/* ==================== CSS CUSTOM PROPERTIES ==================== */
/* Design Tokens for VoiceGuard UI */

:root {
    /* ==================== COLORS ==================== */
    
    /* Primary Palette (Indigo) */
    --color-primary-50:  #EEF2FF;
    --color-primary-100: #E0E7FF;
    --color-primary-200: #C7D2FE;
    --color-primary-300: #A5B4FC;
    --color-primary-400: #818CF8;
    --color-primary-500: #6366F1;
    --color-primary-600: #4F46E5;
    --color-primary-700: #4338CA;
    --color-primary-800: #3730A3;
    --color-primary-900: #312E81;
    
    /* Success (Human - Green) */
    --color-success-50:  #ECFDF5;
    --color-success-100: #D1FAE5;
    --color-success-200: #A7F3D0;
    --color-success-300: #6EE7B7;
    --color-success-400: #34D399;
    --color-success-500: #10B981;
    --color-success-600: #059669;
    --color-success-700: #047857;
    
    /* Danger (AI - Red) */
    --color-danger-50:  #FEF2F2;
    --color-danger-100: #FEE2E2;
    --color-danger-200: #FECACA;
    --color-danger-300: #FCA5A5;
    --color-danger-400: #F87171;
    --color-danger-500: #EF4444;
    --color-danger-600: #DC2626;
    --color-danger-700: #B91C1C;
    
    /* Warning (Yellow) */
    --color-warning-500: #F59E0B;
    --color-warning-600: #D97706;
    
    /* Neutrals (Slate) */
    --color-neutral-50:  #F8FAFC;
    --color-neutral-100: #F1F5F9;
    --color-neutral-200: #E2E8F0;
    --color-neutral-300: #CBD5E1;
    --color-neutral-400: #94A3B8;
    --color-neutral-500: #64748B;
    --color-neutral-600: #475569;
    --color-neutral-700: #334155;
    --color-neutral-800: #1E293B;
    --color-neutral-900: #0F172A;
    --color-neutral-950: #020617;
    
    /* Semantic Colors */
    --color-bg:          var(--color-neutral-950);
    --color-bg-elevated: var(--color-neutral-900);
    --color-bg-card:     var(--color-neutral-800);
    --color-text:        var(--color-neutral-50);
    --color-text-muted:  var(--color-neutral-400);
    --color-text-subtle: var(--color-neutral-500);
    --color-border:      var(--color-neutral-700);
    --color-border-hover: var(--color-neutral-600);
    
    /* ==================== TYPOGRAPHY ==================== */
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'Fira Code', 'Consolas', 'Monaco', monospace;
    
    /* Font Sizes */
    --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 */
    --text-5xl:  3rem;       /* 48px */
    
    /* Font Weights */
    --font-normal:   400;
    --font-medium:   500;
    --font-semibold: 600;
    --font-bold:     700;
    
    /* Line Heights */
    --leading-tight:   1.25;
    --leading-snug:    1.375;
    --leading-normal:  1.5;
    --leading-relaxed: 1.625;
    
    /* ==================== SPACING ==================== */
    
    --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 */
    
    /* ==================== BORDERS ==================== */
    
    --radius-sm:   0.25rem;  /* 4px */
    --radius-md:   0.375rem; /* 6px */
    --radius-lg:   0.5rem;   /* 8px */
    --radius-xl:   0.75rem;  /* 12px */
    --radius-2xl:  1rem;     /* 16px */
    --radius-3xl:  1.5rem;   /* 24px */
    --radius-full: 9999px;
    
    --border-width: 1px;
    --border-width-2: 2px;
    
    /* ==================== SHADOWS ==================== */
    
    --shadow-xs:  0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-sm:  0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md:  0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg:  0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl:  0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    
    --shadow-glow-primary: 0 0 20px rgba(99, 102, 241, 0.4);
    --shadow-glow-success: 0 0 20px rgba(16, 185, 129, 0.4);
    --shadow-glow-danger:  0 0 20px rgba(239, 68, 68, 0.4);
    
    /* ==================== TRANSITIONS ==================== */
    
    --duration-instant: 50ms;
    --duration-fast:    150ms;
    --duration-normal:  200ms;
    --duration-slow:    300ms;
    --duration-slower:  500ms;
    
    --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);
    
    /* ==================== Z-INDEX ==================== */
    
    --z-base:     0;
    --z-dropdown: 100;
    --z-sticky:   200;
    --z-modal:    300;
    --z-toast:    400;
    --z-tooltip:  500;
    
    /* ==================== BREAKPOINTS (for reference) ==================== */
    /* Use in media queries: @media (min-width: 640px) */
    /* --breakpoint-sm:  640px;  */
    /* --breakpoint-md:  768px;  */
    /* --breakpoint-lg:  1024px; */
    /* --breakpoint-xl:  1280px; */
}