Human-Computer Interaction (HCI) in Augmented Reality (AR) and Virtual Reality (VR) environments has emerged as a critical area of research, shaping how users interact with immersive technologies. This study explores the design and development of advanced HCI frameworks in AR/VR environments, with a particular focus on adaptive interfaces and haptic feedback systems. Adaptive interfaces employ real-time data to personalize user experiences, while haptic feedback systems provide tactile sensations to bridge the gap between digital and physical interactions. The integration of these technologies enhances user engagement, immersion, and efficiency across applications such as gaming, training simulations, healthcare, and remote collaboration. This research investigates the challenges in creating intuitive, responsive systems and examines cutting-edge solutions in multimodal interactions, gesture recognition, and real-time feedback processing. By analyzing user performance and satisfaction, this study contributes to the refinement of AR/VR systems, paving the way for next-generation immersive environments.