/* ==========================================================================
   Base: fonts, reset, typography, links, media, focus, utilities
   ========================================================================== */

/* ---- Fonts (self-hosted Public Sans, variable weight 100–900) ---------- */
@font-face {
  font-family: "Public Sans";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../fonts/public-sans-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Public Sans";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../fonts/public-sans-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Public Sans";
  font-style: italic;
  font-weight: 100 900;
  font-display: swap;
  src: url("../fonts/public-sans-italic-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

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

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1rem);
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1 0 auto; }

img, picture, svg, video, iframe { display: block; max-width: 100%; }
img { height: auto; }
picture { display: contents; }   /* the <picture> that offers AVIF must not become a box of its own */

input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; padding: 0; }

ul[class], ol[class] { list-style: none; padding: 0; }

/* ---- Typography -------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-heading);
  font-family: var(--font-heading);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  text-wrap: balance;
}
h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-xl); line-height: var(--leading-snug); }
h4 { font-size: var(--text-lg); line-height: var(--leading-snug); }
h5, h6 { font-size: var(--text-base); }
/* Size utilities: keep the semantic level, borrow another level's size */
.h2 { font-size: var(--text-3xl); }
.h3 { font-size: var(--text-xl); line-height: var(--leading-snug); }
.h4 { font-size: var(--text-lg); line-height: var(--leading-snug); }

p { text-wrap: pretty; }
p + p { margin-top: 1em; }

.lead { font-size: var(--text-lg); color: var(--color-text-muted); }
.text-muted { color: var(--color-text-muted); }
.text-small { font-size: var(--text-sm); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 1.5rem;
  height: 2px;
  background: currentColor;
  border-radius: var(--radius-full);
}
.eyebrow--plain::before { display: none; }

strong, b { font-weight: var(--weight-semibold); }

hr {
  border: 0;
  border-top: 1px solid var(--color-border);
  margin: var(--space-8) 0;
}

/* ---- Links ------------------------------------------------------------- */
a {
  color: var(--color-link);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
  transition: color var(--duration-fast) var(--ease-out);
}
a:hover { color: var(--color-link-hover); }

/* ---- Focus ------------------------------------------------------------- */
:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}
:focus:not(:focus-visible) { outline: none; }

/* ---- Selection --------------------------------------------------------- */
::selection { background: var(--blue-100); color: var(--navy-900); }

/* ---- Icons ------------------------------------------------------------- */
.icon {
  width: 1.25em;
  height: 1.25em;
  flex: none;
  fill: none;
  stroke: currentColor;
  vertical-align: -0.3em;
}
.icon--sm { width: 1em; height: 1em; }
.icon--lg { width: 1.75em; height: 1.75em; }

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

.skip-link {
  position: absolute;
  top: 0.5rem; left: 0.5rem;
  z-index: var(--z-skip);
  padding: var(--space-3) var(--space-4);
  background: var(--navy-900);
  color: var(--n-0);
  border-radius: var(--radius-md);
  font-weight: var(--weight-semibold);
  text-decoration: none;
  transform: translateY(-200%);
}
.skip-link:focus { transform: none; }

/* ---- Reduced motion ---------------------------------------------------- */
@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;
  }
}

/* ---- Smooth page transitions (cross-document view transitions; browsers that lack them just navigate) ---- */
@view-transition { navigation: auto; }
::view-transition-old(root) { animation-duration: 0.2s; }
::view-transition-new(root) { animation-duration: 0.28s; }
@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(root), ::view-transition-new(root) { animation: none; }
}