:root{
  --bg:#0f1724;
  --panel:#0b1220cc;
  --accent:#00d1b2;
  --accent-2:#6c7cff;
  --muted:#9aa4b2;
  --glow: 0 8px 24px rgba(108,124,255,0.18), 0 2px 8px rgba(0,0,0,0.5);
  --glass: rgba(255,255,255,0.03);
  --danger: #ff6b6b;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background: radial-gradient(1200px 600px at 10% 10%, rgba(108,124,255,0.06), transparent),
              radial-gradient(800px 400px at 90% 80%, rgba(0,209,178,0.04), transparent),
              var(--bg);
  color:#e6eef8;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  padding:24px;
}

.app{
  max-width:1200px;
  margin:0 auto;
  display:flex;
  flex-direction:column;
  gap:18px;
}

/* Topbar */
.topbar{
  display:flex;
  justify-content:space-between;
  align-items:center;
  background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  padding:14px 18px;
  border-radius:12px;
  box-shadow:var(--glow);
}
.title{display:flex; align-items:center; gap:12px}
.logo{font-size:32px}
.title h1{margin:0;font-size:18px}
.subtitle{margin:0;color:var(--muted);font-size:12px}

/* controls */
.controls{display:flex; gap:10px; align-items:center}
.controls select, .controls .btn, .controls .toggle{background:var(--panel); border:1px solid rgba(255,255,255,0.03); color:inherit; padding:8px 10px; border-radius:8px}
.controls .btn{cursor:pointer}
.controls .btn.primary{background:linear-gradient(90deg,var(--accent-2),var(--accent)); color:black; font-weight:600}
.small-label{font-size:11px;color:var(--muted);margin-right:6px}

/* main game area */
.game-area{display:flex; gap:16px}
.sidebar{width:280px; display:flex; flex-direction:column; gap:12px}
.panel{background:var(--glass); padding:14px; border-radius:12px; border:1px solid rgba(255,255,255,0.03)}
.stats h3{margin:0 0 8px 0}
.stat.big{font-size:32px; font-weight:700; color:var(--accent); text-shadow:0 6px 18px rgba(0,209,178,0.08)}
.stat-row{display:flex; justify-content:space-between; margin-top:10px}
.stat-row div{background:rgba(255,255,255,0.02); padding:8px 10px; border-radius:8px; min-width:80px; text-align:center}

.rules ul{margin:8px 0 0 16px; color:var(--muted); font-size:13px}
.leaderboard h3{margin:0 0 8px 0}
#round, #highscore {font-size:18px; color:var(--accent-2); font-weight:700}

/* arena */
.arena{
  flex:1;
  min-height:520px;
  background: linear-gradient(180deg, rgba(255,255,255,0.01), rgba(255,255,255,0.00));
  border-radius:14px;
  border:1px solid rgba(255,255,255,0.03);
  position:relative;
  overflow:hidden;
  box-shadow: 0 10px 30px rgba(2,6,23,0.6);
  padding:16px;
  display:flex;
  align-items:center;
  justify-content:center;
}

/* hint / initial */
.hint{color:var(--muted); text-align:center; font-size:16px}

/* prompt bubbles */
.prompt{
  position:absolute;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:12px 16px;
  border-radius:999px;
  font-weight:700;
  user-select:none;
  cursor:pointer;
  box-shadow: 0 6px 20px rgba(2,8,23,0.6);
  transform-origin:center;
  transition: transform 120ms ease, filter 120ms ease;
}

/* target / decoy styles */
.prompt.target{
  background:linear-gradient(90deg, rgba(0,209,178,0.18), rgba(108,124,255,0.12));
  color: #06111a;
  border: 1px solid rgba(0,209,178,0.32);
  backdrop-filter: blur(6px);
  box-shadow: 0 8px 28px rgba(0,209,178,0.06), 0 4px 10px rgba(108,124,255,0.04);
}
.prompt.decoy{
  background:linear-gradient(90deg, rgba(255,107,107,0.12), rgba(255,255,255,0.02));
  color: #fff;
  border:1px solid rgba(255,107,107,0.22);
}

/* obstacle */
.prompt.obstacle{
  background: linear-gradient(90deg, rgba(255,200,80,0.12), rgba(255,255,255,0.02));
  color:#222;
  border:1px solid rgba(255,200,80,0.22);
}

/* animated glows */
.prompt.glow{
  filter: drop-shadow(0 12px 28px rgba(108,124,255,0.12));
}

/* small label inside prompt */
.prompt .emoji{font-size:20px; margin-right:8px}
.prompt .label{font-size:14px}

/* player badges (for duo) */
.player-badge{
  position:absolute;
  top:12px;
  left:12px;
  background:rgba(0,0,0,0.25);
  padding:6px 8px;
  border-radius:8px;
  font-weight:700;
  display:flex;
  gap:6px;
  align-items:center;
  color:var(--muted);
}
.player-badge.right{left:auto; right:12px}

/* footer */
.footer{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:13px}
.footer a{color:var(--muted); text-decoration:none; margin-left:12px}

/* small buttons style on prompt press */
.prompt:active{transform:scale(0.96)}

/* responsive */
@media (max-width:980px){
  .game-area{flex-direction:column}
  .sidebar{width:100%}
}