Motion and interaction

Motion character

Aim for fluid, slightly viscous motion: noticeable, calm, and complete. Avoid bounce, elastic easing, abrupt unmounts, decorative page choreography, or tiny effects too weak to communicate feedback.

Use exponential ease-out curves such as cubic-bezier(0.16, 1, 0.3, 1) for arrivals. Typical timing:

hover and press: 180-300 ms;
state color and glow: 600-900 ms;
content reveal: 600-850 ms;
numeric tween and progress: about 900 ms;
copy feedback: about 800 ms;
server cascade: 620-760 ms per row with 90-110 ms stagger.

Power state

Transition gray to green slowly when connecting and green to gray when disconnecting.
Animate icon color, localized light, and SVG shadow together.
Let the light expand and brighten on enable, then contract and fade on disable.
Keep the hit target and all surrounding geometry fixed.
Use a short press compression, followed by a slower release.

Changing text and numbers

Put alternate labels in fixed-size slots.
Reveal connection title, timer, and hint with opacity plus light blur, never vertical layout movement.
Do not reanimate the timer every second; animate only its initial appearance.
Tween numeric traffic values from old to new with requestAnimationFrame or an equivalent stable counter.
Animate progress width concurrently and add a brief glow that fully fades.
Never translate changing numbers if the user asked for a fluid morph; use numerical interpolation, opacity, color, blur, and light.

Refresh

Use a clean, symmetric SVG refresh icon aligned in the same flex row as its label.
Spin for at least one full cycle. If the request finishes mid-cycle, continue to the next cycle boundary before stopping.
Update data immediately when it arrives; finishing the icon cycle must not delay the data.
Manual refresh may replay meaningful data and server transitions.
Background polling should update quietly and must not repeatedly replay the server cascade.
On updated traffic, tween the number, advance the bar, and emit a visible but brief green flare.

Server cascade

On initial display, reveal rows from top to bottom with a small negative Y offset, opacity, and blur.
On manual refresh, animate an explicit exit phase first. Fade rows top to bottom, then remount and enter top to bottom.
Wait for the last exit delay and duration before starting entry.
Disable pointer interaction during exit.
Do not replay on ping updates or unrelated renders.

Subscription input

Show the public domain while retaining the full URL internally.
Disable browser autocomplete suggestions and neutralize autofill backgrounds.
Hide the blinking caret when the paste-first interaction does not need it, while preserving keyboard input and focus outline.
When an existing subscription is being edited and the field is idle, use the green underline as a five-second timeout indicator: start bright, fade to quiet, then restore display mode.
Pause the timeout once the user enters content.
Close and clear unfinished input on outside click or Escape.

First-run initialization

With no subscription, show only the centered subscription input. Hide power, proxy controls, usage, and servers.
After a valid subscription loads, keep the subscription and server list centered. Require an explicit server choice instead of silently selecting the first server.
On server choice, slide the subscription column to the right while revealing the power column on the viewport's central axis.
Preserve the chosen server on later visits, but return to first-run initialization after subscription deletion.
Deleting a subscription must stop the VPN, clear its cached/configured state, and return the UI to the centered input without leaving stale controls visible.

Copy feedback

Keep protocol buttons fixed-size and centered.
Copy the complete protocol URL while showing a shared address separately.
Overlay green Copied feedback in the same fixed box; do not append text or move the label.
Make feedback appear immediately, hold briefly, and fade fully before restoring the original label. Keep the whole cycle near 800 ms.

Reduced motion

Under prefers-reduced-motion: reduce, remove transitions and keyframe animations while preserving final state, focus, color contrast, copy wording, and all functionality.

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