/* ── Base ── */
  *, *::before, *::after {
    box-sizing: border-box;
  }

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

  body {
    margin: 0;
    overflow-x: hidden;
  }

  img {
    max-width: 100%;
    display: block;
  }

  ::selection {
    background: rgba(123, 45, 58, 0.15);
    color: #5C1F2A;
  }

  /* ── Navigation ── */
  .nav-fixed {
    background: rgba(255, 252, 250, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(232, 213, 207, 0.5);
    transition: background 0.4s ease, box-shadow 0.4s ease;
  }

  .nav-fixed.scrolled {
    background: rgba(255, 252, 250, 0.97);
    box-shadow: 0 1px 20px rgba(123, 45, 58, 0.06);
  }

  .nav-link {
    position: relative;
  }

  .nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0;
    height: 1px;
    background: #7B2D3A;
    transition: all 0.3s ease;
    transform: translateX(-50%);
  }

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

  /* ── Mobile menu ── */
  #mobile-menu.open {
    opacity: 1;
    pointer-events: all;
  }

  .mobile-link {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
  }

  #mobile-menu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
  }

  #mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.05s; }
  #mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.1s; }
  #mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.15s; }
  #mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.2s; }

  .menu-line {
    transition: all 0.3s ease;
  }

  #menu-btn.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(3px, 3px);
  }

  #menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
  }

  #menu-btn.active .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(3px, -3px);
    width: 5;
  }

  /* ── Floating cards ── */
  @media (prefers-reduced-motion: no-preference) {
    .animate-float {
      animation: float 4s ease-in-out infinite;
    }

    .animate-float-delayed {
      animation: float 4s ease-in-out infinite 2s;
    }
  }

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

  /* ── Scroll reveal (progressive enhancement) ── */
  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.8s ease, transform 0.8s ease;
    }

    .reveal.revealed {
      opacity: 1;
      transform: translateY(0);
    }

    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
  }

  /* ── Scrollbar ── */
  ::-webkit-scrollbar {
    width: 6px;
  }

  ::-webkit-scrollbar-track {
    background: #FFFCFA;
  }

  ::-webkit-scrollbar-thumb {
    background: rgba(123, 45, 58, 0.2);
    border-radius: 3px;
  }

  ::-webkit-scrollbar-thumb:hover {
    background: rgba(123, 45, 58, 0.4);
  }

  /* ── Focus styles ── */
  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  textarea:focus-visible {
    outline: 2px solid rgba(123, 45, 58, 0.4);
    outline-offset: 2px;
  }