/* ============================================================
   base.css
   Reset + element defaults. Loaded after tokens.css + fonts.css.
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-base);
  color: var(--text-primary);
  background: var(--surface-page);
  font-weight: 400;
}

h1, h2, h3, h4, h5, h6, p, ul, ol, figure, blockquote {
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  color: var(--text-primary);
}

ul, ol {
  list-style: none;
}

a {
  color: var(--text-link);
  text-decoration: none;
}
a:hover { color: var(--text-link-hover); text-decoration: underline; }

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

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

input, select, textarea {
  font: inherit;
  color: inherit;
}

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

/* Focus — never remove, only restyle */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  background: var(--surface-inverse);
  color: var(--text-inverse);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  z-index: 1000;
  transition: top var(--duration-base) var(--ease-out);
}
.skip-link:focus-visible {
  top: var(--space-4);
  outline: 2px solid var(--white);
  outline-offset: 2px;
}

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

/* Reduced motion */
@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;
  }
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter-desktop);
}
@media (max-width: 1023px) {
  .container { padding-inline: var(--gutter-tablet); }
}
@media (max-width: 639px) {
  .container { padding-inline: var(--gutter-mobile); }
}

/* Visually hidden — for screen-reader-only text */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}