Design a professional yet fun web app interface for a lesson planning tool. The design should emphasize simplicity and clarity while showcasing key features like AI-powered lesson plan generation, standards alignment via API, and PDF export. Include elements such as a clean dashboard, form inputs for jurisdiction, grade, subject, and budget, a hierarchical checkbox UI for selecting standards, and a preview area for the lesson plan. Use a modern design style with soft, vibrant colors, rounded cards, Tailwind-inspired UI components, and icons that represent education, collaboration, and technology. The layout should feel intuitive and inspirational, appealing to K-12 teachers, homeschool educators, and curriculum developers. See more