:root{--color-bg: #0a0a0a;--color-surface: #111111;--color-accent: #3fcf74;--color-error: #fc5e4e;--color-warning: #fcb14e;--color-text-main: #f0f0f0;--color-text-muted: #a0a0a0;--color-border: #333333;--color-sidebar-bg: #050505;--color-card-bg: #0d0d0d;--color-hover-bg: #151515;--color-shadow: rgba(0, 0, 0, .5);--color-lesson-heading: #58a6ff;--color-lesson-blue: #79c0ff;--color-lesson-red: #ff7b72;--color-lesson-yellow: #d29922;--color-lesson-green: #3fb950;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 2rem;--spacing-xl: 4rem;--font-family-base: "Inter", "Outfit", system-ui, -apple-system, sans-serif;--font-family-mono: "Consolas", "Fira Code", "Courier New", monospace;--transition-fast: .25s ease;--transition-normal: .35s ease}html.light-mode{--color-bg: #f8fafc;--color-surface: #ffffff;--color-text-main: #0f172a;--color-text-muted: #334155;--color-border: #e2e8f0;--color-sidebar-bg: #f1f5f9;--color-card-bg: #ffffff;--color-hover-bg: 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