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

/* Scroll Reveal — progressive enhancement, hidden by default, revealed by JS */
@media (prefers-reduced-motion: no-preference) {
  .scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  }
  .scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
  }
  .scroll-reveal[data-delay="100ms"].revealed { transition-delay: 100ms; }
  .scroll-reveal[data-delay="200ms"].revealed { transition-delay: 200ms; }
  .scroll-reveal[data-delay="300ms"].revealed { transition-delay: 300ms; }
}

/* Navbar scroll state */
#navbar.scrolled {
  background: rgba(8, 28, 9, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

/* Mobile menu */
#mobile-menu {
  animation: slideDown 0.25s ease-out;
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Custom scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f5f3ed; }
::-webkit-scrollbar-thumb { background: #82c97e; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #4fa84d; }

/* Selection */
::selection { background: #d9edda; color: #1f6b25; }