/* ===================================
   VARIABLES - Ultra Premium Design Tokens
   =================================== */

:root {
    /* Colors - Ultra Dark Premium Theme */
    --color-bg-primary: #0A0A0B;
    --color-bg-secondary: #141416;
    --color-bg-tertiary: #1C1C1F;
    --color-bg-hover: #252529;
    
    /* Text Colors */
    --color-text-primary: #FAFAFA;
    --color-text-secondary: #C7C7CC;
    --color-text-tertiary: #8E8E93;
    
    /* Brand Colors - Premium Indigo */
    --color-brand-primary: #4F46E5;
    --color-brand-secondary: #6366F1;
    --color-brand-hover: #7C3AED;
    --color-success: #10B981;
    --color-success-dark: #059669;
    --color-error: #EF4444;
    --color-error-light: #FCA5A5;
    --color-warning: #F59E0B;
    
    /* Borders */
    --border-color-primary: #1C1C1F;
    --border-color-secondary: #252529;
    --border-color-active: #4F46E5;
    
    /* Spacing */
    --spacing-xs: 6px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Shadows - Subtle Premium */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --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-brand: 0 4px 12px rgba(79, 70, 229, 0.25);
    --shadow-success: 0 4px 12px rgba(16, 185, 129, 0.2);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.6875rem;    /* 11px */
    --font-size-sm: 0.75rem;      /* 12px */
    --font-size-base: 0.875rem;   /* 14px */
    --font-size-md: 0.9375rem;    /* 15px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --letter-spacing-tight: -0.01em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.025em;
    
    /* Transitions - Smooth Premium */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slower: 400ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-modal: 2000;
    --z-toast: 3000;
    
    /* Dimensions */
    --sidebar-width: 320px;
    --toolbar-height: 64px;
    --scrollbar-width: 4px;
    --scrollbar-width-lg: 6px;
    
    /* Backdrop */
    --backdrop-blur: 20px;
    --backdrop-opacity: 0.95;
}