@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;700&display=swap');

:root {
  --bg: #0f172a;
  --panel: #111827cc;
  --accent: #f59e0b;
  --text: #e5e7eb;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Nunito', system-ui, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #1e293b, #0b1020 60%);
  min-height: 100vh;
}

.bg {
  position: fixed;
  inset: 0;
  background: url('https://images.unsplash.com/photo-1542051841857-5f90071e7989?auto=format&fit=crop&w=1600&q=80') center/cover no-repeat;
  filter: blur(10px) brightness(0.4);
  z-index: -1;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px 60px;
  text-align: center;
}

h1 {
  font-size: clamp(28px, 3vw, 42px);
  margin-bottom: 6px;
}

.subtitle { color: #cbd5e1; margin-bottom: 24px; }

.hud {
  display: flex;
  gap: 16px;
  justify-content: center;
  align-items: center;
  margin-bottom: 16px;
  background: var(--panel);
  padding: 12px 16px;
  border-radius: 12px;
  backdrop-filter: blur(6px);
}

button {
  background: var(--accent);
  border: none;
  color: #111827;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 10px;
  cursor: pointer;
}

#arena {
  position: relative;
  width: min(720px, 90vw);
  height: 420px;
  margin: 0 auto;
  border-radius: 16px;
  background: #0b1224aa;
  border: 1px solid #1f2937;
  overflow: hidden;
}

.sushi {
  position: absolute;
  font-size: 36px;
  cursor: pointer;
  user-select: none;
  transition: transform .2s ease;
}

.sushi:hover { transform: scale(1.2); }

.hint { color: #94a3b8; margin-top: 16px; }