8px 24px;
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--grey-600);
      margin-top: 8px;
    }

    .mobile-divider {
      height: 1px;
      background: var(--grey-200);
      margin: 16px 24px;
    }

    .nav-link-highlight {
      background: var(--orange-50) !important;
      color: var(--orange-600) !important;
      font-weight: 600;
    }

    .mobile-menu-footer {
      padding: 24px;
      border-top: 1px solid var(--grey-200);
      margin-top: auto;
    }

    .mobile-menu-footer .phone-link {
      width: 100%;
      justify-content: center;
      background: var(--grey-50);
      color: var(--grey-900);
      padding: 14px;
      border-radius: 8px;
    }

    /* Mobile Menu Overlay */
    .mobile-menu-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100vh;
      background: rgba(0, 0, 0, 0.4);
      z-index: 1999;
      opacity: 0;
      visibility: hidden;
      pointer-events: none;
      transition: opacity 0.4s ease, visibility 0.4s ease;
    }

    .mobile-menu-overlay.active {
      opacity: 1;
      visibility: visible;
      pointer-events: auto;
    }

    /* Responsive - Tablet/Medium screens */
    @media (max-width: 1024px) {
      .header-container {
        gap: 24px;
      }

      .nav {
        gap: 20px;
      }

      .nav-link {
        font-size: 14px;
      }

      .phone-link {
        font-size: 14px;
        padding: 8px 12px;
      }

      .btn-primary {
        font-size: 14px;
        padding: 8px 16px;
      }

      .nav-link-btn,
      .nav-link-active {
        font-size: 14px;
        padding: 7px 14px;
      }
    }

    /* Medium-Small screens - Switch to mobile menu */
    @media (max-width: 1150px) {
      .nav {
        display: none;
      }

      .mobile-menu,
      .mobile-menu-overlay {
        display: block;
      }

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

      .header-actions {
        display: none;
      }

      /* Keep tagline visible - enough space on mobile */
    }

    /* Mobile screens - Adjust spacing */
    @media (max-width: 768px) {
      .header-container {
        padding: 18px 20px;
        min-height: 64px;
      }

      .logo {
        align-items: center;
      }
    }

    /* Small mobile - Further adjustments */
    @media (max-width: 480px) {
      .header-container {
        padding: 16px 16px;
        min-height: 60px;
      }

      .logo-text {
        font-size: 20px;
        line-height: 1;
      }
    }

    /* Demo Section */
    .demo-section {
      max-width: 800px;
      margin: 80px auto;
      padding: 0 24px;
      text-align: center;
    }

    .demo-title {
      font-size: 48px;
      font-weight: 600;
      color: var(--grey-900);
      margin-bottom: 16px;
      letter-spacing: -0.02em;
    }

    .demo-subtitle {
      font-size: 18px;
      color: var(--grey-600);
      line-height: 1.6;
      margin-bottom: 48px;
    }

    .color-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
      gap: 24px;
      margin-top: 48px;
      padding: 32px;
      background: var(--white);
      border-radius: 12px;
      border: 1px solid var(--grey-200);
    }

    .color-item {
      text-align: center;
    }

    .color-swatch {
      width: 100%;
      height: 80px;
      border-radius: 8px;
      margin-bottom: 12px;
      border: 1px solid var(--grey-200);
    }

    .color-label {
      font-size: 13px;
      color: var(--grey-600);
      font-weight: 500;
    }

    .color-hex {
      font-size: 11px;
      color: var(--grey-400);
      font-family: monospace;
      margin-top: 4px;
    }

    .design-principle {
      margin-top: 48px;
      padding: 24px;
      background: var(--orange-50);
      border-radius: 12px;
      border-left: 4px solid var(--orange-500);
    }

    .design-principle h3 {
      color: var(--grey-900);
      font-size: 18px;
      margin-bottom: 12px;
    }

    .design-principle ul {
      text-align: left;
      color: var(--grey-600);
      line-height: 1.8;
      list-style-position: inside;
    }