/* ─── RESET & BASE ─────────────────────────────────────────── */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 8px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Smooth color swap only while the theme is being toggled */
html.theme-fade *,
html.theme-fade *::before,
html.theme-fade *::after {
  transition: background-color 350ms ease, color 350ms ease, border-color 350ms ease, fill 350ms ease !important;
}

h1, h2, h3, p, ul, ol, figure, dl, dd { margin: 0; padding: 0; }
ul, ol { list-style: none; }
h1, h2, h3 { text-wrap: balance; line-height: 1.1; font-weight: 600; }
p { text-wrap: pretty; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }

/* Numerals line up in stats and dates */
.tnum { font-variant-numeric: tabular-nums; }

/* ─── BROWSER SURFACES ─────────────────────────────────────── */
::selection { background: var(--accent); color: var(--on-accent); }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
input, textarea { caret-color: var(--accent); }

html { scrollbar-width: thin; scrollbar-color: var(--scroll-thumb) transparent; }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--scroll-thumb); border-radius: 8px; }

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

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 12px; left: 12px;
  z-index: 200;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-pill);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-weight: 500;
  transform: translateY(-160%);
  transition: transform var(--dur-fast) var(--ease-out);
}
.skip-link:focus { transform: none; }

.icon { width: 1.25em; height: 1.25em; flex: none; fill: currentColor; }
.icon--stroke { fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }

/* Scroll reveal — content is visible by default, JS opts in via .js */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}
.js [data-reveal].is-visible { opacity: 1; transform: none; }

@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;
  }
  .js [data-reveal] { opacity: 1; transform: none; }
}