:root {
  color-scheme: dark;
  --bg-0: #05060a;
  --bg-1: #0b1120;
  --cyan: #2df0ff;
  --violet: #8d5dff;
  --pink: #ff5fd2;
  --text: #dbf2ff;
  --muted: #8aa1bf;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Orbitron', ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1000px 500px at 15% 5%, rgba(45, 240, 255, 0.16), transparent 60%),
    radial-gradient(900px 480px at 85% 95%, rgba(141, 93, 255, 0.2), transparent 60%),
    linear-gradient(145deg, var(--bg-0), var(--bg-1));
  overflow-x: hidden;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at center, black 30%, transparent 100%);
  pointer-events: none;
  opacity: 0.35;
}

.app-shell {
  width: min(1100px, 95vw);
  margin: 24px auto;
  display: grid;
  gap: 14px;
}

.glass {
  background: linear-gradient(140deg, rgba(14, 25, 44, 0.75), rgba(9, 14, 25, 0.72));
  border: 1px solid rgba(146, 193, 255, 0.2);
  border-radius: 16px;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.12),
    0 16px 40px rgba(0,0,0,0.45);
  backdrop-filter: blur(10px);
}

.topbar {
  padding: 16px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

h1 {
  margin: 0;
  letter-spacing: 1.3px;
  font-size: clamp(1rem, 2.8vw, 1.5rem);
  text-shadow: 0 0 16px rgba(45, 240, 255, 0.45);
}

p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.6px;
}

.chip {
  border: 1px solid rgba(45, 240, 255, 0.55);
  color: var(--cyan);
  border-radius: 999px;
  padding: 9px 14px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.9px;
  box-shadow: 0 0 18px rgba(45, 240, 255, 0.26);
}

.arena {
  padding: 12px;
}

canvas {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  border: 1px solid rgba(120, 170, 255, 0.3);
  background: radial-gradient(circle at center, #121c2f, #070b13 68%);
  box-shadow:
    inset 0 0 80px rgba(0, 0, 0, 0.6),
    0 0 32px rgba(45, 240, 255, 0.16),
    0 0 56px rgba(141, 93, 255, 0.14);
  touch-action: none;
}

.status-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.pill {
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.68rem;
  letter-spacing: 0.8px;
  color: var(--muted);
  border: 1px solid rgba(147, 166, 194, 0.35);
  background: rgba(10, 16, 28, 0.7);
}

@media (max-width: 720px) {
  .topbar { align-items: flex-start; flex-direction: column; }
}