.interactive-container{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border-radius:15px;padding:30px;margin:40px 0;box-shadow:0 10px 30px rgba(0,0,0,.2)}.interactive-container h3{color:#fff;font-size:1.6em;margin-bottom:20px;text-align:center}.interactive-container p{color:#fff;font-size:1em;margin-bottom:15px}.food-item.selected{border-color:#27ae60;background-color:#d5f4e6}.challenge-day.completed{background-color:#d5f4e6;border-left-color:#27ae60}