frontend/styles.css

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

:root {
  --bg: #ffffff;
  --ink: #0a0a0a;
  --ink-2: #2a2a2a;
  --muted: #6b6b6b;
  --muted-2: #9a9a9a;
  --line: #E5E5E5;
  --line-strong: #d8d8d8;
  --surface: #ffffff;
  --surface-2: #fafafa;
  --surface-3: #f4f4f4;

  --risk-low:  #15803d;
  --risk-mod:  #c2620c;
  --risk-high: #b91c1c;
  --risk-low-bg:  #effaf2;
  --risk-mod-bg:  #fdf6ec;
  --risk-high-bg: #fdf0f0;

  --shadow-card: 0 1px 2px rgba(15,15,15,0.04), 0 1px 1px rgba(15,15,15,0.02);
  --shadow-pop:  0 6px 24px rgba(15,15,15,0.06), 0 2px 6px rgba(15,15,15,0.04);

  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 22px;

  --maxw: 1240px;
}

html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; }
body {
  font-family: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-feature-settings: "ss01", "cv11";
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--bg);
  letter-spacing: -0.005em;
}

.tnum { font-variant-numeric: tabular-nums; }

/* ---------- Top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.topbar .inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 600; letter-spacing: -0.02em; font-size: 15px;
  color: inherit; text-decoration: none;
}
.brand .mark {
  width: 22px; height: 22px; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #1a1a1a 0%, #000 70%);
  position: relative;
}
.brand .mark::after {
  content: ""; position: absolute; inset: 3px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.22);
}
.brand .sub {
  color: var(--muted-2); font-weight: 400; margin-left: 6px; font-size: 13px;
}
.nav { display: flex; gap: 26px; align-items: center; }
.nav a {
  color: var(--ink-2); text-decoration: none; font-size: 13.5px; font-weight: 450;
}
.nav a:hover { color: var(--ink); }

/* ---------- Container ---------- */
.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- Hero ---------- */
.hero {
  padding: 96px 0 48px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(34px, 4.6vw, 56px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 0 auto 20px;
  max-width: 880px;
  text-wrap: balance;
}
.hero p.lead {
  max-width: 720px;
  margin: 0 auto 22px;
  font-size: 17px;
  color: var(--muted);
  letter-spacing: -0.005em;
  text-wrap: pretty;
}
.hero .badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; color: var(--muted);
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 999px;
  background: #fff;
  letter-spacing: 0.005em;
}
.hero .badge .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--ink);
  opacity: 0.6;
}

/* ---------- Tool main ---------- */
.tool {
  margin-top: 8px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background: #fff;
  box-shadow: var(--shadow-card);
  overflow: hidden;
  min-height: 620px;
}
.tool .col-left {
  padding: 36px 36px;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
}
.tool .col-right {
  position: relative;
  background: var(--surface-2);
  min-height: 620px;
}
@media (max-width: 900px) {
  .tool { grid-template-columns: 1fr; }
  .tool .col-left { border-right: none; border-bottom: 1px solid var(--line); }
  .tool .col-right { min-height: 420px; }
}

/* ---------- Form ---------- */
.form-block .label-uc {
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-weight: 500;
}
.form-block h2 {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 6px 0 22px;
}

.field {
  display: flex; flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 10px 14px;
  background: #fff;
  transition: border-color .15s ease, box-shadow .15s ease;
  margin-bottom: 12px;
}
.field:focus-within {
  border-color: var(--ink);
  box-shadow: 0 0 0 3px rgba(10,10,10,0.06);
}
.field label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-weight: 500;
}
.field .row {
  display: flex; align-items: baseline; gap: 6px; margin-top: 2px;
}
.field input {
  border: 0; outline: none; background: transparent;
  font: inherit; font-size: 17px; color: var(--ink);
  letter-spacing: -0.01em;
  width: 100%; padding: 0;
}
.field input::placeholder { color: var(--muted-2); }
.field.flight input { letter-spacing: 0.06em; text-transform: uppercase; font-weight: 500; }

.btn-primary {
  font: inherit;
  width: 100%;
  padding: 14px 20px;
  border-radius: var(--r-md);
  background: var(--ink);
  color: #fff;
  border: 1px solid var(--ink);
  cursor: pointer;
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: -0.005em;
  transition: opacity .15s ease, transform .04s ease;
  margin-top: 4px;
}
.btn-primary:hover { opacity: 0.92; }
.btn-primary:active { transform: translateY(0.5px); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.manual-toggle {
  margin-top: 14px;
  font-size: 12.5px;
  color: var(--muted);
  text-align: center;
  cursor: pointer;
  user-select: none;
  display: block;
  background: none;
  border: none;
  width: 100%;
  padding: 4px;
  font-family: inherit;
  letter-spacing: -0.005em;
}
.manual-toggle:hover { color: var(--ink); }
.manual-toggle .chev {
  display: inline-block;
  margin-left: 4px;
  transition: transform .2s ease;
}
.manual-toggle.open .chev { transform: rotate(180deg); }

.manual-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 14px;
}
.manual-fields .field { margin-bottom: 0; }

/* ---------- Result ---------- */
.result {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.result-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 0;
}
.result-head .label-uc { font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); font-weight: 500; }
.dose-display {
  display: flex; align-items: baseline; gap: 12px;
  flex-wrap: wrap;
}
.dose-display .num {
  font-size: 84px;
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 0.95;
  font-variant-numeric: tabular-nums;
}
.dose-display .unit {
  font-size: 22px; color: var(--muted); font-weight: 500;
  letter-spacing: -0.01em;
}

/* risk badge */
.risk {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 14px; border-radius: 999px;
  font-size: 13px; font-weight: 500; letter-spacing: -0.005em;
  border: 1px solid;
  width: fit-content;
}
.risk .pip { width: 8px; height: 8px; border-radius: 50%; }
.risk.low  { color: var(--risk-low);  border-color: rgba(21,128,61,0.25);  background: var(--risk-low-bg); }
.risk.low  .pip { background: var(--risk-low); box-shadow: 0 0 0 3px rgba(21,128,61,0.12); }
.risk.mod  { color: var(--risk-mod);  border-color: rgba(194,98,12,0.28);  background: var(--risk-mod-bg); }
.risk.mod  .pip { background: var(--risk-mod); box-shadow: 0 0 0 3px rgba(194,98,12,0.14); }
.risk.high { color: var(--risk-high); border-color: rgba(185,28,28,0.28); background: var(--risk-high-bg); }
.risk.high .pip { background: var(--risk-high); box-shadow: 0 0 0 3px rgba(185,28,28,0.14); }

.compare-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}
.compare-card {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 12px 14px;
  background: #fff;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.compare-card .v {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  white-space: nowrap;
}
.compare-card .k {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: -0.005em;
}

.flight-meta {
  margin-top: 4px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 18px 24px;
  font-size: 12.5px;
  color: var(--muted);
}
.flight-meta .k {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted-2);
  font-weight: 500;
  margin-bottom: 2px;
}
.flight-meta .v {
  font-size: 13.5px;
  color: var(--ink-2);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.005em;
}
.flight-meta .meta-item { display: flex; flex-direction: column; }

.error-msg {
  font-size: 13px;
  color: var(--risk-high);
  background: var(--risk-high-bg);
  border: 1px solid rgba(185,28,28,0.18);
  padding: 10px 14px;
  border-radius: var(--r-md);
  margin-top: 12px;
}

.fade-in { animation: fade .35s ease both; }
@keyframes fade { from { opacity: 0; transform: translateY(4px);} to { opacity: 1; transform: none;} }

/* ---------- Map ---------- */
.map-empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  z-index: 401;
  pointer-events: none;
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(2px);
}
.map-empty .icon {
  width: 36px; height: 36px;
  border: 1px dashed var(--line-strong);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--muted-2);
  background: #fff;
}
.map-empty .text {
  font-size: 13.5px;
  color: var(--muted);
  letter-spacing: -0.005em;
}

#map {
  position: absolute; inset: 0;
  background: var(--surface-2);
}

/* leaflet overrides */
.leaflet-container { font-family: inherit !important; background: var(--surface-2) !important; }
.leaflet-control-attribution {
  background: rgba(255,255,255,0.85) !important;
  font-size: 10px !important;
  color: var(--muted-2) !important;
}
.leaflet-control-attribution a { color: var(--muted) !important; }
.leaflet-bar a {
  background: #fff !important;
  border-color: var(--line) !important;
  color: var(--ink) !important;
  width: 28px !important; height: 28px !important; line-height: 28px !important;
}
.leaflet-bar a:hover { background: var(--surface-2) !important; }

/* trajectory markers */
.trajectory-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 1px 2px rgba(0,0,0,0.2);
  cursor: pointer;
  transition: transform .12s ease;
}
.trajectory-dot:hover { transform: scale(1.4); }
.trajectory-dot.low  { background: var(--risk-low); }
.trajectory-dot.mod  { background: var(--risk-mod); }
.trajectory-dot.high { background: var(--risk-high); }

.airport-pin {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: #0a0a0a;
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 2px solid #fff;
  box-shadow: 0 1px 2px rgba(0,0,0,0.18), 0 0 0 4px rgba(10,10,10,0.06);
  font-family: "Inter", system-ui, sans-serif;
}

/* leaflet tooltip */
.leaflet-tooltip.penumbra-tip {
  background: rgba(10,10,10,0.96);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 12px;
  letter-spacing: -0.005em;
  box-shadow: 0 4px 16px rgba(0,0,0,0.18);
  font-family: "Inter", system-ui, sans-serif;
  line-height: 1.4;
}
.leaflet-tooltip.penumbra-tip::before { display: none; }
.penumbra-tip .tip-row { display: flex; justify-content: space-between; gap: 14px; }
.penumbra-tip .tip-row .k { color: rgba(255,255,255,0.55); font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.1em; font-weight: 500; }
.penumbra-tip .tip-row .v { font-variant-numeric: tabular-nums; }
.penumbra-tip .tip-head {
  font-weight: 600;
  letter-spacing: -0.005em;
  margin-bottom: 6px;
  font-size: 12.5px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  padding-bottom: 6px;
}

/* legend */
.map-legend {
  position: absolute;
  left: 14px; bottom: 14px;
  z-index: 400;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  box-shadow: var(--shadow-card);
  font-size: 11.5px;
  color: var(--ink-2);
  display: flex; align-items: center; gap: 14px;
}
.map-legend .item { display: inline-flex; align-items: center; gap: 6px; }
.map-legend .swatch {
  width: 8px; height: 8px; border-radius: 50%;
}
.map-legend .swatch.low  { background: var(--risk-low); }
.map-legend .swatch.mod  { background: var(--risk-mod); }
.map-legend .swatch.high { background: var(--risk-high); }

/* ---------- Explainer ---------- */
.explainer {
  margin-top: 80px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
@media (max-width: 880px) {
  .explainer { grid-template-columns: 1fr; }
}
.explainer .card {
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background: #fff;
  box-shadow: var(--shadow-card);
  padding: 28px 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.explainer .icon {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
}
.explainer h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.015em;
}
.explainer p {
  margin: 0;
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.55;
  letter-spacing: -0.005em;
}

/* ---------- Footer ---------- */
.footer {
  margin-top: 96px;
  border-top: 1px solid var(--line);
  padding: 32px 0 56px;
  color: var(--muted);
  font-size: 12.5px;
}
.footer .cols {
  display: flex; justify-content: space-between; align-items: center;
  gap: 24px; flex-wrap: wrap;
}
.footer a { color: var(--muted); text-decoration: none; }
.footer a:hover { color: var(--ink); }

/* placeholder state */
.placeholder-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 16px;
  color: var(--muted);
  flex: 1;
}
.placeholder-state .ph-icon {
  width: 44px; height: 44px;
  border: 1px dashed var(--line-strong);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
  color: var(--muted-2);
}
.placeholder-state .ph-text {
  font-size: 14px;
  color: var(--muted);
  max-width: 240px;
  line-height: 1.5;
  letter-spacing: -0.005em;
}

/* ---------- Lang switch ---------- */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
}
.lang-switch .ls-btn {
  font: inherit;
  font-size: 12px;
  letter-spacing: 0.04em;
  font-weight: 500;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--muted-2);
  padding: 2px 4px;
}
.lang-switch .ls-btn.active { color: var(--ink); }
.lang-switch .ls-btn:hover { color: var(--ink); }
.lang-switch .ls-sep { color: var(--line-strong); font-size: 12px; }
.nav a.active { color: var(--ink); font-weight: 500; }

/* ---------- CI line ---------- */
.ci-line {
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: -0.005em;
  margin-top: -6px;
}

.link-btn {
  font: inherit;
  font-size: 12px;
  color: var(--muted);
  background: none;
  border: none;
  cursor: pointer;
  letter-spacing: -0.005em;
  padding: 4px 0;
}
.link-btn:hover { color: var(--ink); }

.form-note {
  margin: 16px 0 0;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
  letter-spacing: -0.005em;
}

/* ---------- Docs page ---------- */
.docs { display: flex; flex-direction: column; gap: 18px; padding-bottom: 16px; }
.docs-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-card);
  padding: 28px 32px;
}
.docs-h3 {
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-weight: 500;
  margin: 26px 0 12px;
}
.docs-h3:first-of-type { margin-top: 22px; }
.endpoint {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface-2);
  font-family: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 13.5px;
}
.endpoint .method {
  background: var(--ink); color: #fff;
  padding: 2px 8px; border-radius: 5px;
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.04em;
}
.endpoint .path { color: var(--ink); letter-spacing: -0.005em; }

.param-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.param-table th, .param-table td {
  text-align: left; padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.param-table th {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--muted); font-weight: 500;
  border-bottom-color: var(--line-strong);
}
.param-table tr:last-child td { border-bottom: none; }
.param-table td:first-child, .param-table td:nth-child(2) { width: 1%; white-space: nowrap; }
.param-table code {
  font-family: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 12.5px;
  background: var(--surface-3);
  padding: 2px 6px; border-radius: 4px;
  color: var(--ink);
}

.docs-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 880px) { .docs-grid-2 { grid-template-columns: 1fr; } }

.code-block {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--surface-2);
}
.code-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 14px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.code-head .lang {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--muted); font-weight: 500;
}
.copy-btn {
  font: inherit; font-size: 12px;
  border: 1px solid var(--line); background: #fff;
  border-radius: 6px; padding: 3px 9px;
  color: var(--ink-2); cursor: pointer;
}
.copy-btn:hover { border-color: var(--ink); }
.code-block pre {
  margin: 0; padding: 16px 18px;
  font-family: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 12.5px; line-height: 1.6;
  color: var(--ink); background: var(--surface-2);
  overflow-x: auto; white-space: pre;
}

.github-link {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: #fff;
  text-decoration: none;
  color: var(--ink);
  font-size: 13.5px;
  letter-spacing: -0.005em;
  transition: border-color .15s ease;
}
.github-link:hover { border-color: var(--ink); }
.github-link .gh-mark { display: inline-flex; align-items: center; justify-content: center; color: var(--ink); }
.github-link .arrow-ext { margin-left: auto; color: var(--muted-2); }

/* ---------- Field pair (two fields side by side) ---------- */
.field-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.field-pair .field { margin-bottom: 0; }
.iata-input {
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  font-size: 16px !important;
}

/* ---------- Solar event alert ---------- */
.solar-alert {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: #fff8f0;
  border: 1px solid #f0b070;
  border-radius: var(--r-md);
  padding: 14px 16px;
  margin-bottom: 16px;
  font-size: 13px;
  line-height: 1.5;
}
.alert-icon {
  flex-shrink: 0;
  color: #c85000;
  margin-top: 1px;
}
.alert-body strong {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 4px;
}
.alert-row {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-2);
}
.storm-badge {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.04em;
}
.alert-note {
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
}

/* ---------- Map controls (NAT toggle + legend) ---------- */
.map-controls {
  position: absolute;
  left: 14px; bottom: 14px;
  z-index: 400;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.nat-toggle {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 12px;
  box-shadow: var(--shadow-card);
  font-size: 11.5px;
  color: var(--ink-2);
  cursor: pointer;
  transition: border-color .15s, color .15s;
}
.nat-toggle:hover { border-color: var(--ink); color: var(--ink); }
.nat-toggle.active { border-color: #1a6fbd; color: #1a6fbd; background: #f0f6ff; }
.nat-label {
  background: rgba(26,111,189,0.15);
  color: #1a6fbd;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.05em;
  pointer-events: none;
  white-space: nowrap;
}
/* override map-legend to not be absolute anymore (now inside .map-controls) */
.map-controls .map-legend {
  position: static;
  box-shadow: var(--shadow-card);
}

/* ---------- Airport autocomplete ---------- */
.ap-field {
  position: relative;
}
.ap-suggestions {
  position: absolute;
  top: calc(100% + 4px);
  left: 0; right: 0;
  z-index: 200;
  margin: 0; padding: 4px 0;
  list-style: none;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: 0 8px 24px rgba(0,0,0,0.10);
  overflow: hidden;
}
.ap-suggestions li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 14px;
  cursor: pointer;
  font-size: 13px;
  transition: background .1s;
}
.ap-suggestions li:hover { background: var(--surface-2); }
.ap-code {
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink);
  min-width: 34px;
}
.ap-city {
  color: var(--ink);
  font-weight: 500;
}
.ap-name {
  color: var(--muted);
  font-size: 11.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}