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When the user taps the call button, the interface transitions into a full-screen calling state with a vibrant green background. The recipient's avatar is centered, surrounded by a continuous, soft pulsing ring that scales up and fades out to indicate an active outgoing call. Once connected, the layout smoothly morphs: the recipient's avatar slides upward to make room, the caller's avatar slides up from the bottom, and call controls fade in at the bottom of the screen, creating a seamless and playful connection experience.
