/* CSS Variables */
:root {
  --clr-primary: #3b82f6;
  --clr-secondary: #1e40af;
  --clr-success: #10b981;
  --clr-warning: #f59e0b;
  --clr-error: #ef4444;
  --clr-background: #f8fafc;
  --clr-surface: #ffffff;
  --clr-text: #1e293b;
  --clr-text-muted: #64748b;
  --clr-border: #e2e8f0;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
}

/* Dark Mode Variables */
[data-theme="dark"] {
  --clr-background: #0f172a;
  --clr-surface: #1e293b;
  --clr-text: #f1f5f9;
  --clr-text-muted: #94a3b8;
  --clr-border: #334155;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--clr-text);
  background-color: var(--clr-background);
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-md);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0 var(--spacing-sm);
  gap: var(--spacing-lg);
  border-bottom: 2px solid var(--clr-border);
}

.header h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--clr-primary);
}

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

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.xp-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-weight: 600;
  color: var(--clr-success);
}

.xp-info progress {
  width: 80px;
  height: 6px;
  border-radius: var(--radius-sm);
  background: var(--clr-border);
  accent-color: var(--clr-primary);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--clr-surface);
  border-radius: var(--radius-md);
}

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

.xp-label {
  font-weight: 600;
  color: var(--clr-text-muted);
}

.xp-value {
  font-weight: 700;
  color: var(--clr-success);
  font-size: 1rem;
}

/* Dark Mode Toggle */
.dark-mode-toggle {
  background: var(--clr-surface);
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  font-size: 1.2rem;
}

.dark-mode-toggle:hover {
  background: var(--clr-primary);
  border-color: var(--clr-primary);
  color: white;
  transform: scale(1.05);
}

.dark-mode-toggle:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

/* Dark mode icon states */
[data-theme="dark"] .light-icon {
  display: inline;
}

[data-theme="dark"] .dark-icon {
  display: none;
}

[data-theme="light"] .light-icon,
.dark-icon {
  display: inline;
}

[data-theme="light"] .dark-icon {
  display: none;
}

/* Tab Navigation */
.tab-navigation {
  display: flex;
  gap: var(--spacing-sm);
  border-bottom: 2px solid var(--clr-border);
}

.tab-btn {
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  background: transparent;
  color: var(--clr-text-muted);
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  transition: all 0.3s ease;
  position: relative;
}

.tab-btn:hover {
  color: var(--clr-primary);
  background: rgba(59, 130, 246, 0.1);
}

.tab-btn.active {
  color: var(--clr-primary);
  background: var(--clr-surface);
  border-bottom: 3px solid var(--clr-primary);
}

/* Tab Content */
.tab-content {
  flex: 1;
  min-height: 0;
}

.tab-panel {
  display: none;
  animation: fadeIn 0.3s ease-in-out;
}

.tab-panel.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Map Section */
.map-section h2 {
  margin-bottom: var(--spacing-lg);
  color: var(--clr-text);
  font-size: 1.5rem;
  font-weight: 600;
}

.map-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

/* Game Section */
.game-section {
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.panel-header {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--clr-border);
  background: var(--clr-surface);
  color: var(--clr-text);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.panel-header h3 {
  margin-bottom: var(--spacing-md);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--clr-primary);
}

.mode-buttons {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.mode-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--clr-text-muted);
  cursor: pointer;
  font-size: .9rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

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

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

.mode-btn:focus {
  outline: 3px solid var(--clr-primary);
  outline-offset: 2px;
}

.panel-body {
  padding: var(--spacing-sm);
  min-height: auto;
  flex: 1 1 auto;
}

.placeholder-text {
  color: var(--clr-text-muted);
  font-size: 1.1rem;
  text-align: center;
}

/* Progress Section */
.progress-section {
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-lg);
}

.progress-section h3 {
  margin-bottom: var(--spacing-lg);
  color: var(--clr-text);
  font-size: 1.25rem;
  font-weight: 600;
}

.progress-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: var(--spacing-sm);
    gap: var(--spacing-lg);
  }
  
  .header {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
  
  .header h1 {
    font-size: 1.5rem;
  }
  
  .header-controls {
    width: 100%;
    justify-content: center;
    gap: var(--spacing-sm);
  }
  
  .tab-navigation {
    flex-direction: column;
    gap: 0;
  }
  
  .tab-btn {
    border-radius: 0;
    text-align: left;
    padding: var(--spacing-md);
  }
  
  .tab-btn.active {
    color: var(--clr-primary);
    background: var(--clr-surface);
    border-bottom: 3px solid var(--clr-primary);
  }
  
  .mode-buttons {
    justify-content: center;
  }
  
  .category-grid {
    grid-template-columns: 1fr;
  }
  
  .progress-container {
    grid-template-columns: 1fr;
  }
}