/* ============================================================
   Base: modern reset, box model, typography, base elements
   Consumes tokens from variables.css (must be linked first).
   ============================================================ */

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

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

body {
  font-family: var(--font-body);
  font-size: var(--fs-400);
  line-height: var(--lh-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: var(--lh-tight);
  color: var(--color-heading);
  font-weight: 700;
}

h1 { font-size: var(--fs-800); }
h2 { font-size: var(--fs-700); }
h3 { font-size: var(--fs-600); }
h4 { font-size: var(--fs-500); }

p { max-width: 70ch; }

a {
  color: var(--color-secondary-dark);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

img,
picture,
video,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul, ol { list-style: none; }

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

button { cursor: pointer; background: none; border: none; }

:focus-visible {
  outline: 3px solid var(--color-secondary);
  outline-offset: 2px;
}

/* Accessibility helpers */
.sr-only {
  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) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}