Gentler Streak Daily Mood Slider

This interaction features a custom mood slider within the Gentler Streak app. As the user drags or scrubs the slider handle to adjust their daily status, the icon inside the circular handle dynamically crossfades to reflect the selected state, transitioning from a heart icon in the center to a sleeping face emoji at the far left. The progress track seamlessly shrinks and grows in tandem with the drag gesture, offering delightful, real-time visual feedback that makes self-tracking feel intuitive and friendly.