/* style.css - 2048 Game Styling */
/* Clean, modern UI with responsive layout and smooth animations */

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  color: #776e65;
}

.container {
  max-width: 600px;
  width: 100%;
}

/* Header Section */
.header {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  flex-wrap: wrap;
  gap: 10px;
}

h1 {
  font-size: 2.5rem;
  font-weight: bold;
  color: #776e65;
  margin: 0;
}

.lang-toggle {
  display: flex;
  gap: 5px;
}

.lang-btn {
  padding: 8px 15px;
  border: 2px solid #8f7a66;
  background: white;
  color: #8f7a66;
  border-radius: 5px;
  cursor: pointer;
  font-weight: bold;
  transition: all 0.2s;
}

.lang-btn:hover {
  background: #f9f6f2;
}

.lang-btn.active {
  background: #8f7a66;
  color: white;
}

.score-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 15px;
  flex-wrap: wrap;
}

.scores {
  display: flex;
  gap: 10px;
}

.score-container {
  background: #bbada0;
  padding: 10px 20px;
  border-radius: 5px;
  text-align: center;
  min-width: 80px;
}

.score-label {
  color: #eee4da;
  font-size: 0.9rem;
  font-weight: bold;
  text-transform: uppercase;
}

.score-value {
  color: white;
  font-size: 1.5rem;
  font-weight: bold;
}

#new-game-btn {
  padding: 10px 25px;
  background: #8f7a66;
  color: white;
  border: none;
  border-radius: 5px;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.2s;
}

#new-game-btn:hover {
  background: #9f8a76;
}

.instructions {
  margin-top: 15px;
  font-size: 0.9rem;
  color: #776e65;
  text-align: center;
}

/* Game Board Container */
.game-container {
  position: relative;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 10px;
  padding: 15px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  margin-bottom: 20px;
}

/* Game Board Grid */
#game-board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: 10px;
  background: #bbada0;
  padding: 10px;
  border-radius: 8px;
  aspect-ratio: 1;
  max-width: 500px;
  margin: 0 auto;
}

/* Tile Styling */
.tile {
  background: rgba(238, 228, 218, 0.35);
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: bold;
  color: #776e65;
  transition: all 0.15s ease-in-out;
  animation: tileAppear 0.2s ease-in-out;
}

@keyframes tileAppear {
  0% {
    transform: scale(0);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Tile color scheme based on value */
.tile-2 {
  background: #eee4da;
  color: #776e65;
}

.tile-4 {
  background: #ede0c8;
  color: #776e65;
}

.tile-8 {
  background: #f2b179;
  color: #f9f6f2;
}

.tile-16 {
  background: #f59563;
  color: #f9f6f2;
}

.tile-32 {
  background: #f67c5f;
  color: #f9f6f2;
}

.tile-64 {
  background: #f65e3b;
  color: #f9f6f2;
}

.tile-128 {
  background: #edcf72;
  color: #f9f6f2;
  font-size: 1.8rem;
}

.tile-256 {
  background: #edcc61;
  color: #f9f6f2;
  font-size: 1.8rem;
}

.tile-512 {
  background: #edc850;
  color: #f9f6f2;
  font-size: 1.8rem;
}

.tile-1024 {
  background: #edc53f;
  color: #f9f6f2;
  font-size: 1.5rem;
}

.tile-2048 {
  background: #edc22e;
  color: #f9f6f2;
  font-size: 1.5rem;
  box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.5);
}

/* Game Over Overlay */
.overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(238, 228, 218, 0.95);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  z-index: 10;
}

.overlay.show {
  opacity: 1;
  pointer-events: all;
}

.overlay h2 {
  font-size: 3rem;
  margin-bottom: 20px;
  color: #776e65;
}

#game-over-overlay h2 {
  color: #8f7a66;
}

#win-overlay h2 {
  color: #f67c5f;
}

.overlay button {
  padding: 15px 40px;
  background: #8f7a66;
  color: white;
  border: none;
  border-radius: 5px;
  font-size: 1.2rem;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.2s;
}

.overlay button:hover {
  background: #9f8a76;
}

/* Ad Placeholder Section */
.ad-section {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  text-align: center;
}

#ad-slot {
  min-height: 100px;
  background: #f9f6f2;
  border: 2px dashed #bbada0;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #bbada0;
  font-size: 1rem;
  font-weight: bold;
}

/* Future ad expansion placeholders (commented out)
.ad-section-top {
  margin-bottom: 20px;
}

.ad-section-sidebar {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 160px;
}
*/

/* Responsive Design */
@media (max-width: 600px) {
  h1 {
    font-size: 2rem;
  }
  
  .tile {
    font-size: 1.5rem;
  }
  
  .tile-128,
  .tile-256,
  .tile-512 {
    font-size: 1.3rem;
  }
  
  .tile-1024,
  .tile-2048 {
    font-size: 1.1rem;
  }
  
  .overlay h2 {
    font-size: 2rem;
  }
  
  #game-board {
    gap: 8px;
    padding: 8px;
  }
}

@media (max-width: 400px) {
  h1 {
    font-size: 1.5rem;
  }
  
  .tile {
    font-size: 1.2rem;
  }
  
  .tile-128,
  .tile-256,
  .tile-512 {
    font-size: 1rem;
  }
  
  .tile-1024,
  .tile-2048 {
    font-size: 0.9rem;
  }
  
  .score-value {
    font-size: 1.2rem;
  }
  
  #game-board {
    gap: 6px;
    padding: 6px;
  }
}

/* Content Sections for AdSense */
.content-section {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 10px;
  padding: 20px;
  margin-top: 20px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.content-section h2 {
  font-size: 1.8rem;
  font-weight: bold;
  color: #776e65;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 2px solid #eee4da;
}

.content-section p, .content-section li {
  font-size: 1rem;
  line-height: 1.6;
  color: #776e65;
  margin-bottom: 10px;
}

.content-section ul {
  list-style-position: inside;
  padding-left: 10px;
}

.content-section strong {
  color: #8f7a66;
}

.privacy-policy p em {
  color: #f67c5f;
  font-style: normal;
  font-weight: bold;
}

/* Footer */
.footer {
  width: 100%;
  max-width: 600px;
  text-align: center;
  margin-top: 30px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.footer p {
  color: #776e65;
  margin: 5px 0;
  font-size: 0.9rem;
}

.footer a {
  color: #8f7a66;
  text-decoration: none;
  font-weight: bold;
}

.footer a:hover {
  text-decoration: underline;
}