/* Design Tokens - Dark Theme with Blue/Purple Accents */

:root {
  /* Color System */
  
  /* Dark Background Palette */
  --color-bg-primary: #0a0a0b;
  --color-bg-secondary: #151518;
  --color-bg-tertiary: #1e1e23;
  --color-bg-elevated: #242429;
  --color-bg-overlay: rgba(15, 15, 17, 0.95);
  
  /* Blue/Purple Accent System */
  --color-accent-primary: #4F46E5;    /* Indigo */
  --color-accent-secondary: #7C3AED;  /* Violet */
  --color-accent-tertiary: #06B6D4;   /* Cyan */
  --color-accent-light: #8B5CF6;      /* Purple light */
  --color-accent-muted: #6366F1;      /* Indigo muted */
  
  /* Gradient Combinations */
  --gradient-primary: linear-gradient(135deg, var(--color-accent-primary) 0%, var(--color-accent-secondary) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--color-accent-tertiary) 0%, var(--color-accent-primary) 100%);
  --gradient-subtle: linear-gradient(135deg, var(--color-accent-primary) 0%, var(--color-accent-light) 100%);
  
  /* Text Colors */
  --color-text-primary: #ffffff;
  --color-text-secondary: #a3a3a3;
  --color-text-tertiary: #737373;
  --color-text-muted: #525252;
  --color-text-accent: var(--color-accent-tertiary);
  
  /* Border Colors */
  --color-border-primary: #2a2a2f;
  --color-border-secondary: #404047;
  --color-border-accent: var(--color-accent-primary);
  --color-border-muted: #1a1a1e;
  
  /* Status Colors */
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;
  --color-info: var(--color-accent-tertiary);
  
  /* Typography System */
  
  /* Font Families */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-family-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;
  
  /* Font Weights - Modern & Thin Focus */
  --font-weight-thin: 100;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  
  /* Font Sizes - Fluid Scale */
  --font-size-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --font-size-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --font-size-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --font-size-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
  --font-size-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --font-size-2xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --font-size-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 3rem);
  --font-size-4xl: clamp(2.25rem, 1.8rem + 2.25vw, 4rem);
  --font-size-5xl: clamp(3rem, 2.4rem + 3vw, 6rem);
  
  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Letter Spacing */
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;
  --letter-spacing-wider: 0.05em;
  
  /* Spacing System - 8px Base */
  --space-0: 0;
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  --space-32: 8rem;     /* 128px */
  
  /* Border Radius */
  --radius-none: 0;
  --radius-sm: 0.125rem;
  --radius-base: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows - Dark Theme Optimized */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.5), 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  --shadow-accent: 0 0 0 1px var(--color-accent-primary), 0 4px 6px -1px rgba(79, 70, 229, 0.3);
  
  /* Animation Properties */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 350ms;
  --duration-slower: 500ms;
  
  --ease-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Z-index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

/* Global Resets & Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-light);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Typography Base Classes */
.text-thin { font-weight: var(--font-weight-thin); }
.text-light { font-weight: var(--font-weight-light); }
.text-normal { font-weight: var(--font-weight-normal); }
.text-medium { font-weight: var(--font-weight-medium); }
.text-semibold { font-weight: var(--font-weight-semibold); }

.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.text-3xl { font-size: var(--font-size-3xl); }
.text-4xl { font-size: var(--font-size-4xl); }
.text-5xl { font-size: var(--font-size-5xl); }

.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-tertiary { color: var(--color-text-tertiary); }
.text-muted { color: var(--color-text-muted); }
.text-accent { color: var(--color-text-accent); }

.leading-tight { line-height: var(--line-height-tight); }
.leading-normal { line-height: var(--line-height-normal); }
.leading-relaxed { line-height: var(--line-height-relaxed); }

.tracking-tight { letter-spacing: var(--letter-spacing-tight); }
.tracking-normal { letter-spacing: var(--letter-spacing-normal); }
.tracking-wide { letter-spacing: var(--letter-spacing-wide); }
.tracking-wider { letter-spacing: var(--letter-spacing-wider); }