:root {
    /* Primary Colors - KELLER Brand */
    --color-primary: #006ccd;
    --color-primary-dark: #00519a;
    --color-primary-light: #9bc8ea;
    
    /* Secondary Colors */
    --color-secondary: #d80012;
    --color-secondary-dark: #a5000e;
    
    /* Neutral Colors */
    --color-dark: #242424;
    --color-darker: #0b0b0b;
    --color-gray-dark: #343a40;
    --color-gray: #6c757d;
    --color-gray-light: #707070;
    --color-light: #f2f2f2;
    --color-lighter: #f8f8f8;
    --color-white: #ffffff;
    
    /* Semantic Colors */
    --color-success: #28a745;
    --color-info: #17a2b8;
    --color-warning: #ffc107;
    --color-danger: #dc3545;
    
    /* Border Colors */
    --border-color: #242424;
    --border-color-primary: #006ccd;
    --border-color-light: #ced4da;
    
    /* Text Colors */
    --text-color: #212529;
    --text-color-muted: #6c757d;
    --text-color-light: #f2f2f2;
    
    /* Background Colors */
    --bg-body: #ffffff;
    --bg-dark: #242424;
    --bg-light: #f2f2f2;
    
    /* Font Family */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-family-monospace: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    
    /* Font Sizes */
    --font-size-xs: 0.875rem;
    --font-size-sm: 0.984375rem;
    --font-size-base: 1.125rem;
    --font-size-md: 1.40625rem;
    --font-size-lg: 1.6875rem;
    --font-size-xl: 2rem;
    --font-size-2xl: 2.5rem;
    --font-size-3xl: 3rem;
    --font-size-4xl: 4rem;
    --font-size-5xl: 6rem;
    
    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 700;
    
    /* Line Heights */
    --line-height-base: 1.5;
    --line-height-sm: 1.2;
    --line-height-lg: 1.8;
    
    /* Spacing */
    --spacing-0: 0;
    --spacing-1: 0.5rem;
    --spacing-2: 1rem;
    --spacing-3: 2rem;
    --spacing-4: 3rem;
    --spacing-5: 6rem;
    
    /* Grid */
    --container-max-width: 1300px;
    --container-padding: 20px;
    --grid-gutter: 20px;
    
    /* Border Radius */
    --border-radius-sm: 0.2rem;
    --border-radius: 0.25rem;
    --border-radius-lg: 0.3rem;
    --border-radius-pill: 1000px;
    
    /* Shadows */
    --shadow-sm: 0 .125rem .25rem rgba(0,0,0,.075);
    --shadow: 0 .5rem 1rem rgba(0,0,0,.15);
    --shadow-lg: 0 1rem 3rem rgba(0,0,0,.175);
    --shadow-header: 0 4px 15px rgba(0,0,0,.16);
    
    /* Transitions */
    --transition-base: all .15s ease-in-out;
    --transition-fast: all .3s ease-in-out;
    --transition-slow: all .5s ease-in-out;
    
    /* Header */
    --header-height: 80px;
    --header-height-scrolled: 60px;
    --header-padding: 20px;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-header: 10;
}

/* Bootstrap-like breakpoint variables for reference */
/* xs: 0 */
/* sm: 576px */
/* md: 768px */
/* lg: 992px */
/* xl: 1400px */