:root {
  --page: #071018;
  --page-soft: #0a1420;
  --surface: #0e1926;
  --surface-raised: #121f2e;
  --surface-muted: #0a1520;
  --field: #0a1520;
  --text: #f3f7fb;
  --text-soft: #a4b0c0;
  --text-muted: #748297;
  --border: #243346;
  --border-soft: #1b2939;
  --accent: #2dd4bf;
  --accent-strong: #14b8a6;
  --cta-end: #0d8db1;
  --accent-soft: rgba(45, 212, 191, 0.12);
  --blue: #38bdf8;
  --blue-soft: rgba(56, 189, 248, 0.12);
  --warning: #fbbf24;
  --warning-soft: rgba(251, 191, 36, 0.1);
  --danger: #fb7185;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.24);
  --radius-xl: 22px;
  --radius-lg: 16px;
  --radius-md: 12px;
}

html[data-theme="light"] {
  --page: #f4f7fb;
  --page-soft: #edf2f7;
  --surface: #ffffff;
  --surface-raised: #ffffff;
  --surface-muted: #f3f6f9;
  --field: #f8fafc;
  --text: #162033;
  --text-soft: #5e6d82;
  --text-muted: #5f6f84;
  --border: #d9e1eb;
  --border-soft: #e6ebf2;
  --accent: #087c72;
  --accent-strong: #087a70;
  --cta-end: #076b87;
  --accent-soft: rgba(13, 148, 136, 0.1);
  --blue: #0284c7;
  --blue-soft: rgba(2, 132, 199, 0.09);
  --warning: #b7791f;
  --warning-soft: rgba(180, 112, 16, 0.09);
  --danger: #e11d48;
  --shadow: 0 20px 55px rgba(37, 54, 78, 0.1);
}

* { box-sizing: border-box; }

html {
  min-width: 320px;
  background: var(--page);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 82% 4%, rgba(45, 212, 191, 0.08), transparent 28rem),
    radial-gradient(circle at 7% 28%, rgba(56, 189, 248, 0.06), transparent 24rem),
    var(--page);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

button,
input,
select { font: inherit; }

button,
a,
input,
select { -webkit-tap-highlight-color: transparent; }

button { color: inherit; }

a { color: inherit; }

svg {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  min-height: 74px;
  padding: 14px clamp(16px, 4vw, 42px);
  display: flex;
  align-items: center;
  gap: 14px;
  border-bottom: 1px solid var(--border-soft);
  background: color-mix(in srgb, var(--page) 88%, transparent);
  backdrop-filter: blur(18px);
}

.back-link,
.icon-button,
.swap-button {
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  transition: border-color 160ms ease, color 160ms ease, transform 160ms ease, background 160ms ease;
}

.back-link {
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  border-radius: 11px;
  color: var(--text-soft);
}

.back-link svg,
.icon-button svg,
.swap-button svg { width: 18px; height: 18px; }

.back-link:hover,
.icon-button:hover,
.swap-button:hover {
  border-color: color-mix(in srgb, var(--accent) 52%, var(--border));
  color: var(--accent);
  transform: translateY(-1px);
}

.brand-lockup { min-width: 0; }

.brand-lockup strong {
  display: block;
  font-family: Outfit, Inter, sans-serif;
  font-size: 16px;
  letter-spacing: -0.02em;
}

.brand-lockup span {
  display: block;
  margin-top: 2px;
  color: var(--text-muted);
  font-size: 10px;
}

.header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 9px;
}

.network-chip,
.confidence-badge {
  padding: 7px 10px;
  border: 1px solid color-mix(in srgb, var(--accent) 24%, var(--border));
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 10px;
  font-weight: 750;
  white-space: nowrap;
}

.icon-button {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  color: var(--text-soft);
}

.sun-icon { display: none; }
html[data-theme="light"] .sun-icon { display: block; }
html[data-theme="light"] .moon-icon { display: none; }

.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: clamp(34px, 6vw, 72px) 0 50px;
}

.hero {
  margin-bottom: 30px;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 44px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-family: Outfit, Inter, sans-serif;
  font-size: clamp(34px, 6vw, 60px);
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.hero-copy {
  max-width: 455px;
  margin: 0 0 4px;
  color: var(--text-soft);
  font-size: 13px;
  line-height: 1.7;
}

.search-panel,
.result-panel,
.map-panel,
.alternatives-panel,
.method-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: color-mix(in srgb, var(--surface) 96%, transparent);
  box-shadow: var(--shadow);
}

.search-panel { padding: clamp(18px, 3vw, 28px); }

.section-heading,
.map-heading {
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.section-heading > div,
.map-heading > div:first-child {
  display: flex;
  align-items: center;
  gap: 12px;
}

.step-number {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border));
  border-radius: 9px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 10px;
  font-weight: 800;
}

.section-heading h2,
.map-heading h2 {
  margin: 0;
  font-family: Outfit, Inter, sans-serif;
  font-size: 17px;
  letter-spacing: -0.02em;
}

.section-heading p,
.map-heading p {
  margin: 3px 0 0;
  color: var(--text-muted);
  font-size: 10px;
}

.data-summary {
  color: var(--text-muted);
  font-size: 10px;
  text-align: right;
}

.search-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 38px minmax(0, 1fr) minmax(230px, 1.1fr);
  gap: 11px;
  align-items: end;
}

.field-group {
  position: relative;
  min-width: 0;
}

.field-group > label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  min-height: 16px;
  margin: 0 0 7px;
  color: var(--text-soft);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.075em;
  text-transform: uppercase;
}

.field-group > label span {
  color: var(--text-muted);
  font-size: 8px;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
}

.input-shell {
  height: 54px;
  padding: 0 13px;
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--field);
  transition: border-color 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.input-shell:focus-within {
  border-color: color-mix(in srgb, var(--accent) 70%, var(--border));
  background: var(--surface-muted);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.input-shell svg {
  width: 17px;
  height: 17px;
  flex: 0 0 auto;
  color: var(--accent);
}

.input-shell input,
.compact-field input,
.compact-field select {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
}

.input-shell input {
  min-width: 0;
  height: 100%;
  font-size: 13px;
  font-weight: 650;
}

.clear-input {
  width: 28px;
  height: 28px;
  padding: 0;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 160ms ease, background 160ms ease;
}

.clear-input[hidden] { display: none; }
.clear-input:hover { background: var(--surface-raised); color: var(--text); }
.clear-input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.input-shell .clear-input svg { width: 14px; height: 14px; color: inherit; }

input::placeholder { color: var(--text-muted); font-weight: 500; }

.swap-button {
  width: 38px;
  height: 38px;
  margin-bottom: 8px;
  border-radius: 10px;
  color: var(--text-muted);
}

.combo-results {
  position: absolute;
  z-index: 30;
  top: calc(100% + 6px);
  left: 0;
  right: auto;
  width: min(520px, calc(100vw - 32px));
  max-height: 340px;
  display: none;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 13px;
  background: var(--surface-raised);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.32);
}

.combo-results.is-open { display: block; }

.combo-label {
  position: sticky;
  z-index: 1;
  top: 0;
  padding: 9px 12px 7px;
  border-bottom: 1px solid var(--border-soft);
  color: var(--text-muted);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  background: var(--surface-raised);
}

#destination-results,
#airline-results { right: 0; left: auto; }

.combo-option {
  width: 100%;
  padding: 11px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  border: 0;
  border-bottom: 1px solid var(--border-soft);
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.combo-option:last-child { border-bottom: 0; }

.combo-option:hover,
.combo-option.is-active {
  background: var(--accent-soft);
}

.option-code {
  min-width: 43px;
  padding: 6px 7px;
  border-radius: 8px;
  background: var(--surface-muted);
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
  text-align: center;
}

.option-copy { min-width: 0; }
.option-copy strong { display: block; overflow: hidden; font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.option-copy small { display: block; margin-top: 3px; overflow: hidden; color: var(--text-muted); font-size: 9px; text-overflow: ellipsis; white-space: nowrap; }
.option-alliance { margin-left: auto; color: var(--text-muted); font-size: 8px; font-weight: 750; white-space: nowrap; }

.combo-empty { padding: 15px; color: var(--text-muted); font-size: 10px; text-align: center; }

.combo-footer {
  position: sticky;
  z-index: 1;
  bottom: 0;
  padding: 9px 12px;
  border-top: 1px solid var(--border-soft);
  background: color-mix(in srgb, var(--surface-raised) 94%, var(--accent) 6%);
  color: var(--text-muted);
  font-size: 8px;
  line-height: 1.4;
}

.trip-options {
  margin-top: 15px;
  padding-top: 15px;
  display: grid;
  grid-template-columns: 180px 180px minmax(180px, .8fr) minmax(220px, 1fr) auto;
  gap: 11px;
  align-items: end;
  border-top: 1px solid var(--border-soft);
}

.compact-field input,
.compact-field select {
  height: 44px;
  padding: 0 11px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--field);
  font-size: 11px;
  font-weight: 650;
}

.compact-field select { appearance: auto; }
.compact-field select:disabled { color: var(--text-muted); cursor: not-allowed; opacity: .75; }

.return-toggle {
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.return-toggle input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.toggle-track {
  width: 38px;
  height: 22px;
  padding: 3px;
  display: block;
  flex: 0 0 auto;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--field);
  transition: background 160ms ease, border-color 160ms ease;
}

.toggle-track span {
  width: 14px;
  height: 14px;
  display: block;
  border-radius: 50%;
  background: var(--text-muted);
  transition: transform 160ms ease, background 160ms ease;
}

.return-toggle input:checked + .toggle-track {
  border-color: var(--accent-strong);
  background: var(--accent-strong);
}

.return-toggle input:checked + .toggle-track span { transform: translateX(16px); background: #fff; }
.return-toggle input:focus-visible + .toggle-track { box-shadow: 0 0 0 3px var(--accent-soft); }
.return-toggle strong { display: block; font-size: 10px; }
.return-toggle small { display: block; margin-top: 2px; color: var(--text-muted); font-size: 8px; }

.rate-helper {
  min-height: 44px;
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-radius: 11px;
  background: var(--surface-muted);
  color: var(--text-soft);
  font-size: 9px;
  line-height: 1.35;
}

.rate-helper strong { color: var(--accent); font-size: 10px; }

.calculate-button {
  min-height: 44px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 0;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--accent-strong), var(--cta-end));
  color: #fff;
  font-size: 10px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(13, 148, 136, 0.2);
  transition: transform 160ms ease, filter 160ms ease;
}

.calculate-button svg { width: 16px; height: 16px; }
.calculate-button:hover { filter: brightness(1.08); transform: translateY(-1px); }
.calculate-button:active { transform: translateY(0); }

.form-error {
  min-height: 0;
  margin: 10px 0 0;
  color: var(--danger);
  font-size: 10px;
}

.form-error:empty { display: none; }

.result-section {
  margin-top: 18px;
  display: grid;
  grid-template-columns: minmax(360px, .84fr) minmax(0, 1.4fr);
  gap: 18px;
  align-items: start;
}

.result-panel,
.map-panel { min-width: 0; overflow: hidden; }
.result-panel { padding: 22px; }
.compact-heading { margin-bottom: 17px; }

.route-notice {
  margin-bottom: 15px;
  padding: 13px 14px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  border: 1px solid color-mix(in srgb, var(--warning) 23%, var(--border));
  border-radius: 13px;
  background: var(--warning-soft);
  color: var(--text-soft);
  font-size: 10px;
  line-height: 1.55;
}

.route-notice.is-direct {
  border-color: color-mix(in srgb, var(--accent) 28%, var(--border));
  background: var(--accent-soft);
}

.notice-icon {
  width: 23px;
  height: 23px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 7px;
  background: color-mix(in srgb, var(--warning) 18%, transparent);
  color: var(--warning);
  font-weight: 800;
}

.route-notice.is-direct .notice-icon { background: var(--accent-soft); color: var(--accent); }
.route-notice strong { display: block; margin-bottom: 2px; color: var(--text); font-size: 11px; }

.metric-grid {
  display: grid;
  grid-template-columns: 1.45fr 1fr .72fr;
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  overflow: hidden;
  background: var(--surface-muted);
}

.primary-metric,
.secondary-metric { min-width: 0; padding: 15px; }
.secondary-metric { border-left: 1px solid var(--border-soft); }
.primary-metric span,
.secondary-metric span { display: block; color: var(--text-muted); font-size: 8px; font-weight: 750; letter-spacing: .07em; text-transform: uppercase; }
.primary-metric strong { display: block; margin-top: 8px; color: var(--accent); font-family: Outfit, Inter, sans-serif; font-size: clamp(28px, 4vw, 40px); line-height: .9; letter-spacing: -.045em; }
.secondary-metric strong { display: block; margin-top: 10px; font-family: Outfit, Inter, sans-serif; font-size: 22px; line-height: 1; letter-spacing: -.03em; }
.primary-metric small,
.secondary-metric small { display: block; margin-top: 6px; overflow: hidden; color: var(--text-muted); font-size: 8px; text-overflow: ellipsis; white-space: nowrap; }

.formula-row {
  margin: 12px 0;
  padding: 10px 12px;
  border: 1px dashed var(--border);
  border-radius: 11px;
  color: var(--text-soft);
  font-size: 9px;
  line-height: 1.45;
}

.formula-row strong { color: var(--text); }

.itinerary-list { display: grid; gap: 8px; }

.leg-card {
  position: relative;
  padding: 12px 13px 12px 18px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  background: var(--surface-muted);
}

.leg-card::before {
  content: "";
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 8px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(var(--blue), var(--accent));
}

.leg-route {
  display: flex;
  align-items: center;
  gap: 8px;
}

.leg-route strong { font-family: Outfit, Inter, sans-serif; font-size: 15px; }
.leg-route svg { width: 14px; height: 14px; color: var(--accent); }
.leg-meta { margin-top: 4px; color: var(--text-muted); font-size: 8px; }
.leg-numbers { text-align: right; }
.leg-numbers strong { display: block; font-size: 11px; }
.leg-numbers small { display: block; margin-top: 4px; color: var(--text-muted); font-size: 8px; }

.empty-result {
  padding: 32px 12px;
  text-align: center;
}

.empty-icon {
  width: 42px;
  height: 42px;
  margin: 0 auto 12px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 13px;
  color: var(--text-muted);
  font-family: Outfit, sans-serif;
  font-size: 18px;
}

.empty-result h3 { margin: 0; font-size: 13px; }
.empty-result p { margin: 8px auto 0; max-width: 350px; color: var(--text-muted); font-size: 10px; line-height: 1.55; }

.map-heading {
  margin: 0;
  padding: 20px 22px 14px;
}

.map-legend { display: flex; align-items: center; gap: 12px; color: var(--text-muted); font-size: 8px; }
.map-legend span { display: flex; align-items: center; gap: 5px; white-space: nowrap; }
.map-legend i { width: 19px; height: 0; display: block; border-top: 2px solid var(--accent); }
.map-legend .legend-dashed { border-top: 1px dashed var(--text-muted); }

.world-map {
  position: relative;
  min-height: 410px;
  border-top: 1px solid var(--border-soft);
  background: var(--surface-muted);
}

.world-map svg { width: 100%; height: auto; display: block; }
.map-loading { position: absolute; inset: 0; display: grid; place-items: center; color: var(--text-muted); font-size: 10px; }

.map-ocean { fill: #08131e; stroke: none; }
html[data-theme="light"] .map-ocean { fill: #eaf2f6; }
.map-grid line { stroke: rgba(134, 158, 181, 0.12); stroke-width: .7; vector-effect: non-scaling-stroke; }
html[data-theme="light"] .map-grid line { stroke: rgba(72, 99, 124, 0.13); }
.map-countries path { fill: #162536; stroke: #26384c; stroke-width: .55; vector-effect: non-scaling-stroke; }
html[data-theme="light"] .map-countries path { fill: #d3dfe7; stroke: #bdcbd6; }
.map-direct-path { fill: none; stroke: var(--text-muted); stroke-width: 1.35; stroke-dasharray: 5 6; opacity: .55; vector-effect: non-scaling-stroke; }
.map-route-halo { fill: none; stroke: rgba(45, 212, 191, .2); stroke-width: 8; filter: url(#mileage-route-glow); vector-effect: non-scaling-stroke; }
.map-route-path { fill: none; stroke: url(#mileage-route-gradient); stroke-width: 3; vector-effect: non-scaling-stroke; }
.map-route-path--unconfirmed { stroke: var(--text-muted); stroke-dasharray: 7 6; opacity: .7; }
.map-dot { fill: var(--accent); stroke: var(--page); stroke-width: 3; vector-effect: non-scaling-stroke; }
.map-dot--endpoint { fill: var(--blue); }
.map-label { fill: var(--text); stroke: none; font-family: Inter, sans-serif; font-size: 11px; font-weight: 800; paint-order: stroke; stroke: var(--page); stroke-width: 4px; stroke-linejoin: round; }

.alternatives-panel { margin-top: 18px; padding: 22px; }
.alternative-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 9px; }
.alternative-button {
  padding: 13px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-muted);
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}
.alternative-button:hover { border-color: color-mix(in srgb, var(--accent) 55%, var(--border)); transform: translateY(-1px); }
.alternative-button.is-selected {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
  background: var(--accent-soft);
  cursor: default;
}
.alternative-button:disabled { opacity: 1; }
.alternative-button strong { display: block; font-size: 10px; }
.alternative-button small { display: block; margin-top: 3px; color: var(--text-muted); font-size: 8px; }
.alternative-action {
  padding: 5px 7px;
  border-radius: 7px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 8px;
  font-weight: 800;
  text-transform: uppercase;
}

.method-panel { margin-top: 18px; overflow: hidden; box-shadow: none; }
.method-panel summary { padding: 17px 20px; display: flex; align-items: center; justify-content: space-between; gap: 18px; cursor: pointer; list-style: none; }
.method-panel summary::-webkit-details-marker { display: none; }
.method-panel summary span:first-child { font-size: 11px; font-weight: 750; }
.method-panel summary span:last-child { color: var(--text-muted); font-size: 9px; }
.method-panel[open] summary { border-bottom: 1px solid var(--border-soft); }
.method-grid { padding: 20px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.method-grid strong { font-size: 10px; }
.method-grid p { margin: 6px 0 0; color: var(--text-muted); font-size: 9px; line-height: 1.6; }
.source-note { margin: 0; padding: 0 20px 20px; color: var(--text-muted); font-size: 8px; line-height: 1.6; }
.source-note a { color: var(--accent); }

.site-footer {
  padding: 24px clamp(16px, 4vw, 42px) 34px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--border-soft);
  color: var(--text-muted);
  font-size: 9px;
}

@media (max-width: 980px) {
  .search-grid { grid-template-columns: minmax(0, 1fr) 38px minmax(0, 1fr); }
  .airline-field { grid-column: 1 / -1; }
  .trip-options { grid-template-columns: 1fr 1fr minmax(170px, 1fr) minmax(200px, 1.2fr); }
  .calculate-button { grid-column: 1 / -1; }
  .result-section { grid-template-columns: 1fr; }
  .world-map { min-height: 0; }
}

@media (max-width: 680px) {
  .network-chip { display: none; }
  .site-header { min-height: 66px; }
  .brand-lockup span { display: none; }
  .page-shell { width: min(100% - 22px, 1180px); padding-top: 34px; }
  .hero { align-items: flex-start; flex-direction: column; gap: 18px; }
  .hero h1 { font-size: 38px; }
  .hero-copy { font-size: 11px; }
  .section-heading { align-items: flex-start; }
  .data-summary { display: none; }
  .search-grid { grid-template-columns: 1fr; }
  .swap-button { width: 100%; height: 28px; margin: -2px 0; transform: rotate(90deg); border: 0; background: transparent; }
  .swap-button:hover { transform: rotate(90deg); }
  .airline-field { grid-column: auto; }
  .combo-results,
  #destination-results,
  #airline-results { right: 0; left: 0; width: 100%; max-height: 320px; }
  .trip-options { grid-template-columns: 1fr 1fr; }
  .return-toggle,
  .rate-helper,
  .calculate-button { grid-column: 1 / -1; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .primary-metric { grid-column: 1 / -1; border-bottom: 1px solid var(--border-soft); }
  .secondary-metric:first-of-type { border-left: 0; }
  .map-heading { align-items: flex-start; flex-direction: column; }
  .map-legend { width: 100%; justify-content: flex-start; }
  .alternative-list,
  .method-grid { grid-template-columns: 1fr; }
  .method-panel summary { align-items: flex-start; flex-direction: column; gap: 4px; }
  .site-footer { flex-direction: column; gap: 5px; }
}

@media (max-width: 400px) {
  .hero h1 { font-size: 34px; }
  .search-panel,
  .result-panel,
  .alternatives-panel { padding: 17px; }
  .metric-grid { grid-template-columns: 1fr; }
  .primary-metric { grid-column: auto; }
  .secondary-metric { border-top: 1px solid var(--border-soft); border-left: 0; }
  .trip-options { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

/* Guided calculator refresh */
[hidden] { display: none !important; }

button:focus-visible,
input:focus-visible,
select:focus-visible,
summary:focus-visible,
a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 48%, transparent);
  outline-offset: 3px;
}

.page-shell {
  width: min(1200px, calc(100% - 36px));
  padding-top: clamp(34px, 5vw, 62px);
}

.hero {
  margin-bottom: 26px;
  gap: clamp(28px, 6vw, 72px);
}

.hero h1 {
  max-width: 720px;
  font-size: clamp(42px, 5.6vw, 68px);
}

.hero-copy {
  max-width: 430px;
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.65;
}

.search-panel { padding: clamp(20px, 2.8vw, 32px); }
.search-panel > .section-heading { margin-bottom: 20px; }

.section-heading h2,
.map-heading h2 { font-size: 19px; }

.section-heading p,
.map-heading p,
.data-summary { font-size: 11px; }

.form-flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 14px;
}

.form-step {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--border-soft);
  border-radius: 17px;
  background: color-mix(in srgb, var(--surface-muted) 88%, transparent);
}

.form-step:first-child { grid-column: 1 / -1; }

.form-step-heading {
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.form-step-heading > span {
  width: 27px;
  height: 27px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 9px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
}

.form-step-heading h3 {
  margin: 0;
  font-size: 13px;
  letter-spacing: -.01em;
}

.form-step-heading p {
  margin: 2px 0 0;
  color: var(--text-muted);
  font-size: 10px;
}

.route-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 44px minmax(0, 1fr);
  gap: 12px;
  align-items: end;
}

.airline-program-grid { display: grid; gap: 12px; }

.fare-grid {
  display: grid;
  grid-template-columns: minmax(0, .86fr) minmax(0, 1.14fr);
  gap: 12px;
  align-items: stretch;
}

.fare-grid:has(.cabin-field[hidden]) .booking-field { grid-column: 1 / -1; }

.field-group > label {
  min-height: 17px;
  margin-bottom: 8px;
  font-size: 11px;
}

.field-group > label span { font-size: 9px; }

.input-shell {
  height: 58px;
  padding: 0 14px;
  border-radius: 13px;
}

.input-shell input { font-size: 14px; }
.clear-input { width: 36px; height: 36px; }
.swap-button { width: 44px; height: 44px; margin-bottom: 7px; }

.combo-results {
  width: min(560px, calc(100vw - 36px));
  max-height: 390px;
  border-radius: 15px;
}

.combo-option {
  min-height: 60px;
  padding: 12px 14px;
  gap: 12px;
}

.option-code { min-width: 48px; padding: 7px 8px; font-size: 12px; }
.option-copy strong { font-size: 12px; }
.option-copy small { margin-top: 4px; font-size: 10px; }
.option-alliance { font-size: 9px; }
.combo-label,
.combo-footer { padding: 10px 14px; font-size: 9px; }
.combo-empty { font-size: 11px; }

.program-card {
  min-height: 78px;
  padding: 12px;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) auto;
  align-items: center;
  gap: 11px;
  border: 1px solid color-mix(in srgb, var(--accent) 24%, var(--border));
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent-soft), color-mix(in srgb, var(--surface) 94%, transparent));
}

.program-icon {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: color-mix(in srgb, var(--accent) 16%, var(--surface));
  color: var(--accent);
  font-size: 16px;
}

.program-copy { min-width: 0; }
.program-copy label {
  display: block;
  color: var(--text-muted);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.program-copy select {
  width: 100%;
  height: 30px;
  margin: 1px 0 0;
  padding: 0 24px 0 0;
  overflow: hidden;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font-size: 13px;
  font-weight: 750;
  text-overflow: ellipsis;
}

.program-copy select:disabled { color: var(--text-soft); opacity: 1; }
.program-copy small { display: block; overflow: hidden; color: var(--text-muted); font-size: 9px; text-overflow: ellipsis; white-space: nowrap; }

.program-status {
  padding: 6px 8px;
  border-radius: 999px;
  background: var(--surface-muted);
  color: var(--text-muted);
  font-size: 8px;
  font-weight: 800;
  white-space: nowrap;
}

.program-card[data-status="verified"] .program-status {
  background: var(--accent-soft);
  color: var(--accent);
}

.program-card[data-status="none"] .program-status {
  background: var(--warning-soft);
  color: var(--warning);
}

.compact-field select {
  height: 50px;
  padding: 0 12px;
  border-radius: 12px;
  font-size: 12px;
}

.manual-rate-shell {
  height: 50px;
  padding: 0 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--field);
}

.manual-rate-shell:focus-within {
  border-color: color-mix(in srgb, var(--accent) 70%, var(--border));
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.manual-rate-shell input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font-size: 12px;
  font-weight: 700;
}

.manual-rate-shell > span { color: var(--text-muted); font-size: 11px; font-weight: 750; }
.manual-rate-field:not([hidden]) ~ .rate-helper { grid-column: 1 / -1; }

.return-toggle {
  min-height: 54px;
  padding: 8px 10px;
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  background: var(--field);
}

.return-toggle strong { font-size: 11px; }
.return-toggle small { font-size: 9px; }

.rate-helper {
  min-height: 54px;
  padding: 9px 11px;
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  font-size: 10px;
}

.rate-helper strong { margin-bottom: 2px; font-size: 11px; }

.submit-row {
  margin-top: 18px;
  padding-top: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--border-soft);
}

.form-error { margin: 0; font-size: 11px; }

.calculate-button {
  min-width: 205px;
  min-height: 52px;
  padding: 0 20px;
  border-radius: 13px;
  font-size: 12px;
}

.calculate-button:disabled {
  background: var(--surface-muted);
  color: var(--text-muted);
  box-shadow: none;
  cursor: not-allowed;
  filter: none;
  transform: none;
}

.result-section {
  margin-top: 20px;
  grid-template-columns: minmax(0, .98fr) minmax(0, 1.18fr);
  gap: 18px;
}

.result-panel { padding: 24px; }
.route-notice { padding: 14px; font-size: 11px; }
.route-notice strong { font-size: 12px; }

.result-panel .alternatives-panel {
  margin: 0 0 15px;
  padding: 14px;
  border-color: var(--border-soft);
  border-radius: 14px;
  background: var(--surface-muted);
  box-shadow: none;
}

.choice-heading {
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.choice-heading strong { display: block; font-size: 11px; }
.choice-heading small { display: block; margin-top: 2px; color: var(--text-muted); font-size: 9px; }
.choice-heading > span { color: var(--accent); font-size: 9px; font-weight: 800; text-transform: uppercase; }
.alternative-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.alternative-button { min-height: 58px; }
.alternative-button strong { font-size: 11px; }
.alternative-button small { font-size: 9px; }

.primary-metric span,
.secondary-metric span { font-size: 9px; }
.primary-metric small,
.secondary-metric small { font-size: 9px; }
.formula-row { padding: 12px 13px; font-size: 10px; }
.formula-row a { color: var(--accent); font-weight: 700; }
.leg-card { padding: 13px 14px 13px 19px; }
.leg-route strong { font-size: 16px; }
.leg-meta,
.leg-numbers small { font-size: 9px; }
.leg-numbers strong { font-size: 11px; }
.world-map { min-height: 390px; }

.method-panel summary span:first-child { font-size: 12px; }
.method-panel summary span:last-child { font-size: 10px; }
.method-grid strong { font-size: 11px; }
.method-grid p { font-size: 10px; }
.source-note,
.site-footer { font-size: 9px; }

@media (max-width: 900px) {
  .form-flow { grid-template-columns: 1fr; }
  .form-step:first-child { grid-column: auto; }
  .result-section { grid-template-columns: 1fr; }
  .world-map { min-height: 0; }
}

@media (max-width: 680px) {
  .page-shell { width: min(100% - 22px, 1200px); padding-top: 32px; }
  .hero { gap: 16px; }
  .hero h1 { font-size: clamp(36px, 11vw, 48px); }
  .hero-copy { font-size: 12px; }
  .form-step { padding: 15px; }
  .route-grid { grid-template-columns: 1fr; gap: 10px; }
  .route-grid .swap-button {
    width: 100%;
    height: 32px;
    margin: -2px 0;
    border: 0;
    background: transparent;
    transform: rotate(90deg);
  }
  .route-grid .swap-button:hover { transform: rotate(90deg); }
  .fare-grid { grid-template-columns: 1fr 1fr; }
  .program-card { grid-template-columns: 34px minmax(0, 1fr); }
  .program-icon { width: 34px; height: 34px; }
  .program-status { grid-column: 2; justify-self: start; margin-top: -3px; }
  .program-copy small { white-space: normal; }
  .submit-row { align-items: stretch; flex-direction: column; }
  .calculate-button { width: 100%; }
  .result-panel { padding: 19px; }
  .alternative-list { grid-template-columns: 1fr; }
}

@media (max-width: 440px) {
  .fare-grid { grid-template-columns: 1fr; }
  .fare-grid:has(.cabin-field[hidden]) .booking-field { grid-column: auto; }
  .metric-grid { grid-template-columns: 1fr; }
  .primary-metric { grid-column: auto; }
  .secondary-metric { border-top: 1px solid var(--border-soft); border-left: 0; }
}