:root {
  color-scheme:dark;
  --bg:#04060a;
  --raised:#0b0f16;
  --line:#232936;
  --text:#eaf0f7;
  --dim:#b0b7c1;
  --muted:#949ba6;
  --accent:#f5a524;
  --live:#35d07f;
  --alert:#ff5c5c;
  --radius:4px;
  --mono:ui-monospace,SFMono-Regular,Menlo,monospace;
  --prose:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif
}
* {
  box-sizing:border-box
}
body {
  margin:0;
  background:var(--bg);
  color:var(--text);
  font:13.5px/1.5 var(--mono)
}
button,input,select {
  font:inherit
}
button,a,input,select,summary {
  -webkit-tap-highlight-color:transparent
}
button {
  min-height:44px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:transparent;
  color:var(--text);
  padding:9px 13px;
  cursor:pointer
}
button:hover {
  background:var(--raised)
}
button:disabled {
  opacity:.5;
  cursor:default
}
button.primary {
  background:var(--accent);
  border-color:var(--accent);
  color:var(--bg);
  font-weight:700
}
button[aria-pressed=true] {
  border-color:var(--accent);
  color:var(--accent)
}
a {
  color:var(--dim);
  text-underline-offset:4px
}
a:hover {
  color:var(--text)
}
:focus-visible {
  outline:2px solid var(--text);
  outline-offset:4px
}
[hidden] {
  display:none!important
}
.shell {
  max-width:1380px;
  margin:0 auto;
  padding:0 28px
}
.skip {
  position:absolute;
  top:-100px;
  background:var(--text);
  color:var(--bg);
  padding:12px;
  z-index:10
}
.skip:focus {
  top:5px
}
.top {
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:22px 0;
  gap:24px;
  border-bottom:1px solid var(--line)
}
.wordmark {
  font-size:22px;
  color:var(--text);
  text-decoration:none;
  letter-spacing:.1em;
  font-weight:700
}
.wordmark span {
  display:block;
  font-size:11.5px;
  color:var(--muted);
  font-weight:400;
  letter-spacing:0
}
.top nav {
  display:flex;
  align-items:center;
  gap:22px
}
.top nav a {
  display:inline-flex;
  align-items:center;
  min-height:44px
}
.statusbar {
  display:flex;
  justify-content:space-between;
  gap:16px;
  padding:12px 0;
  color:var(--muted);
  font-size:11.5px
}
#feedStatus {
  color:var(--accent)
}
#feedStatus[data-live=true] {
  color:var(--live)
}
#notice {
  border-left:2px solid var(--accent);
  padding:12px 16px;
  background:var(--raised);
  margin:12px 0;
  font-family:var(--prose)
}
.welcome {
  padding:24px 0 32px;
  border-bottom:1px solid var(--line)
}
h1,h2,p {
  margin:0
}
h1 {
  font-size:22px;
  font-weight:600;
  line-height:1.3
}
h2 {
  font-size:17px;
  font-weight:600;
  line-height:1.4
}
p {
  margin:10px 0;
  color:var(--dim);
  font-family:var(--prose)
}
.small {
  font-size:12px;
  line-height:1.6;
  color:var(--muted)
}
.welcome p {
  max-width:650px
}
.actions {
  display:flex;
  gap:8px;
  flex-wrap:wrap;
  margin:16px 0 8px
}
.workspace {
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(340px,.85fr);
  gap:40px;
  padding:28px 0
}
.target {
  min-width:0
}
.eyebrow {
  font-size:11.5px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--accent);
  margin-bottom:8px
}
.target h1 {
  font-size:28px
}
#targetAircraft {
  font-family:var(--mono);
  color:var(--dim);
  font-size:17px
}
.sky {
  position:relative;
  max-width:410px;
  margin:12px auto 20px
}
.sky svg {
  display:block;
  width:100%;
  max-height:350px;
  overflow:visible
}
.grid {
  fill:none;
  stroke:var(--line);
  stroke-width:1
}
.cardinal {
  fill:var(--muted);
  font:12px var(--mono)
}
.zenith {
  fill:var(--muted);
  font:10px var(--mono)
}
.sector {
  fill:var(--accent);
  fill-opacity:.06;
  stroke:var(--accent);
  stroke-width:1;
  stroke-opacity:.4
}
.marker {
  fill:var(--accent)
}
.marker-ring {
  stroke:var(--accent);
  fill:var(--bg);
  stroke-width:1.5
}
.sky-caption {
  display:block;
  text-align:center;
  font-size:11.5px;
  color:var(--muted)
}
#direction {
  font-family:var(--prose);
  font-size:22px;
  max-width:520px
}
.metrics {
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:12px;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:18px 0;
  margin:18px 0
}
.metrics span {
  display:block;
  color:var(--muted);
  font-size:11.5px
}
.metrics strong {
  font-weight:500;
  font-size:22px;
  font-variant-numeric:tabular-nums
}
.target-actions button {
  flex-grow:1
}
.activity {
  min-width:0;
  border-left:1px solid var(--line);
  padding-left:32px
}
.listen-head {
  display:flex;
  align-items:start;
  gap:16px;
  justify-content:space-between;
  border-bottom:1px solid var(--line);
  padding-bottom:12px
}
.listen-head button {
  flex-shrink:0
}
.listen-head .small {
  max-width:220px
}
.filters {
  display:flex;
  gap:8px;
  align-items:center;
  padding:16px 0
}
.filters label {
  color:var(--muted)
}
select,input {
  color:var(--text);
  background:var(--raised);
  border:1px solid var(--line);
  border-radius:var(--radius);
  min-height:44px;
  padding:8px;
  min-width:0
}
select {
  max-width:100%
}
.filters select {
  flex:1;
  width:100%
}
.tabs {
  display:flex;
  gap:0;
  border-bottom:1px solid var(--line)
}
.tabs button {
  border:0;
  border-radius:0;
  flex:1;
  white-space:nowrap;
  padding-left:8px;
  padding-right:8px
}
.tabs button[aria-selected=true] {
  color:var(--accent);
  border-bottom:2px solid var(--accent)
}
.tabs span {
  font-size:11.5px;
  color:var(--muted)
}
.flight {
  display:block;
  width:100%;
  text-align:left;
  border:0;
  border-bottom:1px solid var(--line);
  border-radius:0;
  padding:18px 12px;
  position:relative
}
.flight[aria-pressed=true] {
  background:var(--raised);
  border-left:2px solid var(--accent);
  padding-left:10px
}
.flight-title {
  display:flex;
  justify-content:space-between;
  gap:10px;
  align-items:center
}
.flight-title strong {
  font-size:17px;
  font-weight:500
}
.flight-title span {
  font-size:11.5px;
  color:var(--accent);
  text-align:right
}
.flight-type {
  display:block;
  margin:6px 0;
  color:var(--dim)
}
.flight-meta {
  display:block;
  color:var(--muted);
  font-size:11.5px;
  line-height:1.7
}
.empty {
  padding:26px 12px;
  font-family:var(--prose);
  color:var(--muted)
}
.history-row {
  padding:16px 8px;
  border-bottom:1px solid var(--line)
}
.history-row strong {
  display:block;
  font-size:17px;
  font-weight:500
}
.history-row span {
  display:block;
  color:var(--muted);
  font-size:12px;
  margin-top:6px
}
.settings {
  border-top:1px solid var(--line);
  padding:18px 0
}
.settings summary {
  cursor:pointer;
  min-height:44px;
  display:list-item;
  padding:10px 0;
  font-size:17px
}
.settings form {
  padding:10px 0
}
.settings-grid {
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:22px
}
.settings label {
  display:flex;
  flex-direction:column;
  gap:8px;
  color:var(--dim);
  font-size:12px
}
.settings output {
  display:block;
  color:var(--text)
}
input[type=range] {
  accent-color:var(--accent);
  width:100%;
  padding:0;
  background:transparent;
  border:0
}
.settings .small {
  max-width:850px
}
footer {
  padding:24px 0;
  border-top:1px solid var(--line);
  font:11.5px/1.8 var(--prose);
  color:var(--muted)
}
footer span {
  display:block
}
#spotting:focus {
  outline:none
}
@media(max-width:950px) {
  .shell {
    padding:0 22px
  }
  .workspace {
    gap:24px;
    grid-template-columns:minmax(0,1fr) minmax(320px,1fr)
  }
  .activity {
    padding-left:22px
  }
  .listen-head {
    display:block
  }
  .listen-head button {
    width:100%;
    margin-top:8px
  }
  .listen-head .small {
    max-width:none
  }
  .settings-grid {
    grid-template-columns:repeat(2,minmax(0,1fr))
  }
}
@media(max-width:700px) {
  .shell {
    padding:0 16px
  }
  .top {
    align-items:flex-start;
    gap:8px;
    padding:16px 0
  }
  .wordmark {
    font-size:17px
  }
  .wordmark span {
    font-size:11.5px
  }
  .top nav {
    gap:10px;
    flex-wrap:wrap;
    justify-content:flex-end;
    font-size:11.5px
  }
  .top nav button {
    font-size:11.5px;
    padding:6px 10px
  }
  .statusbar {
    align-items:flex-start;
    gap:8px
  }
  .statusbar>span {
    max-width:55%
  }
  .workspace {
    display:flex;
    flex-direction:column;
    padding-top:24px;
    gap:28px
  }
  .target h1 {
    font-size:24px
  }
  .activity {
    border-left:0;
    border-top:1px solid var(--line);
    padding:24px 0 0
  }
  .sky {
    max-width:300px;
    margin:0 auto 16px
  }
  #direction {
    font-size:20px
  }
  .target-actions button {
    padding:8px
  }
  .settings-grid {
    gap:16px
  }
  .listen-head {
    display:flex
  }
  .listen-head button {
    width:auto;
    margin-top:0
  }
  .listen-head .small {
    max-width:200px
  }
  .filters {
    flex-wrap:wrap
  }
  .filters select {
    width:auto
  }
  .welcome {
    padding-top:18px
  }
  .welcome .actions button {
    flex:1;
    min-width:140px
  }
  .metrics strong {
    font-size:20px
  }
  .tabs button {
    font-size:12px
  }
}
@media(prefers-reduced-motion:reduce) {
  * {
    scroll-behavior:auto!important;
    animation:none!important;
    transition:none!important
  }
}
@media(prefers-contrast:more) {
  :root {
    --line:#606a79;
    --muted:#c6cdd7
  }
}
@media(min-width:701px) {
  .target {
    position:sticky;
    top:24px;
    align-self:start
  }
}
.quick-listen {
  display: none;
}
@media (max-width: 700px) {
  .quick-listen {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 16px 0 8px;
  }
  .quick-listen span {
    font-size: 12px;
    color: var(--dim);
  }
  .quick-listen button {
    flex-shrink: 0;
  }
}

.discovery-panel { border-top:1px solid var(--line); border-bottom:1px solid var(--line); padding:24px 0; }
.discovery-heading { display:flex; align-items:center; justify-content:space-between; gap:20px; }
.discovery-heading > div { min-width:0; }
.discovery-heading h2 { overflow-wrap:anywhere; font-size:22px; }
.discovery-heading button { flex-shrink:0; }
.up-next { display:flex; gap:8px; flex-wrap:wrap; margin-top:12px; }
.up-next button { text-align:left; flex:1; min-width:160px; }
.up-next span { display:block; font-size:12px; color:var(--muted); }
.cadence-control { display:flex; gap:12px; align-items:center; margin-top:16px; color:var(--dim); }
.cadence-control select { flex:1; }
.feedback-controls { margin-top:20px; border-top:1px solid var(--line); }
.feedback-controls summary { cursor:pointer; padding:12px 0; min-height:44px; color:var(--dim); }
.personalisation { border:0; border-top:1px solid var(--line); padding:20px 0; margin:24px 0 0; }
.personalisation legend { font-size:17px; padding:0 12px 0 0; }
.personalisation .opt-in { flex-direction:row; align-items:center; min-height:44px; }
.personalisation input[type=checkbox] { width:24px; height:24px; min-height:24px; accent-color:var(--accent); }
.personalisation button { margin-top:12px; }
@media(max-width:700px) { .discovery-heading { align-items:flex-start; gap:12px; } .discovery-heading h2 { font-size:20px; } .discovery-panel { padding:20px 0; } }

.forecast-path,.visible-path { fill:none; stroke:var(--muted); stroke-width:1.5; stroke-dasharray:4 5; }
.visible-path { stroke:var(--accent); stroke-width:2; }
.preview-ring { fill:var(--bg); stroke:var(--text); stroke-width:2; stroke-dasharray:3 3; }
#previewMarkerTime { fill:var(--text); font:12px var(--mono); }
.pass-controls { border-top:1px solid var(--line); border-bottom:1px solid var(--line); padding:16px 0; margin-bottom:20px; }
.pass-heading { display:flex; justify-content:space-between; align-items:baseline; gap:12px; flex-wrap:wrap; }
.pass-heading h2 { font-size:17px; }
.preview-heading { display:flex; align-items:center; justify-content:space-between; gap:12px; margin-top:12px; }
.preview-heading label { font-size:12px; }
.preview-actions { display:flex; gap:6px; flex-shrink:0; }
.preview-actions button { font-size:12px; padding:8px 10px; }
.pass-controls[data-preview=true] #previewLabel { color:var(--accent); }
.time-scale { display:flex; justify-content:space-between; font-size:11.5px; color:var(--muted); }
.pass-timeline { border-bottom:1px solid var(--line); padding-bottom:20px; margin-bottom:24px; }
.pass-row { display:block; width:100%; text-align:left; border:0; border-bottom:1px solid var(--line); border-radius:0; padding:12px 0; }
.pass-row[aria-pressed=true] .pass-aircraft { color:var(--text); }
.pass-aircraft,.pass-window-label { display:block; color:var(--muted); font-size:11.5px; margin-top:4px; }
.pass-rail { display:block; height:14px; margin:10px 2px 4px; position:relative; border-bottom:1px solid var(--line); }
.pass-window { position:absolute; left:var(--entry); width:var(--duration); height:4px; top:7px; background:var(--muted); }
.pass-peak { position:absolute; left:var(--peak); top:3px; width:2px; height:12px; background:var(--accent); transform:translateX(-1px); }
@media(max-width:700px) { .preview-heading { flex-wrap:wrap; } .preview-actions { margin-left:auto; } .pass-heading { gap:4px; } }