web/src/index.css

@tailwind base;
@tailwind components;
@tailwind utilities;

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Chess board - INCREASED SIZE */
.chess-board {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  grid-template-rows: repeat(8, 1fr);
  width: 100%;
  max-width: 800px !important; /* Force increased size */
  aspect-ratio: 1 / 1;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  position: relative; /* For loading overlay */
}

/* Chess squares */
.chess-square {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: all 0.2s;
}

.chess-square:hover {
  filter: brightness(1.1);
}

/* Chess pieces - INCREASED SIZE */
.chess-piece {
  width: 85% !important; /* Increased from 80% */
  height: 85% !important; /* Increased from 80% */
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  transition: transform 0.2s;
}

.chess-piece:hover {
  transform: scale(1.1);
}

/* Move indicators */
.move-dot {
  position: absolute;
  width: 25%;
  height: 25%;
  border-radius: 50%;
  background-color: rgba(0, 128, 0, 0.6);
  opacity: 0.8;
}

.square-highlight {
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: rgba(20, 85, 30, 0.5);
  opacity: 0.7;
}

.square-selected {
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 0, 0.4);
  opacity: 0.7;
}

/* Hint indicators */
.hint-square {
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 128, 255, 0.5);
  opacity: 0.7;
  animation: pulseHint 1.5s infinite ease-in-out;
  z-index: 1;
}

/* Board labels - IMPROVED POSITIONING */
/* Option 1: Labels outside the board */
.chess-board-container {
  position: relative;
  width: 880px;
  max-width: 100%;
  margin: 0 auto;
}

.chess-board {
  margin: 30px;
}

.rank-labels {
  position: absolute;
  top: 30px;
  left: 0;
  display: flex;
  flex-direction: column;
  height: calc(100% - 60px);
}

.file-labels {
  position: absolute;
  bottom: 0;
  left: 30px;
  display: flex;
  width: calc(100% - 60px);
}

.rank-label, .file-label {
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1rem;
  font-weight: bold;
  color: #f3f4f6;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.7);
}

.rank-label {
  height: 12.5%;
}

.file-label {
  width: 12.5%;
}

/* Option 2: Labels inside the board (improved) */
.square-rank-label, .square-file-label {
  position: absolute;
  font-size: 0.9rem;
  font-weight: bold;
  pointer-events: none;
  z-index: 2;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.7);
  color: rgba(255, 255, 255, 0.9);
}

.square-rank-label {
  left: 5px;
  top: 5px;
}

.square-file-label {
  right: 5px;
  bottom: 5px;
}

.light-square .square-rank-label, .light-square .square-file-label {
  color: rgba(0, 0, 0, 0.7);
  text-shadow: 1px 1px 2px rgba(255, 255, 255, 0.9);
}

.dark-square .rank-label, .dark-square .file-label {
  color: rgba(255, 255, 255, 0.9);
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.7);
}

/* Animations */
@keyframes movePiece {
  0% {
    transform: scale(1);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.1);
    opacity: 1;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes highlightSquare {
  0% {
    box-shadow: inset 0 0 0 3px rgba(255, 255, 0, 0);
  }
  50% {
    box-shadow: inset 0 0 0 3px rgba(255, 255, 0, 0.7);
  }
  100% {
    box-shadow: inset 0 0 0 3px rgba(255, 255, 0, 0.4);
  }
}

@keyframes pulseHint {
  0% {
    background-color: rgba(0, 128, 0, 0.4);
  }
  50% {
    background-color: rgba(0, 128, 0, 0.7);
  }
  100% {
    background-color: rgba(0, 128, 0, 0.4);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Animation classes */
.moving-piece {
  animation: movePiece 0.5s ease-in-out;
}

.highlight-square {
  animation: highlightSquare 1s ease-in-out;
  animation-iteration-count: 2;
}

.fade-in {
  animation: fadeIn 0.3s ease-in-out;
}

.last-move {
  box-shadow: inset 0 0 0 3px rgba(255, 215, 0, 0.5);
}

/* Game controls */
.game-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.control-button {
  padding: 0.5rem 1rem;
  border-radius: 0.25rem;
  font-weight: 500;
  transition: all 0.2s;
}

.control-button:hover {
  transform: translateY(-2px);
}

/* Game info panel */
.game-info {
  padding: 1rem;
  border-radius: 0.5rem;
  background-color: white;
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

/* Status message */
.status-message {
  font-size: 1.2rem;
  font-weight: bold;
  padding: 0.5rem;
  margin-bottom: 1rem;
  text-align: center;
}

/* Loading spinner */
.spinner {
  border: 4px solid rgba(0, 0, 0, 0.1);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border-left-color: #09f;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Responsive design */
@media (max-width: 768px) {
  .chess-board {
    max-width: 100% !important;
  }
  
  .game-layout {
    flex-direction: column;
  }
}