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

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 64rem;
  margin-inline: auto;
  padding-inline: var(--space-6);
  padding-block: var(--space-8);
}

.site-header {
  margin-block-end: var(--space-8);
}

.site-header h1 {
  font-size: clamp(1.75rem, 1.4rem + 1.5vw, 2.5rem);
  margin-block-end: var(--space-2);
}

.site-header p {
  color: var(--color-text-muted);
  max-width: 40rem;
}

.component-section {
  margin-block-end: var(--space-8);
  padding-block-end: var(--space-8);
  border-block-end: 1px solid var(--color-border);
}

.component-section:last-of-type {
  border-block-end: none;
}

.component-section h2 {
  font-size: 1.25rem;
  margin-block-end: var(--space-1);
}

.component-section > p {
  color: var(--color-text-muted);
  margin-block-end: var(--space-4);
  max-width: 40rem;
}

.example-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: flex-start;
}

.example-row + .example-row {
  margin-block-start: var(--space-3);
}

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

/* One focus-visible rule every interactive component below relies on,
   so keyboard-focus styling stays consistent instead of re-declared per component. */
:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
}

/* Hides an element visually while keeping it in the accessibility tree and the tab
   order — used for the modal's real checkbox input (base.css since it's a generic utility,
   not modal-specific). */
.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;
}

.site-footer {
  margin-block-start: var(--space-8);
  padding-block-start: var(--space-6);
  border-block-start: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.9rem;
}