/* FireFlies Energy Solutions - Design System Variables */

:root {
  /* ========== Color System ========== */
  
  /* Primary Palette */
  --color-primary-yellow: #FFF200;
  --color-primary-yellow-dark: #E6DA00;
  --color-primary-yellow-light: #FFFF66;
  --color-primary-black: #000000;
  --color-primary-black-soft: #1A1A1A;
  
  /* Neutral Palette */
  --color-white: #FFFFFF;
  --color-gray-50: #FAFAFA;
  --color-gray-100: #F5F5F5;
  --color-gray-200: #EEEEEE;
  --color-gray-300: #E0E0E0;
  --color-gray-400: #BDBDBD;
  --color-gray-500: #9E9E9E;
  --color-gray-600: #757575;
  --color-gray-700: #616161;
  --color-gray-800: #424242;
  --color-gray-900: #212121;
  
  /* Semantic Colors */
  --color-success: #10B981;
  --color-success-light: #D1FAE5;
  --color-success-dark: #059669;
  --color-warning: #F59E0B;
  --color-warning-light: #FEF3C7;
  --color-warning-dark: #D97706;
  --color-error: #EF4444;
  --color-error-light: #FEE2E2;
  --color-error-dark: #DC2626;
  --color-info: #3B82F6;
  --color-info-light: #DBEAFE;
  --color-info-dark: #2563EB;
  
  /* Solar-Inspired Accents */
  --color-solar-orange: #FF9500;
  --color-solar-amber: #FFBF00;
  --color-solar-gold: #FFD700;
  --color-energy-blue: #0EA5E9;
  --color-eco-green: #22C55E;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #FFF200 0%, #FFE600 100%);
  --gradient-dark: linear-gradient(135deg, #1A1A1A 0%, #000000 100%);
  --gradient-hero: linear-gradient(135deg, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.3) 100%);
  --gradient-card: linear-gradient(180deg, rgba(255,255,255,0) 0%, rgba(255,242,0,0.05) 100%);
  --gradient-overlay: linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.8) 100%);
  
  /* ========== Typography System ========== */
  
  /* Font Families */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-headings: 'Poppins', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  
  /* Fluid Type Scale - Modern, Smaller, Cleaner */
  --text-xs: 0.6875rem;     /* 11px */
  --text-sm: 0.8125rem;     /* 13px */
  --text-base: 0.9375rem;   /* 15px */
  --text-lg: 1rem;          /* 16px */
  --text-xl: 1.125rem;      /* 18px */
  --text-2xl: 1.375rem;     /* 22px */
  --text-3xl: 1.625rem;     /* 26px */
  --text-4xl: 2rem;         /* 32px */
  --text-5xl: 2.5rem;       /* 40px */
  --text-6xl: 3rem;         /* 48px */
  --text-7xl: 3.5rem;       /* 56px */
  
  /* 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 - Tighter for modern look */
  --line-height-tight: 1.2;
  --line-height-snug: 1.3;
  --line-height-normal: 1.4;
  --line-height-relaxed: 1.5;
  --line-height-loose: 1.6;
  
  /* 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 System ========== */
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
  --space-40: 10rem;
  --space-48: 12rem;
  --space-56: 14rem;
  --space-64: 16rem;
  
  /* ========== Border Radius System ========== */
  --radius-none: 0;
  --radius-sm: 0.25rem;
  --radius-base: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --radius-3xl: 3rem;
  --radius-full: 9999px;
  
  /* ========== Shadow System ========== */
  --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 -1px rgba(0, 0, 0, 0.1);
  --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --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, 0.05);
  --shadow-yellow: 0 10px 40px -5px rgba(255, 242, 0, 0.3);
  --shadow-yellow-hover: 0 15px 50px -5px rgba(255, 242, 0, 0.4);
  
  /* ========== Animation System ========== */
  
  /* Timing Functions */
  --ease-linear: linear;
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  
  /* Duration Scale */
  --duration-fast: 150ms;
  --duration-base: 200ms;
  --duration-medium: 300ms;
  --duration-slow: 500ms;
  --duration-slower: 700ms;
  
  /* Common Transitions */
  --transition-all: all var(--duration-base) var(--ease-in-out);
  --transition-colors: color var(--duration-base) var(--ease-in-out), 
                       background-color var(--duration-base) var(--ease-in-out), 
                       border-color var(--duration-base) var(--ease-in-out);
  --transition-transform: transform var(--duration-base) var(--ease-out);
  --transition-opacity: opacity var(--duration-base) var(--ease-in-out);
  --transition-shadow: box-shadow var(--duration-base) var(--ease-in-out);
  
  /* ========== Layout System ========== */
  --container-max-width: 1280px;
  --container-padding: var(--space-4);
  --section-padding-y: var(--space-20);
  
  /* Breakpoints (for reference in media queries) */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
  
  /* Z-Index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Dark mode variables (optional for future implementation) */
/* Uncomment and customize when implementing dark mode
@media (prefers-color-scheme: dark) {
  :root {
    --color-primary-black: #FFFFFF;
    --color-white: #1A1A1A;
  }
}
*/