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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, sans-serif;
  font-weight: 300;
  background-color: #040d18;
  color: #d4dce6;
}

::selection {
  background: rgba(36, 196, 138, 0.3);
  color: #f0f4f8;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #040d18; }
::-webkit-scrollbar-thumb { background: #1e3a5c; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #24c48a; }

/* Reveal animations — progressive enhancement */
[data-reveal] {
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-reduced-motion: no-preference) {
  [data-reveal] {
    opacity: 0;
    transform: translateY(32px);
  }
  [data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
  }
  [data-reveal][data-delay="150"].revealed { transition-delay: 0.15s; }
  [data-reveal][data-delay="300"].revealed { transition-delay: 0.3s; }
  [data-reveal][data-delay="450"].revealed { transition-delay: 0.45s; }
  [data-reveal][data-delay="650"].revealed { transition-delay: 0.65s; }
  [data-reveal][data-delay="800"].revealed { transition-delay: 0.8s; }
  [data-reveal][data-delay="1000"].revealed { transition-delay: 1s; }
}

/* Header scroll state */
#site-header.scrolled {
  background: rgba(4, 13, 24, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(124, 148, 178, 0.08);
}

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

/* Form select arrow */
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%237c94b2' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
}

/* Focus styles */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid #24c48a;
  outline-offset: 2px;
  border-radius: 4px;
}

/* Smooth image loading */
img {
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}