.btn {
  min-height: 44px;
  min-width: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  padding: 0 var(--space-4);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  text-decoration: none;
  cursor: pointer;
  transition: background-color 180ms ease-out, border-color 180ms ease-out, color 180ms ease-out;
}

.btn-primary {
  background: var(--brand-navy);
  color: var(--text-on-brand);
}

.btn-primary:hover {
  background: var(--brand-ink);
}

.btn-secondary {
  background: transparent;
  border-color: var(--brand-navy);
  color: var(--brand-navy);
}

.btn-secondary:hover {
  background: var(--info-soft);
}

.btn-tertiary {
  background: transparent;
  color: var(--brand-ink);
  border-color: var(--border-soft);
}

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

.btn-icon {
  width: 44px;
  padding: 0;
}

.btn[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
}

.loading-skeleton {
  pointer-events: none;
}

.skeleton-line {
  height: 12px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--bg-secondary), var(--surface-primary), var(--bg-secondary));
  background-size: 180% 100%;
  animation: shimmer 1.2s ease-in-out infinite;
  margin-bottom: var(--space-2);
}

.w-30 {
  width: 30%;
}

.w-60 {
  width: 60%;
}

.w-80 {
  width: 80%;
}

.chip {
  min-height: 36px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-soft);
  background: var(--surface-primary);
  color: var(--text-secondary);
  padding: 0 var(--space-3);
  font-size: 0.8125rem;
  cursor: pointer;
}

.chip-active {
  border-color: var(--brand-navy);
  color: var(--brand-navy);
  background: var(--info-soft);
}

.nav-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.nav-link.active {
  border-bottom-color: var(--brand-navy);
  color: var(--brand-navy);
  font-weight: 600;
}

.menu-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-sm);
  padding: 0 var(--space-3);
  color: var(--text-primary);
  text-decoration: none;
}

.meta-line {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-soft);
  padding: 0 var(--space-2);
  font-size: 0.75rem;
  font-weight: 600;
}

.status-reviewed {
  background: var(--success-soft);
  color: var(--success-text);
}

.status-reviewing {
  background: var(--warning-soft);
  color: var(--warning-text);
}

.status-update-needed {
  background: var(--danger-soft);
  color: var(--danger-text);
}

.segmented-control {
  display: inline-flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-pill);
  padding: var(--space-1);
  background: var(--surface-primary);
}

.segmented-option {
  min-height: 36px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  padding: 0 var(--space-3);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
}

.segmented-option.segmented-active {
  background: var(--info-soft);
  color: var(--brand-navy);
  border-color: var(--brand-navy);
}

.sticky-language {
  width: 100%;
  justify-content: center;
  background: rgba(247, 241, 230, 0.95);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
  box-shadow: var(--shadow-1);
}

.inline-alert {
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  padding: var(--space-4);
  background: var(--surface-primary);
}

.inline-alert-error {
  background: var(--danger-soft);
  color: var(--danger-text);
}

.empty-state {
  text-align: left;
}

.toast-notice {
  position: fixed;
  left: 50%;
  bottom: var(--space-6);
  transform: translate(-50%, 16px);
  opacity: 0;
  transition: transform 180ms ease-out, opacity 180ms ease-out;
  background: var(--brand-ink);
  color: var(--text-on-brand);
  border-radius: var(--radius-pill);
  padding: var(--space-2) var(--space-4);
  z-index: 600;
}

.toast-notice.open {
  opacity: 1;
  transform: translate(-50%, 0);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(19, 38, 63, 0.48);
  display: none;
  z-index: 500;
}

.modal-backdrop.open {
  display: block;
}

.language-modal {
  position: fixed;
  inset: auto 0 0 0;
  background: var(--surface-elevated);
  border-top-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
  box-shadow: var(--shadow-2);
  max-height: 85vh;
  overflow: hidden;
  transform: translateY(100%);
  transition: transform 240ms ease-out;
  z-index: 550;
}

.language-modal.open {
  transform: translateY(0);
}

.language-modal-header {
  padding: var(--space-4);
  border-bottom: 1px solid var(--border-soft);
}

.language-modal-body {
  padding: var(--space-4);
  overflow: auto;
  max-height: calc(85vh - 130px);
}

.language-options {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.language-option {
  display: grid;
  gap: var(--space-1);
  width: 100%;
  text-align: left;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  background: var(--surface-primary);
  padding: var(--space-3);
  color: var(--text-primary);
}

.language-option.active {
  border-color: var(--brand-navy);
  background: var(--info-soft);
}

.language-preview {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  background: var(--surface-reading);
  padding: var(--space-3);
  max-height: 180px;
  overflow: auto;
}

.language-modal-footer {
  padding: var(--space-4);
  border-top: 1px solid var(--border-soft);
  display: flex;
  gap: var(--space-2);
}

@media (min-width: 768px) {
  .language-modal {
    inset: 50% auto auto 50%;
    transform: translate(-50%, -45%);
    border-radius: var(--radius-lg);
    width: min(640px, calc(100% - 2rem));
    max-height: min(80vh, 760px);
  }

  .language-modal.open {
    transform: translate(-50%, -50%);
  }

  .language-modal-body {
    max-height: calc(min(80vh, 760px) - 180px);
  }
}

@keyframes shimmer {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: -180% 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .skeleton-line {
    animation: none;
  }
}