:root {
  --primary: #1a73e8;
  --primary-hover: #1557b0;
  --bg: #ffffff;
  --card-bg: #ffffff;
  --border: #e0e0e0;
  --text-primary: #202124;
  --text-secondary: #5f6368;
  --price-color: #188038;
  --font: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.15);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg);
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 24px;
}

.header-inner .tagline {
  flex: 1;
  margin: 0;
  min-width: 180px;
}

.header-auth {
  display: none;
  align-items: center;
  gap: 10px;
}

.header-auth-visible {
  display: flex !important;
}

.btn-header {
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-header.btn-primary {
  background: var(--primary);
  color: white;
}

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

.btn-header.btn-secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--text-primary);
}

.btn-header.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.user-menu-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  border-radius: 8px;
  cursor: pointer;
  background: transparent;
  border: 1px solid var(--border);
  font: inherit;
  color: var(--text-primary);
}

.user-menu-trigger:hover {
  border-color: var(--primary);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.user-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 4px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow-hover);
  min-width: 160px;
  padding: 8px 0;
  z-index: 100;
}

.user-dropdown a {
  display: block;
  padding: 10px 16px;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.9rem;
}

.user-dropdown a:hover {
  background: #f5f5f5;
}

#user-menu {
  position: relative;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: inherit;
}

.logo-img {
  height: 36px;
  width: auto;
  display: block;
  object-fit: contain;
}

.logo-text {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.02em;
}

.tagline {
  margin: 0.25rem 0 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 400;
}

main.container {
  padding-top: 28px;
  padding-bottom: 48px;
}

.origin-selector {
  margin-bottom: 20px;
}

.origin-selector label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.origin-selector select {
  font: inherit;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text-primary);
  min-width: 180px;
  cursor: pointer;
  transition: border-color 0.2s;
}

.origin-selector select:hover,
.origin-selector select:focus {
  border-color: var(--primary);
  outline: none;
}

.results-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 16px 24px;
  margin-bottom: 16px;
}

.deals-heading {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.stats .stat strong {
  color: var(--text-primary);
}

.controls-row {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 20px;
}

.date-picker,
.controls-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
}

.date-picker label,
.controls-bar label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.date-picker select,
.controls-bar select {
  font: inherit;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text-primary);
  cursor: pointer;
}

.date-picker select:hover,
.date-picker select:focus,
.controls-bar select:hover,
.controls-bar select:focus {
  border-color: var(--primary);
  outline: none;
}

.filter-section {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
}

.filter-section input[type="number"] {
  width: 90px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
}

.filter-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.filter-checkbox input {
  cursor: pointer;
}

.filter-count {
  font-size: 0.8rem;
  color: var(--primary);
  margin-left: 4px;
}

.clear-filters-btn {
  padding: 8px 14px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}

.clear-filters-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* Mobile filter drawer */
.mobile-filter-btn {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  font: inherit;
  font-weight: 500;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  cursor: pointer;
}

.mobile-filter-btn:hover {
  border-color: var(--primary);
}

.filter-drawer {
  display: none;
  flex-direction: column;
  gap: 16px;
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
}

.filter-drawer.open {
  display: flex !important;
}

.filter-drawer .drawer-close {
  align-self: flex-end;
  padding: 6px 12px;
  font-size: 0.875rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
}

@media (max-width: 767px) {
  .controls-bar-wrapper {
    display: none !important;
  }

  .mobile-filter-btn {
    display: flex;
  }

  .filter-drawer {
    margin-top: 12px;
  }
}

@media (min-width: 768px) {
  .mobile-filter-btn {
    display: none !important;
  }

  .filter-drawer {
    display: none !important;
  }

  .controls-bar-wrapper {
    display: block;
  }
}

/* Loading skeleton */
.skeleton-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 8px;
}

.skeleton-card {
  background: linear-gradient(90deg, #f0f0f0 25%, #e8e8e8 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius);
  height: 350px;
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.origin-badge {
  display: inline-block;
  background: #667eea;
  color: white;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.search-section {
  margin-bottom: 28px;
}

.search-input {
  width: 100%;
  max-width: 560px;
  font: inherit;
  font-size: 1rem;
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text-primary);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-input::placeholder {
  color: var(--text-secondary);
  opacity: 0.8;
}

.search-input:hover {
  border-color: #b0b0b0;
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.2);
}

.loading,
.error,
.no-results {
  padding: 24px 0;
  text-align: center;
  color: var(--text-secondary);
  font-size: 1rem;
}

.error {
  color: #c5221f;
}

.hidden {
  display: none !important;
}

.deals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 8px;
}

@media (min-width: 768px) {
  .deals-grid,
  .skeleton-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1200px) {
  .deals-grid,
  .skeleton-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.deal-card {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  color: inherit;
  cursor: default;
}

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

picture {
  display: block;
  line-height: 0;
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  object-position: center;
  background: #f1f3f4;
}

.card-content {
  padding: 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.deal-card .city-name {
  margin: 0 0 4px;
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
}

.deal-card .airport-code {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 400;
  color: var(--text-secondary);
}

.deal-card .flight-info {
  margin: 0 0 4px;
  font-size: 14px;
  color: var(--text-secondary);
}

.deal-card .flight-dates {
  margin: 0 0 12px;
  font-size: 14px;
  color: var(--text-secondary);
}

.deal-card .price {
  margin: auto 0 0;
  font-size: 28px;
  font-weight: 700;
  color: var(--price-color);
  line-height: 1.2;
}

.deal-card .price-note {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-secondary);
  margin-top: 2px;
}

.card-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.card-actions .btn-primary {
  display: block;
  padding: 12px 16px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  transition: background 0.2s;
}

.card-actions .btn-primary:hover {
  background: var(--primary-hover);
}

.card-actions .btn-secondary {
  display: block;
  padding: 10px 16px;
  background: white;
  color: var(--primary);
  border: 2px solid var(--primary);
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  transition: background 0.2s;
}

.card-actions .btn-secondary:hover {
  background: #f0f4ff;
}

.card-actions .btn-return {
  padding: 10px 16px;
  background: transparent;
  color: var(--text-secondary);
  border: 1px dashed var(--border);
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}

.card-actions .btn-return:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.card-actions .btn-alert {
  padding: 10px 16px;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}

.card-actions .btn-alert:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.modal-small {
  max-width: 420px;
}

.modal-medium {
  max-width: 520px;
}

.alerts-list {
  max-height: 320px;
  overflow-y: auto;
}

.alerts-loading,
.alerts-empty {
  color: var(--text-secondary);
  margin: 0;
  padding: 16px 0;
}

.alert-item,
.saved-flight-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 10px;
  background: #fafafa;
}

.alert-item:last-child,
.saved-flight-item:last-child {
  margin-bottom: 0;
}

.alert-item-info,
.saved-flight-info {
  flex: 1;
  min-width: 0;
}

.alert-item-route,
.saved-flight-route {
  font-weight: 600;
  font-size: 1rem;
}

.alert-item-meta,
.saved-flight-meta {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.saved-flight-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.btn-delete {
  padding: 8px 14px;
  font-size: 0.85rem;
  background: transparent;
  border: 1px solid #d32f2f;
  color: #d32f2f;
  border-radius: 8px;
  cursor: pointer;
  flex-shrink: 0;
}

.btn-delete:hover {
  background: #ffebee;
}

.btn-save-flight {
  padding: 6px 12px;
  font-size: 0.8rem;
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
  border-radius: 6px;
  cursor: pointer;
}

.btn-save-flight:hover,
.btn-save-flight.saved {
  background: var(--primary);
  color: white;
}

.modal-subtitle {
  margin: 0 0 20px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 8px;
}

.input-with-prefix {
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.input-with-prefix .prefix {
  padding: 10px 14px;
  background: #f5f5f5;
  color: var(--text-secondary);
  font-weight: 500;
}

.input-with-prefix input {
  flex: 1;
  padding: 10px 14px;
  border: none;
  font: inherit;
}

.form-group small {
  display: block;
  margin-top: 6px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.btn-full {
  width: 100%;
  padding: 12px;
}

.alert-note {
  margin: 16px 0 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Return flight modal */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow-y: auto;
}

.modal.hidden {
  display: none !important;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  cursor: pointer;
}

.modal-content {
  position: relative;
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  max-width: 560px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 24px;
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  padding: 0;
  font-size: 24px;
  line-height: 1;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 6px;
  transition: background 0.2s, color 0.2s;
}

.modal-close:hover {
  background: var(--border);
  color: var(--text-primary);
}

.modal-title {
  margin: 0 0 20px;
  font-size: 1.5rem;
}

.trip-summary {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 16px;
  background: #f8f9fa;
  border-radius: 8px;
  margin-bottom: 20px;
}

.outbound-summary,
.return-summary {
  flex: 1;
}

.trip-summary h3 {
  margin: 0 0 8px;
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.trip-summary p {
  margin: 4px 0;
  font-size: 0.9rem;
}

.trip-summary .price-large {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--price-color);
}

.trip-arrow {
  font-size: 1.5rem;
  color: var(--primary);
}

.return-options-section h3 {
  margin: 0 0 12px;
  font-size: 1rem;
}

.return-options {
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.return-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.2s;
}

.return-option:last-child {
  border-bottom: none;
}

.return-option:hover {
  background: #f5f5f5;
}

.return-option.selected {
  background: rgba(26, 115, 232, 0.1);
  border-left: 3px solid var(--primary);
}

.return-option .option-date {
  font-weight: 500;
}

.return-option .option-details {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.return-option .option-price {
  font-weight: 700;
  color: var(--price-color);
}

.modal-total {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.total-label {
  margin: 0 0 4px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.modal-total .total-price {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 16px;
}

.modal-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.modal-actions .btn-primary {
  padding: 12px 20px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.modal-actions .btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
}

.modal-actions .btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.modal-actions .btn-secondary {
  padding: 12px 20px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.2s;
}

.modal-actions .btn-secondary:hover {
  border-color: var(--primary);
}

.loading-return,
.no-return-options {
  padding: 16px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}