/* Base: reset, type defaults, layout primitives. Components live in components.css. */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: 88px;
}
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }

body {
  min-height: 100dvh;
  background: var(--canvas);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

img, svg, video, canvas { display: block; max-width: 100%; height: auto; }
img { font-style: italic; }            /* alt text reads as a caption if the image fails */
input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; padding: 0; }
p, h1, h2, h3, h4, li, dd, figcaption { overflow-wrap: break-word; }
h1, h2, h3, h4 { text-wrap: balance; font-weight: var(--weight-regular); }
p { text-wrap: pretty; }
ul[role="list"], ol[role="list"] { list-style: none; padding: 0; }

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

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

a { color: inherit; text-decoration-color: var(--border-strong); text-underline-offset: 0.22em; text-decoration-thickness: 1px; }
a:where(:not([class])) {
  transition: text-decoration-color var(--duration-fast) var(--ease), color var(--duration-fast) var(--ease);
}
a:where(:not([class])):hover { color: var(--accent-hover); text-decoration-color: currentColor; }

/* pixel art is displayed as pixels, never smoothed */
.pixel { image-rendering: pixelated; image-rendering: crisp-edges; }

/* ── type roles ──────────────────────────────────────────── */

.display {
  font-family: var(--font-display);
  font-size: var(--text-display);
  line-height: var(--leading-display);
  letter-spacing: var(--tracking-display);
  font-weight: var(--weight-regular);
  font-optical-sizing: auto;
}
.h1 {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-display);
}
.h2 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-heading);
}
.h3 {
  font-family: var(--font-sans);
  font-size: var(--text-xl);
  line-height: var(--leading-snug);
  letter-spacing: -0.01em;
  font-weight: var(--weight-medium);
}
.lead {
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--text-2);
  max-width: var(--measure);
}
.body-2 { color: var(--text-2); }
.muted { color: var(--text-muted); }
.italic { font-style: italic; }
em.accent, .accent { color: var(--accent); font-style: italic; }

/* Mono label: facts, eyebrows, metadata. Uppercase + tracking, never bold. */
.label {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  line-height: 1.4;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--text-muted);
}
.label--accent { color: var(--accent); }

.prose { max-width: var(--measure); color: var(--text-2); }
.prose > * + * { margin-top: 1.1em; }
.prose h2 { font-family: var(--font-display); font-size: var(--text-2xl); line-height: var(--leading-tight); color: var(--text); margin-top: 2em; letter-spacing: var(--tracking-heading); }
.prose h3 { font-size: var(--text-lg); font-weight: var(--weight-medium); color: var(--text); margin-top: 1.8em; }
.prose strong { color: var(--text); font-weight: var(--weight-medium); }
.prose ul { padding-left: 1.2em; }
.prose li + li { margin-top: 0.4em; }
.prose li::marker { color: var(--accent); }

/* ── layout primitives ───────────────────────────────────── */

.container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--narrow { max-width: calc(var(--container-narrow) + var(--gutter) * 2); }

.section { padding-block: var(--section-y); }
.section--tight { padding-block: calc(var(--section-y) * 0.6); }
/* two sections on the same canvas share one gap, not two */
.section + .section { padding-top: 0; }

.stack > * + * { margin-top: var(--stack, var(--space-4)); }
.cluster { display: flex; flex-wrap: wrap; gap: var(--cluster, var(--space-3)); align-items: center; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: absolute; left: var(--space-4); top: -100px; z-index: 100;
  background: var(--accent); color: var(--accent-text);
  padding: var(--space-2) var(--space-4); border-radius: var(--radius);
  font-weight: var(--weight-medium); text-decoration: none;
}
.skip-link:focus { top: var(--space-4); }

/* ── motion ──────────────────────────────────────────────── */

/* Entrances run once, travel 16px, stagger by --i × 60ms. JS adds .is-in. */
@media (prefers-reduced-motion: no-preference) {
  .js .reveal {
    opacity: 0;
    transform: translateY(16px);
    transition:
      opacity var(--duration-enter) var(--ease-out),
      transform var(--duration-enter) var(--ease-out);
    transition-delay: calc(var(--i, 0) * 60ms);
  }
  .js .reveal.is-in { opacity: 1; transform: none; }
}

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