/* css/variables.css */
/* Design tokens - CSS custom properties */

:root {
  /* ===== Colors ===== */
  /* Primary Palette */
  --color-primary: #6366f1;
  --color-primary-dark: #4f46e5;
  --color-primary-light: #818cf8;
  
  /* Secondary Palette */
  --color-secondary: #8b5cf6;
  --color-secondary-dark: #7c3aed;
  --color-secondary-light: #a78bfa;
  
  /* Accent Colors */
  --color-accent: #f59e0b;
  --color-accent-dark: #d97706;
  --color-accent-light: #fbbf24;
  
  /* Neutral Colors */
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-text-light: #94a3b8;
  --color-bg: #f8fafc;
  --color-bg-secondary: #e2e8f0;
  --color-surface: #ffffff;
  --color-border: #e2e8f0;
  --color-border-dark: #cbd5e1;
  
  /* Status Colors */
  --color-success: #10b981;
  --color-error: #ef4444;
  --color-warning: #f59e0b;
  --color-info: #3b82f6;
  
  /* ===== Glassmorphism ===== */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-bg-strong: rgba(255, 255, 255, 0.15);
  --glass-bg-subtle: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-border-strong: rgba(255, 255, 255, 0.3);
  --glass-blur: blur(20px);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  
  /* ===== Spacing Scale ===== */
  --space-xs: 0.25rem;    /* 4px */
  --space-sm: 0.5rem;     /* 8px */
  --space-md: 1rem;       /* 16px */
  --space-lg: 1.5rem;     /* 24px */
  --space-xl: 2rem;       /* 32px */
  --space-2xl: 3rem;      /* 48px */
  --space-3xl: 4rem;      /* 64px */
  
  /* ===== Typography ===== */
  --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 
                       'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 
                       'Droid Sans', 'Helvetica Neue', sans-serif;
  --font-family-mono: 'Fira Code', 'Consolas', 'Monaco', 'Courier New', monospace;
  
  --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: 2rem;      /* 32px */
  --font-size-4xl: 2.5rem;    /* 40px */
  --font-size-5xl: 3rem;      /* 48px */
  
  --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-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;
  --line-height-loose: 2;
  
  /* ===== Border Radius ===== */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;
  --radius-full: 9999px;
  
  /* ===== Shadows ===== */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
  
  /* ===== Transitions ===== */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* ===== 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;
  
  /* ===== Layout ===== */
  --container-max-width: 1200px;
  --container-padding: var(--space-lg);
  
  /* ===== Breakpoints (for JS use) ===== */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-text-light: #64748b;
  --color-bg: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-surface: #1e293b;
  --color-border: #334155;
  --color-border-dark: #475569;
  
  --glass-bg: rgba(30, 41, 59, 0.3);
  --glass-bg-strong: rgba(30, 41, 59, 0.5);
  --glass-bg-subtle: rgba(30, 41, 59, 0.2);
  --glass-border: rgba(148, 163, 184, 0.2);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0ms;
    --transition-base: 0ms;
    --transition-slow: 0ms;
    --transition-bounce: 0ms;
  }
}