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

html, body {
  height: 100%;
  overflow: hidden;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  background: #000;
  color: #fff;
}

#app {
  width: 100vw;
  height: 100vh;
  position: relative;
}

.logo {
  position: absolute;
  top: 2rem;
  left: 2rem;
  z-index: 100;
  font-size: 1.5rem;
  font-weight: 600;
  color: #fff;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  letter-spacing: 0.5px;
  user-select: none;
}

#three-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: crosshair;
}

.home-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 100;
  
  /* Frosted glass effect */
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  
  /* Typography */
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  font-size: 1rem;
  font-weight: 1000;
  color: rgb(255, 255, 255);
  letter-spacing: 1px;
  
  /* Layout */
  padding: 1rem 2rem;
  cursor: pointer;
  user-select: none;
  
  /* Transitions */
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Remove default button styles */
  border: none;
  outline: none;
}

.home-button:hover {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%) translateY(-1px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.home-button:active {
  transform: translate(-50%, -50%) translateY(0);
  background: rgba(255, 255, 255, 0.2);
}

.home-button span {
  display: block;
  position: relative;
  color: rgba(255, 255, 255, 0.15);
  filter: blur(0.3px);
  -webkit-filter: blur(0.3px);
}

@media (max-width: 768px) {
  .logo {
    top: 1rem;
    left: 1rem;
    font-size: 1.25rem;
  }
  
  .home-button {
    padding: 1.5rem 3rem;
    font-size: 1.5rem;
    letter-spacing: 3px;
    /* Keep centered positioning on mobile */
  }
}
