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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text-main);
  background-color: var(--color-abyss);
  background-image: linear-gradient(
    to bottom,
    var(--color-surface) 0%,
    var(--color-midwater) 40%,
    var(--color-abyss) 100%
  );
  background-attachment: fixed;
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-glow-cyan);
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

a {
  color: var(--color-glow-cyan);
  text-decoration: none;
  transition: color 0.3s ease, text-shadow 0.3s ease;
}

a:hover {
  color: #fff;
  text-shadow: 0 0 8px var(--color-glow-cyan);
}

ul, ol {
  list-style: none;
}

/* Base Utility */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}