* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  height: 100%;
  overflow: hidden;
  background: radial-gradient(circle at 50% 30%, #17263f, #0a1120);
  font-family: system-ui, 'Segoe UI', sans-serif;
}

#game {
  position: absolute;
  border-radius: 6px;
  box-shadow: 0 0 60px rgba(80, 140, 220, 0.25);
  cursor: crosshair;
}

#join-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(6, 12, 24, 0.72);
  backdrop-filter: blur(4px);
  z-index: 10;
}

.panel {
  background: linear-gradient(160deg, #101d33, #0b1424);
  border: 1px solid #2b4a75;
  border-radius: 14px;
  padding: 36px 48px;
  text-align: center;
  color: #dce9fa;
  box-shadow: 0 10px 50px rgba(0, 0, 0, 0.5);
}

.panel h1 {
  font-size: 32px;
  letter-spacing: 2px;
  color: #ffe135;
  text-shadow: 0 2px 0 #7a5c00, 0 0 24px rgba(255, 225, 53, 0.35);
}

.tag {
  margin: 8px 0 22px;
  color: #9db8d8;
  font-style: italic;
}

#name {
  display: block;
  margin: 0 auto 14px;
  padding: 10px 14px;
  font-size: 16px;
  border-radius: 8px;
  border: 1px solid #3a5c8c;
  background: #0a1626;
  color: #fff;
  width: 250px;
  text-align: center;
  outline: none;
}
#name:focus { border-color: #ffe135; }

#play {
  padding: 12px 32px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 1px;
  border: none;
  border-radius: 8px;
  background: linear-gradient(180deg, #ffe135, #f5b800);
  color: #4a3600;
  cursor: pointer;
}
#play:hover { filter: brightness(1.08); }
#play:disabled { opacity: 0.5; cursor: default; }

#status {
  min-height: 20px;
  margin-top: 12px;
  color: #ff9d9d;
  font-size: 14px;
}

.help {
  margin-top: 18px;
  font-size: 13px;
  color: #8aa6cc;
  line-height: 1.8;
}
.help b { color: #cfe2ff; }