.stain{position:fixed;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(0,0,0,.03) 0%,rgba(0,0,0,0) 70%);z-index:-1;animation:float 25s infinite linear}.stain-type.selected{background-color:#edf2ff;border-color:#4c6ef5;box-shadow:0 5px 15px rgba(76,110,245,.2)}.stain-spot{position:absolute;border-radius:50%;transform:translate(-50%,-50%);transition:all .5s ease;box-shadow:0 5px 15px rgba(0,0,0,.2)}.stain-spot.coffee{background:radial-gradient(circle,#6f4e37 0%,#5d4037 70%)}.stain-spot.wine{background:radial-gradient(circle,#8b0000 0%,#600 70%)}.stain-spot.grease{background:radial-gradient(circle,#555 0%,#333 70%)}.stain-spot.ink{background:radial-gradient(circle,#1a237e 0%,#0d1b6d 70%)}.stain-spot.food{background:radial-gradient(circle,#ff9800 0%,#f57c00 70%)}.step-materials{background-color:white;padding:10px 15px;border-radius:10px;margin-top:15px;border-right:4px solid #4c6ef5}.material-item{display:flex;align-items:center;gap:10px;margin-bottom:8px}.material-item:last-child{margin-bottom:0}.material-icon{color:#4c6ef5}.tool.selected{background-color:#edf2ff;border:2px solid #4c6ef5}.cleaning-effect{position:absolute;pointer-events:none;z-index:10}.bubble{position:absolute;background-color:rgba(255,255,255,.8);border-radius:50%;animation:bubblePop .5s forwards}