/* Base & Typography */
html {
  scroll-behavior: smooth;
}

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
  background: #94a3b8;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #64748b;
}

/* Nav */
.nav {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  transition: box-shadow 0.3s ease;
}

.nav.scrolled {
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.08);
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: #0d9488;
  transition: width 0.3s ease;
}

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

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

.nav-toggle.active .nav-line:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}

.nav-toggle.active .nav-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active .nav-line:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -4px);
  width: 1.25rem;
}

/* Scroll reveal */
.reveal {
  opacity: 1;
  transform: translateY(0);
  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);
}

/* Hero */
.hero {
  background: #0f172a;
}

/* Editorial divider */
.section-divider {
  position: relative;
}

.section-divider::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, #0d9488, #5eead4);
  border-radius: 2px;
}

/* Stagger children */
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.15s; }
.reveal:nth-child(4) { transition-delay: 0.2s; }
.reveal:nth-child(5) { transition-delay: 0.25s; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html {
    scroll-behavior: auto;
  }
  .group img {
    transition: none;
  }
}

/* Focus styles */
a:focus-visible,
button:focus-visible {
  outline: 2px solid #0d9488;
  outline-offset: 2px;
  border-radius: 4px;
}

/* Selection */
::selection {
  background: #ccfbf1;
  color: #134e4a;
}