/**
 * Design Tokens - Phase 1.5
 * Core design variables for consistent styling
 */

:root {
    /* Spacing Scale */
    --spacing-1: 0.25rem;   /* 4px */
    --spacing-2: 0.5rem;    /* 8px */
    --spacing-3: 0.75rem;   /* 12px */
    --spacing-4: 1rem;      /* 16px */
    --spacing-5: 1.25rem;   /* 20px */
    --spacing-6: 1.5rem;    /* 24px */
    --spacing-8: 2rem;      /* 32px */
    --spacing-10: 2.5rem;   /* 40px */
    --spacing-12: 3rem;     /* 48px */
    --spacing-16: 4rem;     /* 64px */
    
    /* Border Radius */
    --radius-sm: 0.25rem;   /* 4px */
    --radius-md: 0.5rem;    /* 8px */
    --radius-lg: 0.75rem;   /* 12px */
    --radius-xl: 1rem;      /* 16px */
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    
    /* Z-index Scale */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
}

/* Light Theme Colors */
[data-theme="light"] {
    /* Surface Colors */
    --surface-primary: #ffffff;
    --surface-secondary: #f8fafc;
    --surface-tertiary: #f1f5f9;
    
    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;
    
    /* Border Colors */
    --border-default: #e2e8f0;
    --border-subtle: #f1f5f9;
    --border-strong: #cbd5e1;
    
    /* Accent Colors */
    --color-accent-primary: #0d9488;
    --color-accent-secondary: #06b6d4;
    
    /* Status Colors */
    --color-success: #10b981;
    --color-success-bg: #d1fae5;
    --color-success-text: #065f46;
    
    --color-warning: #f59e0b;
    --color-warning-bg: #fef3c7;
    --color-warning-text: #92400e;
    
    --color-error: #ef4444;
    --color-error-bg: #fee2e2;
    --color-error-text: #991b1b;
    
    --color-info: #3b82f6;
    --color-info-bg: #dbeafe;
    --color-info-text: #1e40af;
}

/* Dark Theme Colors */
[data-theme="dark"] {
    /* Surface Colors */
    --surface-primary: #0f172a;
    --surface-secondary: #1e293b;
    --surface-tertiary: #334155;
    
    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-tertiary: #64748b;
    
    /* Border Colors */
    --border-default: #334155;
    --border-subtle: #1e293b;
    --border-strong: #475569;
    
    /* Accent Colors */
    --color-accent-primary: #14b8a6;
    --color-accent-secondary: #22d3ee;
    
    /* Status Colors */
    --color-success: #34d399;
    --color-success-bg: #064e3b;
    --color-success-text: #6ee7b7;
    
    --color-warning: #fbbf24;
    --color-warning-bg: #78350f;
    --color-warning-text: #fcd34d;
    
    --color-error: #f87171;
    --color-error-bg: #7f1d1d;
    --color-error-text: #fca5a5;
    
    --color-info: #60a5fa;
    --color-info-bg: #1e3a8a;
    --color-info-text: #93c5fd;
}

/* Typography */
:root {
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Roboto Mono', 'Courier New', monospace;
    
    --text-xs: 0.75rem;     /* 12px */
    --text-sm: 0.875rem;    /* 14px */
    --text-base: 1rem;      /* 16px */
    --text-lg: 1.125rem;    /* 18px */
    --text-xl: 1.25rem;     /* 20px */
    --text-2xl: 1.5rem;     /* 24px */
    --text-3xl: 1.875rem;   /* 30px */
    --text-4xl: 2.25rem;    /* 36px */
}