:root {
  /* Aurora (default): deep teal night sky, mint + coral */
  --bg: #061a1f;
  --bg-2: #0a242a;
  --panel: #0e2c33;
  --panel-2: #12363e;
  --line: #1f4a52;
  --text: #e6f6f3;
  --text-2: #c3dcd7;
  --muted: #86aaa4;
  --accent: #2dd4bf;
  --accent-2: #fb7185;
  --on-accent: #04201c;
  --ok: #4ade80;
  --glow: #0f4c55;
  --route-ahead: #86aaa4;
  --route-flown: #2dd4bf;
  --plane: #fde68a;
  --plane-stroke: #04201c;
  --map-style: dark_all;
  --radius: 16px;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  color-scheme: dark;
}
:root[data-theme="sunset"] {
  --bg: #170c1c; --bg-2: #211126; --panel: #2a1631; --panel-2: #341b3c; --line: #4a2a53;
  --text: #fdf0f6; --text-2: #e7cfe0; --muted: #b996b3;
  --accent: #ffa94d; --accent-2: #ff4f8b; --on-accent: #2a0d12; --ok: #7ee2a8; --glow: #4a1f4f;
  --route-ahead: #b996b3; --route-flown: #ffa94d; --plane: #ffe3b3; --plane-stroke: #2a0d12;
  --map-style: dark_all; color-scheme: dark;
}
:root[data-theme="daylight"] {
  --bg: #eef3fa; --bg-2: #ffffff; --panel: #ffffff; --panel-2: #f2f6fc; --line: #d7e0ee;
  --text: #13213b; --text-2: #34445f; --muted: #5d6f8f;
  --accent: #2563eb; --accent-2: #f97316; --on-accent: #ffffff; --ok: #16a34a; --glow: #cfe0ff;
  --route-ahead: #64748b; --route-flown: #2563eb; --plane: #f97316; --plane-stroke: #ffffff;
  --map-style: voyager; color-scheme: light;
}
:root[data-theme="midnight"] {
  --bg: #0b1020; --bg-2: #111832; --panel: #141c3a; --panel-2: #1a2347; --line: #26305a;
  --text: #e8ecf8; --text-2: #c8cfe8; --muted: #8f9bc4;
  --accent: #ffb547; --accent-2: #ff5f6d; --on-accent: #1a1020; --ok: #3ddc97; --glow: #1b2552;
  --route-ahead: #8f9bc4; --route-flown: #ffb547; --plane: #ffb547; --plane-stroke: #1a1020;
  --map-style: dark_all; color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: radial-gradient(1200px 600px at 80% -10%, var(--glow) 0%, transparent 60%), var(--bg);
  color: var(--text);
  font: 16px/1.5 Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.muted { color: var(--muted); }
.mono { font-family: var(--mono); }
[hidden] { display: none !important; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 10px clamp(16px, 4vw, 40px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-size: 20px; font-weight: 600; letter-spacing: -.02em; }
.brand:hover { text-decoration: none; }
.brand .logo { width: 34px; height: 34px; transition: transform .6s cubic-bezier(.2, .8, .2, 1); }
.brand:hover .logo { transform: rotate(-30deg); }
.logo-a { stop-color: var(--accent); }
.logo-b { stop-color: var(--accent-2); }
.logo-dial { stroke: var(--line); }
.brand b { font-weight: 700; background: linear-gradient(90deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.top-actions { display: flex; align-items: center; gap: 12px; }

/* ---------- hero ---------- */
.hero {
  position: relative; overflow: hidden;
  max-width: 1400px; margin: 20px auto 0; width: calc(100% - 2 * clamp(16px, 4vw, 40px));
  display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 24px;
  padding: clamp(20px, 3vw, 32px) clamp(20px, 3.5vw, 40px);
  border: 1px solid var(--line); border-radius: calc(var(--radius) + 4px);
  background:
    radial-gradient(600px 220px at 100% 0%, color-mix(in srgb, var(--accent-2) 16%, transparent), transparent 70%),
    radial-gradient(700px 260px at 0% 100%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 70%),
    linear-gradient(180deg, var(--panel), var(--bg-2));
}
.hero-arcs { position: absolute; right: 0; top: 0; height: 100%; width: min(70%, 760px); pointer-events: none; opacity: .45;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 30%, #000 60%, transparent 85%); mask-image: linear-gradient(90deg, transparent, #000 30%, #000 60%, transparent 85%); }
.hero-arcs path { fill: none; stroke: var(--accent); stroke-width: 1.5; stroke-dasharray: 5 7; opacity: .55; }
.hero-arcs path:nth-child(2) { stroke: var(--accent-2); }
.hero-copy, .hero-cta { position: relative; }
.eyebrow { margin: 0 0 8px; display: inline-flex; align-items: center; gap: 8px; font: 600 12px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 0 color-mix(in srgb, var(--ok) 60%, transparent); animation: pulse 2s ease-out infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 8px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }
.hero h1 { margin: 0; font-size: clamp(30px, 4.4vw, 52px); line-height: 1.05; letter-spacing: -.035em; font-weight: 700; }
.lede { margin: 10px 0 0; max-width: 56ch; color: var(--text-2); font-size: clamp(15px, 1.3vw, 17px); }
.hero-cta { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.hint { margin: 0; font-size: 13px; color: var(--muted); }
kbd { font: 600 11px var(--mono); padding: 2px 6px; border-radius: 6px; border: 1px solid var(--line); border-bottom-width: 2px; background: var(--bg-2); color: var(--text-2); }

.spin {
  display: inline-flex; align-items: center; gap: 8px;
  border: 0; border-radius: 999px; cursor: pointer;
  padding: 11px 22px; font: 600 16px Inter, sans-serif; color: var(--on-accent);
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  box-shadow: 0 6px 24px -6px color-mix(in srgb, var(--accent-2) 60%, transparent);
  transition: transform .15s ease, filter .15s ease;
}
.spin svg { width: 18px; height: 18px; }
.spin:hover { transform: translateY(-1px); filter: brightness(1.05); }
.spin:disabled { filter: grayscale(.6) brightness(.8); cursor: progress; }
.spin.busy svg { animation: rot 1s linear infinite; }
.spin.small { padding: 8px 16px; font-size: 14px; }
.spin-big { padding: 16px 30px; font-size: 18px; gap: 10px; box-shadow: 0 10px 34px -8px color-mix(in srgb, var(--accent-2) 70%, transparent), inset 0 1px 0 rgba(255,255,255,.25); }
.spin-big svg { width: 24px; height: 24px; }
.spin-big:hover .wheel { transform: rotate(90deg); }
.spin .wheel { transition: transform .5s ease; }
.spin-mini { display: none; padding: 8px 16px; font-size: 14px; }
.spin-mini svg { width: 15px; height: 15px; }
.spin-mini.show { display: inline-flex; animation: drop-in .2s ease; }
@keyframes drop-in { from { opacity: 0; transform: translateY(-6px); } }
@keyframes rot { to { transform: rotate(360deg); } }

main { padding: 16px clamp(16px, 4vw, 40px) 40px; max-width: 1400px; margin: 0 auto; }

/* ---------- map stage ---------- */
.stage { position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: var(--bg-2); }
#map { height: min(58vh, 560px); min-height: 320px; background: var(--bg-2); }
.leaflet-container { font-family: Inter, sans-serif; }
.leaflet-control-attribution { background: color-mix(in srgb, var(--bg) 75%, transparent) !important; color: var(--muted) !important; }
.leaflet-control-attribution a { color: var(--muted) !important; }
.leaflet-bar a { background: var(--panel) !important; color: var(--text) !important; border-color: var(--line) !important; }

.status, .error {
  position: absolute; inset: 0; z-index: 500;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px;
  background: color-mix(in srgb, var(--bg) 55%, transparent); backdrop-filter: blur(2px);
  text-align: center; padding: 20px;
}
.status p, .error p { margin: 0; font-weight: 500; max-width: 46ch; }
.status.done { opacity: 0; pointer-events: none; transition: opacity .4s ease; }
.radar { width: 88px; height: 88px; border-radius: 50%; border: 2px solid var(--line); position: relative; overflow: hidden;
  background: repeating-radial-gradient(circle, transparent 0 14px, color-mix(in srgb, var(--ok) 15%, transparent) 15px 16px); }
.radar span { position: absolute; inset: 0; background: conic-gradient(from 0deg, color-mix(in srgb, var(--ok) 55%, transparent), transparent 25%); animation: rot 1.6s linear infinite; }

.plane-icon { filter: drop-shadow(0 2px 6px rgba(0,0,0,.45)); }
.plane-icon .plane-svg { width: 34px; height: 34px; display: block; transform-origin: 50% 50%; }
.ap-icon { display: grid; place-items: center; }
.ap-pin { background: var(--panel); border: 2px solid var(--accent); color: var(--text); font: 700 12px var(--mono);
  padding: 3px 7px; border-radius: 8px; white-space: nowrap; box-shadow: 0 4px 14px rgba(0,0,0,.5); }
.ap-pin.to { border-color: var(--accent-2); }

/* ---------- flight board ---------- */
.flight { margin-top: 20px; }
.board { background: linear-gradient(180deg, var(--panel), var(--bg-2)); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(16px, 3vw, 28px); }
.board-route { display: grid; grid-template-columns: 1fr minmax(120px, 2fr) 1fr; gap: 16px; align-items: center; }
.port .code { font: 700 clamp(34px, 6vw, 56px)/1 var(--mono); letter-spacing: .02em; }
.port .pcity { font-weight: 600; font-size: 18px; margin-top: 6px; }
.port .apname { color: var(--muted); font-size: 13px; }
.port.right { text-align: right; }
.route-track { position: relative; height: 4px; background: var(--line); border-radius: 4px; margin: 0 8px; }
.route-fill { position: absolute; left: 0; top: 0; bottom: 0; background: linear-gradient(90deg, var(--accent), var(--accent-2)); border-radius: 4px; width: 0; transition: width .6s ease; }
.route-plane { position: absolute; top: 50%; transform: translate(-50%, -54%); font-size: 22px; color: var(--accent); left: 0; transition: left .6s ease; text-shadow: 0 0 12px color-mix(in srgb, var(--accent) 60%, transparent); }
.route-meta { text-align: center; color: var(--muted); font-size: 13px; margin-top: 14px; }

.board-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 24px; padding-top: 20px; border-top: 1px dashed var(--line); }
.flightno { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.flightno .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .12em; }
.flightno .value { font-size: 26px; font-weight: 700; color: var(--accent); }
.flightno .airline { font-weight: 600; }
.live-badge { display: inline-flex; align-items: center; gap: 8px; font: 700 12px var(--mono); letter-spacing: .1em; color: var(--ok); }
.live-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 0 color-mix(in srgb, var(--ok) 60%, transparent); animation: pulse 1.8s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 10px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; margin: 18px 0 0; }
.stats div { background: var(--bg-2); border: 1px solid var(--line); border-radius: 12px; padding: 10px 14px; }
.stats dt { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .1em; }
.stats dd { margin: 2px 0 0; font: 700 18px var(--mono); }
.stats dd small { font: 500 12px Inter, sans-serif; color: var(--muted); margin-left: 4px; }

.airframe { display: flex; gap: 16px; align-items: center; margin-top: 16px; flex-wrap: wrap; }
.af-photo { margin: 0; width: 240px; max-width: 100%; }
.af-photo img, .af-photo .af-ph { width: 100%; aspect-ratio: 16/10; object-fit: cover; border-radius: 12px; border: 1px solid var(--line); background: var(--bg-2); display: block; }
.af-photo .af-ph { display: grid; place-items: center; font-size: 34px; color: var(--muted); }
.af-photo.loading .af-ph { background: linear-gradient(90deg, var(--bg-2), var(--panel-2), var(--bg-2)); background-size: 200% 100%; animation: shimmer 1.2s infinite; }
.af-photo.empty { display: none; }
.af-photo figcaption { font-size: 11px; color: var(--muted); margin-top: 4px; }
.airframe .af-text { font-size: 14px; color: var(--muted); }
.airframe .af-text strong { color: var(--text); font-size: 16px; display: block; }

.actions { display: flex; gap: 10px; margin-top: 18px; flex-wrap: wrap; }
.ghost { background: transparent; border: 1px solid var(--line); color: var(--text); border-radius: 999px; padding: 8px 16px; font: 500 14px Inter, sans-serif; cursor: pointer; }
.ghost:hover { border-color: var(--accent); text-decoration: none; }

/* ---------- city guides ---------- */
.cities { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 20px; }
.city { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; min-width: 0; }
.city-hero { position: relative; height: 220px; background: var(--bg-2) center/cover no-repeat; }
.city-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, color-mix(in srgb, var(--panel) 5%, transparent) 30%, var(--panel) 100%); }
.city-hero .tag { position: absolute; z-index: 1; top: 14px; left: 16px; font: 700 11px var(--mono); letter-spacing: .14em; padding: 5px 10px; border-radius: 999px; background: color-mix(in srgb, var(--bg) 80%, transparent); color: var(--accent); }
.city.to .city-hero .tag { color: var(--accent-2); }
.city-hero h3 { position: absolute; z-index: 1; bottom: 8px; left: 20px; right: 20px; margin: 0; font-size: 30px; letter-spacing: -.02em; }
.city-hero h3 small { display: block; font-size: 14px; font-weight: 500; color: var(--muted); letter-spacing: 0; }
.city-body { padding: 4px 20px 22px; }
.city-body > p.summary { color: var(--text-2); font-size: 15px; }
.city h4.section { margin: 22px 0 10px; font-size: 13px; text-transform: uppercase; letter-spacing: .14em; color: var(--muted); display: flex; align-items: center; gap: 8px; }
.city h4.section::after { content: ""; height: 1px; flex: 1; background: var(--line); }
.cards { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.card { display: grid; grid-template-columns: 96px 1fr; gap: 12px; background: var(--bg-2); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.card-img { background: linear-gradient(135deg, var(--panel-2), var(--glow)) center/cover no-repeat; min-height: 96px; display: grid; place-items: center; font-size: 28px; }
.card-body { padding: 10px 12px 10px 0; min-width: 0; }
.card h4 { margin: 0 0 2px; font-size: 15px; }
.card p { margin: 0; font-size: 13px; color: var(--muted); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card-links { display: flex; gap: 12px; font-size: 12px; margin-top: 4px; }
.city .more { display: inline-block; margin-top: 16px; font-size: 14px; }
.skeleton { background: linear-gradient(90deg, var(--bg-2), var(--panel-2), var(--bg-2)); background-size: 200% 100%; animation: shimmer 1.2s infinite; border-radius: 10px; height: 96px; margin-bottom: 10px; }
@keyframes shimmer { to { background-position: -200% 0; } }

.footer { text-align: center; font-size: 12px; color: var(--muted); padding: 10px 16px 30px; }
.footer a { color: var(--muted); text-decoration: underline; }

.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); background: var(--panel-2); border: 1px solid var(--line); padding: 10px 18px; border-radius: 999px; z-index: 2000; font-size: 14px; }

@media (max-width: 860px) {
  .cities { grid-template-columns: 1fr; }
  .hero { grid-template-columns: 1fr; }
  .hero-arcs { display: none; }
  .hero-cta { flex-direction: row; justify-content: flex-start; gap: 14px; }
}
@media (max-width: 520px) {
  .topbar { gap: 10px; }
  .brand { font-size: 17px; }
  .brand .logo { width: 28px; height: 28px; }
  .themes { gap: 5px; padding: 4px; }
  .themes-name { display: none; }
  .themes button { width: 18px; height: 18px; }
  .top-actions { gap: 8px; }
  .spin-mini { padding: 7px 12px; }
  .spin-mini span { display: none; }
  .hero { margin-top: 12px; gap: 16px; }
  .lede { font-size: 14px; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .spin-big { justify-content: center; width: 100%; }
  .hint { display: none; }
  .board-route { grid-template-columns: 1fr 1fr; }
  .route-line { grid-column: 1 / -1; grid-row: 2; }
  .card { grid-template-columns: 80px 1fr; }
  .city-hero { height: 170px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ---------- partner (affiliate) links ---------- */
.trip { margin-left: auto; display: flex; gap: 10px; }
.partner { display: inline-flex; align-items: center; gap: 6px; border-radius: 999px; padding: 8px 16px; font: 600 14px Inter, sans-serif;
  background: color-mix(in srgb, var(--accent) 12%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent); color: var(--accent); }
.partner:hover { background: color-mix(in srgb, var(--accent) 20%, transparent); text-decoration: none; }
.partner-flights::before { content: "✈"; }
.partner-hotels::before { content: "🛏"; }
.partner-tours::before { content: "🎟"; }
.plan { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
@media (max-width: 520px) { .trip { margin-left: 0; } }

/* ---------- theme switcher ---------- */
.themes { display: flex; gap: 6px; align-items: center; padding: 5px 6px 5px 12px; border-radius: 999px;
  background: color-mix(in srgb, var(--panel) 80%, transparent); border: 1px solid var(--line); }
.themes-name { font: 600 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); min-width: 7ch; margin-right: 2px; }
.themes button { width: 22px; height: 22px; border-radius: 50%; border: 2px solid transparent; cursor: pointer; padding: 0; transition: transform .15s ease; }
.themes button:hover { transform: scale(1.12); }
.themes button[aria-pressed="true"] { border-color: var(--bg); box-shadow: 0 0 0 2px var(--accent); }
.themes [data-t="aurora"] { background: linear-gradient(135deg, #0e2c33 50%, #2dd4bf 50%); }
.themes [data-t="sunset"] { background: linear-gradient(135deg, #2a1631 50%, #ffa94d 50%); }
.themes [data-t="daylight"] { background: linear-gradient(135deg, #ffffff 50%, #2563eb 50%); }
.themes [data-t="midnight"] { background: linear-gradient(135deg, #141c3a 50%, #ffb547 50%); }
:root[data-theme="daylight"] .stats div, :root[data-theme="daylight"] .card { box-shadow: 0 1px 2px rgba(19, 33, 59, .06); }
:root[data-theme="daylight"] .board { background: var(--panel); }