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

body {
  margin: 0;
  padding: 0;
 background-color: #000;
  font-family: 'Orbitron', sans-serif;
}

html, body {
  height: 100%;
  overflow: hidden;
}

/* === MAIN MENU & OPTIONS MENU === */
#mainMenu, #optionsMenu {
  position: absolute;
  width: 100vw;
  height: 100vh;
  top: 0;
  left: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 10;
  animation: fadeIn 1s ease-out;
}

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

/* === STARS CONTAINER (hidden by default, no animation) === */
.stars-container {
  display: none;
}

/* === MENU CONTENT === */
.menu-content {
  text-align: center;
  z-index: 11;
}

/* === GAME TITLE === */
.game-title {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 60px;
}

.title-word {
  font-size: 90px;
  color: #ffffff;
  letter-spacing: 4px;
  font-weight: 900;
  text-shadow:
    2px 2px 0px #00bcd4,
    4px 4px 0px #009bb0,
    6px 6px 0px #007a8c,
    8px 8px 0px #005a68,
    10px 10px 12px rgba(0, 234, 255, 0.7),
    0 0 25px #00eaff;
  animation: pixelGlow 2s infinite alternate ease-in-out;
}

@keyframes pixelGlow {
  from {
    text-shadow:
      2px 2px 0px #00eaff,
      4px 4px 0px #00bcd4,
      6px 6px 0px #009bb0,
      8px 8px 0px #007a8c,
      10px 10px 14px rgba(0, 234, 255, 0.9),
      0 0 35px #00eaff;
  }
  to {
    text-shadow:
      2px 2px 0px #00eaff,
      3px 3px 0px #00bcd4,
      5px 5px 0px #009bb0,
      7px 7px 0px #007a8c,
      9px 9px 12px rgba(0, 234, 255, 0.7),
      0 0 20px #00eaff;
  }
}

/* === MENU BUTTONS CONTAINER === */
.menu-buttons {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-bottom: 40px;
}

/* === MENU BUTTON === */
.menu-btn {
  font-size: 28px;
  padding: 15px 55px;
  margin: 0;
  cursor: pointer;
  background: linear-gradient(145deg, #111, #1b1b1b);
  color: white;
  border: 2px solid #00eaff;
  border-radius: 40px;
  box-shadow:
    0 4px 0 #00bcd4,
    0 0 12px rgba(0, 234, 255, 0.4),
    inset 0 0 15px rgba(0, 234, 255, 0.2);
  transition: 0.3s ease-in-out;
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-width: 320px;
}

.menu-btn:hover {
  background: #00eaff;
  color: #000;
  transform: translateY(-5px) scale(1.08);
  box-shadow:
    0 10px 20px rgba(0, 234, 255, 0.6),
    0 0 30px #00eaff;
}

.menu-btn:active {
  transform: translateY(-2px) scale(1.05);
}

/* === BUTTON ICON & TEXT === */
.btn-icon {
  font-size: 24px;
  font-weight: bold;
}

.btn-text {
  font-size: 22px;
}

/* === FOOTER INFO === */
.footer-info {
  margin-top: 50px;
  padding: 20px 30px;
  background: rgba(0, 0, 0, 0.4);
  border: 2px solid rgba(0, 234, 255, 0.3);
  border-radius: 15px;
  backdrop-filter: blur(4px);
}

.footer-info p {
  color: #00eaff;
  font-size: 14px;
  letter-spacing: 1px;
  opacity: 0.9;
  text-align: center;
}

/* === OPTIONS TITLE === */
.options-title {
  font-size: 70px;
  font-weight: 900;
  color: #ffffff;
  margin-bottom: 50px;
  letter-spacing: 4px;
  text-shadow:
    2px 2px 0px #00bcd4,
    4px 4px 0px #009bb0,
    6px 6px 0px #007a8c,
    8px 8px 0px #005a68,
    10px 10px 12px rgba(0, 234, 255, 0.7),
    0 0 25px #00eaff;
}

/* === OPTIONS CONTAINER === */
.options-container {
  background: rgba(0, 0, 0, 0.5);
  border: 2px solid rgba(0, 234, 255, 0.4);
  border-radius: 20px;
  padding: 40px 50px;
  margin-bottom: 40px;
  min-width: 600px;
  backdrop-filter: blur(5px);
  box-shadow: 
    0 0 20px rgba(0, 234, 255, 0.3),
    inset 0 0 20px rgba(0, 234, 255, 0.1);
}

/* === OPTION ITEM === */
.option-item {
  margin-bottom: 35px;
  text-align: left;
}

.option-item:last-child {
  margin-bottom: 0;
}

.option-item label {
  display: block;
  color: #00eaff;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 15px;
  letter-spacing: 2px;
  text-transform: uppercase;
  text-shadow: 0 0 10px rgba(0, 234, 255, 0.5);
}

/* === SLIDER CONTAINER === */
.slider-container {
  display: flex;
  align-items: center;
  gap: 20px;
}

/* === RANGE SLIDER === */
input[type="range"] {
  flex: 1;
  height: 6px;
  background: rgba(27, 27, 27, 0.8);
  border: 2px solid #00eaff;
  border-radius: 10px;
  outline: none;
  -webkit-appearance: none;
  cursor: pointer;
  box-shadow: inset 0 0 5px rgba(0, 234, 255, 0.3);
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  background: linear-gradient(145deg, #00eaff, #00bcd4);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 
    0 0 10px rgba(0, 234, 255, 0.8),
    0 2px 4px rgba(0, 0, 0, 0.5);
  transition: all 0.2s ease;
  border: 2px solid #ffffff;
}

input[type="range"]::-webkit-slider-thumb:hover {
  background: #00eaff;
  box-shadow: 
    0 0 20px rgba(0, 234, 255, 1),
    0 4px 8px rgba(0, 0, 0, 0.6);
  transform: scale(1.15);
}

input[type="range"]::-moz-range-thumb {
  width: 24px;
  height: 24px;
  background: linear-gradient(145deg, #00eaff, #00bcd4);
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid #ffffff;
  box-shadow: 
    0 0 10px rgba(0, 234, 255, 0.8),
    0 2px 4px rgba(0, 0, 0, 0.5);
}

/* === SLIDER VALUE TEXT === */
.slider-container span {
  color: #ffffff;
  font-size: 18px;
  font-weight: 700;
  min-width: 60px;
  text-align: right;
  text-shadow: 0 0 8px rgba(0, 234, 255, 0.6);
}

/* === BUTTON GROUP === */
.button-group {
  display: flex;
  gap: 12px;
}

/* === TOGGLE BUTTON === */
.toggle-btn {
  flex: 1;
  padding: 12px 25px;
  font-family: 'Orbitron', sans-serif;
  font-size: 16px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.6);
  background: linear-gradient(145deg, #111, #1b1b1b);
  border: 2px solid rgba(0, 234, 255, 0.4);
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: 
    0 2px 0 rgba(0, 188, 212, 0.3),
    inset 0 0 10px rgba(0, 234, 255, 0.1);
}

.toggle-btn:hover {
  color: #00eaff;
  border-color: #00eaff;
  background: linear-gradient(145deg, #1b1b1b, #2a2a2a);
  box-shadow: 
    0 2px 0 #00bcd4,
    0 0 15px rgba(0, 234, 255, 0.4),
    inset 0 0 15px rgba(0, 234, 255, 0.2);
}

.toggle-btn.active {
  color: #000;
  background: #00eaff;
  border-color: #00eaff;
  box-shadow: 
    0 4px 0 #00bcd4,
    0 0 20px rgba(0, 234, 255, 0.8),
    inset 0 0 10px rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

/* === BACK BUTTON === */
.back-btn {
  margin-top: 20px;
  background: linear-gradient(145deg, #1b1b1b, #111);
  border-color: #00eaff;
  color: #00eaff;
  box-shadow: 
    0 4px 0 #00bcd4,
    0 0 12px rgba(0, 234, 255, 0.4),
    inset 0 0 15px rgba(0, 234, 255, 0.2);
}

.back-btn:hover {
  background: linear-gradient(145deg, #2a2a2a, #1b1b1b);
  border-color: #00eaff;
  color: #ffffff;
  box-shadow: 
    0 6px 0 #00bcd4,
    0 0 25px rgba(0, 234, 255, 0.6),
    inset 0 0 20px rgba(0, 234, 255, 0.3);
}

/* === GAME CONTAINER === */
#gameContainer {
  width: 100vw;
  height: 100vh;
  background: #000;
}

#canvas {
  width: 100%;
  height: 100%;
  margin: 0;
  background-color: black;
  display: block;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .title-word {
    font-size: 60px;
  }
  
  .menu-btn {
    font-size: 20px;
    padding: 12px 40px;
    min-width: 280px;
  }
  
  .options-container {
    min-width: 90vw;
    padding: 30px;
  }
  
  .options-title {
    font-size: 50px;
  }
  
  .footer-info p {
    font-size: 12px;
  }
}