*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-terminal);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background: radial-gradient(ellipse at bottom, #0d1117 0%, #000000 100%);
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  background-position: center center;
  pointer-events: none;
  z-index: var(--z-base);
  animation: gridMove 20s linear infinite;
}

body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 20% 50%, rgba(0, 240, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255, 16, 240, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 40% 20%, rgba(0, 255, 65, 0.06) 0%, transparent 40%);
  pointer-events: none;
  z-index: var(--z-base);
  animation: glowPulse 8s ease-in-out infinite;
}

@keyframes gridMove {
  0% {
    transform: perspective(500px) rotateX(60deg) translateY(0);
  }
  100% {
    transform: perspective(500px) rotateX(60deg) translateY(50px);
  }
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: all var(--duration-fast) ease;
  position: relative;
}

a:hover {
  color: var(--color-primary);
  text-shadow: var(--glow-cyan-strong);
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

::selection {
  background: var(--color-primary);
  color: var(--color-bg-true);
}

::-moz-selection {
  background: var(--color-primary);
  color: var(--color-bg-true);
}

::-webkit-scrollbar {
  width: 12px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-deep);
  border-left: 1px solid rgba(0, 240, 255, 0.2);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  box-shadow: var(--glow-cyan);
  border-radius: 0;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
  box-shadow: var(--glow-cyan-strong);
}

* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary) var(--color-bg-deep);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-tertiary { color: var(--color-tertiary); }
.text-muted { color: var(--color-text-secondary); }