*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 64px; }

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

::selection {
  background: color-mix(in srgb, currentColor 12%, transparent);
}

/* Mobile menu animations */
.menu-line {
  display: block;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

#menu-btn[aria-expanded="true"] .menu-line:nth-child(1) {
  transform: rotate(45deg) translate(3px, 3px);
}

#menu-btn[aria-expanded="true"] .menu-line:nth-child(2) {
  opacity: 0;
}

#menu-btn[aria-expanded="true"] .menu-line:nth-child(3) {
  transform: rotate(-45deg) translate(3px, -3px);
  width: 1.25rem;
}

/* Scroll reveal — progressive enhancement, respects reduced motion */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    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; }
}

/* Subtle focus styles */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid color-mix(in srgb, currentColor 50%, transparent);
  outline-offset: 2px;
  border-radius: 4px;
}
</style>