/* ── Base & Utilities ── */
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; scroll-padding-top: 80px; }
  body { overflow-x: hidden; }
  
  /* ── Navbar ── */
  #navbar {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
  }
  #navbar.scrolled {
    background: rgba(250, 251, 248, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 rgba(45, 90, 61, 0.06);
  }
  
  /* ── Floating Cards Animation ── */
  @keyframes float-slow {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
  }
  @keyframes float-medium {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-14px); }
  }
  @keyframes float-fast {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-18px); }
  }
  .float-slow { animation: float-slow 6s ease-in-out infinite; }
  .float-medium { animation: float-medium 4.5s ease-in-out infinite; }
  .float-fast { animation: float-fast 3.5s ease-in-out infinite; }
  
  /* ── Room Cards ── */
  .room-card {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .room-card.visible {
    opacity: 1;
    transform: translateY(0);
  }
  
  /* ── Mobile Menu ── */
  #mobile-menu.open {
    opacity: 1;
    pointer-events: all;
  }
  #mobile-menu.closed {
    opacity: 0;
    pointer-events: none;
  }
  .menu-line.active:nth-child(1) {
    transform: rotate(45deg) translate(3px, 3px);
  }
  .menu-line.active:nth-child(2) {
    opacity: 0;
  }
  .menu-line.active:nth-child(3) {
    width: 1.25rem;
    transform: rotate(-45deg) translate(3px, -3px);
  }
  
  /* ── Selection ── */
  ::selection {
    background: rgba(45, 90, 61, 0.15);
    color: #1c3a27;
  }
  
  /* ── Focus visible ── */
  :focus-visible {
    outline: 2px solid #2D5A3D;
    outline-offset: 2px;
  }
  
  /* ── Custom scrollbar ── */
  ::-webkit-scrollbar { width: 8px; }
  ::-webkit-scrollbar-track { background: #FAFBF8; }
  ::-webkit-scrollbar-thumb { background: #bcd3be; border-radius: 4px; }
  ::-webkit-scrollbar-thumb:hover { background: #93b896; }