.interactive-demo {
    text-align: center;
    padding: 20px;
    background: #ecf0f1;
    border-radius: 8px;
}

.control-panel {
    margin-bottom: 20px;
}

.control-panel label {
    display: inline-block;
    margin: 0 10px;
    font-weight: bold;
}

.control-panel input {
    margin-left: 5px;
    padding: 5px;
    border: 1px solid #bdc3c7;
    border-radius: 4px;
}

.demo-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    max-width: 300px;
    margin: 0 auto;
}

.demo-box {
    width: 60px;
    height: 60px;
    background: linear-gradient(45deg, #9b59b6, #8e44ad);
    border-radius: 8px;
    animation: scaleRotate 2s ease-in-out infinite;
}

.demo-box:nth-child(1) { animation-delay: var(--delay-1, 0s); }
.demo-box:nth-child(2) { animation-delay: var(--delay-2, 0.2s); }
.demo-box:nth-child(3) { animation-delay: var(--delay-3, 0.4s); }
.demo-box:nth-child(4) { animation-delay: var(--delay-4, 0.6s); }

@keyframes scaleRotate {
    0%, 100% { 
        transform: scale(1) rotate(0deg); 
    }
    50% { 
        transform: scale(1.2) rotate(180deg); 
    }
}