:root {
  /* Black cyber theme colors */
  --color-cosmic-dark: #000000;
  --color-cosmic-deep: #0a0a0a;
  --color-cosmic-medium: #1a1a1a;
  --color-cyber-green: #00ff41;
  --color-cyber-blue: #00d4ff;
  --color-cyber-purple: #bf00ff;
  --color-text-primary: #ffffff;
  --color-text-secondary: #b4b4c8;
  --color-text-muted: #6b6b7f;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: "Playfair Display", Georgia, serif;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;

  --transition-fast: 0.2s ease;
  --transition-medium: 0.4s ease;
  --transition-slow: 0.6s ease;
}

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

body {
  font-family: var(--font-sans);
  /* Pure black background */
  background: #000000;
  color: var(--color-text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#app {
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-cosmic-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity var(--transition-slow);
}

.loading-screen.fade-out {
  opacity: 0;
  pointer-events: none;
}

.loading-content {
  text-align: center;
}

.quantum-loader {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-md);
  border: 3px solid var(--color-cosmic-medium);
  border-top-color: var(--color-quantum-cyan);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.loading-text {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.loading-progress {
  font-size: 0.875rem;
  color: var(--color-quantum-cyan);
  font-weight: 600;
}

/* Main Interface */
.main-interface {
  flex: 1;
  display: flex;
  flex-direction: column;
  opacity: 1;
  transition: opacity var(--transition-slow);
}

.main-interface.hidden {
  display: none;
}

/* Header */
.app-header {
  position: relative;
  text-align: center;
  padding: var(--spacing-md) var(--spacing-sm);
  /* Black gradient header */
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0) 100%);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-cyber-green);
}

.app-title {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 700;
  /* Cyber gradient colors */
  background: linear-gradient(135deg, var(--color-cyber-green), var(--color-cyber-blue), var(--color-cyber-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-xs);
  letter-spacing: -0.02em;
  text-shadow: 0 0 20px rgba(0, 255, 65, 0.5);
}

.app-subtitle {
  font-size: clamp(0.875rem, 2vw, 1rem);
  color: var(--color-text-secondary);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 300;
}

.icon-btn {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  /* Cyber button style */
  background: rgba(0, 255, 65, 0.1);
  border: 1px solid var(--color-cyber-green);
  color: var(--color-cyber-green);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  background: rgba(0, 255, 65, 0.2);
  box-shadow: 0 0 20px rgba(0, 255, 65, 0.5);
  transform: scale(1.05);
}

/* Canvas Container */
.canvas-container {
  position: relative;
  flex: 1;
  min-height: 300px;
  max-height: 50vh;
  /* Pure black background */
  background: #000000;
  border-top: 1px solid var(--color-cyber-green);
  border-bottom: 1px solid var(--color-cyber-blue);
}

#visualization-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.hud-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  padding: var(--spacing-md);
}

/* Entropy Display */
.entropy-display {
  max-width: 400px;
  margin: 0 auto;
}

.entropy-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
  text-align: center;
}

.entropy-bar-container {
  position: relative;
  height: 20px;
  /* Dark background with cyber border */
  background: rgba(0, 0, 0, 0.8);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--color-cyber-green);
  backdrop-filter: blur(10px);
}

.entropy-bar {
  height: 100%;
  width: 0%;
  /* Cyber gradient */
  background: linear-gradient(90deg, var(--color-cyber-green), var(--color-cyber-blue));
  transition: width var(--transition-fast);
  box-shadow: 0 0 20px rgba(0, 255, 65, 0.8);
}

.entropy-particles {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
}

.entropy-value {
  font-size: 0.875rem;
  font-weight: 600;
  /* Cyber green color */
  color: var(--color-cyber-green);
  margin-top: var(--spacing-xs);
  text-align: center;
  text-shadow: 0 0 10px rgba(0, 255, 65, 0.8);
}

/* Verse Container */
.verse-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  /* Pure black background */
  background: rgba(0, 0, 0, 0.98);
  backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--spacing-md);
  animation: fadeIn var(--transition-slow);
}

.verse-container.hidden {
  display: none;
}

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

.verse-content {
  max-width: 800px;
  width: 100%;
  text-align: center;
  animation: slideUp 0.8s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.verse-reference {
  font-size: clamp(1rem, 3vw, 1.25rem);
  /* Cyber purple color */
  color: var(--color-cyber-purple);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.05em;
  text-shadow: 0 0 10px rgba(191, 0, 255, 0.8);
}

.verse-text {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 4vw, 1.875rem);
  line-height: 1.6;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xl);
  font-style: italic;
}

.copy-btn,
.continue-btn {
  padding: 0.75rem 2rem;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin: 0 var(--spacing-xs);
  border: none;
  font-family: var(--font-sans);
}

.copy-btn {
  /* Cyber border style */
  background: rgba(0, 255, 65, 0.1);
  color: var(--color-text-primary);
  border: 1px solid var(--color-cyber-green);
}

.copy-btn:hover {
  background: rgba(0, 255, 65, 0.2);
  box-shadow: 0 0 20px rgba(0, 255, 65, 0.5);
  transform: translateY(-2px);
}

.continue-btn {
  /* Cyber gradient button */
  background: linear-gradient(135deg, var(--color-cyber-green), var(--color-cyber-blue));
  color: #000000;
  font-weight: 700;
}

.continue-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 255, 65, 0.5);
}

/* Seed Input Panel */
.seed-input-panel {
  padding: var(--spacing-lg) var(--spacing-md);
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.seed-label {
  display: block;
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.05em;
}

.seed-input {
  width: 100%;
  padding: 1rem;
  font-size: 1rem;
  /* Dark input with cyber border */
  background: rgba(10, 10, 10, 0.8);
  border: 1px solid var(--color-cyber-green);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  margin-bottom: var(--spacing-md);
  transition: all var(--transition-fast);
}

.seed-input:focus {
  outline: none;
  border-color: var(--color-cyber-blue);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.seed-input::placeholder {
  color: var(--color-text-muted);
}

.initialize-btn {
  padding: 1rem 3rem;
  font-size: 1.125rem;
  font-weight: 700;
  /* Cyber gradient button */
  background: linear-gradient(135deg, var(--color-cyber-green), var(--color-cyber-blue));
  border: none;
  border-radius: var(--radius-md);
  color: #000000;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
}

.initialize-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 255, 65, 0.5);
}

.initialize-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Controls Panel */
.controls-panel {
  padding: var(--spacing-md);
  /* Black background with cyber border */
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--color-cyber-green);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  align-items: center;
  justify-content: center;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  min-width: 120px;
}

.control-group label {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.control-select,
.control-slider {
  padding: 0.5rem;
  /* Dark controls with cyber border */
  background: rgba(10, 10, 10, 0.8);
  border: 1px solid var(--color-cyber-green);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  cursor: pointer;
}

.control-slider {
  width: 100%;
  /* Cyber green accent */
  accent-color: var(--color-cyber-green);
}

.reset-btn {
  padding: 0.75rem 1.5rem;
  /* Cyber button style */
  background: rgba(0, 255, 65, 0.1);
  border: 1px solid var(--color-cyber-green);
  border-radius: var(--radius-md);
  color: var(--color-cyber-green);
  font-family: var(--font-sans);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.reset-btn:hover {
  background: rgba(0, 255, 65, 0.2);
  box-shadow: 0 0 20px rgba(0, 255, 65, 0.5);
  transform: translateY(-2px);
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  /* Black modal background */
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: var(--spacing-md);
  animation: fadeIn var(--transition-medium);
}

.modal.hidden {
  display: none;
}

.modal-content {
  position: relative;
  /* Dark modal with cyber border */
  background: #0a0a0a;
  border: 1px solid var(--color-cyber-green);
  border-radius: var(--radius-lg);
  max-width: 700px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  padding: var(--spacing-xl);
  animation: slideUp 0.5s ease;
}

.modal-close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
  padding: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background var(--transition-fast);
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.1);
}

.modal-content h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
  /* Cyber gradient text */
  background: linear-gradient(135deg, var(--color-cyber-green), var(--color-cyber-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.modal-content h3 {
  font-size: 1.25rem;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
  /* Cyber purple color */
  color: var(--color-cyber-purple);
}

.modal-body p {
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.modal-body ol {
  margin-left: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.modal-body li {
  margin-bottom: var(--spacing-sm);
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.modal-body strong {
  color: var(--color-text-primary);
}

/* Responsive Design */
@media (max-width: 768px) {
  .app-header {
    padding: var(--spacing-sm);
  }

  .icon-btn {
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }

  .canvas-container {
    max-height: 40vh;
  }

  .controls-panel {
    padding: var(--spacing-sm);
    gap: var(--spacing-sm);
  }

  .control-group {
    min-width: 100px;
  }

  .modal-content {
    padding: var(--spacing-lg);
  }

  .copy-btn,
  .continue-btn {
    padding: 0.625rem 1.5rem;
    font-size: 0.875rem;
    margin: var(--spacing-xs) 0;
    width: 100%;
  }
}

/* Utility Classes */
.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Added generative art section styles */
.art-container {
  padding: var(--spacing-lg) var(--spacing-md);
  background: rgba(0, 0, 0, 0.95);
  border-top: 1px solid var(--color-cyber-blue);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

.art-container.hidden {
  display: none;
}

.art-title {
  font-size: 1.5rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--color-cyber-blue), var(--color-cyber-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-align: center;
}

.art-canvas-wrapper {
  position: relative;
  border: 2px solid var(--color-cyber-purple);
  border-radius: var(--radius-md);
  box-shadow: 0 0 30px rgba(191, 0, 255, 0.3);
  background: #ffffff;
}

#art-canvas {
  display: block;
  border-radius: var(--radius-md);
  max-width: 100%;
  height: auto;
}

.art-download-btn {
  padding: 0.75rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--color-cyber-blue), var(--color-cyber-purple));
  border: none;
  border-radius: var(--radius-md);
  color: #000000;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
}

.art-download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(191, 0, 255, 0.5);
}