/* ==========================================================================
   base.css — reset, defaults, utilities. No raw values; tokens only.
   ========================================================================== */

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

* { margin: 0; }

html {
  scroll-behavior: smooth;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--transition-interactive), color var(--transition-interactive);
}

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

a {
  color: var(--color-text);
  text-decoration-color: var(--color-border-strong);
  text-underline-offset: 0.2em;
  transition: color var(--transition-interactive), text-decoration-color var(--transition-interactive);
}

a:hover { color: var(--color-primary); text-decoration-color: var(--color-primary); }

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

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

h1, h2, h3 { line-height: 1.15; font-weight: 600; }

ul[role="list"], ol[role="list"] { list-style: none; padding: 0; }

/* ----- utilities ----- */

.wrap {
  width: min(var(--content-default), 100% - clamp(var(--space-8), 8vw, var(--space-16)));
  margin-inline: auto;
}

.mono-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-faint);
}

.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;
}

.skip-link {
  position: absolute;
  top: var(--space-2); left: var(--space-2);
  z-index: 10;
  background: var(--color-surface);
  color: var(--color-text);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  transform: translateY(-200%);
}

.skip-link:focus { transform: none; }

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