/* School Route Mapper - Main Styles */
:root {
  /* Color Palette */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --border-color: #e2e8f0;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  
  /* Accent Colors */
  --accent-primary: #3b82f6;
  --accent-hover: #2563eb;
  --accent-active: #1d4ed8;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  
  /* Grid */
  --grid-color: #94a3b8;
  --grid-alpha: 0.5;
  --grid-hover-alpha: 0.8;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-medium: 300ms ease-in-out;
}

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow: hidden;
  height: 100vh;
}

/* Layout */
.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-sm) var(--spacing-md);
  height: 60px;
  box-shadow: var(--shadow-sm);
  z-index: 100;
}

.main-content {
  display: flex;
  height: calc(100vh - 60px);
}

.left-toolbar {
  width: 280px;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  overflow-y: auto;
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
}

.canvas-container {
  flex: 1;
  position: relative;
  background-color: var(--bg-tertiary);
  overflow: hidden;
}

.right-panel {
  width: 300px;
  background-color: var(--bg-secondary);
  border-left: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

/* Top Bar Components */
.title-section h1 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
}

.mode-section {
  display: flex;
  gap: var(--spacing-xs);
}

.mode-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
}

.mode-btn:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--accent-primary);
}

.mode-btn.active {
  background-color: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
}

.file-actions {
  display: flex;
  gap: var(--spacing-xs);
}

.file-actions button,
.settings-section button {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
}

.file-actions button:hover,
.settings-section button:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--accent-primary);
}

/* Toolbar Sections */
.tool-section,
.grid-section,
.background-section,
.categories-section,
.route-section {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.tool-section:last-child,
.grid-section:last-child,
.background-section:last-child,
.categories-section:last-child,
.route-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.tool-section h3,
.grid-section h3,
.background-section h3,
.categories-section h3,
.route-section h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

/* Tool Buttons */
.tool-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.tool-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
  width: 100%;
}

.tool-btn:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--accent-primary);
}

.tool-btn.active {
  background-color: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
}

.tool-btn .icon {
  font-size: var(--font-size-lg);
  width: 20px;
  text-align: center;
}

.tool-btn .label {
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* Form Controls */
label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  font-weight: 500;
}

input[type="number"],
input[type="text"],
input[type="range"],
select {
  width: 100%;
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-fast);
}

input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

input[type="range"] {
  padding: 0;
}

input[type="checkbox"] {
  margin-right: var(--spacing-xs);
}

/* Canvas */
#main-canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
}

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

.zoom-controls {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  pointer-events: auto;
}

.zoom-controls button {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

.zoom-controls button:hover {
  background-color: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
}

.coordinates-display {
  position: absolute;
  bottom: var(--spacing-md);
  left: var(--spacing-md);
  background-color: rgba(0, 0, 0, 0.8);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-family: 'SF Mono', Monaco, monospace;
  font-size: var(--font-size-xs);
  pointer-events: auto;
}

/* Right Panel */
.panel-tabs {
  display: flex;
  background-color: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
}

.tab-btn {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  background-color: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
  border-bottom: 2px solid transparent;
}

.tab-btn:hover {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

.tab-btn.active {
  background-color: var(--bg-primary);
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}

.tab-content {
  padding: var(--spacing-md);
  overflow-y: auto;
  flex: 1;
}

.tab-content h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

/* Buttons */
button {
  font-family: inherit;
  font-size: var(--font-size-sm);
}

.primary-btn {
  background-color: var(--accent-primary);
  color: white;
  border: 1px solid var(--accent-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
}

.primary-btn:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
}

.danger-btn {
  background-color: var(--danger);
  color: white;
  border: 1px solid var(--danger);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
}

.danger-btn:hover {
  background-color: #dc2626;
  border-color: #dc2626;
}

/* Modals */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-content {
  background-color: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 90%;
  max-width: 500px;
  max-height: 80vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.close-btn {
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  cursor: pointer;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.close-btn:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: var(--spacing-lg);
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
}

/* Settings Groups */
.settings-group {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.settings-group:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.settings-group h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

/* POI Selection */
.poi-selection {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.checkpoints-section {
  margin-top: var(--spacing-md);
}

.checkpoints-section h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.route-options {
  margin: var(--spacing-md) 0;
}

.route-options label {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-xs);
  font-weight: normal;
}

.route-options input[type="radio"] {
  margin-right: var(--spacing-xs);
  width: auto;
}

/* Route Info */
.route-stats {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.stat {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm);
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-sm);
}

.stat label {
  font-weight: 600;
  margin: 0;
}

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

.animation-controls button {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.animation-controls button:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--accent-primary);
}

/* Background Controls */
.background-controls {
  margin-top: var(--spacing-md);
}

.position-controls {
  margin-top: var(--spacing-sm);
}

/* Category List */
#category-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.category-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--bg-primary);
}

.category-color {
  width: 20px;
  height: 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.category-name {
  flex: 1;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.category-actions {
  display: flex;
  gap: var(--spacing-xs);
}

.category-actions button {
  padding: var(--spacing-xs);
  border: none;
  background: none;
  cursor: pointer;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.category-actions button:hover {
  color: var(--text-primary);
}

/* Layers Tree */
#layers-tree {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.layer-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.layer-item:hover {
  background-color: var(--bg-tertiary);
}

.layer-item.selected {
  background-color: var(--accent-primary);
  color: white;
}

/* Responsive Design */
@media (max-width: 1200px) {
  .left-toolbar {
    width: 250px;
  }
  
  .right-panel {
    width: 250px;
  }
}

@media (max-width: 768px) {
  .top-bar {
    flex-wrap: wrap;
    height: auto;
    padding: var(--spacing-sm);
  }
  
  .title-section {
    width: 100%;
    margin-bottom: var(--spacing-sm);
  }
  
  .left-toolbar,
  .right-panel {
    width: 200px;
  }
  
  .file-actions {
    flex-wrap: wrap;
  }
  
  .modal-content {
    width: 95%;
  }
}

/* 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);
  border: 0;
}

/* Animation Classes */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

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

.spin {
  animation: spin 1s linear infinite;
}

/* Loading States */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--accent-primary);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}