task.md

Responsive Course Detail Page Implementation

Summary

Implements a comprehensive course detail page with dark/light mode support, displaying course information, syllabus, instructor details, reviews, and enrollment options with full responsiveness across all device sizes.

Changes

• Created responsive course detail page at /courses/[courseId]
• Implemented dark/light mode theming across all components
• Added course components:
  • CourseHero.tsx - Hero section with gradient background and course metadata
  • CourseProgress.tsx - Progress tracker for enrolled users
  • VideoPreview.tsx - YouTube video preview with modal player
  • CourseSyllabus.tsx - Expandable syllabus sections with lessons
  • CourseReviews.tsx - Rating distribution and student reviews
  • InstructorBio.tsx - Instructor profile with expertise and social links
  • EnrollmentCTA.tsx - Sticky pricing cards with enrollment options
• Updated Next.js config for external image domains
• Moved components to proper src/components/courses/ structure

Features

• ✅ Fully responsive layout (mobile, tablet, desktop)
• ✅ Dark/light mode support with design system colors
• ✅ Course progress tracking for enrolled users
• ✅ YouTube video preview functionality
• ✅ Expandable syllabus with lesson details
• ✅ Reviews and ratings section with interactive helpful button
• ✅ Instructor bio with social links
• ✅ Sticky enrollment CTA sidebar
• ✅ Clean typography hierarchy
• ✅ Smooth animations and transitions

Test Plan

• Page renders at /courses/1
• All images load correctly
• Video preview modal opens and displays YouTube embed
• Syllabus sections expand/collapse
• Reviews "Helpful" button increments count
• Enrollment cards display pricing options
• Responsive design works on mobile/tablet/desktop
• Dark mode colors match design system

Closes #7