🔆➡️🔅➡️⚫️

#dim #light level #day to night #light to dark #intensity change #brightness

🔉🎚️🔊

#volume control #audio adjust #sound level #intensity change #amplitude modulation #level slider

📈⏱️📉

#interval training #HIIT #exercise cycle #work rest ratio #fitness timer #workout phase #intensity change

⚪️░▒▓█⚫️

#shade gradient #color transition #smooth shading #fade effect #visual gradient #intensity change #unicode gradient