.press-start-2p-regular {
  font-family: "Press Start 2P", system-ui;
  font-weight: 400;
  font-style: normal;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: radial-gradient(circle at center, #111 0%, #000 100%);
  font-family: 'Press Start 2P', monospace;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  position: relative;
  overflow: hidden;
}
/* Three-column layout: Left (Hold), Center (Game), Right (Next) */
#game-container {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
#left-panel, #right-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
}
/* Game grid */
#game {
  display: grid;
  grid-template-rows: repeat(20, 30px);
  grid-template-columns: repeat(10, 30px);
  gap: 1px;
  background: #222;
  border: 3px solid #44f;
  box-shadow: 0 0 30px #44f;
  position: relative;
  z-index: 1;
}
.cell {
  width: 30px;
  height: 30px;
  background-color: #111;
}
/* Preview grids for Hold and Next */
.preview-container {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.preview-title {
  margin-bottom: 5px;
}
.preview-grid {
  display: grid;
  grid-template-rows: repeat(4, 20px);
  grid-template-columns: repeat(4, 20px);
  gap: 2px;
  background: #222;
  border: 2px solid #44f;
  padding: 5px;
  max-width: 98px;
}
.preview-cell {
  width: 20px;
  height: 20px;
  background-color: #111;
}
/* Start Screen Overlay */
#start-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 3;
}

#character-select {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

#start-select {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

button {
  background: #08f;
  color: #fff;
  border: 2px solid #fff;
  padding: 10px 20px;
  margin-top: 20px;
  cursor: pointer;
  font-size: 16px;
  transition: background 0.2s;
}
button:hover { background: #0cf; }

/* Power-Up Overlay (unchanged) */
#powerup-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 2;
}
.powerup-btn {
  background: #08f;
  color: #fff;
  border: 2px solid #fff;
  padding: 10px 20px;
  margin: 8px;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.2s;
}
.powerup-btn:hover { background: #0cf; }

@keyframes shake {
  0% { transform: translate(0px, 0px); }
  20% { transform: translate(-5px, 5px); }
  40% { transform: translate(5px, -5px); }
  60% { transform: translate(-5px, 5px); }
  80% { transform: translate(5px, -5px); }
  100% { transform: translate(0px, 0px); }
}
.shake { animation: shake 0.5s; }

:root {
  --neon-main: #0ff;
  --neon-secondary: #f0f;
  --neon-accent: #ff0;
  --neon-bg: #111;
}

body {
  background: radial-gradient(circle at center, #111 0%, #000 100%);
  animation: bgPulse 10s infinite alternate ease-in-out;
}

@keyframes bgPulse {
  0% { background: radial-gradient(circle at center, #111 0%, #000 100%); }
  100% { background: radial-gradient(circle at center, #220033 0%, #000 100%); }
}

#game {
  border: 3px solid var(--neon-main);
  box-shadow: 0 0 20px var(--neon-main), 0 0 40px var(--neon-main);
  transition: border-color 0.5s, box-shadow 0.5s;
}

.preview-grid {
  border: 2px solid var(--neon-main);
  box-shadow: 0 0 10px var(--neon-main);
  transition: border-color 0.5s, box-shadow 0.5s;
}

button, .powerup-btn {
  font-family: 'Press Start 2P', monospace;
  background: linear-gradient(45deg, var(--neon-main), var(--neon-secondary));
  color: #000;
  border: none;
  text-shadow: 0 0 3px #fff;
  box-shadow: 0 0 8px var(--neon-accent);
}

button:hover, .powerup-btn:hover {
  background: linear-gradient(45deg, var(--neon-secondary), var(--neon-accent));
  box-shadow: 0 0 12px var(--neon-accent), 0 0 20px var(--neon-accent);
}

/* Mobile responsiveness */
@media (max-width: 768px) {
  body {
    flex-direction: column;
    justify-content: flex-start;
    height: auto;
    padding: 10px 0;
  }
  #game-container {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }
  #game {
    transform: scale(0.8);
    transform-origin: top center;
  }
  .preview-grid {
    transform: scale(0.8);
    transform-origin: top center;
  }
}

#character-select {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

.character-card {
  width: 200px;
  padding: 2px;
  border: 2px solid #0ff;
  background: #111;
  color: #0ff;
  font-family: 'Press Start 2P', monospace;
  font-size: xx-small;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 0 10px #0ff;
}

.character-card:hover {
  transform: scale(1.05);
  box-shadow: 0 0 20px #0ff;
}

.character-card[data-character="fire"] {
  border-color: #f44;
  color: #f44;
  box-shadow: 0 0 10px #f44;
}
.character-card[data-character="water"] {
  border-color: #4cf;
  color: #4cf;
  box-shadow: 0 0 10px #4cf;
}
.character-card[data-character="earth"] {
  border-color: #fa4;
  color: #fa4;
  box-shadow: 0 0 10px #fa4;
}
.character-card[data-character="air"] {
  border-color: #fff;
  color: #fff;
  box-shadow: 0 0 10px #fff;
}