/* =========================================================
   BASE — reset + typography + a11y foundations
   ========================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  -moz-tab-size: 4;
  tab-size: 4;
  scroll-behavior: smooth;
}

@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;
  }
}

html, body { margin: 0; padding: 0; }

body {
  min-height: 100vh;
  background-color: var(--surface);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--type-sm);
  line-height: var(--leading-relaxed);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  transition: background-color var(--dur-base) var(--ease-out),
              color var(--dur-base) var(--ease-out);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--text);
  margin: 0 0 var(--space-5);
}

h1 { font-size: var(--type-3xl); }
h2 { font-size: var(--type-2xl); }
h3 { font-size: var(--type-xl); }
h4 { font-size: var(--type-lg); }
h5 { font-size: var(--type-md); }
h6 { font-size: var(--type-sm); text-transform: uppercase; letter-spacing: var(--tracking-wider); }

p {
  margin: 0 0 var(--space-5);
  line-height: var(--leading-relaxed);
}

a {
  color: var(--link);
  text-decoration: none;
  text-decoration-color: currentColor;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color var(--dur-fast) var(--ease-out);
}
a:hover { color: var(--link-hover); }

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

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: var(--space-7) 0;
}

::selection {
  background: var(--accent);
  color: var(--paper);
}

/* X-02 · Focus styles, everywhere */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: 2px;
}

/* X-01 · Skip-to-content link */
.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  padding: var(--space-3) var(--space-5);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: var(--type-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  text-decoration: none;
  z-index: calc(var(--z-modal) + 1);
  transform: translateY(-110%);
  transition: transform var(--dur-fast) var(--ease-out);
}
.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline-offset: -3px;
}

/* Screen-reader-only utility */
.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;
}

/* ---- Layout primitives ---- */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--narrow { max-width: var(--content-narrow); }
.container--medium { max-width: var(--content-medium); }

main { display: block; }
main:focus-visible { outline: none; }

/* Section rhythm */
.section { padding-block: var(--space-9); }
.section--lg { padding-block: var(--space-10); }
.section--sm { padding-block: var(--space-7); }

/* Editorial display helpers */
.eyebrow {
  font-family: var(--font-sans);
  font-size: var(--type-xs);
  font-weight: 400;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--text-faint);
  margin: 0 0 var(--space-4);
}

.display {
  font-family: var(--font-serif);
  font-size: var(--type-display);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  font-weight: 400;
  margin: 0;
}

.lede {
  font-family: var(--font-serif);
  font-size: var(--type-lg);
  line-height: var(--leading-snug);
  color: var(--text-muted);
  font-style: italic;
}