/* Cyberpunk / Synthwave Tetris Stylesheet */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;600;800;900&family=Rajdhani:wght@500;600;700&display=swap');

:root {
  /* Color System */
  --bg-dark: #070714;
  --panel-bg: rgba(13, 14, 33, 0.75);
  --panel-border: rgba(0, 243, 255, 0.25);
  --panel-glow: rgba(0, 243, 255, 0.15);
  
  --neon-cyan: #00f3ff;
  --neon-magenta: #ff0077;
  --neon-yellow: #ffea00;
  --neon-purple: #b026ff;
  --neon-green: #00ff66;
  --neon-blue: #0066ff;
  --neon-orange: #ff8800;
  --neon-red: #ff0044;

  --text-main: #ffffff;
  --text-muted: #8a99ad;

  --font-header: 'Orbitron', sans-serif;
  --font-body: 'Rajdhani', sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-select: none;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-body);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow-x: hidden;
  position: relative;
}

/* Synthwave Animated Grid Background */
.background-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  overflow: hidden;
  background: radial-gradient(circle at 50% 30%, #1a0b36 0%, #070714 80%);
}

.synth-sun {
  position: absolute;
  top: 12%;
  left: 50%;
  transform: translateX(-50%);
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: linear-gradient(to bottom, #ffea00, #ff0077);
  box-shadow: 0 0 60px #ff0077, 0 0 100px #ffea00;
  opacity: 0.85;
}

.synth-sun::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 6px,
    #070714 6px,
    #070714 10px
  );
  mask-image: linear-gradient(to bottom, transparent 40%, black 100%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 40%, black 100%);
}

.perspective-grid {
  position: absolute;
  bottom: 0;
  left: -50%;
  width: 200%;
  height: 55vh;
  background-image: 
    linear-gradient(to right, rgba(0, 243, 255, 0.25) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 0, 119, 0.25) 1px, transparent 1px);
  background-size: 50px 30px;
  transform: perspective(300px) rotateX(65deg);
  animation: grid-move 8s linear infinite;
  mask-image: linear-gradient(to top, rgba(0,0,0,1) 10%, rgba(0,0,0,0) 90%);
  -webkit-mask-image: linear-gradient(to top, rgba(0,0,0,1) 10%, rgba(0,0,0,0) 90%);
}

@keyframes grid-move {
  0% { background-position: 0 0; }
  100% { background-position: 0 300px; }
}

/* App Header */
.header {
  text-align: center;
  margin-bottom: 12px;
}

.title {
  font-family: var(--font-header);
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: 4px;
  background: linear-gradient(45deg, var(--neon-cyan), var(--neon-magenta), var(--neon-yellow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 20px rgba(0, 243, 255, 0.4);
  text-transform: uppercase;
  position: relative;
  display: inline-block;
}

.subtitle {
  font-size: 1rem;
  color: var(--neon-cyan);
  letter-spacing: 3px;
  text-transform: uppercase;
  opacity: 0.85;
  margin-top: -4px;
}

/* Main Layout Container */
.game-container {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  justify-content: center;
  gap: 20px;
  padding: 15px;
  max-width: 1000px;
  width: 100%;
}

/* Glassmorphism Cards */
.panel {
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5), inset 0 0 15px var(--panel-glow);
  border-radius: 12px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.panel-title {
  font-family: var(--font-header);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--neon-cyan);
  text-transform: uppercase;
  margin-bottom: 10px;
  text-shadow: 0 0 8px var(--neon-cyan);
}

/* Side Columns */
.side-column {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 170px;
}

/* Center Canvas Wrapper */
.main-canvas-wrapper {
  position: relative;
  padding: 8px;
  border-radius: 14px;
  background: rgba(5, 6, 18, 0.85);
  border: 2px solid var(--neon-cyan);
  box-shadow: 0 0 25px rgba(0, 243, 255, 0.3), inset 0 0 20px rgba(0, 243, 255, 0.1);
}

canvas#tetris-canvas {
  display: block;
  border-radius: 8px;
  background: rgba(3, 4, 12, 0.95);
}

/* Mini Canvases */
canvas.mini-canvas {
  background: rgba(5, 6, 18, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  margin-bottom: 6px;
}

.next-queue-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

/* Stat Items */
.stat-box {
  width: 100%;
  text-align: center;
  margin-bottom: 12px;
}

.stat-box:last-child {
  margin-bottom: 0;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 2px;
}

.stat-value {
  font-family: var(--font-header);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-main);
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.stat-value.highlight {
  color: var(--neon-yellow);
  text-shadow: 0 0 12px var(--neon-yellow);
}

/* Buttons and Controls UI */
.btn {
  font-family: var(--font-header);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 10px 18px;
  border-radius: 8px;
  border: 1px solid var(--neon-cyan);
  background: rgba(0, 243, 255, 0.1);
  color: var(--neon-cyan);
  cursor: pointer;
  transition: all 0.2s ease;
  text-transform: uppercase;
  outline: none;
  box-shadow: 0 0 10px rgba(0, 243, 255, 0.2);
  width: 100%;
  margin-top: 6px;
}

.btn:hover {
  background: var(--neon-cyan);
  color: var(--bg-dark);
  box-shadow: 0 0 20px var(--neon-cyan);
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn-secondary {
  border-color: var(--neon-magenta);
  color: var(--neon-magenta);
  background: rgba(255, 0, 119, 0.1);
  box-shadow: 0 0 10px rgba(255, 0, 119, 0.2);
}

.btn-secondary:hover {
  background: var(--neon-magenta);
  color: #fff;
  box-shadow: 0 0 20px var(--neon-magenta);
}

.top-bar-controls {
  position: absolute;
  top: 15px;
  right: 20px;
  display: flex;
  gap: 10px;
}

.btn-icon {
  width: 42px;
  height: 42px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  border-radius: 50%;
}

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(5, 6, 18, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

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

.modal-card {
  background: var(--panel-bg);
  border: 2px solid var(--neon-cyan);
  box-shadow: 0 0 40px rgba(0, 243, 255, 0.4);
  border-radius: 16px;
  padding: 30px;
  max-width: 420px;
  width: 90%;
  text-align: center;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.modal-overlay.active .modal-card {
  transform: scale(1);
}

.modal-title {
  font-family: var(--font-header);
  font-size: 2rem;
  font-weight: 900;
  color: var(--neon-cyan);
  text-shadow: 0 0 15px var(--neon-cyan);
  margin-bottom: 15px;
}

.modal-title.game-over {
  color: var(--neon-red);
  text-shadow: 0 0 15px var(--neon-red);
}

.modal-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

/* Controls Guide Table */
.controls-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 16px;
  text-align: left;
  margin: 15px 0;
  font-size: 0.95rem;
}

.key-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 4px;
  padding: 2px 8px;
  font-family: monospace;
  font-weight: bold;
  color: var(--neon-cyan);
}

/* Touch Controls Panel (Mobile) */
.touch-controls {
  display: none;
  width: 100%;
  max-width: 500px;
  margin-top: 15px;
  padding: 10px;
  gap: 15px;
  justify-content: space-between;
  align-items: center;
}

.touch-dpad, .touch-actions {
  display: grid;
  gap: 8px;
}

.touch-dpad {
  grid-template-columns: repeat(3, 54px);
  grid-template-rows: repeat(2, 54px);
}

.touch-actions {
  grid-template-columns: repeat(2, 60px);
  grid-template-rows: repeat(2, 54px);
}

.touch-btn {
  background: rgba(0, 243, 255, 0.12);
  border: 1px solid var(--neon-cyan);
  border-radius: 10px;
  color: var(--neon-cyan);
  font-family: var(--font-header);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 10px rgba(0, 243, 255, 0.2);
  touch-action: manipulation;
}

.touch-btn:active {
  background: var(--neon-cyan);
  color: var(--bg-dark);
}

.touch-btn-wide {
  grid-column: span 2;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .game-container {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }
  
  .side-column {
    width: 100%;
    max-width: 320px;
    flex-direction: row;
    justify-content: space-between;
  }

  .panel {
    flex: 1;
    padding: 10px;
  }

  .title {
    font-size: 1.8rem;
  }

  .touch-controls {
    display: flex;
  }
}