@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@500;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap');

:root {
  --bg-dark: #070715;
  --bg-glow: #12122a;
  --neon-blue: #00f0ff;
  --neon-blue-glow: rgba(0, 240, 255, 0.5);
  --neon-pink: #ff00c8;
  --neon-pink-glow: rgba(255, 0, 200, 0.5);
  --neon-purple: #8f00ff;
  --danger: #ff3c3c;
  --accent: #39ff14;
  --accent-glow: rgba(57, 255, 20, 0.5);
  --text-light: #e0e0e0;
  --text-glow: rgba(224, 224, 224, 0.2);
  --grid-light: #2d2d4d;
}

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

body {
  margin: 0;
  font-family: 'Orbitron', sans-serif;
  background: linear-gradient(135deg, var(--bg-dark), var(--bg-glow));
  color: var(--text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  overflow: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: linear-gradient(var(--grid-light) 1px, transparent 1px),
                    linear-gradient(90deg, var(--grid-light) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.1;
  z-index: -1;
  pointer-events: none;
}

body.slow-motion {
  filter: brightness(1.3) contrast(1.5) saturate(1.5);
  transition: filter 0.3s ease;
}

.arena {
  text-align: center;
  background: rgba(10, 10, 30, 0.85);
  padding: 30px 35px;  
  border-radius: 20px;
  border: 2px solid var(--neon-purple);
  box-shadow: 0 0 40px var(--neon-purple), inset 0 0 20px rgba(143, 0, 255, 0.3);
  max-width: 580px;  
  width: 100%;
  position: relative;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

h1 {
  color: var(--neon-pink);
  font-size: 2.2rem;
  text-shadow: 0 0 15px var(--neon-pink);
  margin-bottom: 15px;  
  letter-spacing: 2px;
  animation: glow 2s infinite alternate;
}

@keyframes glow {
  0% { text-shadow: 0 0 10px var(--neon-pink); }
  100% { text-shadow: 0 0 20px var(--neon-pink), 0 0 30px var(--neon-pink-glow); }
}

.instructions {
  margin-bottom: 20px;  
  font-size: 0.95rem;  
  line-height: 1.5;  
  opacity: 0.9;
  background: rgba(10, 10, 30, 0.5);  
  padding: 12px;  
  border-radius: 10px;
  border: 1px solid rgba(143, 0, 255, 0.2); 
}

.instructions p {
  margin-bottom: 8px;  
}

.instructions ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;  
  margin-top: 8px;
}

.instructions li {
  background: rgba(20, 20, 40, 0.6);
  padding: 6px 12px;  
  border-radius: 10px;
  border: 1px solid var(--text-glow);
}

.status-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px; 
  font-size: 1.1rem;
  margin-bottom: 15px;  
  color: var(--accent);
  text-shadow: 0 0 8px var(--accent-glow);
  padding: 10px;  
  background: rgba(10, 10, 20, 0.5);
  border-radius: 10px;
  border: 1px solid rgba(57, 255, 20, 0.2);  
}

.status-bar > div {
  display: flex;
  align-items: center;
  justify-content: center;
}

.high-score-display {
  margin-bottom: 12px;  
  font-size: 1.05rem;  
  color: var(--neon-blue);  
  text-shadow: 0 0 8px var(--neon-blue-glow);
}

.floating-score {
  position: absolute;
  font-family: 'Press Start 2P', cursive;
  font-size: 1.2rem;
  z-index: 100;
  animation: float-up 0.8s ease-out forwards;
  pointer-events: none;
  text-shadow: 0 0 5px currentColor;
}

@keyframes float-up {
  0% { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(-60px); }
}

.progress-container {
  background: var(--grid-light);
  height: 12px;
  width: 100%;
  border-radius: 6px;
  overflow: hidden;
  margin: 12px 0 20px;  
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.5);
}

.progress-bar {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--neon-blue), #00c8ff);
  box-shadow: 0 0 10px var(--neon-blue-glow);
  transition: width 0.5s ease;
}

.progress-bar.danger {
  background: linear-gradient(90deg, #ff3c3c, #ff6b6b);
  box-shadow: 0 0 10px rgba(255, 60, 60, 0.5);
}

.streak-bar {
  height: 8px;
  background: linear-gradient(90deg, var(--neon-pink), #ff66cc);
  width: 0%;
  margin-bottom: 20px;  
  border-radius: 4px;
  transition: width 0.3s ease;
  box-shadow: 0 0 10px var(--neon-pink-glow);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;  
  margin: 25px 0;  
}

.portal {
  background: radial-gradient(circle, var(--grid-light) 0%, #000 100%);
  border: 3px solid var(--neon-blue);
  border-radius: 50%;
  height: 110px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 0 15px var(--neon-blue-glow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
}

.portal:hover {
  transform: scale(1.05);
  box-shadow: 0 0 20px var(--neon-blue);
}

.portal:active {
  transform: scale(0.98);
}

@keyframes pulse-border {
  0% { box-shadow: 0 0 15px var(--neon-blue-glow); }
  50% { box-shadow: 0 0 25px var(--neon-blue); }
  100% { box-shadow: 0 0 15px var(--neon-blue-glow); }
}

.portal {
  animation: pulse-border 2s infinite;
}

.creature {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  font-size: 3.8rem;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  user-select: none;
  filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.7));
  z-index: 5;
  cursor: pointer;
  animation: none; 
}

.creature.hit {
  transform: translateX(-50%) scale(0.7) rotate(15deg);
  opacity: 0.7;
  filter: blur(2px);
}

.portal::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80%;
  height: 80%;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  z-index: 1;
}

.controls {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 15px;  
  margin: 25px 0; 
}

.controls button,
.difficulty button,
#play-again {
  padding: 12px 24px;  
  background: rgba(0, 0, 0, 0.5);
  color: var(--neon-blue);
  border: 2px solid var(--neon-blue);
  border-radius: 30px;
  font-weight: bold;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s ease;
  text-shadow: 0 0 10px var(--neon-blue);
  font-family: 'Orbitron', sans-serif;
  letter-spacing: 1px;
  position: relative;
  overflow: hidden;
}

.controls button::before,
.difficulty button::before,
#play-again::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  border-radius: 30px;
  background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple), var(--neon-pink), var(--neon-blue));
  background-size: 400%;
  z-index: -1;
  animation: animate-border 4s linear infinite;
  opacity: 0;
  transition: opacity 0.3s ease;
}

@keyframes animate-border {
  0% { background-position: 0%; }
  100% { background-position: 400%; }
}

.controls button:hover::before,
.difficulty button:hover::before,
#play-again:hover::before {
  opacity: 1;
}

.controls button:hover,
.difficulty button:hover,
#play-again:hover {
  color: #000;
  background: var(--neon-blue);
  box-shadow: 0 0 20px var(--neon-blue);
  transform: translateY(-2px);
}

.controls button:active,
.difficulty button:active,
#play-again:active {
  transform: translateY(1px);
  box-shadow: 0 0 10px var(--neon-blue);
}

.diff-btn.active {
  border-color: var(--neon-pink);
  color: var(--neon-pink);
  text-shadow: 0 0 10px var(--neon-pink);
  background: rgba(255, 0, 200, 0.1);
}

.difficulty {
  display: flex;
  justify-content: center;
  margin-top: 10px;
  gap: 18px;  
}

.game-over {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.85);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}

.modal {
  background: linear-gradient(135deg, #111130, #1a1a40);
  color: var(--neon-blue);
  padding: 40px 50px;  
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 0 40px var(--neon-pink);
  border: 2px solid var(--neon-pink);
  max-width: 400px;
  width: 100%;
  animation: modal-appear 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes modal-appear {
  0% { transform: scale(0.8); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.modal h2 {
  font-size: 2rem;
  margin-bottom: 25px;  
  color: var(--neon-pink);
  text-shadow: 0 0 15px var(--neon-pink);
}

.modal p {
  margin: 15px 0;
  font-size: 1.2rem;
}

#final-score {
  font-size: 2.8rem;  
  color: var(--accent);
  text-shadow: 0 0 10px var(--accent);
  font-weight: bold;
  display: block;
  margin: 20px 0;  
}

#high-score-message {
  color: var(--accent);
  font-weight: bold;
  min-height: 30px;
  font-size: 1.3rem;
  animation: pulse 1s infinite alternate;
  margin-bottom: 20px;  
}

.sound-toggle {
  position: absolute;
  top: 20px;  
  right: 20px;  
  background: transparent;
  border: 2px solid var(--accent);
  border-radius: 50%;
  width: 42px;  
  height: 42px;  
  font-size: 1.5rem;
  color: var(--accent);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.sound-toggle:hover {
  background: var(--accent);
  color: #000;
  box-shadow: 0 0 15px var(--accent-glow);
}

.combo {
  position: relative;
}

.multiplier {
  font-size: 1.2rem;
  color: var(--neon-pink);
  text-shadow: 0 0 8px var(--neon-pink);
  font-weight: bold;
}

#combo-count {
  font-weight: bold;
  transition: all 0.2s ease;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

.combo-pulse {
  animation: pulse 0.3s ease-in-out;
}

@media (max-width: 600px) {
  .arena {
    padding: 25px 20px;  
    margin: 15px;
  }
  
  h1 {
    font-size: 1.8rem;
    margin-bottom: 12px;  
  }
  
  .grid {
    gap: 15px;  
    margin: 20px 0;  
  }
  
  .portal {
    height: 90px;
  }
  
  .creature {
    font-size: 3rem;
  }
  
  .controls button, 
  .difficulty button {
    padding: 10px 18px;  
    font-size: 0.9rem;
  }
  
  .status-bar {
    font-size: 0.9rem;
    margin-bottom: 12px;  
  }
  
  .instructions {
    padding: 8px;  
    font-size: 0.85rem;  
    margin-bottom: 15px;  
  }
  
  .instructions ul {
    gap: 8px;  
  }
  
  .instructions li {
    padding: 4px 8px;  
  }
  
  .controls {
    margin: 20px 0; 
    gap: 10px;  
  }
  
  .difficulty {
    gap: 12px;  
  }
  
  .instructions {
    display: block;  
  }
  
  .instructions p {
    margin-bottom: 5px;  
  }
  
  .sound-toggle {
    top: 15px;
    right: 15px;
    width: 36px;  
    height: 36px;  
  }
}

.achievement {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.8);
  color: var(--accent);
  padding: 12px 24px;  
  border-radius: 20px;
  font-size: 1.1rem;
  text-align: center;
  box-shadow: 0 0 20px var(--accent-glow);
  z-index: 200;
  animation: achievement-appear 3s ease-in-out forwards;
}

@keyframes achievement-appear {
  0% { transform: translateX(-50%) translateY(50px); opacity: 0; }
  20% { transform: translateX(-50%) translateY(0); opacity: 1; }
  80% { transform: translateX(-50%) translateY(0); opacity: 1; }
  100% { transform: translateX(-50%) translateY(-20px); opacity: 0; }
}

@keyframes bounceIn {
  0% {
    transform: translateX(-50%) scale(0.6);
    opacity: 0;
  }
  60% {
    transform: translateX(-50%) scale(1.2);
    opacity: 1;
  }
  80% {
    transform: translateX(-50%) scale(0.9);
  }
  100% {
    transform: translateX(-50%) scale(1);
  }
}