/* ============================================
   Xiniu Construction Machinery - CSS Variables
   ============================================ */

:root {
  /* Brand Colors */
  --color-primary: #C41230;
  --color-primary-dark: #A00F28;
  --color-primary-light: #E01A3C;
  
  /* Text Colors */
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #666666;
  --color-text-muted: #999999;
  --color-text-white: #FFFFFF;
  
  /* Background Colors */
  --color-bg: #FFFFFF;
  --color-bg-alt: #F5F5F5;
  --color-bg-dark: #1E1E1E;
  
  /* Border Colors */
  --color-border: #E5E5E5;
  --color-border-light: #F0F0F0;
  
  /* Shadows */
  --shadow-card: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-card-hover: 0 8px 24px rgba(0,0,0,0.12);
  --shadow-header: 0 2px 12px rgba(0,0,0,0.08);
  
  /* Typography */
  --font-heading: 'HarmonyOS Sans TC', 'Arial', sans-serif;
  --font-body: 'HarmonyOS Sans TC', 'Arial', sans-serif;
  --font-chinese: 'HarmonyOS Sans TC', sans-serif;
  
  /* Font Sizes */
  --text-xs: 12px;
  --text-sm: 13px;
  --text-base: 14px;
  --text-md: 15px;
  --text-lg: 16px;
  --text-xl: 20px;
  --text-2xl: 24px;
  --text-3xl: 30px;
  --text-4xl: 36px;
  --text-5xl: 48px;
  
  /* Line Heights */
  --leading-tight: 1.2;
  --leading-normal: 1.5;
  --leading-relaxed: 1.7;
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  
  /* Container */
  --container-max: 1200px;
  --container-padding: 16px;
  --header-logo-padding-left: 16px;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 50%;
  
  /* Transitions */
  --transition-fast: 200ms ease-out;
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms ease-out;
  
  /* Header */
  --header-height: 70px;
  
  /* Z-Index */
  --z-header: 1000;
  --z-mobile-menu: 999;
  --z-overlay: 998;
}