/* ============================================================
   ScoreIndexer — Base (stylesheet 2 of 4)
   Reset, document defaults, layout primitives, accessibility.
   ============================================================ */

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-body);
  color: var(--c-ink);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: 'cv01', 'cv02', 'cv03';
}

h1, h2, h3, h4 {
  line-height: var(--lh-tight);
  margin: 0 0 var(--sp-3);
  font-weight: var(--fw-bold);
  color: var(--c-ink);
  font-family: var(--font-display);
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2.4rem, 6vw, var(--fs-3xl)); letter-spacing: -0.03em; }
h2 { font-size: var(--fs-2xl); letter-spacing: -0.02em; }
h3 { font-size: var(--fs-lg); letter-spacing: -0.01em; }
p  { margin: 0 0 var(--sp-4); }

a {
  color: var(--c-accent-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color var(--dur-fast) ease, text-decoration-color var(--dur-fast) ease;
}
a:hover { color: var(--c-accent); text-decoration-color: transparent; }

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

ul, ol { margin: 0 0 var(--sp-4); padding-left: var(--sp-5); }

code, kbd { font-family: var(--font-mono); font-size: 0.9em; }

/* --- Layout primitives ------------------------------------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--sp-5); }
.container--narrow { max-width: var(--container-narrow); }

.section { padding-block: var(--sp-8); }
.section--alt { background: var(--c-bg-alt); }

.grid { display: grid; gap: var(--sp-5); }
@media (min-width: 640px)  { .grid--2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px)  { .grid--3 { grid-template-columns: repeat(3, 1fr); }
                             .grid--4 { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 899px)  { .grid--4 { grid-template-columns: repeat(2, 1fr); } }

/* --- Accessibility ----------------------------------------- */
.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;
}

.skip-link {
  position: absolute; left: var(--sp-3); top: -100px;
  background: var(--c-accent); color: #fff; padding: var(--sp-3) var(--sp-4);
  border-radius: var(--r-md); z-index: 200; transition: top var(--dur-fast) var(--ease-out);
  text-decoration: none; font-weight: var(--fw-semibold); font-size: var(--fs-sm);
}
.skip-link:focus { top: var(--sp-3); color: #fff; }

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

/* --- Text utilities ---------------------------------------- */
.eyebrow {
  font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .1em;
  font-weight: var(--fw-bold); color: var(--c-accent); margin: 0 0 var(--sp-2);
  display: inline-flex; align-items: center; gap: var(--sp-2);
}
.eyebrow::before {
  content: '';
  display: inline-block;
  width: 24px; height: 2px;
  background: var(--c-accent);
  border-radius: 1px;
}
.lede { font-size: var(--fs-md); color: var(--c-ink-soft); }
.meta { font-size: var(--fs-sm); color: var(--c-muted); }