@import url('https://fonts.googleapis.com/css2?family=Fredoka:wght@400;500;600;700;800&family=Lilita+One&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  background: radial-gradient(circle at center, #1b263b 0%, #0d1b2a 100%);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: 'Fredoka', 'Trebuchet MS', Arial, sans-serif;
  color: #ffffff;
  overflow-x: hidden;
  user-select: none;
  -webkit-user-select: none;
  padding: 10px;
}

#game-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  width: 100%;
  max-width: 420px;
}

#game-container {
  position: relative;
  width: 100%;
  aspect-ratio: 9 / 16;
  max-height: 85vh;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6), 0 0 20px rgba(78, 192, 202, 0.3);
  border: 4px solid #334155;
  background-color: #4ec0ca;
  display: flex;
  justify-content: center;
  align-items: center;
  touch-action: manipulation;
}

canvas#gameCanvas {
  width: 100%;
  height: 100%;
  display: block;
  image-rendering: auto;
  cursor: pointer;
}

canvas#gameCanvas.graphics-retro {
  image-rendering: pixelated;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
}

#ui-overlay {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  justify-content: space-between;
  pointer-events: none;
  z-index: 10;
}

#ui-overlay button {
  pointer-events: auto;
  background: rgba(0, 0, 0, 0.45);
  border: 2px solid rgba(255, 255, 255, 0.6);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  backdrop-filter: blur(4px);
  transition: transform 0.15s ease, background 0.2s ease, opacity 0.25s ease, visibility 0.25s ease;
  outline: none;
}

#skin-btn.hidden,
#graphics-btn.hidden,
#shop-btn.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: scale(0.7);
}

#ui-overlay button:hover {
  background: rgba(0, 0, 0, 0.7);
  transform: scale(1.1);
  border-color: #ffffff;
}

#ui-overlay button:active {
  transform: scale(0.95);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  #ui-overlay button:hover {
    transform: none;
  }
}

.instructions-panel {
  background: rgba(30, 41, 59, 0.85);
  border: 2px solid #475569;
  border-radius: 12px;
  padding: 14px 16px;
  width: 100%;
  text-align: center;
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.instructions-panel h3 {
  font-size: 14px;
  color: #facc15;
  margin-bottom: 10px;
  letter-spacing: 1px;
}

.instructions-panel ul {
  list-style: none;
  font-size: 11px;
  line-height: 1.8;
  color: #cbd5e1;
  text-align: left;
  display: inline-block;
  margin-bottom: 8px;
}

kbd {
  background: #334155;
  border: 1px solid #64748b;
  border-radius: 4px;
  padding: 2px 5px;
  font-family: inherit;
  font-size: 10px;
  color: #38bdf8;
  box-shadow: 0 2px 0 #1e293b;
}

.instructions-panel .credits {
  font-size: 9px;
  color: #94a3b8;
  margin-top: 4px;
}

@media (max-width: 480px) {
  body {
    padding: 0;
  }
  #game-wrapper {
    gap: 8px;
  }
  #game-container {
    max-height: 75vh;
    border-radius: 8px;
  }
  .instructions-panel {
    padding: 10px;
    font-size: 10px;
  }
}