/* ============================================
   CSS Custom Properties (Variables)
   Dependable Auto Repair Website
   ============================================ */

:root {
  /* ==================== Colors ==================== */
  
  /* Primary Colors - Navy Blue (Trust & Reliability) */
  --color-primary: #1a365d;
  --color-primary-dark: #0f2342;
  --color-primary-light: #2d4a7c;
  --color-primary-lighter: #4a6fa5;
  
  /* Secondary Colors - Red (Action & Urgency) */
  --color-secondary: #e53e3e;
  --color-secondary-dark: #c53030;
  --color-secondary-light: #fc8181;
  
  /* Accent Colors */
  --color-accent: #f7fafc;
  --color-accent-dark: #edf2f7;
  
  /* Neutral Colors */
  --color-white: #ffffff;
  --color-black: #000000;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  
  /* Text Colors */
  --color-text: #2d3748;
  --color-text-light: #718096;
  --color-text-lighter: #a0aec0;
  --color-text-dark: #1a202c;
  
  /* Status Colors */
  --color-success: #38a169;
  --color-success-light: #68d391;
  --color-error: #e53e3e;
  --color-error-light: #fc8181;
  --color-warning: #d69e2e;
  --color-warning-light: #f6e05e;
  --color-info: #3182ce;
  --color-info-light: #63b3ed;
  
  /* ==================== Typography ==================== */
  
  /* Font Families */
  --font-primary: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-secondary: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Courier New', Courier, monospace;
  
  /* Font Sizes */
  --font-size-xs: 0.75rem;      /* 12px */
  --font-size-sm: 0.875rem;     /* 14px */
  --font-size-base: 1rem;       /* 16px */
  --font-size-lg: 1.125rem;     /* 18px */
  --font-size-xl: 1.25rem;      /* 20px */
  --font-size-2xl: 1.5rem;      /* 24px */
  --font-size-3xl: 1.875rem;    /* 30px */
  --font-size-4xl: 2.25rem;     /* 36px */
  --font-size-5xl: 3rem;        /* 48px */
  --font-size-6xl: 3.75rem;     /* 60px */
  
  /* 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;
  
  /* Line Heights */
  --line-height-none: 1;
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;
  
  /* Letter Spacing */
  --letter-spacing-tighter: -0.05em;
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;
  --letter-spacing-wider: 0.05em;
  --letter-spacing-widest: 0.1em;
  
  /* ==================== Spacing ==================== */
  
  --spacing-0: 0;
  --spacing-px: 1px;
  --spacing-0-5: 0.125rem;      /* 2px */
  --spacing-1: 0.25rem;         /* 4px */
  --spacing-1-5: 0.375rem;      /* 6px */
  --spacing-2: 0.5rem;          /* 8px */
  --spacing-2-5: 0.625rem;      /* 10px */
  --spacing-3: 0.75rem;         /* 12px */
  --spacing-3-5: 0.875rem;      /* 14px */
  --spacing-4: 1rem;            /* 16px */
  --spacing-5: 1.25rem;         /* 20px */
  --spacing-6: 1.5rem;          /* 24px */
  --spacing-7: 1.75rem;         /* 28px */
  --spacing-8: 2rem;            /* 32px */
  --spacing-9: 2.25rem;         /* 36px */
  --spacing-10: 2.5rem;         /* 40px */
  --spacing-11: 2.75rem;        /* 44px */
  --spacing-12: 3rem;           /* 48px */
  --spacing-14: 3.5rem;         /* 56px */
  --spacing-16: 4rem;           /* 64px */
  --spacing-20: 5rem;           /* 80px */
  --spacing-24: 6rem;           /* 96px */
  --spacing-28: 7rem;           /* 112px */
  --spacing-32: 8rem;           /* 128px */
  
  /* ==================== Layout ==================== */
  
  /* Container */
  --container-max-width: 1200px;
  --container-padding: 1rem;
  --container-padding-mobile: 1rem;
  --container-padding-tablet: 1.5rem;
  --container-padding-desktop: 2rem;
  
  /* Widths */
  --width-xs: 20rem;            /* 320px */
  --width-sm: 24rem;            /* 384px */
  --width-md: 28rem;            /* 448px */
  --width-lg: 32rem;            /* 512px */
  --width-xl: 36rem;            /* 576px */
  --width-2xl: 42rem;           /* 672px */
  --width-3xl: 48rem;           /* 768px */
  --width-4xl: 56rem;           /* 896px */
  --width-5xl: 64rem;           /* 1024px */
  --width-6xl: 72rem;           /* 1152px */
  --width-7xl: 80rem;           /* 1280px */
  
  /* Heights */
  --height-header: 80px;
  --height-header-mobile: 64px;
  --height-footer: auto;
  
  /* ==================== Border ==================== */
  
  /* Border Radius */
  --border-radius-none: 0;
  --border-radius-sm: 0.125rem;     /* 2px */
  --border-radius-base: 0.25rem;    /* 4px */
  --border-radius-md: 0.375rem;     /* 6px */
  --border-radius-lg: 0.5rem;       /* 8px */
  --border-radius-xl: 0.75rem;      /* 12px */
  --border-radius-2xl: 1rem;        /* 16px */
  --border-radius-3xl: 1.5rem;      /* 24px */
  --border-radius-full: 9999px;
  
  /* Border Width */
  --border-width-0: 0;
  --border-width-1: 1px;
  --border-width-2: 2px;
  --border-width-4: 4px;
  --border-width-8: 8px;
  
  /* ==================== Shadows ==================== */
  
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-2xl: 0 35px 60px -15px rgba(0, 0, 0, 0.3);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
  --shadow-none: none;
  
  /* ==================== Transitions ==================== */
  
  /* Duration */
  --transition-duration-75: 75ms;
  --transition-duration-100: 100ms;
  --transition-duration-150: 150ms;
  --transition-duration-200: 200ms;
  --transition-duration-300: 300ms;
  --transition-duration-500: 500ms;
  --transition-duration-700: 700ms;
  --transition-duration-1000: 1000ms;
  
  /* Timing Functions */
  --transition-timing-linear: linear;
  --transition-timing-ease: ease;
  --transition-timing-ease-in: ease-in;
  --transition-timing-ease-out: ease-out;
  --transition-timing-ease-in-out: ease-in-out;
  
  /* Common Transitions */
  --transition-fast: all 150ms ease-in-out;
  --transition-base: all 250ms ease-in-out;
  --transition-slow: all 350ms ease-in-out;
  --transition-colors: color 150ms ease-in-out, background-color 150ms ease-in-out, border-color 150ms ease-in-out;
  --transition-opacity: opacity 200ms ease-in-out;
  --transition-transform: transform 200ms ease-in-out;
  
  /* ==================== Z-Index ==================== */
  
  --z-index-dropdown: 1000;
  --z-index-sticky: 1020;
  --z-index-fixed: 1030;
  --z-index-modal-backdrop: 1040;
  --z-index-modal: 1050;
  --z-index-popover: 1060;
  --z-index-tooltip: 1070;
  
  /* ==================== Breakpoints ==================== */
  /* Note: These are for reference, use in media queries */
  
  --breakpoint-xs: 320px;
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
  
  /* ==================== Opacity ==================== */
  
  --opacity-0: 0;
  --opacity-5: 0.05;
  --opacity-10: 0.1;
  --opacity-20: 0.2;
  --opacity-25: 0.25;
  --opacity-30: 0.3;
  --opacity-40: 0.4;
  --opacity-50: 0.5;
  --opacity-60: 0.6;
  --opacity-70: 0.7;
  --opacity-75: 0.75;
  --opacity-80: 0.8;
  --opacity-90: 0.9;
  --opacity-95: 0.95;
  --opacity-100: 1;
}

/* ==================== Dark Mode Variables (Optional) ==================== */
/* Uncomment if dark mode is needed in the future */

/*
@media (prefers-color-scheme: dark) {
  :root {
    --color-text: #e2e8f0;
    --color-text-light: #cbd5e0;
    --color-background: #1a202c;
    --color-surface: #2d3748;
  }
}
*/