:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --surface-soft: #f9fafb;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #2563eb;
  --accent-soft: #dbeafe;
  --good: #065f46;
  --warn: #7c2d12;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
}

.hidden { display: none !important; }

* {
  box-sizing: border-box;
}

.icon {
  width: 18px;
  height: 18px;
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

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

body {
  margin: 0;
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  background:
    radial-gradient(circle at 20% -10%, #f0f4ff 0%, rgba(240, 244, 255, 0) 45%),
    linear-gradient(180deg, #f8fafc 0%, #f4f5f7 40%);
  color: var(--text);
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.site-header {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  height: 58px;
  display: flex;
  align-items: center;
}

.brand {
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-logo {
  width: 32px;
  height: 32px;
}

.page {
  padding: 24px 0 60px;
}

.tagline-wrap h1 {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 24px;
  color: #111827;
}

/* Top Level Tabs (Flights/Stays/AI) */
.top-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
}

.top-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.top-tab.active {
  background: #111827;
  color: #fff;
}

.top-tab:not(.active):hover {
  background: var(--border);
  color: var(--text);
}

.top-tab.disabled {
  opacity: 0.5;
  cursor: default;
}

.badge {
  font-size: 10px;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--border);
  color: var(--muted);
  margin-left: 4px;
  font-weight: 800;
}

.badge.beta {
  background: #fef3c7;
  color: #92400e;
}

/* Search Shell */
.search-shell {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 20px 50px rgba(17, 24, 39, 0.08);
  display: grid;
  gap: 20px;
}

.trip-tabs {
  display: inline-flex;
  gap: 8px;
  padding: 4px;
  background: var(--surface-soft);
  border-radius: 999px;
  width: fit-content;
}

.trip-tab {
  border: 0;
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.trip-tab.active {
  background: #fff;
  color: var(--text);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.field-grid {
  display: grid;
  gap: 12px;
}

.route-grid {
  display: grid;
  gap: 12px;
  align-items: end;
}

[data-mode="one_way"] .route-grid {
  grid-template-columns: 1fr auto 1fr 1fr;
}

[data-mode="return"] .route-grid {
  grid-template-columns: 1.2fr auto 1.2fr 1fr 1fr;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.field-label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
}

.field input,
.popover-trigger,
.select-wrap select {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0 16px;
  font: inherit;
  background: #fff;
  color: var(--text);
  text-align: left;
  cursor: text;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.02);
}

.popover-trigger {
  cursor: pointer;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236b7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E") no-repeat right 12px center;
  background-size: 16px;
  padding-right: 40px;
}

/* Select Wrap for Modern Look */
.select-wrap {
  position: relative;
}

.select-wrap select {
  appearance: none;
  cursor: pointer;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236b7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M8 9l4 4 4-4'%3E%3C/path%3E%3C/svg%3E") no-repeat right 12px center;
  background-size: 16px;
  padding-right: 40px;
}

.field input:focus,
.popover-trigger:focus,
.select-wrap select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.swap-btn {
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--muted);
  transition: all 0.2s ease;
}

.swap-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

/* Popover UI */
.popover-field {
  position: relative;
}

.popover {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: 280px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0,0,0,0.12);
  z-index: 100;
  padding: 16px;
}

.popover.hidden { display: none; }

.popover-content {
  display: grid;
  gap: 16px;
}

.popover-tabs {
  display: flex;
  background: var(--surface-soft);
  padding: 3px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.popover-tab {
  flex: 1;
  border: 0;
  background: transparent;
  padding: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  border-radius: 4px;
  cursor: pointer;
}

.popover-tab.active {
  background: #fff;
  color: var(--text);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.popover-pane { display: none; }
.popover-pane.active { display: block; }

.slider-inputs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 16px;
}

.slider-inputs input {
  width: 60px;
  min-height: 36px;
  padding: 0 8px;
  text-align: center;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
}

/* Autocomplete */
.autocomplete { position: relative; }
.autocomplete-menu {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
  max-height: 300px;
  overflow-y: auto;
  z-index: 110;
}
.autocomplete-item {
  padding: 12px 16px;
  cursor: pointer;
  font-size: 14px;
}
.autocomplete-item:hover, .autocomplete-item.active {
  background: var(--surface-soft);
}
.autocomplete-item.active {
  background: var(--accent-soft);
  color: #1e3a8a;
}

/* Multi-city */
.multi-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.multi-legs {
  display: grid;
  gap: 16px;
}

.multi-row {
  background: var(--surface-soft);
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.multi-row-inner {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr auto 1fr 1fr 1fr auto;
  align-items: end;
}

.multi-row-inner .remove-leg-btn {
  grid-column: 6;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--muted);
  transition: all 0.2s ease;
}

.multi-row-inner .remove-leg-btn:hover {
  border-color: #ef4444;
  color: #ef4444;
  background: #fee2e2;
}

/* Advanced Filters */
.advanced-wrap {
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.advanced-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: 0;
  font-weight: 600;
  font-size: 14px;
  color: var(--muted);
  cursor: pointer;
  padding: 0;
}

.advanced-arrow { transition: transform 0.2s ease; }
.advanced-toggle.expanded .advanced-arrow { transform: rotate(180deg); }

.advanced-content {
  margin-top: 16px;
  background: var(--surface-soft);
  padding: 20px;
  border-radius: var(--radius-md);
}

.advanced-grid {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.inline-field {
  flex-direction: row;
  align-items: center;
}

.inline-field input[type="checkbox"] {
  width: 20px;
  height: 20px;
  min-height: auto;
}

/* Results */
.results-wrap { margin-top: 32px; }

.results-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

#resultHeading { font-size: 24px; font-weight: 700; margin: 0; }
#resultSummary { color: var(--muted); margin: 4px 0 0; }

.sort-strip {
  display: flex;
  gap: 8px;
  padding: 4px;
  background: var(--surface-soft);
  border-radius: 999px;
}

.sort-btn {
  border: 0;
  background: transparent;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 999px;
  cursor: pointer;
  color: var(--muted);
}

.sort-btn.active {
  background: #fff;
  color: var(--text);
  box-shadow: 0 2px 6px rgba(0,0,0,0.06);
}

/* Result Cards */
.results-list {
  display: grid;
  gap: 16px;
}

.result-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.result-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.result-right {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.price {
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}

.search-actions {
  display: flex;
  justify-content: flex-end;
}

.primary-btn {
  background: #111827;
  color: #fff;
  border: 0;
  border-radius: 999px;
  padding: 12px 32px;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.2s ease;
}

.primary-btn:hover { background: #000; }
.primary-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.hidden { display: none !important; }

/* Modern Switch Component */
.switch-field {
  display: flex;
  align-items: center;
  gap: 12px;
}

.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  transition: .3s;
  border-radius: 24px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .3s;
  border-radius: 50%;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

input:checked + .slider {
  background-color: var(--accent);
}

input:checked + .slider:before {
  transform: translateX(20px);
}

/* Sm Button */
.sm-btn {
  min-height: 36px !important;
  padding: 0 12px !important;
  font-size: 13px !important;
  display: flex;
  align-items: center;
  gap: 6px;
}

.multi-row-label {
  font-size: 12px;
  color: var(--muted);
  font-weight: 600;
  margin-top: 4px;
}

.search-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 8px;
}

.quick-filters {
  display: flex;
  gap: 8px;
}

.filter-trigger {
  border: 1px solid var(--border);
  background: var(--surface-soft);
  color: var(--text);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-trigger:hover {
  background: var(--border);
}

/* Counter Input */
.counter-input {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 4px;
  width: fit-content;
}

.count-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #fff;
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
}

.count-btn:hover {
  background: var(--surface-soft);
  border-color: var(--accent);
}

.counter-input input {
  width: 30px;
  border: 0;
  background: transparent;
  text-align: center;
  font-weight: 700;
  padding: 0;
  min-height: auto;
  box-shadow: none;
}

/* Pills & Autocomplete UI */
.autocomplete {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 6px 10px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  cursor: text;
  min-height: 44px;
  transition: all 0.2s ease;
  width: 100%;
  box-sizing: border-box;
}

.autocomplete:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.autocomplete input {
  flex: 1;
  min-width: 60px;
  border: 0 !important;
  box-shadow: none !important;
  padding: 4px 6px !important;
  margin: 0 !important;
  min-height: 28px !important;
  background: transparent !important;
  font-size: 14px;
  color: var(--text);
  outline: none !important;
}

.autocomplete-menu {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  z-index: 1000;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
  max-height: 300px;
  overflow-y: auto;
}

.autocomplete-item {
  padding: 12px 16px;
  cursor: pointer;
  transition: background 0.2s;
  border-bottom: 1px solid var(--surface-soft);
}

.autocomplete-item:last-child { border-bottom: 0; }
.autocomplete-item:hover { background: var(--surface-soft); }

.pills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.pill {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-soft);
  color: var(--accent);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid rgba(37, 99, 235, 0.1);
}

.pill-remove {
  border: 0;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.6;
}

.pill-remove:hover {
  opacity: 1;
}

.pill-remove svg {
  width: 14px;
  height: 14px;
}

/* Result Badge */
.result-source-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 8px;
  background: var(--surface-soft);
  color: var(--muted);
  border: 1px solid var(--border);
  vertical-align: middle;
}

.source-kiwi { background: #dcfce7; color: #166534; border-color: #bbf7d0; }
.source-meta { background: #e0f2fe; color: #075985; border-color: #bae6fd; }

/* Show More Pagination */
.show-more-container {
  display: flex;
  justify-content: center;
  padding: 32px 0 64px;
}

.btn-show-more {
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 32px;
  border-radius: var(--radius-md);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.btn-show-more:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.1);
}

.btn-show-more:active {
  transform: translateY(0);
}

@media (max-width: 900px) {
  .route-grid {
    grid-template-columns: 1fr;
  }
  .swap-btn { margin: 0 auto; transform: rotate(90deg); }
  .search-header-row {
    flex-direction: column;
    align-items: flex-start;
  }
}