I have the idea but no coding skills – how do I build this animated UI?

I’m working on a Google extension and I wanted to ask for help because I have a pretty clear idea of what I want to build, but I don’t know how to actually implement it in code. I’m using HTML and learning in a very basic way, mostly by copying and adapting things from videos or websites.

The idea is to create a minimalist interface with smooth animations that react to sound, based on three main phases:

· Phase 1: Initial White Mode (Standby)
The system is idle, waiting for activation.
The microphone is shown in pure white, with no animation or color.
The background is dark, with very soft blurred color orbs (red, yellow, and green).
The text displayed is: “On hold…”.
There is no interaction, it’s just a waiting state.

· Phase 2: Progressive Coloring with Waves (Loading)
The system starts preparing to listen.
The microphone begins to fill with Google colors (blue, red, yellow, and green), from the bottom to the top.
The animation has a soft wave effect moving horizontally inside the icon.
The filling is progressive, indicating that it’s loading or getting ready.
The text changes to: “Ready to talk!”.

· Phase 3: Final – Dynamic Rotation (Active / Processing)
The system enters the active state.
The microphone transforms into a single multicolor circular shape (one continuous image).
This shape rotates slowly in a clockwise direction, with a smooth and constant movement.

I also want it to react to sound:

When there is voice, the circle slightly expands

When the voice decreases, it contracts

The effect should feel like a “pulse”, synced with the audio intensity

All transitions should be smooth (ease-in-out), no abrupt movement

In the center, there is a fixed white microphone.
The background should be blurred, slightly showing what’s behind it.
The text in this phase is: “Processing…”.

The problem is that I don’t know how to actually build this technically (animations, audio detection, transitions between phases, etc.). I’m pretty lost in that part, so any help, guidance, or even where to start would really help me.

Thanks!