/* ===================================
   CSS Variables - Design System
   =================================== */

:root {
    /* Primary Colors - BMW Style Blue */
    --primary-blue: #0066B1;
    --primary-blue-light: #0088E6;
    --primary-blue-dark: #004A8F;
    --primary-blue-hover: #005596;
    
    /* Secondary Colors */
    --secondary-blue: #00A3E0;
    --accent-orange: #FF6B35;
    --accent-orange-light: #FF8F66;
    --accent-orange-dark: #E55A2B;
    
    /* Background Colors */
    --bg-dark: #1A1A2E;
    --bg-dark-secondary: #16213E;
    --bg-light: #F5F7FA;
    --bg-white: #FFFFFF;
    --bg-gradient-dark: linear-gradient(135deg, #1A1A2E 0%, #16213E 50%, #0F3460 100%);
    --bg-gradient-primary: linear-gradient(135deg, #0066B1 0%, #00A3E0 100%);
    --bg-gradient-accent: linear-gradient(135deg, #FF6B35 0%, #FF8F66 100%);
    
    /* Text Colors */
    --text-primary: #2D3436;
    --text-secondary: #636E72;
    --text-light: #B2BEC3;
    --text-white: #FFFFFF;
    --text-dark: #1A1A2E;
    
    /* Border Colors */
    --border-light: #E8ECEF;
    --border-primary: #0066B1;
    --border-dark: #2D3436;
    
    /* Shadow Colors */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.24);
    --shadow-primary: 0 8px 32px rgba(0, 102, 177, 0.3);
    --shadow-accent: 0 8px 32px rgba(255, 107, 53, 0.3);
    
    /* 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;
    --spacing-section: 100px;
    
    /* Typography */
    --font-primary: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, 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-size-6xl: 3.75rem;
    --font-size-hero: 4.5rem;
    --line-height-tight: 1.2;
    --line-height-normal: 1.6;
    --line-height-relaxed: 1.8;
    
    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    --transition-slower: 800ms ease;
    --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Z-Index */
    --z-index-dropdown: 100;
    --z-index-sticky: 200;
    --z-index-fixed: 300;
    --z-index-modal-backdrop: 400;
    --z-index-modal: 500;
    --z-index-tooltip: 600;
    --z-index-toast: 700;
    
    /* Container */
    --container-max-width: 1400px;
    --container-padding: 20px;
    
    /* Header */
    --header-height: 80px;
    --header-height-mobile: 70px;
    
    /* Animation */
    --animation-duration-fast: 150ms;
    --animation-duration-base: 300ms;
    --animation-duration-slow: 500ms;
    --animation-timing-ease: ease;
    --animation-timing-ease-in: ease-in;
    --animation-timing-ease-out: ease-out;
    --animation-timing-ease-in-out: ease-in-out;
    --animation-timing-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Dark Mode Variables */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-white: #1A1A2E;
        --bg-light: #16213E;
        --text-primary: #F5F7FA;
        --text-secondary: #B2BEC3;
        --border-light: #2D3436;
    }
}