@import url('https://fonts.googleapis.com/css2?family=Iceberg&family=Press+Start+2P&display=swap');

* { box-sizing: border-box; margin: 0; padding: 0; border: 0; font: inherit; vertical-align: baseline; }
html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  background-color: #15182E; 
  overflow: hidden;
  position: fixed;
  inset: 0;
}

body, #game-canvas-wrap, canvas.pixelated-canvas {
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  will-change: transform;
  backface-visibility: hidden;
}

/* Fill the screen and keep the canvas perfectly centered */
#game-canvas-wrap{
  position: fixed;
  inset: 0;
  overflow: hidden;         
  background: #15182E;     
}

canvas.pixelated-canvas{
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%,-50%);
  width:  min(100svw, calc(100svh * (16/9)));
  height: min(100svh, calc(100svw / (16/9)));
  display: block;
  image-rendering: pixelated;
}

/* Splash */
#splash-screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: white;
  font-family: sans-serif;
  z-index: 1500;
  text-align: center;
  padding: 2rem;
}
#splash-screen .logo-container { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; flex-wrap: wrap; justify-content: center; }
#splash-screen .logo { width: clamp(56px, 10vw, 96px); height: clamp(70px, 12vw, 120px); }
#splash-screen h1 { font-family: 'Iceberg', cursive; font-size: clamp(44px, 8vw, 100px); line-height: 1; }

#start-button, #restart-button, #play-again-button {
  margin-top: 20px; padding: 12px 22px; font-size: clamp(16px, 2.6vw, 20px);
  cursor: pointer; border-radius: 50px; color: white; border: none;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
}
#start-button { background: linear-gradient(to left, #4CAF50, #8BC34A); }
#restart-button { background: linear-gradient(to left, #f44336, #e57373); }
#play-again-button { background: linear-gradient(to left, #4CAF50, #8BC34A); }

/* Game over / success */
#game-over-screen, #success-screen {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.9);
  flex-direction: column; justify-content: center; align-items: center; color: white;
  z-index: 1400; text-align: center; padding: 2rem;
}
#game-over-screen h1, #success-screen h1 {
  font-family: 'Press Start 2P', cursive; font-size: clamp(36px, 8vw, 100px); line-height: 1.1;
}

/* Settings / Instructions panels */
#open-settings-button {
  position: fixed; top: 16px; right: 16px; z-index: 1600;
  background-color: rgba(21, 24, 46, 0.8); color: white;
  border: 1px solid #87ddfe; border-radius: 50%;
  width: clamp(44px, 8vw, 50px); height: clamp(44px, 8vw, 50px);
  font-size: clamp(18px, 3vw, 24px); cursor: pointer; display: none;
}

.panel {
  position: fixed; inset: 0; background-color: rgba(0, 0, 0, 0.85);
  z-index: 2000; display: none; justify-content: center; align-items: center;
  font-family: sans-serif; padding: 20px;
}
.settings-content {
  background-color: #15182e; padding: clamp(20px, 4vw, 30px) clamp(20px, 5vw, 40px);
  border-radius: 12px; border: 1px solid #87ddfe; color: white; position: relative;
  width: min(92vw, 560px); box-shadow: 0 0 20px rgba(135, 221, 254, 0.3);
}
.settings-content h2 { font-family: "Iceberg", cursive; font-size: clamp(28px, 6vw, 40px); text-align: center; margin-bottom: 16px; }
.settings-content .info-section { margin-bottom: 16px; }
.settings-content h3 { font-size: clamp(16px, 3.8vw, 18px); margin-bottom: 8px; color: #87ddfe; border-bottom: 1px solid #444; padding-bottom: 5px; }
.settings-content p { line-height: 1.6; font-size: clamp(14px, 3.6vw, 16px); }
.settings-content kbd { background:#333; border-radius:4px; border:1px solid #555; padding:2px 6px; font-size: 0.9em; }

#close-settings-button {
  position: absolute; top: 10px; right: 20px; background: none; border: none;
  color: white; font-size: clamp(24px, 5vw, 30px); cursor: pointer;
}

#music-toggle-button, #sound-toggle-button, #continue-button {
  background-color: #4caf50; color: white; border: none; padding: 10px 15px; border-radius: 8px;
  cursor: pointer; font-size: clamp(14px, 3.5vw, 16px); width: 170px; margin-top: 10px; margin-left:10px;
}
#continue-button { display: block; margin: 10px auto 0; }

/* Character grid */
.character-container { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; align-items: start; }
.character-label { text-align: center; font-weight: 600; }
.character-image { width: 32px; height: 32px; image-rendering: pixelated;}
.monsters-container { width: 100%; display: grid; grid-template-columns: repeat(4, 1fr); place-items: center; gap: 10px; }
#settings-panel .character-container > div:first-child .character-image,
#instructions-panel .character-container > div:first-child .character-image {
  display: block;             
  margin-inline: auto;        
}

.key-instructions { margin-top: 18px; color: #ccc; font-family: sans-serif; font-size: clamp(14px, 3.2vw, 16px); }
.key-instructions kbd { background-color: #333; border-radius: 4px; border: 1px solid #555; padding: 4px 8px; font-size: 0.9em; box-shadow: 1px 1px 0 #555; }

.finisher-header-fullscreen { width: 100vw; height: 100vh; display: flex; }

/* Breakpoints for tighter screens */
@media (max-width: 768px) {
  .monsters-container { grid-template-columns: repeat(4, 1fr); }
  #settings-panel {
    align-items: flex-start; 
    overflow-y: auto;        
    padding-top: 20px;
    padding-bottom: 20px;
  }
  .settings-content {
    margin: 0 auto;         
    max-height: none;       
    overflow-y: visible;   
  }
}
@media (max-width: 480px) {
  .character-container { grid-template-columns: 1fr; }
  .monsters-container { grid-template-columns: repeat(6, 1fr); }
}

.game-over-screen-properties,
.success-screen-properties { display: none; }