:root {
  --color-primary: #00bcd4;
  --color-primary-dark: #006064;
  --color-primary-light: rgba(0, 188, 212, 0.5);
  --color-accent: #ffe138;
  --color-accent-glow: rgba(255, 225, 56, 0.5);
  --color-background: #121212;
  --color-surface: #1e1e1e;
  --color-surface-dark: #262626;
  --color-black: #000;
  --color-white: #fff;
  --color-gray-100: #e0e0e0;
  --color-gray-200: #bdbdbd;
  --color-gray-300: #888;
  --color-gray-400: #666;
  --color-gray-500: #555;
  --color-gray-600: #444;
  --color-gray-700: #333;
  --color-gray-800: #2c2c2c;
  --color-gray-900: #1a1a1a;
  --color-gold: gold;

  /* Game specific colors */
  --color-grid-line: #333;
  --color-clear-flash-1: #ffffff;
  --color-clear-flash-2: #00ffff;
  --color-level-flash: #ffff00;
  --color-overlay: rgba(255, 255, 255, 0.3);
}

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

body {
  font-family: "Pixelify Sans", system-ui, sans-serif;
  background-color: var(--color-background);
  color: var(--color-white);
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.container {
  display: flex;
  gap: 8px;
  background-color: var(--color-surface);
  padding: 8px;
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
  z-index: 1;
}

.game-info {
  width: 64px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

h1 {
  font-size: 2.8rem;
  text-align: center;
  color: var(--color-primary);
  margin-bottom: 20px;
  letter-spacing: 3px;
  text-shadow: 0 0 10px var(--color-primary-light);
  font-weight: 700;
  -webkit-text-stroke: 1px var(--color-primary-dark);
}

h2 {
  font-size: 1.3rem;
  color: var(--color-gray-100);
  letter-spacing: 1px;
}

/* New vertical pieces queue */
.pieces-preview-container {
  background-color: var(--color-surface-dark);
  padding: 4px;
  border-radius: 5px;
  border: 1px solid var(--color-gray-700);
}

.pieces-preview-container h2 {
  font-size: 1rem;
}

.pieces-queue {
  display: flex;
  flex-direction: column;
  background-color: var(--color-black);
  border-radius: 5px;
  overflow: hidden;
}

.queue-piece-container {
  width: 100%;
  height: 40px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.queue-piece-canvas {
  background-color: transparent;
}

.level-progress h2,
.score-container h2 {
  font-size: 0.8rem;
}

.score-container h2 {
  display: flex;
  align-items: center;
}

.level-progress,
.score-container {
  background-color: var(--color-surface-dark);
  padding: 4px;
  border-radius: 5px;
  border: 1px solid var(--color-gray-700);
  text-align: center;
}

.progress-blocks {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  margin-top: 4px;
  padding: 2px;
}

.progress-block {
  width: 24px;
  height: 10px;
  background-color: var(--color-gray-800);
  border: 1px solid var(--color-gray-600);
  border-radius: 2px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.progress-block:hover {
  transform: translateX(2px);
  box-shadow: 0 0 3px var(--color-primary-light);
}

.progress-block::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.1), transparent);
}

.progress-block.active {
  background-color: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent-glow);
  border-color: var(--color-accent);
  transform: scale(1.05);
}

.progress-block.active::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    45deg,
    transparent 40%,
    rgba(255, 255, 255, 0.3) 50%,
    transparent 60%
  );
  background-size: 200% 200%;
  animation: shine 1.5s infinite linear;
}

@keyframes shine {
  0% {
    background-position: 0% 0%;
  }
  100% {
    background-position: 200% 0%;
  }
}

#score,
#level {
  color: var(--color-accent);
  text-shadow: 0 0 4px var(--color-accent-glow);
  font-weight: 600;
  margin-left: 4px;
}

.blocky-container {
  background-color: var(--color-surface-dark);
  padding: 4px;
  border-radius: 5px;
  border: 1px solid var(--color-gray-700);
  height: fit-content;
}

#blocky-canvas {
  background-color: var(--color-black);
  display: block;
}

/* Enhanced Splash Screen Styles */
#splash-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
  background-image: radial-gradient(
    circle,
    var(--color-gray-900) 10%,
    var(--color-black) 90%
  );
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10;
}

.splash-content {
  background-color: var(--color-surface);
  padding: 32px;
  border-radius: 15px;
  text-align: center;
  box-shadow: 0 0 40px var(--color-primary-light);
  border: 3px solid var(--color-primary);
  width: 90%;
  max-width: 600px;
  transition: all 0.3s ease;
  max-height: 90vh;
  overflow-y: auto;
}

.splash-content h1 {
  font-size: 3.4rem;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 8px;
  text-shadow: 0 0 15px var(--color-primary-light);
  font-weight: 700;
  -webkit-text-stroke: 2px var(--color-primary-dark);
  color: var(--color-primary);
}

.splash-content p {
  margin: 20px 0 40px;
  font-size: 1.5rem;
  color: var(--color-gray-200);
}

/* Menu Buttons */
.menu-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  margin-top: 20px;
}

.menu-button {
  background-color: var(--color-primary);
  color: var(--color-background);
  border: none;
  padding: 15px 0;
  font-size: 1.5rem;
  font-weight: bold;
  font-family: "Pixelify Sans", system-ui, sans-serif;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  width: 220px;
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.menu-button:before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: all 0.6s;
}

.menu-button:hover:before {
  left: 100%;
}

.menu-button:hover {
  background-color: #00acc1;
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* Sound button specific styling */
.sound-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.sound-icon {
  font-size: 1.2rem;
}

.sound-button.muted {
  background-color: var(--color-gray-600);
  color: var(--color-gray-300);
}

.sound-button.muted:hover {
  background-color: var(--color-gray-500);
}

/* Controls Screen */
#controls-screen {
  padding-bottom: 40px; /* Extra padding at bottom for scrolling */
}

.controls-info {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  margin-bottom: 24px;
}

.controls-section-title {
  font-size: 1.5rem;
  color: var(--color-primary);
  margin: 10px 0 15px;
  text-shadow: 0 0 5px var(--color-primary-light);
}

.control-item {
  background-color: var(--color-surface-dark);
  border-radius: 8px;
  width: 160px;
  padding: 15px 10px;
}

.key-visual {
  background-color: var(--color-gray-700);
  color: var(--color-white);
  font-size: 1.2rem;
  padding: 8px;
  border-radius: 6px;
  width: 75%;
  margin: 0 auto 10px;
  box-shadow: 0 3px 0 var(--color-gray-900);
  letter-spacing: 1px;
}

/* Mobile touch controls visualization */
.touch-visual {
  background-color: var(--color-gray-800);
  width: 75%;
  height: 80px;
  margin: 0 auto 10px;
  border-radius: 6px;
  position: relative;
  border: 1px solid var(--color-gray-600);
  overflow: hidden;
}

.touch-visual::before {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  background-color: var(--color-primary);
  border-radius: 50%;
  opacity: 0.8;
  box-shadow: 0 0 10px var(--color-primary);
}

.swipe-horizontal::before {
  top: 50%;
  left: 20%;
  transform: translateY(-50%);
  animation: swipeHorizontal 2s infinite;
}

.swipe-down::before {
  top: 25%;
  left: 50%;
  transform: translateX(-50%);
  animation: swipeDown 2s infinite;
}

.swipe-up::before {
  top: 75%;
  left: 50%;
  transform: translateX(-50%);
  animation: swipeUp 2s infinite;
}

.tap::before {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: tap 2s infinite;
}

@keyframes swipeHorizontal {
  0% {
    left: 20%;
  }
  50% {
    left: 70%;
  }
  100% {
    left: 20%;
  }
}

@keyframes swipeDown {
  0% {
    top: 25%;
  }
  50% {
    top: 65%;
  }
  100% {
    top: 25%;
  }
}

@keyframes swipeUp {
  0% {
    top: 75%;
  }
  50% {
    top: 25%;
  }
  100% {
    top: 75%;
  }
}

@keyframes tap {
  0%,
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.8;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.5);
    opacity: 0.5;
  }
}

.control-item p {
  color: var(--color-gray-100);
  font-size: 0.9rem;
  text-align: center;
}

/* Consolidated back button styles */
.menu-button.back-button,
#back-button,
#back-from-scores-button {
  margin-top: 20px;
  background-color: var(--color-gray-500);
}

.menu-button.back-button:hover,
#back-button:hover,
#back-from-scores-button:hover {
  background-color: var(--color-gray-400);
}

.game-area {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.high-scores-list {
  max-height: 400px;
  overflow-y: auto;
  margin-bottom: 20px;
  padding: 10px;
}

.high-scores-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 auto;
  color: var(--color-gray-100);
}

.high-scores-table th {
  background-color: var(--color-gray-800);
  padding: 10px;
  text-align: center;
  font-weight: bold;
  color: var(--color-primary);
}

.high-scores-table td {
  padding: 10px;
  text-align: center;
  border-bottom: 1px solid var(--color-gray-700);
}

.high-scores-table tr:nth-child(even) {
  background-color: var(--color-gray-900);
}

.high-scores-table tr:nth-child(2) td {
  /* Highlight the top score */
  color: var(--color-gold);
  font-weight: bold;
}

.no-scores {
  text-align: center;
  padding: 20px;
  color: var(--color-gray-300);
  font-style: italic;
}

.author-credit {
  font-size: 12px;
  text-align: center;
  margin-top: 20px;
  color: var(--color-gray-400);
}

.author-credit a {
  text-decoration: none;
  transition: color 0.2s ease;
}

.author-credit a:hover {
  text-decoration: underline;
}

/* Responsive styles for controls screen */
@media (max-width: 768px) {
  .splash-content {
    padding: 20px;
    width: 95%;
    max-height: 85vh;
  }

  .controls-info {
    gap: 10px;
    padding-bottom: 10px;
  }

  .control-item {
    width: 140px;
    padding: 12px 8px;
  }

  .controls-section-title {
    font-size: 1.3rem;
    margin: 8px 0 12px;
  }

  #controls-screen .controls-section-title:nth-of-type(2) {
    margin-top: 20px;
  }
}

@media (max-width: 480px) {
  .splash-content {
    padding: 15px;
    max-height: 80vh;
  }

  .control-item {
    width: 120px;
    padding: 10px 5px;
    margin-bottom: 5px;
  }

  .key-visual,
  .touch-visual {
    width: 85%;
  }

  .touch-visual {
    height: 70px;
  }

  .control-item p {
    font-size: 0.8rem;
  }

  h1 {
    font-size: 2.4rem;
    margin-bottom: 15px;
  }

  .controls-info {
    margin-bottom: 15px;
  }
}

/* Custom scrollbar styling */
.splash-content::-webkit-scrollbar {
  width: 10px;
}

.splash-content::-webkit-scrollbar-track {
  background: var(--color-gray-800);
  border-radius: 5px;
}

.splash-content::-webkit-scrollbar-thumb {
  background: var(--color-primary-dark);
  border-radius: 5px;
  border: 2px solid var(--color-gray-800);
}

.splash-content::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* Firefox scrollbar */
.splash-content {
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary-dark) var(--color-gray-800);
}