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

body {
  background: #0a0a1a;
  overflow: hidden;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  user-select: none;
  -webkit-user-select: none;
}

#game-container {
  position: relative;
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

#gameCanvas {
  display: block;
  background: #1a1a2e;
  image-rendering: auto;
  width: 100vw;
  height: 100vh;
}


#ui-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.ui-btn {
  position: absolute;
  top: 10px;
  width: 40px;
  height: 40px;
  background: rgba(0,0,0,0.5);
  color: white;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 8px;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: all;
  transition: background 0.2s;
}

.ui-btn:hover {
  background: rgba(255,255,255,0.2);
}

#pause-button { left: 10px; }
#fullscreen-button { right: 10px; }

.menu-panel {
  background: linear-gradient(135deg, rgba(20,20,50,0.95), rgba(10,10,30,0.95));
  border: 2px solid rgba(255,215,0,0.3);
  border-radius: 16px;
  padding: 40px;
  text-align: center;
  min-width: 320px;
  box-shadow: 0 0 60px rgba(0,0,0,0.8), inset 0 0 30px rgba(255,215,0,0.05);
}

.menu-panel h2 {
  color: #ffd700;
  font-size: 2em;
  margin-bottom: 30px;
  letter-spacing: 4px;
}

.menu-btn {
  display: block;
  width: 100%;
  padding: 14px 24px;
  margin: 10px 0;
  background: linear-gradient(135deg, #2a2a5a, #1a1a3a);
  color: white;
  border: 1px solid rgba(255,215,0,0.2);
  border-radius: 8px;
  font-size: 1.1em;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 2px;
}

.menu-btn:hover {
  background: linear-gradient(135deg, #3a3a7a, #2a2a5a);
  border-color: #ffd700;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(255,215,0,0.2);
}

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

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 15px 0;
  color: white;
}

.setting-row label {
  font-size: 1em;
  letter-spacing: 1px;
}

.setting-row input[type="range"] {
  width: 150px;
  accent-color: #ffd700;
}

#pause-menu, #settings-panel {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.7);
  z-index: 50;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@media (max-width: 768px) {
  .game-title { font-size: 2.5em; }
  .menu-panel { min-width: 260px; padding: 30px; }
  .menu-panel h2 { font-size: 1.5em; }
  .menu-btn { padding: 12px 20px; font-size: 1em; }
}

#start-video {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
  cursor: pointer;
  transition: opacity 0.5s;
}

#start-video.hidden {
  opacity: 0;
  pointer-events: none;
}

#start-video video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.skip-text {
  position: absolute;
  bottom: 60px;
  left: 50%;
  transform: translateX(-50%);
  color: #ffffff;
  font-size: 1.4em;
  font-weight: bold;
  letter-spacing: 3px;
  background: rgba(0,0,0,0.55);
  padding: 10px 28px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.2);
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}