:root {
  color-scheme: light;
  --bg: #f6f7fb;
  --panel: #ffffff;
  --panel-border: #d7dce8;
  --text: #18202b;
  --muted: #5e6a7d;
  --accent: #1b5cff;
  --accent-hover: #164bcc;
  --table-header: #edf2ff;
  --loading-bg: #eef6ff;
  --loading-text: #0f3d75;
  --error-bg: #fff1f0;
  --error-text: #8a1c1c;
  --warning-bg: #fff9e8;
  --warning-text: #6d5400;
  --empty: #777;
  --shadow: 0 18px 45px rgba(24, 32, 43, 0.08);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b1220;
  --panel: #162030;
  --panel-border: #314055;
  --text: #f3f7ff;
  --muted: #c2cede;
  --accent: #79a8ff;
  --accent-hover: #9abfff;
  --table-header: #22324b;
  --loading-bg: #17314e;
  --loading-text: #d7e8ff;
  --error-bg: #47242a;
  --error-text: #ffd5d5;
  --warning-bg: #463a1a;
  --warning-text: #ffe8a3;
  --empty: #c0cad8;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  line-height: 1.5;
  background: linear-gradient(180deg, var(--bg), color-mix(in srgb, var(--bg) 80%, var(--panel) 20%));
  color: var(--text);
  min-height: 100vh;
}

.page-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px 20px 48px;
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  color: var(--text);
  min-height: 100vh;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 16px;
  justify-content: flex-end;
  margin-bottom: 24px;
}

.page-nav {
  display: flex;
  gap: 10px;
  margin-right: auto;
}

.page-link {
  border: 1px solid var(--panel-border);
  background: var(--panel);
  color: var(--text);
  border-radius: 999px;
  padding: 10px 14px;
  text-decoration: none;
}

.page-link.active {
  background: var(--accent);
  border-color: transparent;
  color: #fff;
}

.theme-picker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 0.95rem;
}

.theme-picker select {
  appearance: none;
  border: 1px solid var(--panel-border);
  background: var(--panel);
  color: var(--text);
  border-radius: 999px;
  padding: 10px 14px;
  font-size: 0.95rem;
}

h1,
p {
  margin-top: 0;
}

h1,
h2,
h3,
th,
td,
label,
span,
strong {
  color: var(--text);
}

p {
  color: var(--muted);
}

input, button {
  padding: 10px 12px;
  font-size: 1rem;
}

input,
button,
select {
  border-radius: 12px;
  border: 1px solid var(--panel-border);
}

input {
  background: var(--panel);
  color: var(--text);
  min-width: 220px;
}

input::placeholder {
  color: var(--muted);
}

button {
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}

button:hover {
  background: var(--accent-hover);
}

button:disabled {
  cursor: wait;
  opacity: 0.7;
}

.form-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.inline-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 10px 12px;
  background: var(--panel);
  min-height: 44px;
}

.inline-checkbox input {
  min-width: 0;
  width: auto;
}

.inline-select {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 10px 12px;
  background: var(--panel);
  min-height: 44px;
}

.inline-select select {
  border: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  padding: 0;
}

.view-toggle {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.view-toggle-inline {
  margin: 14px 0 16px;
}

.view-toggle-button {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--panel-border);
}

.view-toggle-button.active {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}

#output {
  margin-top: 20px;
}

#matrix-output {
  margin-top: 20px;
}

.results-table-wrap {
  position: relative;
  overflow: auto;
  max-height: min(72vh, calc(100vh - 240px));
  scrollbar-gutter: stable both-edges;
  border-radius: 16px;
}

table {
  border-collapse: collapse;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  background: var(--panel);
  color: var(--text);
  box-shadow: var(--shadow);
  border-radius: 16px;
}

table th, table td {
  border: 1px solid var(--panel-border);
  padding: 10px;
  text-align: left;
  vertical-align: top;
}

table thead th {
  position: sticky;
  top: 0;
  background: var(--table-header);
  color: var(--text);
  z-index: 10;
  border-bottom: 2px solid var(--panel-border);
}

.sort-button {
  background: transparent;
  border: 0;
  color: inherit;
  font: inherit;
  padding: 0;
}

.sort-button.active {
  color: var(--accent);
}

.matrix-meta {
  display: flex;
  gap: 16px;
  color: var(--muted);
  margin-bottom: 14px;
}

.matrix-table th,
.matrix-table td {
  min-width: 56px;
  text-align: center;
}

.matrix-table .matrix-destination {
  min-width: 180px;
  text-align: left;
}

.matrix-coverage {
  min-width: 84px;
}

.comparison-matrix-table th:not(.matrix-sticky-col),
.comparison-matrix-table td:not(.matrix-sticky-col) {
  min-width: 110px;
}

.matrix-airline {
  min-width: 84px;
  width: 84px;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  white-space: nowrap;
  vertical-align: middle;
  padding: 10px 6px;
}

.matrix-airline-label {
  display: inline;
}

.matrix-sticky-col {
  position: sticky;
  background: var(--panel);
}

.matrix-table thead .matrix-sticky-col {
  background: var(--table-header);
  z-index: 13;
}

.matrix-table tbody .matrix-sticky-col {
  z-index: 6;
}

.matrix-sticky-col-1 {
  left: 0;
}

.matrix-sticky-col-2 {
  left: 180px;
}

.matrix-cell {
  font-size: 1.05rem;
}

.matrix-mark {
  color: var(--accent);
}

.route-results {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.route-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.route-stat-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px;
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.route-map {
  width: 100%;
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.route-map-leaflet {
  height: 520px;
}

.leaflet-container {
  font: inherit;
}

.route-note {
  margin-top: 0;
}

.route-stat-card-direct {
  border-color: color-mix(in srgb, var(--accent) 35%, var(--panel-border) 65%);
}

.route-stat-card-avoided {
  border-color: rgba(229, 107, 93, 0.55);
}

.loading,
.error,
.warning {
  padding: 12px;
  border-radius: 8px;
  margin-top: 12px;
}

.loading {
  background: var(--loading-bg);
  color: var(--loading-text);
}

.error {
  background: var(--error-bg);
  color: var(--error-text);
}

.warning {
  background: var(--warning-bg);
  color: var(--warning-text);
}

.empty-cell {
  color: var(--empty);
  font-style: italic;
}

.filter-panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 14px 16px;
  margin: 16px 0 18px;
}

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

.filter-summary {
  color: var(--muted);
  font-size: 0.92rem;
}

.filter-actions {
  margin-top: 12px;
  align-items: flex-start;
}

.filter-panel-details {
  margin-top: 12px;
}

.filter-panel-details summary {
  cursor: pointer;
  color: var(--text);
  font-weight: 600;
}

.filter-panel-body {
  margin-top: 12px;
}

.filter-range-row {
  margin-top: 12px;
}

.filter-toggle-group {
  margin-top: 12px;
}

.filter-actions label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 180px;
}

.filter-input {
  width: 100%;
}

.filter-threshold {
  min-width: 110px;
}

.filter-quick-button {
  white-space: nowrap;
  padding: 6px 10px;
  font-size: 0.88rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--panel) 70%, var(--table-header) 30%);
  color: var(--text);
  border: 1px solid var(--panel-border);
  width: auto;
  flex: 0 0 auto;
}

.filter-quick-button:hover {
  background: color-mix(in srgb, var(--table-header) 65%, var(--panel) 35%);
}

.filter-range-control {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 220px;
  flex: 1 1 240px;
}

.filter-range {
  width: 100%;
  min-width: 0;
  accent-color: var(--accent);
  padding: 0;
}

.filter-airline-details {
  margin-top: 14px;
  border-top: 1px solid var(--panel-border);
  padding-top: 12px;
}

.filter-chip-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  padding: 8px 12px;
  background: color-mix(in srgb, var(--panel) 80%, var(--table-header) 20%);
  color: var(--text);
  min-height: 40px;
}

.filter-chip-toggle input {
  min-width: 0;
  width: auto;
}

.filter-airline-details summary {
  cursor: pointer;
  color: var(--text);
}

.filter-airline-detail-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.filter-airline-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
  margin-top: 12px;
}

.filter-airline-option {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 10px 12px;
  background: color-mix(in srgb, var(--panel) 82%, var(--table-header) 18%);
}

.filter-airline-option input {
  min-width: 0;
  width: auto;
}

.filter-count {
  margin-left: auto;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 700px) {
  .toolbar {
    justify-content: flex-start;
    flex-direction: column;
    align-items: stretch;
  }

  .theme-picker {
    width: 100%;
    justify-content: space-between;
  }

  .page-nav {
    margin-right: 0;
    width: 100%;
    flex-direction: column;
  }

  .theme-picker select,
  input,
  button {
    width: 100%;
  }

  .inline-checkbox {
    width: 100%;
    justify-content: space-between;
  }

  .inline-select {
    width: 100%;
    justify-content: space-between;
  }

  .route-map-leaflet {
    height: 420px;
  }

  .filter-actions label,
  .filter-range-control,
  .filter-threshold {
    width: 100%;
  }

  .matrix-airline {
    min-width: 72px;
    width: 72px;
  }

  .form-row {
    flex-direction: column;
  }
}