/*
 * Intel Parker — Base Styles
 * Reset, typography, layout primitives.
 * Import second in every page, after tokens.css.
 */

/* ── Font faces ── */

/* Switzer — display/heading font */
@font-face {
  font-family: 'Switzer';
  src: url('../fonts/switzer/Switzer-Variable.woff2') format('woff2-variations');
  font-weight: 100 900;
  font-display: swap;
  font-style: normal;
}

/* Inter — body font */
@font-face {
  font-family: 'Inter';
  src: url('../fonts/inter/Inter-Variable.woff2') format('woff2-variations');
  font-weight: 100 900;
  font-display: swap;
  font-style: normal;
}

/* JetBrains Mono — UI monospace */
@font-face {
  font-family: 'JetBrains Mono';
  src: url('../fonts/jetbrains-mono/JetBrainsMono-Variable.woff2') format('woff2-variations');
  font-weight: 100 800;
  font-display: swap;
  font-style: normal;
}

/* ── Reset ── */

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

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

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  color: var(--color-ink);
  background: var(--color-paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ── Typography defaults ── */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  color: var(--color-ink);
}

h1 { font-size: var(--text-h1); }
h2 { font-size: var(--text-h2); }
h3 { font-size: var(--text-h3); line-height: var(--leading-snug); }
h4 { font-size: var(--text-h4); line-height: var(--leading-snug); }

p {
  margin-bottom: var(--space-4);
  max-width: 65ch;
}

p:last-child { margin-bottom: 0; }

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

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

ul, ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
}

li {
  margin-bottom: var(--space-2);
}

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

/* ── Focus styles ── */

:focus {
  outline: none;
}

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

/* ── Selection ── */

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

/* ── Layout utilities ── */

.container {
  max-width: var(--content-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--content-gutter);
  padding-right: var(--content-gutter);
}

.container-wide {
  max-width: calc(var(--content-width) + 64px);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--content-gutter);
  padding-right: var(--content-gutter);
}

/* Section defaults */
.section {
  padding-top: var(--space-32);
  padding-bottom: var(--space-32);
}

.section--alt {
  background: var(--color-stone-50);
}

.section--ink {
  background: var(--color-ink);
  color: var(--color-paper);
}

.section--ink h1,
.section--ink h2,
.section--ink h3,
.section--ink h4 {
  color: var(--color-paper);
}

.section-header {
  text-align: left;
  margin-bottom: var(--space-16);
}

.section-header--center {
  text-align: center;
}

.section-label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.section-title {
  font-size: var(--text-h2);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-6);
  color: var(--color-ink);
}

.section-subtitle {
  font-size: var(--text-body-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-stone-600);
  max-width: 600px;
}

.section-header--center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* ── Responsive section padding ── */

@media (max-width: 768px) {
  .section {
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
  }
}

/* ── Grid helpers ── */

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--grid-gap);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--grid-gap);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--grid-gap);
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* ── Accessible screen reader only ── */

.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;
}