/* ==========================================================================
   AIRH Base Styles — Typography, Body, Scrollbar, Selection
   ========================================================================== */

/* ---------------------------------------------------------------------------
   Body
   --------------------------------------------------------------------------- */
body {
  background-color: var(--color-bg-app);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  letter-spacing: var(--tracking-normal);
  overflow-x: hidden;
}

/* ---------------------------------------------------------------------------
   Typography — Headings
   --------------------------------------------------------------------------- */
h1,
.h1 {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

h2,
.h2 {
  font-size: var(--text-2xl);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

h3,
.h3 {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
  color: var(--color-text-primary);
}

h4,
.h4 {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
  color: var(--color-text-primary);
}

h5,
.h5 {
  font-size: var(--text-md);
  font-weight: var(--weight-medium);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
}

h6,
.h6 {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-normal);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

/* ---------------------------------------------------------------------------
   Paragraphs and Inline
   --------------------------------------------------------------------------- */
p {
  color: var(--color-text-primary);
  line-height: var(--leading-relaxed);
}

p + p {
  margin-top: var(--space-4);
}

small,
.text-sm {
  font-size: var(--text-sm);
}

.text-xs {
  font-size: var(--text-xs);
}

strong,
b {
  font-weight: var(--weight-semibold);
}

em,
i {
  font-style: italic;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--color-bg-tertiary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

pre {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  background-color: var(--color-bg-tertiary);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  overflow-x: auto;
}

pre code {
  background: none;
  padding: 0;
}

/* ---------------------------------------------------------------------------
   Links
   --------------------------------------------------------------------------- */
a {
  color: var(--color-text-link);
  text-decoration: none;
  transition: var(--transition-colors);
}

a:hover {
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:active {
  opacity: 0.85;
}

/* ---------------------------------------------------------------------------
   Selection
   --------------------------------------------------------------------------- */
::selection {
  background-color: var(--color-accent-muted);
  color: var(--color-text-primary);
}

::-moz-selection {
  background-color: var(--color-accent-muted);
  color: var(--color-text-primary);
}

/* ---------------------------------------------------------------------------
   Scrollbar Styling
   --------------------------------------------------------------------------- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-scrollbar-track);
}

::-webkit-scrollbar-thumb {
  background: var(--color-scrollbar-thumb);
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-scrollbar-thumb-hover);
  border: 2px solid transparent;
  background-clip: padding-box;
}

/* Firefox scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-scrollbar-thumb) var(--color-scrollbar-track);
}

/* ---------------------------------------------------------------------------
   Dividers
   --------------------------------------------------------------------------- */
hr {
  border: none;
  height: 1px;
  background-color: var(--color-divider);
  margin: var(--space-6) 0;
}

/* ---------------------------------------------------------------------------
   Misc
   --------------------------------------------------------------------------- */
::placeholder {
  color: var(--color-text-placeholder);
  opacity: 1;
}

mark {
  background-color: var(--color-warning-bg);
  color: var(--color-text-primary);
  padding: 1px 4px;
  border-radius: var(--radius-sm);
}

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

blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-4);
  color: var(--color-text-secondary);
  font-style: italic;
}