/* ==========================================================================
   Base — resets, element defaults. Uses tokens.css. No component classes.
   ========================================================================== */

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

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-family-base);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--color-text-primary);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--space-sm) 0;
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  color: var(--color-text-primary);
}

h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }

@media (max-width: 640px) {
  h1 { font-size: var(--fs-2xl); }
  h2 { font-size: var(--fs-xl); }
  h3 { font-size: var(--fs-md); }
}

p {
  margin: 0 0 var(--space-md) 0;
  color: var(--color-text-secondary);
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--color-primary-hover);
}

ul, ol {
  padding-left: 1.25em;
  color: var(--color-text-secondary);
}

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

button {
  font-family: inherit;
}

label {
  display: inline-block;
  font-weight: var(--fw-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2xs);
}

input,
select,
textarea {
  font-family: inherit;
  font-size: var(--fs-base);
  color: var(--color-text-primary);
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  padding: var(--space-xs) var(--space-sm);
  width: 100%;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible,
button:focus-visible,
a:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

fieldset {
  border: none;
  padding: 0;
  margin: 0;
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-lg) 0;
}

/* Skip link — hidden until keyboard focus */
.skip-link {
  position: absolute;
  left: var(--space-md);
  top: -48px;
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm);
  z-index: 1000;
  text-decoration: none;
  font-weight: var(--fw-semibold);
  transition: top var(--motion-normal) var(--motion-ease);
}

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

::selection {
  background: var(--color-primary-soft);
  color: var(--color-primary-active);
}