/*
 * Base — reset, typography defaults, landmarks, focus, motion baseline.
 */

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

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4, h5, h6 {
  color: var(--color-heading);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 var(--space-4);
}

h1 { font-size: var(--display-lg); }
h2 { font-size: var(--display-md); }
h3 { font-size: var(--display-sm); font-weight: 600; }
h4 { font-size: var(--text-xl); font-weight: 600; }

@media (min-width: 1024px) {
  h1 { font-size: var(--display-xl); }
}

p { margin: 0 0 var(--space-4); }
ul, ol { margin: 0 0 var(--space-4); padding-left: 1.25em; }

a {
  color: var(--color-primary);
  text-decoration-thickness: from-font;
}
a:hover { color: var(--color-primary-hover); }

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

table { border-collapse: collapse; width: 100%; }

/* ---------------------------------------------------------------
 * Focus visibility — applies everywhere, on every surface.
 * ----------------------------------------------------------- */
a, button, input, textarea, select, summary, [tabindex] {
  outline-offset: 2px;
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  transition: outline-color var(--motion-instant) var(--ease-standard);
}

/* Elements on the dark app sidebar get a lighter ring (see app.css/admin.css
   scoping via .app-sidebar / .admin-sidebar ancestors). */
.on-dark :focus-visible,
.app-sidebar :focus-visible,
.admin-sidebar :focus-visible {
  outline-color: var(--color-focus-on-dark);
}

/* ---------------------------------------------------------------
 * Skip link
 * ----------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100px;
  z-index: 1000;
  background: var(--color-heading);
  color: #fff;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: top var(--motion-fast) var(--ease-standard);
}

.skip-link:focus {
  top: var(--space-4);
}

/* ---------------------------------------------------------------
 * Layout utilities
 * ----------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.container-wide {
  width: 100%;
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

@media (min-width: 768px) {
  .container, .container-narrow, .container-wide { padding-inline: var(--space-8); }
}

@media (min-width: 1024px) {
  .container, .container-narrow, .container-wide { padding-inline: var(--space-12); }
}

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

/* ---------------------------------------------------------------
 * Scroll-reveal contract (docs/motion.md §10, §17) — content is
 * ALWAYS visible by default; JS opts elements into a transient
 * pre-reveal state only immediately before they enter the viewport.
 * ----------------------------------------------------------- */
.reveal {
  opacity: 1;
  transform: none;
}

.is-reveal-ready .reveal[data-reveal-pending] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--motion-slower) var(--ease-out-soft),
              transform var(--motion-slower) var(--ease-out-soft);
}

@media (prefers-reduced-motion: reduce) {
  .is-reveal-ready .reveal[data-reveal-pending] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}