body {
  margin: 0;
  padding: 0;
  background: #000a1a;
  color: #e8e8ea;
  font-family: system-ui, -apple-system, sans-serif;
  overflow-x: hidden;
}

.wrap {
  min-height: 100vh;
  padding: 2rem 1rem;
  position: relative;
}

.back-btn {
  position: absolute;
  top: 20px;
  left: 20px;
  padding: 10px 20px;
  background: linear-gradient(135deg, #3a86ff, #06ffa5);
  color: #0b0b12;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.9rem;
  border: 2px solid rgba(255,255,255,0.2);
  box-shadow: 0 4px 15px rgba(58,199,255,0.3);
  transition: all 0.3s ease;
  z-index: 100;
}

.back-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(58,199,255,0.5);
}

.leaderboard-sidebar {
  position: fixed;
  right: 20px;
  top: 100px;
  width: 280px;
  max-height: calc(100vh - 140px);
  overflow-y: auto;
  background: linear-gradient(145deg, rgba(20,24,39,0.95), rgba(26,31,53,0.9));
  border: 2px solid rgba(58,199,255,0.4);
  border-radius: 15px;
  padding: 1rem;
  box-shadow: 0 10px 40px rgba(0,0,0,0.8), 0 0 30px rgba(58,199,255,0.2);
  backdrop-filter: blur(10px);
  z-index: 50;
}

@media (max-width: 1400px) {
  .leaderboard-sidebar {
    position: relative;
    right: auto;
    top: auto;
    margin: 1rem auto;
    max-width: 600px;
  }
}

.game-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem;
  text-align: center;
}

.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding: 1rem;
  background: linear-gradient(145deg, rgba(20,24,39,0.95), rgba(26,31,53,0.9));
  border: 2px solid rgba(58,199,255,0.4);
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5), 0 0 25px rgba(58,199,255,0.2);
  flex-wrap: wrap;
  gap: 1rem;
}

.score-display {
  display: flex;
  gap: 1.5rem;
  font-size: 1.1rem;
  font-weight: 700;
  font-family: monospace;
  flex-wrap: wrap;
}

.score-display span {
  color: #06ffa5;
  text-shadow: 0 0 10px rgba(6,255,165,0.5);
}

.score-display span span {
  color: #3a86ff;
  font-size: 1.3rem;
  text-shadow: 0 0 15px rgba(58,199,255,0.6);
}

.game-layout {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 1.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.side-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.panel-box {
  background: linear-gradient(145deg, rgba(20,24,39,0.95), rgba(26,31,53,0.9));
  border: 2px solid rgba(58,199,255,0.4);
  border-radius: 12px;
  padding: 1rem;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5), 0 0 20px rgba(58,199,255,0.2);
}

.panel-box h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1rem;
  color: #06ffa5;
  text-shadow: 0 0 10px rgba(6,255,165,0.5);
  font-family: monospace;
  letter-spacing: 2px;
}

#game-canvas {
  background: radial-gradient(ellipse at center, #0a0f20, #050810);
  border: 3px solid rgba(58,199,255,0.6);
  border-radius: 8px;
  box-shadow: 
    0 20px 60px rgba(0,0,0,0.8),
    0 0 40px rgba(58,199,255,0.3),
    inset 0 0 30px rgba(0,0,0,0.9);
  display: block;
  image-rendering: crisp-edges;
  image-rendering: pixelated;
}

#hold-canvas,
#next-canvas {
  background: radial-gradient(ellipse at center, #0a0f20, #050810);
  border: 2px solid rgba(58,199,255,0.4);
  border-radius: 6px;
  box-shadow: inset 0 0 20px rgba(0,0,0,0.9);
  display: block;
  margin: 0 auto;
}

.game-controls {
  text-align: center;
  padding: 1.5rem;
  background: linear-gradient(145deg, rgba(20,24,39,0.95), rgba(26,31,53,0.9));
  border: 2px solid rgba(58,199,255,0.4);
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5), 0 0 25px rgba(58,199,255,0.2);
}

.game-controls p {
  margin: 0.5rem 0;
  font-size: 1rem;
  color: #06ffa5;
}

.control-hint {
  font-size: 0.85rem !important;
  color: #8aa !important;
  font-family: monospace;
}

.control-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.game-btn {
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: 700;
  border: 2px solid rgba(58,199,255,0.6);
  border-radius: 8px;
  background: linear-gradient(145deg, rgba(58,134,255,0.2), rgba(6,255,165,0.1));
  color: #06ffa5;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.5), 0 0 15px rgba(58,199,255,0.2);
  font-family: monospace;
}

.game-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(58,199,255,0.4), 0 0 25px rgba(58,199,255,0.3);
  border-color: #06ffa5;
  background: linear-gradient(145deg, rgba(58,134,255,0.3), rgba(6,255,165,0.2));
}

.game-btn:active {
  transform: translateY(0);
}

.game-btn.primary {
  background: linear-gradient(135deg, #3a86ff, #06ffa5);
  color: #0b0b12;
  border-color: rgba(255,255,255,0.3);
  box-shadow: 0 4px 15px rgba(58,199,255,0.4), inset 0 1px 0 rgba(255,255,255,0.3);
}

.game-btn.primary:hover {
  box-shadow: 0 6px 20px rgba(58,199,255,0.6), inset 0 1px 0 rgba(255,255,255,0.4);
}

@media (max-width: 768px) {
  .game-layout {
    flex-direction: column;
    align-items: center;
  }
  
  .side-panel {
    flex-direction: row;
  }
  
  .game-header {
    flex-direction: column;
  }
  
  .score-display {
    justify-content: center;
  }
  
  #game-canvas {
    max-width: 100%;
    height: auto;
  }
}