:root{--background:0 0% 100%;--foreground:222 47% 11%;--card:0 0% 100%;--card-foreground:222 47% 11%;--surface-base:214 40% 98%;--surface-elevated:0 0% 100%;--surface-muted:216 33% 97%;--surface-interactive:214 45% 96%;--surface-floating:0 0% 100%;--surface-contrast:222 47% 11%;--primary:218 88% 50%;--primary-foreground:0 0% 100%;--success:151 64% 32%;--success-foreground:0 0% 100%;--error:0 72% 51%;--error-foreground:0 0% 100%;--warning:34 94% 40%;--header-height:4rem;--topbar-height:4.5rem;--sidebar-expanded-width:16.25rem;--sidebar-collapsed-width:4.5rem;--footer-height:4.5rem;--page-container:90rem;--content-container:74rem;--reading-width:46rem;--dashboard-max-width:86rem;--spacing-xs:0.25rem;--spacing-sm:0.5rem;--spacing-md:0.75rem;--spacing-lg:1rem;--spacing-xl:1.5rem;--spacing-2xl:2rem;--spacing-3xl:2.5rem;--spacing-4xl:3rem;--radius-sm:0.5rem;--radius-md:0.75rem;--radius-lg:1rem;--radius-card:1rem;--radius-hero:1.5rem;--radius-pill:9999px;--shadow-xs:0 1px 2px rgba(15,23,42,.04);--shadow-sm:0 1px 3px rgba(15,23,42,.08),0 1px 2px rgba(15,23,42,.04);--shadow-md:0 10px 24px -16px rgba(15,23,42,.28);--shadow-card:0 18px 44px -28px rgba(15,23,42,.28);--shadow-floating:0 24px 64px -32px rgba(15,23,42,.36);--ease-standard:cubic-bezier(0.2,0,0,1);--ease-emphasized:cubic-bezier(0.16,1,0.3,1);--duration-fast:120ms;--duration-standard:180ms;--duration-slow:260ms;--z-base:0;--z-sidebar:40;--z-topbar:50;--z-dropdown:120;--z-overlay:180;--z-sidebar-mobile:190;--z-modal:200;--z-toast:240;--z-tooltip:260}.dark{--background:222 47% 7%;--foreground:210 40% 98%;--card:222 47% 9%;--card-foreground:210 40% 98%;--surface-base:222 47% 7%;--surface-elevated:222 38% 11%;--surface-muted:222 32% 14%;--surface-interactive:222 28% 17%;--surface-floating:222 38% 10%;--surface-contrast:210 40% 98%}