/**
 * CITED Health — Utility Classes
 *
 * Lightweight utility classes for typography, links, highlights,
 * badges, transitions, and scroll reveal animations.
 * All values reference var(--cited-*) tokens from cited-tokens.css.
 * Zero Django dependency — usable in any HTML/CSS context.
 */

/* ============================================================
   Typography Utilities
   ============================================================ */

.cited-font-serif {
  font-family: var(--cited-font-serif);
}

.cited-font-mono {
  font-family: var(--cited-font-mono);
}

/* ============================================================
   Highlight Utilities
   ============================================================ */

.cited-highlight-dosage {
  display: inline;
  background-color: var(--cited-bg-muted);
  font-family: var(--cited-font-mono);
  font-size: var(--cited-text-sm);
  border-radius: var(--cited-radius-sm);
  padding: 1px var(--cited-space-xs);
}

.dark .cited-highlight-dosage {
  background-color: var(--cited-border);
}

.cited-highlight-warning {
  display: inline;
  background-color: #FEE2E2;
  color: #991B1B;
  border-radius: var(--cited-radius-sm);
  padding: 1px var(--cited-space-xs);
}

.dark .cited-highlight-warning {
  background-color: rgba(239, 68, 68, 0.2);
  color: #FCA5A5;
}

.cited-highlight-keyword {
  display: inline;
  background-color: #FEF9C3;
  border-radius: var(--cited-radius-sm);
  padding: 1px var(--cited-space-xs);
}

.dark .cited-highlight-keyword {
  background-color: rgba(250, 204, 21, 0.2);
  color: #FDE047;
}

/* ============================================================
   Badge Utilities
   ============================================================ */

.cited-badge-new {
  display: inline-flex;
  align-items: center;
  font-size: 10px;
  font-weight: var(--cited-font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px var(--cited-space-sm);
  border-radius: var(--cited-radius-full);
  background-color: var(--cited-grade-b);
  color: #FFFFFF;
  line-height: 1.4;
}

.cited-badge-updated {
  display: inline-flex;
  align-items: center;
  font-size: 10px;
  font-weight: var(--cited-font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px var(--cited-space-sm);
  border-radius: var(--cited-radius-full);
  background-color: var(--cited-color-positive);
  color: #FFFFFF;
  line-height: 1.4;
}

/* ============================================================
   Link Utilities
   ============================================================ */

.cited-link-internal {
  color: var(--cited-grade-b);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--cited-duration-micro) var(--cited-easing-default);
}

.cited-link-internal:hover {
  color: var(--cited-grade-b-text);
}

.dark .cited-link-internal {
  color: var(--cited-grade-b-dark-text);
}

.dark .cited-link-internal:hover {
  color: var(--cited-grade-b);
}

.cited-link-external {
  color: var(--cited-grade-b);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--cited-duration-micro) var(--cited-easing-default);
}

.cited-link-external::after {
  content: "\2197";
  margin-left: 2px;
  font-size: 0.85em;
}

.cited-link-external:hover {
  color: var(--cited-grade-b-text);
}

.dark .cited-link-external {
  color: var(--cited-grade-b-dark-text);
}

.dark .cited-link-external:hover {
  color: var(--cited-grade-b);
}

.cited-link-doi {
  font-family: var(--cited-font-mono);
  font-size: var(--cited-text-sm);
  color: var(--cited-grade-b);
  text-decoration: none;
  opacity: 0.8;
  transition: opacity var(--cited-duration-micro) var(--cited-easing-default);
}

.cited-link-doi::after {
  content: "\2197";
  margin-left: 2px;
  font-size: 0.85em;
}

.cited-link-doi:hover {
  opacity: 1;
}

.dark .cited-link-doi {
  color: var(--cited-grade-b-dark-text);
}

.cited-link-affiliate {
  color: var(--cited-color-iherb);
  font-weight: var(--cited-font-bold);
  text-decoration: none;
  transition: opacity var(--cited-duration-micro) var(--cited-easing-default);
}

.cited-link-affiliate::after {
  content: "\2197";
  margin-left: 2px;
  font-size: 0.85em;
}

.cited-link-affiliate:hover {
  opacity: 0.8;
}

.cited-link-nav {
  color: var(--cited-text-secondary);
  text-decoration: none;
  font-weight: var(--cited-font-medium);
  transition: color var(--cited-duration-micro) var(--cited-easing-default);
}

.cited-link-nav:hover {
  color: var(--cited-text-primary);
}

.cited-link-glossary {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px dashed var(--cited-text-muted);
  cursor: help;
  transition: border-color var(--cited-duration-micro) var(--cited-easing-default);
}

.cited-link-glossary:hover {
  border-bottom-color: var(--cited-text-secondary);
}

/* ============================================================
   Transition Utilities
   ============================================================ */

.cited-transition-micro {
  transition: all var(--cited-duration-micro) var(--cited-easing-default);
}

.cited-transition-default {
  transition: all var(--cited-duration-default) var(--cited-easing-default);
}

.cited-transition-expand {
  transition: all var(--cited-duration-expand) var(--cited-easing-expand);
}

/* ============================================================
   Scroll Reveal
   Initial hidden state + revealed state with transition.
   Applied via JS IntersectionObserver (cited-interactions.js).
   ============================================================ */

.cited-reveal-init {
  opacity: 0;
  transform: translateY(8px);
}

.cited-revealed {
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--cited-duration-expand) var(--cited-easing-default),
              transform var(--cited-duration-expand) var(--cited-easing-default);
}