Interpolating RGB between activeTint and inactiveColor produced a visibly muddy intermediate color that read as a hard cut inside the button rather than a soft fade. Switched to a pure alpha gradient of inactiveColor itself (0.0 -> 0.85): at alpha 0 it exactly matches the header container's own tint sitting behind it, so the seam disappears entirely, and the color only ever mixes with itself. Also pushed the stop from 30% to 45% of the button's width for more breathing room before the solid fill starts.
dmc_app
Drone Mission Control - Missionsplanung und Flugsteuerung f\u00fcr Fixed-Wing-Drohnen
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