/* USCalcHub Site-Wide Unified Search Modal Styles */
.uscalchub-search-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 99999;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 4rem 1rem 2rem 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}

.uscalchub-search-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.uscalchub-search-modal {
  width: 100%;
  max-width: 680px;
  background: #ffffff;
  border-radius: 1.25rem;
  border: 1px solid #e2e8f0;
  box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.25), 0 0 0 1px rgba(15, 23, 42, 0.05);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  max-height: 82vh;
  transform: translateY(-8px) scale(0.98);
  transition: transform 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.uscalchub-search-backdrop.active .uscalchub-search-modal {
  transform: translateY(0) scale(1);
}

/* Header & Input */
.uscalchub-search-header {
  display: flex;
  align-items: center;
  padding: 0.875rem 1.25rem;
  border-bottom: 1px solid #f1f5f9;
  background: #ffffff;
  position: relative;
}

.uscalchub-search-icon {
  width: 1.25rem;
  height: 1.25rem;
  color: #94a3b8;
  margin-right: 0.75rem;
  flex-shrink: 0;
}

.uscalchub-search-input {
  width: 100%;
  border: none;
  outline: none;
  background: transparent;
  font-size: 1rem;
  color: #0f172a;
  font-weight: 500;
  padding: 0.25rem 0;
}

.uscalchub-search-input::placeholder {
  color: #94a3b8;
  font-weight: 400;
}

.uscalchub-search-close-kbd {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.6875rem;
  font-weight: 600;
  color: #64748b;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  border-radius: 0.375rem;
  padding: 0.2rem 0.45rem;
  line-height: 1;
  letter-spacing: 0.02em;
}

/* Filter Chips Bar */
.uscalchub-search-tabs {
  display: flex;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  background: #f8fafc;
  border-bottom: 1px solid #f1f5f9;
  overflow-x: auto;
  scrollbar-width: none;
}

.uscalchub-search-tabs::-webkit-scrollbar {
  display: none;
}

.uscalchub-search-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.3125rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #475569;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.uscalchub-search-tab:hover {
  border-color: #cbd5e1;
  color: #1e293b;
}

.uscalchub-search-tab.active {
  background: #2563eb;
  color: #ffffff;
  border-color: #2563eb;
  box-shadow: 0 1px 2px rgba(37, 99, 235, 0.2);
}

.uscalchub-search-tab .tab-count {
  font-size: 0.6875rem;
  opacity: 0.8;
}

/* Results List */
.uscalchub-search-results {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 0.75rem;
  overscroll-behavior: contain;
}

/* Section Divider / Priority Group Header */
.uscalchub-search-group-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #64748b;
  padding: 0.5rem 0.625rem 0.25rem 0.625rem;
}

.uscalchub-search-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 0.75rem 0.875rem;
  border-radius: 0.75rem;
  text-decoration: none;
  color: inherit;
  transition: all 0.12s ease;
  border: 1px solid transparent;
  margin-bottom: 0.25rem;
  cursor: pointer;
}

.uscalchub-search-item:hover,
.uscalchub-search-item.selected {
  background: #f1f5f9;
  border-color: #e2e8f0;
}

.uscalchub-search-item.selected {
  background: #eff6ff;
  border-color: #bfdbfe;
}

.uscalchub-item-content {
  flex: 1 1 auto;
  min-width: 0;
  padding-right: 0.75rem;
}

.uscalchub-item-title-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
  flex-wrap: wrap;
}

.uscalchub-item-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: #0f172a;
  line-height: 1.35;
}

.uscalchub-search-item.selected .uscalchub-item-title {
  color: #1d4ed8;
}

.uscalchub-item-desc {
  font-size: 0.75rem;
  color: #64748b;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Badges */
.uscalchub-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border-width: 1px;
  border-style: solid;
  line-height: 1.2;
}

.uscalchub-badge-calculator {
  background: #eff6ff;
  color: #1d4ed8;
  border-color: #bfdbfe;
}

.uscalchub-badge-tool {
  background: #f5f3ff;
  color: #6d28d9;
  border-color: #ddd6fe;
}

.uscalchub-badge-article {
  background: #ecfdf5;
  color: #047857;
  border-color: #a7f3d0;
}

.uscalchub-item-arrow {
  color: #94a3b8;
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
  margin-top: 0.25rem;
  transition: transform 0.15s ease, color 0.15s ease;
}

.uscalchub-search-item:hover .uscalchub-item-arrow,
.uscalchub-search-item.selected .uscalchub-item-arrow {
  color: #2563eb;
  transform: translateX(2px);
}

/* Empty State */
.uscalchub-search-empty {
  text-align: center;
  padding: 3rem 1.5rem;
  color: #64748b;
}

.uscalchub-search-empty svg {
  width: 2.5rem;
  height: 2.5rem;
  margin: 0 auto 0.75rem auto;
  color: #cbd5e1;
}

.uscalchub-search-empty-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 0.375rem;
}

.uscalchub-search-empty-desc {
  font-size: 0.8125rem;
  color: #64748b;
  max-width: 380px;
  margin: 0 auto 1.25rem auto;
  line-height: 1.4;
}

.uscalchub-search-suggestions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}

.uscalchub-search-suggest-chip {
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  color: #334155;
  padding: 0.3125rem 0.625rem;
  border-radius: 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}

.uscalchub-search-suggest-chip:hover {
  background: #e2e8f0;
  color: #0f172a;
  border-color: #cbd5e1;
}

/* Footer */
.uscalchub-search-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.625rem 1.25rem;
  background: #f8fafc;
  border-top: 1px solid #f1f5f9;
  font-size: 0.6875rem;
  color: #64748b;
}

.uscalchub-search-shortcuts {
  display: flex;
  gap: 0.875rem;
  align-items: center;
}

.uscalchub-search-shortcuts span {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.uscalchub-search-shortcuts kbd {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 0.25rem;
  padding: 0.1rem 0.3rem;
  font-size: 0.625rem;
  font-weight: 600;
  color: #475569;
}

/* Trigger Button Styles (for embedding into any navbar) */
.uscalchub-search-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 9999px;
  padding: 0.375rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: #64748b;
  cursor: pointer;
  transition: all 0.15s ease;
}

.uscalchub-search-trigger:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
  color: #1e293b;
}

.uscalchub-search-trigger svg {
  width: 0.875rem;
  height: 0.875rem;
  color: #64748b;
}

.uscalchub-search-trigger kbd {
  font-size: 0.625rem;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 0.25rem;
  padding: 0.05rem 0.3rem;
  line-height: 1;
  color: #475569;
}

@media (max-width: 640px) {
  .uscalchub-search-backdrop {
    padding: 1rem 0.75rem;
    align-items: flex-start;
  }
  .uscalchub-search-modal {
    max-height: 90vh;
  }
  .uscalchub-search-shortcuts {
    display: none;
  }
}