/* ── Base ── */
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; scroll-padding-top: 80px; }
  body { margin: 0; -webkit-font-smoothing: antialiased; }

  /* ── Navbar ── */
  #navbar {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
  }
  #navbar.scrolled {
    background: rgba(254, 253, 248, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
  }
  #navbar.scrolled .font-display { color: #1a1a1a !important; }

  /* ── Nav links ── */
  .nav-link { position: relative; }
  .nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: #059669;
    border-radius: 1px;
    transition: width 0.3s ease;
  }
  .nav-link:hover::after { width: 100%; }

  /* ── Mobile menu ── */
  #mobile-menu {
    animation: slideDown 0.3s ease forwards;
  }
  @keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .mobile-link { border-radius: 12px; }

  /* ── Float animations ── */
  @keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-20px) scale(1.03); }
  }
  @keyframes float-delay {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-16px) scale(1.02); }
  }
  .animate-float { animation: float 6s ease-in-out infinite; }
  .animate-float-delay { animation: float-delay 7s ease-in-out infinite 1s; }

  /* ── Reveal animations ── */
  .reveal-up, .reveal-left, .reveal-right {
    opacity: 0;
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .reveal-up { transform: translateY(40px); }
  .reveal-left { transform: translateX(-40px); }
  .reveal-right { transform: translateX(40px); }
  .reveal-visible {
    opacity: 1;
    transform: translate(0, 0);
  }

  /* ── Stagger children ── */
  .reveal-up[style*="transition-delay"] { transition-delay: attr(transition-delay ms); }

  /* ── Image hover ── */
  .rounded-3xl img, .rounded-2xl img {
    transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  }

  /* ── Custom scrollbar ── */
  ::-webkit-scrollbar { width: 8px; }
  ::-webkit-scrollbar-track { background: #fdf9ee; }
  ::-webkit-scrollbar-thumb { background: #a7f3d0; border-radius: 4px; }
  ::-webkit-scrollbar-thumb:hover { background: #6ee7b7; }

  /* ── Selection ── */
  ::selection { background: #a7f3d0; color: #064e3b; }

  /* ── Focus visible ── */
  :focus-visible { outline: 2px solid #10b981; outline-offset: 2px; }

  /* ── Responsive tweaks ── */
  @media (max-width: 640px) {
    h1 { font-size: 2.75rem !important; }
    h2 { font-size: 2.25rem !important; }
  }