/* ===== Base & Typography ===== */
*, *::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;
}

::selection {
  background: #D4A84B;
  color: #1C2D4A;
}

/* ===== Scroll Reveal (progressive enhancement) ===== */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  }

  .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; }
}

/* ===== Navbar transitions ===== */
#navbar.scrolled {
  background: rgba(250, 247, 242, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(28, 45, 74, 0.08);
}

#navbar.scrolled .font-serif {
  color: #1C2D4A;
}

#navbar.scrolled #bar1,
#navbar.scrolled #bar2,
#navbar.scrolled #bar3 {
  background: #1C2D4A;
}

/* ===== Mobile menu ===== */
.mobile-link {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.4s ease, transform 0.4s ease, color 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; }
#mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.25s; }

/* ===== Hamburger animation ===== */
#menu-toggle[aria-expanded="true"] #bar1 {
  transform: translateY(7px) rotate(45deg);
}
#menu-toggle[aria-expanded="true"] #bar2 {
  opacity: 0;
  transform: scaleX(0);
}
#menu-toggle[aria-expanded="true"] #bar3 {
  transform: translateY(-7px) rotate(-45deg);
  width: 1.5rem;
}

/* ===== Smooth image loading ===== */
img {
  display: block;
  max-width: 100%;
}

/* ===== Focus styles ===== */
a:focus-visible,
button:focus-visible {
  outline: 2px solid #D4A84B;
  outline-offset: 4px;
  border-radius: 4px;
}

/* ===== Custom scrollbar ===== */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #FAF7F2;
}
::-webkit-scrollbar-thumb {
  background: #2A3F5E;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #1C2D4A;
}

/* ===== Menu hover row effect ===== */
#menu ul li {
  position: relative;
}

#menu ul li::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background: #D4A84B;
  transition: width 0.3s ease;
}

#menu ul li:hover::after {
  width: calc(100% - 2.25rem);
}

/* ===== Print styles ===== */
@media print {
  #navbar, #menu-toggle, .reveal { display: none; }
  body { color: #000; background: #fff; }
  section { padding: 1rem 0; }
}