.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-h);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all var(--transition);
  }

  .nav.scrolled {
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  }

  .nav-inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-4);
  }

  /* Logo */
  .nav-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    transition: opacity var(--transition);
  }

  .nav-logo:hover {
    opacity: 0.8;
  }

  .nav-logo img {
    height: 36px;
    width: auto;
  }

  /* Desktop Navigation */
  .nav-links {
    display: none;
    align-items: center;
    gap: var(--sp-8);
  }

  .nav-link {
    font-size: 14.5px;
    font-weight: 500;
    color: var(--ink-light);
    padding: var(--sp-2) 0;
    position: relative;
    transition: color var(--transition);
    letter-spacing: -0.01em;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    gap: 5px;
  }

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

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

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

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

  .nav-dropdown-trigger {
    font-size: 14.5px;
    font-weight: 500;
    color: var(--ink-light);
    padding: var(--sp-2) 0;
    position: relative;
    transition: color var(--transition);
    letter-spacing: -0.01em;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  .nav-dropdown-trigger:hover,
  .nav-dropdown.active .nav-dropdown-trigger {
    color: var(--ink);
  }

  .nav-dropdown-trigger::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition);
    border-radius: 2px;
  }

  .nav-dropdown.active .nav-dropdown-trigger::after {
    width: 100%;
  }

  .nav-dropdown-trigger svg {
    width: 12px;
    height: 12px;
    transition: transform var(--transition);
    stroke-width: 2.5;
  }

  .nav-dropdown.active .nav-dropdown-trigger svg {
    transform: rotate(180deg);
  }

  .nav-dropdown-panel {
    position: absolute;
    top: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    min-width: 220px;
    background: white;
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--r-lg);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
    padding: var(--sp-2);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    z-index: 100;
  }

  .nav-dropdown.active .nav-dropdown-panel {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
  }

  .nav-dropdown-panel a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: var(--r);
    font-size: 14px;
    font-weight: 500;
    color: var(--ink-light);
    text-decoration: none;
    transition: all var(--transition);
  }

  .nav-dropdown-panel a:hover {
    background: var(--primary-50);
    color: var(--primary);
  }

  .nav-dropdown-panel a.active {
    background: var(--primary-50);
    color: var(--primary);
  }

  .nav-dropdown-panel .nav-dropdown-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--r);
    background: var(--primary-50);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
  }

  .nav-dropdown-panel .nav-dropdown-icon svg {
    width: 16px;
    height: 16px;
  }

  .nav-dropdown-panel .nav-dropdown-info {
    display: flex;
    flex-direction: column;
    gap: 1px;
    flex: 1;
  }

  .nav-dropdown-panel .nav-dropdown-info span:first-child {
    font-size: 14px;
    font-weight: 600;
    color: var(--ink);
  }

  .nav-dropdown-panel .nav-dropdown-info span:last-child {
    font-size: 12px;
    color: var(--ink-muted);
    font-weight: 400;
  }

  .nav-dropdown-divider {
    height: 1px;
    background: rgba(0, 0, 0, 0.06);
    margin: var(--sp-1) 0;
  }

  .nav-dropdown-panel .nav-dropdown-all {
    font-weight: 600;
    color: var(--primary);
  }

  /* Actions */
  .nav-actions {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
  }

  .nav-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--r-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ink-light);
    transition: all var(--transition);
    position: relative;
    background: transparent;
    border: none;
    cursor: pointer;
  }

  .nav-btn:hover {
    background: var(--surface-alt);
    color: var(--ink);
  }

  .nav-btn svg {
    width: 20px;
    height: 20px;
  }

  .nav-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background: var(--secondary);
    color: white;
    font-size: 10px;
    font-weight: 700;
    min-width: 18px;
    height: 18px;
    border-radius: var(--r-full);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 5px;
    border: 2px solid white;
  }

  /* Burger */
  .nav-burger {
    width: 40px;
    height: 40px;
    border-radius: var(--r);
    background: var(--ink);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    border: none;
    cursor: pointer;
  }

  .nav-burger:hover {
    background: var(--ink-light);
    transform: scale(1.02);
  }

  .nav-burger svg {
    width: 18px;
    height: 18px;
  }

  /* Mobile Bottom Nav - Épuré */
  .nav-bottom {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: var(--sp-2) 0 calc(var(--sp-2) + env(safe-area-inset-bottom));
    z-index: 999;
    box-shadow: 0 -2px 20px rgba(0, 0, 0, 0.04);
  }

  .nav-tab {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: var(--sp-2);
    color: var(--ink-muted);
    font-size: 11px;
    font-weight: 500;
    transition: all var(--transition);
    background: none;
    border: none;
    cursor: pointer;
    text-decoration: none;
  }

  .nav-tab.active {
    color: var(--primary);
  }

  .nav-tab svg {
    width: 22px;
    height: 22px;
    stroke-width: 1.8;
  }

  /* Bouton central SANS dégradé - Couleur unie */
  .nav-tab-center {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-top: -18px;
  }

  .nav-tab-center-btn {
    width: 56px;
    height: 56px;
    background: var(--primary);
    border-radius: var(--r-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(25, 118, 210, 0.35);
    transition: all var(--transition);
    border: 3px solid white;
  }

  .nav-tab-center-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(25, 118, 210, 0.4);
  }

  .nav-tab-center-btn:active {
    transform: scale(0.96);
  }

  .nav-tab-center-btn svg {
    width: 24px;
    height: 24px;
    color: white;
    stroke-width: 2;
  }

  /* Drawer */
  .nav-drawer {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(85vw, 340px);
    height: 100vh;
    background: white;
    z-index: 1100;
    transition: right var(--transition-slow);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
  }

  .nav-drawer.open {
    right: 0;
  }

  .nav-drawer-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    z-index: 1099;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
  }

  .nav-drawer-overlay.open {
    opacity: 1;
    visibility: visible;
  }

  .nav-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--sp-5) var(--sp-4);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  }

  .nav-drawer-header img {
    height: 36px;
    width: auto;
  }

  .nav-drawer-close {
    width: 40px;
    height: 40px;
    border-radius: var(--r-full);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-alt);
    color: var(--ink);
    transition: all var(--transition);
    border: none;
    cursor: pointer;
  }

  .nav-drawer-close:hover {
    background: var(--line);
  }

  .nav-drawer-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--sp-4);
  }

  .nav-drawer-link {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    padding: var(--sp-3) var(--sp-4);
    border-radius: var(--r-lg);
    color: var(--ink-light);
    font-weight: 500;
    font-size: 15px;
    margin-bottom: var(--sp-1);
    transition: all var(--transition);
    text-decoration: none;
  }

  .nav-drawer-link:hover,
  .nav-drawer-link.active {
    background: var(--primary-50);
    color: var(--primary);
  }

  .nav-drawer-link svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
  }

  /* Sous-menu "Résidences" dans le drawer */
  .nav-drawer-submenu {
    border-radius: var(--r-lg);
    margin-bottom: var(--sp-1);
    overflow: hidden;
  }

  .nav-drawer-submenu-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--sp-3) var(--sp-4);
    border-radius: var(--r-lg);
    color: var(--ink-light);
    font-weight: 500;
    font-size: 15px;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    transition: all var(--transition);
  }

  .nav-drawer-submenu-trigger:hover {
    background: var(--primary-50);
    color: var(--primary);
  }

  .nav-drawer-submenu.active .nav-drawer-submenu-trigger {
    background: var(--primary-50);
    color: var(--primary);
  }

  .nav-drawer-submenu-trigger .trigger-left {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
  }

  .nav-drawer-submenu-trigger svg.trigger-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
  }

  .nav-drawer-submenu-trigger svg.trigger-arrow {
    width: 16px;
    height: 16px;
    transition: transform var(--transition);
  }

  .nav-drawer-submenu.active .nav-drawer-submenu-trigger svg.trigger-arrow {
    transform: rotate(180deg);
  }

  .nav-drawer-submenu-items {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
    background: var(--surface-alt);
  }

  .nav-drawer-submenu.active .nav-drawer-submenu-items {
    max-height: 300px;
  }

  .nav-drawer-submenu-items a {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    padding: 10px var(--sp-4) 10px calc(var(--sp-4) + 28px);
    color: var(--ink-muted);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition);
    border-left: 2px solid transparent;
  }

  .nav-drawer-submenu-items a:hover,
  .nav-drawer-submenu-items a.active {
    color: var(--primary);
    background: rgba(25, 118, 210, 0.04);
    border-left-color: var(--primary);
  }

  .nav-drawer-submenu-items .city-dot {
    width: 6px;
    height: 6px;
    border-radius: var(--r-full);
    background: var(--ink-lighter);
    flex-shrink: 0;
    transition: background var(--transition);
  }

  .nav-drawer-submenu-items a:hover .city-dot,
  .nav-drawer-submenu-items a.active .city-dot {
    background: var(--primary);
  }

  .nav-drawer-divider {
    height: 1px;
    background: rgba(0, 0, 0, 0.06);
    margin: var(--sp-4) 0;
  }

  /* Tablet */
  @media (min-width: 768px) {
    .nav-logo img {
      height: 42px;
    }

    .nav-btn {
      width: 42px;
      height: 42px;
    }

    .nav-burger {
      width: 42px;
      height: 42px;
    }
  }

  /* Desktop */
  @media (min-width: 1024px) {
    .nav-links {
      display: flex;
    }

    .nav-burger {
      display: none;
    }

    .nav-bottom {
      display: none;
    }

    body {
      padding-bottom: 0;
    }

    .nav-logo img {
      height: 46px;
    }

    .nav-link,
    .nav-dropdown-trigger {
      font-size: 15px;
    }

    .nav-actions {
      gap: var(--sp-4);
    }
  }

  @media (min-width: 1280px) {
    .nav-links {
      gap: var(--sp-10);
    }
  }