:root {
  --primary-color: #007bff;
  --bg-color: #ffffff;
  --text-color: #1a1a1a;
  --border-color: #dee2e6;
  --shadow-color: rgba(0, 0, 0, 0.1);
  --overlay-bg: rgba(0, 0, 0, 0.8);
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

[data-theme="dark"] {
  --bg-color: #1a1a1a;
  --text-color: #ffffff;
  --border-color: #404040;
  --shadow-color: rgba(0, 0, 0, 0.3);
  --overlay-bg: rgba(0, 0, 0, 0.9);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #1a1a1a;
    --text-color: #ffffff;
    --border-color: #404040;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --overlay-bg: rgba(0, 0, 0, 0.9);
  }
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, 
    "Helvetica Neue", Arial, sans-serif;
  background: #000000;
  color: var(--text-color);
  overflow: hidden;
  cursor: none;
}

.test-container {
  position: relative;
  width: 100vw;
  height: 100vh;
  background: #000000;
  transition: background-color 0.3s ease;
}

.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--overlay-bg);
  backdrop-filter: blur(10px);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  opacity: 0;
  transform: translateY(-100%);
  transition: var(--transition);
}

.nav-bar.visible {
  opacity: 1;
  transform: translateY(0);
}

.nav-link {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--primary-color);
}

.nav-title {
  color: white;
  font-weight: 600;
  font-size: 1.1rem;
}

.nav-controls {
  display: flex;
  gap: 0.5rem;
}

.nav-button {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius);
  padding: 0.5rem;
  color: white;
  cursor: pointer;
  transition: var(--transition);
}

.nav-button:hover {
  background: rgba(255, 255, 255, 0.2);
}

.nav-button svg {
  width: 20px;
  height: 20px;
}

.instructions {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--overlay-bg);
  color: white;
  padding: 1rem 2rem;
  border-radius: var(--border-radius);
  backdrop-filter: blur(10px);
  z-index: 1000;
  opacity: 1;
  transition: var(--transition);
}

.instructions.hidden {
  opacity: 0;
  pointer-events: none;
}

.overlay-menu {
  position: fixed;
  top: 50%;
  right: 2rem;
  transform: translateY(-50%);
  background: var(--overlay-bg);
  backdrop-filter: blur(10px);
  color: white;
  padding: 1.5rem;
  border-radius: var(--border-radius);
  width: 300px;
  max-height: 80vh;
  overflow-y: auto;
  z-index: 1000;
  opacity: 0;
  transform: translateY(-50%) translateX(100%);
  transition: var(--transition);
}

.overlay-menu.visible {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

.menu-section {
  margin-bottom: 1.5rem;
}

.menu-section:last-child {
  margin-bottom: 0;
}

.menu-section h3 {
  font-size: 1rem;
  margin-bottom: 0.75rem;
  color: var(--primary-color);
}

.control-group {
  margin-bottom: 0.75rem;
}

.control-group label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
  color: #ccc;
}

.control-group input[type="color"],
.control-group input[type="text"],
.control-group input[type="range"] {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius);
  background: rgba(255, 255, 255, 0.1);
  color: white;
  font-size: 0.9rem;
}

.control-group input[type="color"] {
  height: 40px;
  cursor: pointer;
}

.control-group input[type="range"] {
  padding: 0;
  height: 6px;
  background: rgba(255, 255, 255, 0.2);
  outline: none;
  border-radius: 3px;
}

.control-group input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 16px;
  height: 16px;
  background: var(--primary-color);
  border-radius: 50%;
  cursor: pointer;
}

.control-group input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--primary-color);
  border-radius: 50%;
  cursor: pointer;
  border: none;
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.toggle-label input[type="checkbox"] {
  display: none;
}

.toggle-slider {
  width: 40px;
  height: 20px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 10px;
  position: relative;
  transition: var(--transition);
}

.toggle-slider::before {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background: white;
  border-radius: 50%;
  transition: var(--transition);
}

.toggle-label input[type="checkbox"]:checked + .toggle-slider {
  background: var(--primary-color);
}

.toggle-label input[type="checkbox"]:checked + .toggle-slider::before {
  transform: translateX(20px);
}

.menu-button {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition);
  width: 100%;
  margin-bottom: 0.5rem;
}

.menu-button:hover {
  background: #0056b3;
}

.menu-button:last-child {
  margin-bottom: 0;
}

.color-queue {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.color-swatch {
  width: 32px;
  height: 32px;
  border-radius: var(--border-radius);
  border: 2px solid rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: var(--transition);
}

.color-swatch:hover {
  border-color: var(--primary-color);
  transform: scale(1.1);
}

.color-swatch.active {
  border-color: var(--primary-color);
  border-width: 3px;
}

.grid-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}

.grid-overlay.visible {
  opacity: 1;
}

#speedValue {
  margin-left: 0.5rem;
  font-size: 0.9rem;
  color: #ccc;
}

@media (max-width: 768px) {
  .nav-bar {
    padding: 0.75rem 1rem;
  }
  
  .nav-title {
    font-size: 1rem;
  }
  
  .overlay-menu {
    right: 1rem;
    left: 1rem;
    width: auto;
    max-width: none;
  }
  
  .instructions {
    left: 1rem;
    right: 1rem;
    transform: none;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .nav-bar {
    padding: 0.5rem 1rem;
  }
  
  .nav-button {
    padding: 0.4rem;
  }
  
  .nav-button svg {
    width: 16px;
    height: 16px;
  }
  
  .overlay-menu {
    padding: 1rem;
  }
  
  .instructions {
    bottom: 1rem;
    font-size: 0.9rem;
  }
}