/* CSS Variables - Red Color Scheme */
:root {
  /* Primary Colors - Red System */
  --color-primary: #C41E3A;
  --color-primary-light: #E63946;
  --color-primary-dark: #8B0000;
  --color-primary-hover: #B01230;
  
  /* Secondary Colors */
  --color-secondary: #1A1A2E;
  --color-secondary-light: #2D2D44;
  --color-accent: #D4AF37;
  
  /* Neutral Colors */
  --color-white: #FFFFFF;
  --color-black: #000000;
  --color-gray-100: #F8F9FA;
  --color-gray-200: #E9ECEF;
  --color-gray-300: #DEE2E6;
  --color-gray-400: #CED4DA;
  --color-gray-500: #ADB5BD;
  --color-gray-600: #6C757D;
  --color-gray-700: #495057;
  --color-gray-800: #343A40;
  --color-gray-900: #212529;
  
  /* Background Colors */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8F9FA;
  --bg-dark: #1A1A2E;
  --bg-overlay: rgba(26, 26, 46, 0.9);
  
  /* Text Colors */
  --text-primary: #212529;
  --text-secondary: #6C757D;
  --text-light: #FFFFFF;
  --text-muted: #ADB5BD;
  
  /* Border Colors */
  --border-color: #DEE2E6;
  --border-color-light: #E9ECEF;
  --border-color-dark: #CED4DA;
  
  /* Status Colors */
  --color-success: #28A745;
  --color-warning: #FFC107;
  --color-danger: #DC3545;
  --color-info: #17A2B8;
  
  /* Typography */
  --font-family-base: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  --font-family-heading: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, 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;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.25;
  --line-height-base: 1.5;
  --line-height-loose: 1.75;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-tooltip: 1060;
  
  /* Container */
  --container-max-width: 1200px;
  --container-padding: 1rem;
}