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

body {
  background-color: #1a1a2e;
  color: #fff;
  font-family: 'Press Start 2P', cursive;
  min-height: 100vh;
  overflow-x: hidden;
}

/* CRT Scanline Effect */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.15),
    rgba(0, 0, 0, 0.15) 1px,
    transparent 1px,
    transparent 2px
  );
  pointer-events: none;
  z-index: 1000;
}

#app {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
}

.screen {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  width: 100%;
  max-width: 1200px;
}

.screen.active {
  display: flex;
}

h1 {
  font-size: 2rem;
  text-align: center;
  color: #0ff;
  text-shadow: 4px 4px 0 #ff00ff;
  margin-bottom: 30px;
}

h2 {
  font-size: 1.2rem;
  color: #0f0;
  text-shadow: 2px 2px 0 #004400;
}

h3 {
  font-size: 1rem;
  color: #ff0;
  text-shadow: 2px 2px 0 #444400;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 15px;
}

label {
  font-size: 0.7rem;
  color: #888;
}

input {
  background: #0a0a1a;
  border: 2px solid #333;
  color: #fff;
  font-family: 'Press Start 2P', cursive;
  font-size: 0.8rem;
  padding: 15px;
  text-align: center;
  outline: none;
}

input:focus {
  border-color: #0ff;
}

button {
  background: #ff00ff;
  border: 4px solid #fff;
  color: #fff;
  font-family: 'Press Start 2P', cursive;
  font-size: 1rem;
  padding: 15px 30px;
  cursor: pointer;
  text-transform: uppercase;
  transition: transform 0.1s;
}

button:hover {
  transform: scale(1.05);
  background: #0ff;
  color: #000;
}

button:active {
  transform: scale(0.95);
}

#player-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 20px 0;
  min-height: 150px;
}

.player-item {
  background: #0a0a1a;
  border: 2px solid #333;
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
}

.player-item .name {
  color: #0ff;
}

.player-item .status {
  color: #888;
}

.player-item .status.ready {
  color: #0f0;
}

/* Battle Grid - Responsive Layout */
#battle-grid {
  display: grid;
  gap: 20px;
  justify-content: center;
  margin-top: 20px;
}

#battle-grid.grid-2x2 {
  grid-template-columns: repeat(2, 1fr);
}

#battle-grid.grid-2x4 {
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: repeat(2, 1fr);
}

.player-board {
  background: #000;
  border: 4px solid #333;
  padding: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.player-board.active {
  border-color: #0ff;
}

.player-board.eliminated {
  border-color: #f00;
  opacity: 0.5;
}

.player-board canvas {
  display: block;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.board-info {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 5px;
  font-size: 0.6rem;
}

.board-info .name {
  color: #0ff;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.board-info .stats {
  color: #888;
}

.next-piece-container {
  display: flex;
  align-items: center;
  gap: 5px;
}

.next-piece-container canvas {
  border: 1px solid #333;
}

#game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 10px 20px;
  background: #0a0a1a;
  border: 2px solid #333;
  margin-bottom: 20px;
}

#game-header span {
  font-size: 0.8rem;
  color: #0f0;
}

#game-header button {
  font-size: 0.7rem;
  padding: 10px 15px;
}

#game-status {
  margin-top: 20px;
  padding: 15px;
  background: #0a0a1a;
  border: 2px solid #333;
  text-align: center;
  font-size: 0.8rem;
  color: #ff0;
}

#winner-display {
  margin: 20px 0;
  font-size: 1.2rem;
}

#final-scores {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 20px 0;
  width: 100%;
  max-width: 400px;
}

#final-scores .score-item {
  background: #0a0a1a;
  border: 2px solid #333;
  padding: 10px 15px;
  display: flex;
  justify-content: space-between;
}

#final-scores .score-item.winner {
  border-color: #0f0;
  color: #0f0;
}

/* Garbage row animation */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

.player-board.shake {
  animation: shake 0.2s ease-in-out;
}

/* Flash effect for row clear */
@keyframes flash {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.player-board.flash {
  animation: flash 0.3s ease-in-out;
}