:root {
  --bg: #050816;
  --panel: rgba(10, 18, 42, .78);
  --panel-strong: rgba(10, 18, 42, .95);
  --cyan: #27f5ff;
  --pink: #ff2bd6;
  --green: #70ff7d;
  --gold: #ffd166;
  --red: #ff3b5c;
  --text: #e9f8ff;
  --muted: #93a4c7;
}
* { box-sizing: border-box; }
html, body { min-height: 100%; margin: 0; }
body {
  font-family: Inter, system-ui, -apple-system, Segoe UI, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 15%, rgba(39,245,255,.22), transparent 32rem),
    radial-gradient(circle at 82% 8%, rgba(255,43,214,.18), transparent 28rem),
    radial-gradient(circle at 45% 90%, rgba(112,255,125,.10), transparent 30rem),
    linear-gradient(135deg, #02030a, #09122d 45%, #02030a);
  overflow-x: hidden;
}
.stars, .stars::before, .stars::after {
  position: fixed; inset: 0; pointer-events: none; content: ""; opacity: .55;
  background-image: radial-gradient(#fff 1px, transparent 1px);
  background-size: 76px 76px;
  animation: drift 24s linear infinite;
}
.stars::before { background-size: 112px 112px; animation-duration: 38s; opacity: .38; }
.stars::after { background-size: 42px 42px; animation-duration: 18s; opacity: .26; }
@keyframes drift { to { transform: translate3d(-76px, 76px, 0); } }
.shell { width: min(1180px, calc(100% - 28px)); margin: 0 auto; padding: 28px 0 34px; position: relative; z-index: 1; }
.hero { display: grid; grid-template-columns: 1fr auto; gap: 22px; align-items: end; margin-bottom: 18px; }
.eyebrow { color: var(--cyan); text-transform: uppercase; letter-spacing: .28em; font-weight: 800; margin: 0 0 7px; }
h1 { font-family: Orbitron, sans-serif; font-size: clamp(3.1rem, 10vw, 7.5rem); line-height: .86; margin: 0; text-transform: uppercase; text-shadow: 0 0 28px rgba(39,245,255,.44), 0 0 52px rgba(255,43,214,.25); }
.tagline { max-width: 730px; color: #c8d7ff; font-size: clamp(1rem, 2.1vw, 1.22rem); line-height: 1.55; margin: 18px 0 0; }
.status-card { min-width: 270px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; padding: 12px; border: 1px solid rgba(39,245,255,.28); border-radius: 22px; background: var(--panel); box-shadow: 0 18px 60px rgba(0,0,0,.35), inset 0 0 30px rgba(39,245,255,.06); backdrop-filter: blur(15px); }
.status-card div { padding: 10px 8px; border-radius: 14px; background: rgba(255,255,255,.045); text-align: center; }
.status-card span { display:block; color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .12em; }
.status-card strong { display:block; font: 800 1.28rem Orbitron, sans-serif; margin-top: 4px; }
.game-card { border: 1px solid rgba(255,255,255,.12); border-radius: 30px; background: linear-gradient(180deg, rgba(12,22,54,.84), rgba(3,6,17,.92)); box-shadow: 0 24px 90px rgba(0,0,0,.48), 0 0 0 1px rgba(39,245,255,.08) inset; padding: 16px; }
.hud { display: flex; gap: 12px; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.meter { flex:1; min-height: 50px; border-radius: 18px; border: 1px solid rgba(39,245,255,.22); background: rgba(0,0,0,.25); display:flex; align-items:center; padding: 0 16px; color: var(--green); font-family: Orbitron, sans-serif; }
.actions { display:flex; gap:10px; }
button { appearance: none; border: 1px solid rgba(255,255,255,.18); background: rgba(255,255,255,.07); color: var(--text); border-radius: 16px; padding: 13px 17px; font-weight: 800; cursor: pointer; box-shadow: 0 8px 22px rgba(0,0,0,.25); touch-action: manipulation; }
button:hover, button:focus-visible { transform: translateY(-1px); border-color: var(--cyan); outline: none; }
button.primary { background: linear-gradient(135deg, var(--cyan), var(--pink)); color: #02030a; border: 0; }
.board-wrap { position: relative; width: min(100%, 760px); margin: 0 auto; }
canvas { display: block; width: 100%; max-height: 74vh; aspect-ratio: 1; border-radius: 24px; background: #050816; border: 1px solid rgba(39,245,255,.34); box-shadow: inset 0 0 40px rgba(39,245,255,.12), 0 0 60px rgba(39,245,255,.14); }
.overlay { position:absolute; inset:0; display:none; align-items:center; justify-content:center; padding: 18px; border-radius:24px; background: rgba(2,3,10,.66); backdrop-filter: blur(7px); }
.overlay.show { display:flex; }
.panel { max-width: 440px; text-align:center; padding: 26px; border-radius: 24px; background: var(--panel-strong); border: 1px solid rgba(39,245,255,.28); box-shadow: 0 0 50px rgba(39,245,255,.12); }
.panel h2 { font: 900 2rem Orbitron, sans-serif; margin: 0 0 10px; }
.panel p { color: #c9d5f5; line-height:1.5; }
.touch-controls { margin: 16px auto 0; width: 210px; display:grid; grid-template-columns: repeat(3, 64px); gap: 8px; justify-content:center; }
.touch-controls button { min-height: 58px; font-size:1.25rem; }
.instructions { display:grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 16px; }
.instructions article { padding: 18px; border-radius: 22px; background: rgba(255,255,255,.055); border: 1px solid rgba(255,255,255,.10); }
.instructions h3 { margin:0 0 8px; font-family: Orbitron, sans-serif; color: var(--cyan); }
.instructions p { margin:0; color:#c4d0ed; line-height:1.45; }
@media (max-width: 780px) {
  .shell { width: min(100% - 18px, 760px); padding-top: 14px; }
  .hero { grid-template-columns: 1fr; }
  .status-card { min-width: 0; }
  .hud { flex-direction: column; align-items: stretch; }
  .actions { display:grid; grid-template-columns: 1fr 1fr; }
  .instructions { grid-template-columns: 1fr; }
  h1 { font-size: clamp(2.8rem, 16vw, 5.2rem); }
  .tagline { margin-top: 12px; }
  .game-card { padding: 10px; border-radius: 22px; }
  canvas, .overlay { border-radius: 18px; }
}