:root {
  --accent:#4fd2f9;
  --accent2:#7ef7d3;
  --accent3:#2dd4bf;
  --ink:#e6f7ff;
  --muted:#8eb9c7;
  --danger:#ff6b6b;
  --ok:#6bffb8;
  --bg:#021c2b;
}
* { box-sizing:border-box; }
html, body {
  height:100%;
  margin:0;
  font-family:"Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background:radial-gradient(120% 120% at 50% -10%, #1cc1ff 0%, #0a6a9d 45%, #04324a 100%);
  color:var(--ink);
  overflow:hidden;
}
body::before {
  content:"";
  position:fixed;
  inset:0;
  background:radial-gradient(140% 120% at 10% -20%, rgba(103,236,255,0.18) 0%, transparent 70%),
             radial-gradient(120% 140% at 90% -10%, rgba(126,247,211,0.16) 0%, transparent 65%);
  pointer-events:none;
  mix-blend-mode:screen;
  animation:slowGlow 16s ease-in-out infinite alternate;
}
@keyframes slowGlow {
  0% { opacity:0.6; }
  50% { opacity:0.85; }
  100% { opacity:0.6; }
}
#wrap {
  position:fixed;
  inset:0;
  display:grid;
  place-items:center;
  padding:18px;
}
#game {
  display:block;
  width:min(1240px, 98vw);
  height:auto;
  aspect-ratio:16/9;
  border-radius:22px;
  background:#031d2b;
  box-shadow:0 32px 120px rgba(0,0,0,0.55);
}
.hud { position:fixed; inset:0; pointer-events:none; }
.hud .top {
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  align-items:center;
  justify-content:space-between;
  padding:12px 18px;
  pointer-events:none;
}
.pill {
  pointer-events:auto;
  border-radius:999px;
  padding:10px 18px;
  background:rgba(6,32,48,0.48);
  backdrop-filter:blur(14px);
  border:1px solid rgba(125,225,255,0.22);
  display:inline-flex;
  align-items:center;
  gap:14px;
  transition:transform 0.18s ease;
}
.pill.btn {
  cursor:pointer;
  user-select:none;
  font-weight:600;
  gap:10px;
}
.pill.btn:active { transform:translateY(1px); }
.stats {
  display:flex;
  align-items:center;
  gap:16px;
  pointer-events:auto;
}
.stat { min-width:96px; text-align:center; }
.stat strong { display:block; font-size:1.1rem; line-height:1.2; }
.stat span {
  display:block;
  font-size:0.75rem;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--muted);
}
.gauges {
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  pointer-events:auto;
}
.gauge {
  display:grid;
  gap:6px;
  min-width:160px;
}
.gauge label {
  font-size:0.7rem;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--muted);
}
.gauge .bar {
  position:relative;
  height:12px;
  border-radius:999px;
  background:rgba(12,52,72,0.8);
  overflow:hidden;
}
.gauge .bar em {
  position:absolute;
  inset:0;
  border-radius:999px;
  background:linear-gradient(90deg, var(--accent), var(--accent2));
  transform-origin:left center;
  transform:scaleX(1);
  transition:transform 0.18s ease;
}
.gauge.air .bar em { background:linear-gradient(90deg, #34d399, #9ef6ff); }
.gauge.dash .bar em { background:linear-gradient(90deg, #60a5fa, #4fd2f9); }
.actions { display:flex; align-items:center; gap:10px; pointer-events:auto; }
#comboBadge {
  padding:6px 14px;
  border-radius:999px;
  background:rgba(13,72,92,0.6);
  border:1px solid rgba(130,230,255,0.28);
  font-weight:700;
  letter-spacing:0.08em;
  font-size:0.78rem;
  text-transform:uppercase;
  opacity:0;
  transform:translateY(-10px);
  transition:opacity 0.18s ease, transform 0.18s ease, background 0.18s ease;
}
#comboBadge.show {
  opacity:1;
  transform:translateY(0);
  background:linear-gradient(120deg, rgba(79,210,249,0.8), rgba(126,247,211,0.8));
  color:#063140;
}
.overlay {
  position:fixed;
  inset:0;
  display:none;
  place-items:center;
  background:linear-gradient(to bottom, rgba(2,20,34,0.45), rgba(2,20,34,0.72));
  backdrop-filter:blur(10px);
  pointer-events:auto;
  z-index:4;
}
.overlay.show { display:grid; }
.panel {
  width:min(860px, 92vw);
  padding:32px;
  border-radius:26px;
  background:rgba(5,32,46,0.82);
  border:1px solid rgba(150,250,255,0.18);
  box-shadow:0 34px 120px rgba(0,0,0,0.5);
  display:grid;
  gap:18px;
}
.panel h1 { margin:0; font-size:32px; }
.panel p { margin:0; color:#d5f2fa; line-height:1.6; }
.panel strong { color:var(--accent2); }
.panel-actions { display:flex; flex-wrap:wrap; gap:12px; }
.pill.btn.primary {
  font-weight:800;
  background:linear-gradient(180deg, var(--accent), var(--accent2));
  color:#05313f;
  border:none;
}
#leaderboard {
  margin:0;
  padding:0;
  display:grid;
  gap:6px;
  color:#bfeaff;
}
#leaderboard li {
  list-style:none;
  display:flex;
  justify-content:space-between;
  font-size:0.9rem;
}
#leaderboard li span { color:#69d7ff; }
.toast { pointer-events:none; align-items:flex-start; justify-content:center; padding-top:12vh; }
.toast-msg {
  display:none;
  font-size:1rem;
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:0.12em;
}
@media (max-width:780px) {
  #game { border-radius:16px; }
  .pill { padding:8px 12px; }
  .stat { min-width:auto; }
}