/**
 * Reusable Components
 * Shared UI components for Cohiru Lab.
 */

/* ===== SVG Icons ===== */
.icon {
  display: inline-block;
  vertical-align: middle;
  fill: currentColor;
  stroke: currentColor;
}

.icon--sm {
  width: 16px;
  height: 16px;
}

.icon--md {
  width: 20px;
  height: 20px;
}

.icon--lg {
  width: 24px;
  height: 24px;
}

.icon--xl {
  width: 32px;
  height: 32px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  text-decoration: none;
  cursor: pointer;
  min-height: 44px;
}

.btn--primary {
  background-color: var(--color-accent-primary);
  color: #ffffff;
}

.btn--primary:hover {
  background-color: var(--color-accent-primary-hover);
  box-shadow: var(--shadow-glow-primary);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-accent-secondary);
  border: 1px solid var(--color-accent-secondary);
}

.btn--secondary:hover {
  background-color: var(--color-accent-secondary);
  color: #ffffff;
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-text-primary);
}

.btn--ghost:hover {
  background-color: var(--color-bg-tertiary);
}

/* ===== Navigation Cards ===== */
.nav-card {
  display: block;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-base);
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-sm);
}

.nav-card:hover {
  border-color: var(--color-accent-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  color: inherit;
}

.nav-card--secondary:hover {
  border-color: var(--color-accent-secondary);
}

.nav-card--disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.nav-card--disabled:hover {
  transform: none;
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav-card__icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-md);
  display: block;
}

.nav-card__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-xs);
  color: var(--color-text-primary);
}

.nav-card__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ===== Badge ===== */
.badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge--wip {
  background-color: var(--color-text-muted);
  color: #ffffff;
}

.badge--new {
  background-color: var(--color-accent-primary);
  color: #ffffff;
}

.badge--closed {
  background-color: var(--status-closed);
  color: #ffffff;
}

/* ===== Social Links ===== */
.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  transition: all var(--transition-fast);
}

.social-link:hover {
  background-color: var(--color-accent-primary);
  color: #ffffff;
  transform: scale(1.1);
}

.social-link svg {
  width: 20px;
  height: 20px;
}

/* ===== Section Title ===== */
.section-title {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-title__heading {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-sm);
}

.section-title__subheading {
  color: var(--color-text-secondary);
}

/* ===== Hamburger Menu ===== */
.hamburger-btn {
  position: fixed;
  top: var(--space-md);
  right: var(--space-md);
  z-index: var(--z-fixed);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.hamburger-btn:hover {
  background: var(--color-bg-tertiary);
  border-color: var(--color-accent-primary);
}

.hamburger-btn__line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text-primary);
  transition: all var(--transition-base);
  margin: 2px 0;
}

.hamburger-btn.is-active .hamburger-btn__line:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.hamburger-btn.is-active .hamburger-btn__line:nth-child(2) {
  opacity: 0;
}

.hamburger-btn.is-active .hamburger-btn__line:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ===== Sitemap Panel ===== */
.sitemap-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: var(--z-modal);
}

.sitemap-overlay.is-active {
  opacity: 1;
  visibility: visible;
}

.sitemap-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 320px;
  max-width: 85vw;
  height: 100vh;
  background: var(--color-bg-secondary);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  z-index: calc(var(--z-modal) + 1);
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.sitemap-panel.is-active {
  transform: translateX(0);
}

.sitemap-panel__header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.sitemap-panel__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.sitemap-panel__nav {
  padding: var(--space-md);
}

.sitemap-panel__section {
  margin-bottom: var(--space-lg);
}

.sitemap-panel__section-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
  padding: 0 var(--space-sm);
}

.sitemap-panel__link {
  display: block;
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text-primary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.sitemap-panel__link:hover {
  background: var(--color-bg-tertiary);
  color: var(--color-accent-primary);
}

.sitemap-panel__link.is-current {
  background: var(--color-accent-primary);
  color: #ffffff;
}

/* ===== Unified Footer ===== */
.site-footer {
  padding: var(--space-2xl) 0 var(--space-xl);
  background: var(--color-bg-tertiary);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xl);
}

.site-footer__logo {
  max-width: 120px;
  height: auto;
}

.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md) var(--space-xl);
}

.site-footer__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.site-footer__link:hover {
  color: var(--color-accent-primary);
}

.site-footer__social {
  display: flex;
  gap: var(--space-md);
}

.site-footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  transition: all var(--transition-fast);
}

.site-footer__social-link:hover {
  background: var(--color-accent-primary);
  color: #ffffff;
  transform: scale(1.1);
}

.site-footer__social-link svg {
  width: 18px;
  height: 18px;
}

.site-footer__copyright {
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  text-align: center;
}

/* ===== Footer Variants ===== */

/* ReDICE theme variant */
.site-footer--redice {
  background: var(--redice-bg-secondary);
  border-top-color: var(--redice-border);
}

.site-footer--redice .site-footer__link {
  color: var(--redice-text-muted);
}

.site-footer--redice .site-footer__link:hover {
  color: var(--redice-accent-red);
}

.site-footer--redice .site-footer__social-link {
  background: var(--redice-bg);
  color: var(--redice-text-muted);
}

.site-footer--redice .site-footer__social-link:hover {
  background: var(--redice-accent-red);
  color: #ffffff;
}

/* Minimal variant (for sub-pages) */
.site-footer--minimal {
  padding: var(--space-xl) 0;
}

.site-footer--minimal .site-footer__nav,
.site-footer--minimal .site-footer__social {
  display: none;
}

/* ===== Language Toggle (with hamburger) ===== */
.lang-toggle-fixed {
  position: fixed;
  top: var(--space-md);
  right: calc(var(--space-md) + 52px);
  z-index: var(--z-fixed);
  padding: var(--space-xs) var(--space-md);
  border: 2px solid var(--color-accent-secondary);
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.9);
  color: var(--color-accent-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  transition: all var(--transition-fast);
  backdrop-filter: blur(8px);
}

.lang-toggle-fixed:hover {
  background: var(--color-accent-secondary);
  color: #ffffff;
}

/* ===== Category Section ===== */
.category-section {
  margin-bottom: var(--space-2xl);
}

.category-section__header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.category-section__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.category-section__line {
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

/* ===== Links Section ===== */
.links-section {
  padding: var(--space-2xl) 0;
  background: var(--color-bg-tertiary);
}

.links-section__header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.links-section__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.links-section__line {
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.link-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-base);
}

.link-card:hover {
  border-color: var(--color-accent-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.link-card__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-bg-tertiary);
}

.link-card__icon svg {
  width: 24px;
  height: 24px;
}

.link-card__content {
  flex: 1;
}

.link-card__name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.link-card__description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ===== External Link Modal ===== */
.external-link-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-tooltip);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.external-link-modal.is-active {
  opacity: 1;
  visibility: visible;
}

.external-link-modal__overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.external-link-modal__content {
  position: relative;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  max-width: 400px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-lg);
  transform: scale(0.95);
  transition: transform 0.2s ease;
}

.external-link-modal.is-active .external-link-modal__content {
  transform: scale(1);
}

.external-link-modal__icon {
  color: var(--color-accent-secondary);
  margin-bottom: var(--space-md);
}

.external-link-modal__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.external-link-modal__message {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-sm);
}

.external-link-modal__url {
  color: var(--color-accent-secondary);
  font-size: var(--font-size-sm);
  word-break: break-all;
  padding: var(--space-sm);
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
}

.external-link-modal__buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
}

.external-link-modal__btn {
  padding: var(--space-sm) var(--space-xl);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  min-width: 100px;
}

.external-link-modal__btn--cancel {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
}

.external-link-modal__btn--cancel:hover {
  background: var(--color-border);
}

.external-link-modal__btn--confirm {
  background: var(--color-accent-primary);
  color: #ffffff;
}

.external-link-modal__btn--confirm:hover {
  background: var(--color-accent-primary-hover);
}