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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  line-height: var(--lh-normal);
  letter-spacing: var(--tracking-snug);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(1200px 700px at 80% -10%, rgba(79, 140, 255, 0.10), transparent 60%),
    radial-gradient(900px 600px at -10% 110%, rgba(125, 224, 255, 0.06), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

main,
header,
footer {
  position: relative;
  z-index: 1;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: var(--fw-light);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text);
}

h1 { font-size: var(--fs-display); }
h2 { font-size: var(--fs-3xl); }
h3 { font-size: var(--fs-xl); font-weight: var(--fw-regular); }
h4 { font-size: var(--fs-lg); font-weight: var(--fw-medium); letter-spacing: var(--tracking-snug); }

p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--fs-md);
  line-height: var(--lh-loose);
  max-width: 60ch;
}

a {
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}

a:hover {
  color: var(--color-accent);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

ul, ol {
  list-style: none;
  padding: 0;
  margin: 0;
}

img, svg {
  display: block;
  max-width: 100%;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

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

/* Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-inline: var(--container-px);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--color-accent);
  display: inline-block;
}

.text-muted { color: var(--color-text-muted); }
.text-dim   { color: var(--color-text-dim); }
.text-mono  { font-family: var(--font-mono); }

.lead {
  font-size: clamp(var(--fs-md), 1.5vw + 0.6rem, var(--fs-lg));
  line-height: var(--lh-normal);
  color: var(--color-text-muted);
  max-width: 64ch;
}

.divider {
  width: 100%;
  height: 1px;
  background: var(--color-border);
  border: 0;
  margin: 0;
}

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}