/* ========== RESET & BASE ========== */
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; scroll-padding-top: 5rem; }
  body { margin: 0; }
  img { display: block; max-width: 100%; }

  /* ========== SCROLL REVEAL (progressive enhancement) ========== */
  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 0;
      transform: translateY(32px);
      transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
                  transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .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; }
    .reveal-delay-4 { transition-delay: 0.4s; }
    .reveal-delay-5 { transition-delay: 0.5s; }
  }

  /* ========== NAV SCROLL STATE ========== */
  #navbar.scrolled {
    box-shadow: 0 1px 12px rgba(15, 28, 10, 0.08);
  }

  /* ========== MOBILE MENU ANIMATION ========== */
  #menu-btn.active #bar1 {
    transform: rotate(45deg) translate(5px, 5px);
  }
  #menu-btn.active #bar2 {
    opacity: 0;
  }
  #menu-btn.active #bar3 {
    width: 24px;
    transform: rotate(-45deg) translate(5px, -5px);
  }

  /* ========== CUSTOM SCROLLBAR ========== */
  ::-webkit-scrollbar { width: 8px; }
  ::-webkit-scrollbar-track { background: #f9f7ef; }
  ::-webkit-scrollbar-thumb { background: #4a7e35; border-radius: 4px; }
  ::-webkit-scrollbar-thumb:hover { background: #3a6628; }

  /* ========== FOCUS VISIBLE ========== */
  a:focus-visible, button:focus-visible {
    outline: 2px solid #4a7e35;
    outline-offset: 2px;
    border-radius: 4px;
  }