/* ========================================
   BASE ELEMENT STYLES
   ======================================== */

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-background-primary);
  color: var(--color-text-primary);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1 0 auto;
}

/* Selection styling */
::selection {
  background-color: var(--color-primary-light);
  color: white;
}

::-moz-selection {
  background-color: var(--color-primary-light);
  color: white;
}

/* Focus styles for accessibility */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--border-radius-sm);
}

/* Skip to content link */
.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: var(--spacing-2) var(--spacing-4);
  text-decoration: none;
  border-radius: var(--border-radius-md);
  z-index: var(--z-index-toast);
  transition: top var(--transition-duration-fast) var(--transition-timing-out);
}

.skip-to-content:focus {
  top: var(--spacing-2);
  left: var(--spacing-2);
  outline: none;
  box-shadow: var(--shadow-lg);
}

/* Horizontal rule */
hr {
  border: none;
  border-top: var(--border-width-thin) solid var(--color-border-light);
  margin: var(--spacing-8) 0;
}

/* Blockquote */
blockquote {
  margin: var(--spacing-6) 0;
  padding: var(--spacing-4) var(--spacing-6);
  border-left: var(--border-width-thick) solid var(--color-primary);
  background-color: var(--color-background-secondary);
  border-radius: 0 var(--border-radius-lg) var(--border-radius-lg) 0;
  font-style: italic;
  color: var(--color-text-primary);
}

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

/* Code */
code {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  padding: var(--spacing-1) var(--spacing-2);
  background-color: var(--color-background-tertiary);
  border-radius: var(--border-radius-sm);
  color: var(--color-primary);
}

pre {
  background-color: var(--color-neutral-900);
  color: var(--color-neutral-100);
  padding: var(--spacing-4);
  border-radius: var(--border-radius-lg);
  overflow-x: auto;
  margin: var(--spacing-4) 0;
}

pre code {
  background-color: transparent;
  color: inherit;
  padding: 0;
  font-size: var(--font-size-sm);
}

/* Address */
address {
  font-style: normal;
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
}

/* Abbreviation */
abbr[title] {
  text-decoration: underline dotted;
  cursor: help;
}

/* Mark */
mark {
  background-color: var(--color-secondary-light);
  color: var(--color-text-primary);
  padding: 0 var(--spacing-1);
  border-radius: var(--border-radius-sm);
}

/* Subscript and superscript */
sub,
sup {
  font-size: var(--font-size-xs);
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sup {
  top: -0.5em;
}

sub {
  bottom: -0.25em;
}