Lighting is one of the most powerful tools in interior design, uniquely shaping how a space feels, functions, and is perceived by those who occupy it. From the brightness of a sunlit room to the subtle glow of accent fixtures, lighting not only allows us to see but also sets the emotional tone and identity of any environment. Understanding the nuances of how lighting impacts mood and ambiance is essential in creating interiors that support well-being, productivity, and aesthetic appeal.