/**
 * Main Styles
 */

@import url('./variables.css');
@import url('./topbar.css?v=1');

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Canvas */
#canvas {
  position: fixed;
  top: 80px; /* Space for TopBar - will be overridden on mobile */
  left: 20px;
  right: 20px;
  bottom: 20px;
  width: calc(100vw - 40px);
  height: calc(100vh - 100px);
  z-index: var(--z-canvas);
  cursor: crosshair;
  touch-action: none;
}

/* Mobile-specific canvas adjustments */
@media (max-width: 768px) {
  #canvas {
    top: auto; /* Let JS calculate based on topbar height */
    left: 10px;
    right: 10px;
    bottom: 10px;
  }
}

@media (max-width: 480px) {
  #canvas {
    left: 5px;
    right: 5px;
    bottom: 5px;
  }
}

/* Controls Panel */
#controls {
  position: fixed;
  top: var(--spacing-lg);
  left: var(--spacing-lg);
  z-index: var(--z-controls);
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  min-width: 320px;
}

.controls-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.controls-row {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

/* Buttons */
button {
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

button:hover:not(:disabled) {
  background: var(--color-surface-hover);
  border-color: var(--color-primary);
}

button:active:not(:disabled) {
  transform: translateY(1px);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

button.primary {
  background: var(--color-primary);
  color: var(--color-background);
  border-color: var(--color-primary);
}

button.primary:hover:not(:disabled) {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

/* Input Controls */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--color-border);
  border-radius: var(--border-radius-full);
  outline: none;
}

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

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

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

input[type="range"]::-moz-range-thumb:hover {
  transform: scale(1.2);
}

.slider-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.slider-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  min-width: 60px;
}

.slider-value {
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  font-family: var(--font-family-mono);
  min-width: 40px;
  text-align: right;
}

/* Preset Buttons */
.preset-buttons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xs);
}

.preset-buttons button {
  font-size: var(--font-size-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
}

/* Loading Overlay */
#loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 17, 21, 0.95);
  z-index: var(--z-loading);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
}

#loading-overlay.visible {
  display: flex;
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

#loading-text {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
}

.loading-progress-bar {
  width: 300px;
  height: 4px;
  background: var(--color-border);
  border-radius: var(--border-radius-full);
  overflow: hidden;
}

#loading-progress {
  height: 100%;
  background: var(--color-primary);
  width: 0%;
  transition: width var(--transition-fast);
}

/* Welcome Modal */
#welcome-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 17, 21, 0.98);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  overflow-y: auto;
}

.modal-content {
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-xl);
}

.modal-content h1 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.modal-content h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

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

.modal-content ul {
  list-style: none;
  margin-bottom: var(--spacing-lg);
}

.modal-content li {
  padding: var(--spacing-xs) 0;
  padding-left: var(--spacing-lg);
  position: relative;
  color: var(--color-text-secondary);
}

.modal-content li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

.modal-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.modal-actions button {
  flex: 1;
  padding: var(--spacing-md);
  font-size: var(--font-size-base);
}

/* Headphone Warning */
.headphone-warning {
  background: var(--color-warning);
  color: var(--color-background);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Icons */
.icon {
  width: 18px;
  height: 18px;
  stroke-width: 2;
}

/* Responsive */
@media (max-width: 768px) {
  #controls {
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    right: var(--spacing-sm);
    min-width: 0;
  }
  
  .modal-content {
    padding: var(--spacing-lg);
    margin: var(--spacing-md);
  }
  
  .modal-content h1 {
    font-size: var(--font-size-2xl);
  }
  
  .modal-content h2 {
    font-size: var(--font-size-lg);
  }
  
  .modal-content p {
    font-size: var(--font-size-sm);
  }
}

@media (max-width: 480px) {
  #welcome-modal {
    padding: var(--spacing-md);
  }
  
  .modal-content {
    padding: var(--spacing-md);
    margin: 0;
    border-radius: var(--border-radius-lg);
  }
  
  .modal-content h1 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
  }
  
  .modal-content h2 {
    font-size: var(--font-size-base);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
  }
  
  .modal-content p {
    font-size: var(--font-size-xs);
    margin-bottom: var(--spacing-sm);
  }
  
  .modal-content li {
    font-size: var(--font-size-xs);
    padding: 2px 0;
    padding-left: var(--spacing-md);
  }
  
  .headphone-warning {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
  }
  
  .modal-actions button {
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .modal-actions button .icon {
    width: 18px;
    height: 18px;
  }
}

@media (max-width: 360px) {
  .modal-content {
    padding: var(--spacing-sm);
  }
  
  .modal-content h1 {
    font-size: var(--font-size-lg);
  }
}