/* ==========================================================================
   Base: reset, element defaults, layout helpers, accessibility utilities
   ========================================================================== */

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

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-height) + var(--space-4));
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  min-height: 100dvh;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.has-dialog {
  overflow: hidden;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

/* :where() keeps specificity at zero so layout classes can still set padding. */
:where(ul[role="list"]) {
  list-style: none;
  padding: 0;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.15;
  font-optical-sizing: auto;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

:focus-visible {
  outline: 2px solid var(--color-gold-soft);
  outline-offset: 3px;
}

[hidden] {
  display: none !important;
}

/* ---------- Layout ---------- */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- Accessibility ---------- */

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

.skip-link {
  position: fixed;
  top: var(--space-3);
  left: var(--space-3);
  z-index: var(--z-skip-link);
  padding: var(--space-2) var(--space-4);
  background: var(--color-brand);
  color: var(--color-on-brand);
  border-radius: var(--radius-pill);
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: none;
}

/* Label collapses to an icon-only button on small screens but stays
   available to screen readers. */
@media (max-width: 720px) {
  .collapse-on-mobile {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }
}

/* ---------- Scroll reveal (see js/modules/reveal.js) ---------- */

@media (prefers-reduced-motion: no-preference) {
  .js [data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition:
      opacity var(--duration) var(--ease-out),
      transform var(--duration) var(--ease-out);
  }

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