/* variables.css - CSS custom properties for consistent theming */

:root {
  /* Color palette */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --primary-color: #667eea;
  --primary-hover: #5a6fd8;
  --accent-color: #ffd700;
  --error-color: #e74c3c;
  --success-color: #27ae60;
  --warning-color: #f39c12;
  --info-color: #3498db;
  
  /* Text colors */
  --text-primary: #333;
  --text-secondary: #666;
  --text-muted: #999;
  --text-white: #fff;
  
  /* Background colors */
  --bg-white: #fff;
  --bg-light: rgba(255, 255, 255, 0.95);
  --bg-overlay: rgba(0, 0, 0, 0.5);
  --bg-hover: #f8f9fa;
  
  /* Border colors */
  --border-light: #e1e5e9;
  --border-focus: var(--primary-color);
  
  /* Spacing */
  --spacing-xs: 5px;
  --spacing-sm: 10px;
  --spacing-md: 15px;
  --spacing-lg: 20px;
  --spacing-xl: 25px;
  --spacing-xxl: 30px;
  
  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 15px;
  --radius-circle: 50%;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.4s ease;
  
  /* Shadows */
  --shadow-sm: 0 4px 15px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.15);
  --shadow-button: 0 4px 15px rgba(102, 126, 234, 0.4);
  --shadow-button-hover: 0 6px 20px rgba(102, 126, 234, 0.6);
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-md: 16px;
  --font-size-lg: 1.1rem;
  --font-size-xl: 2rem;
  --font-size-xxl: 2.5rem;
  
  /* Z-index levels */
  --z-loading: 1000;
  --z-toast: 1001;
  --z-modal: 1002;
  
  /* Container sizes */
  --container-max-width: 1200px;
  --input-height: 40px;
  --button-height: 44px;
  --voice-button-size: 40px;
  --swap-button-size: 50px;
}

/* Dark mode support (future enhancement) */
@media (prefers-color-scheme: dark) {
  :root {
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-muted: #888;
    --bg-light: rgba(30, 30, 30, 0.95);
    --bg-hover: #2a2a2a;
    --border-light: #444;
  }
}