.animation-demo {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    padding: 25px;
    margin: 25px 0;
    color: white;
    position: relative;
    overflow: hidden;
}
.animation-box {
    width: 100px;
    height: 100px;
    background: #4caf50;
    border-radius: 8px;
    margin: 20px auto;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    cursor: pointer;
}
.animation-controls {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
    margin: 20px 0;
}
.control-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
}
.control-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}
.code-block {
    margin: 25px 0;
    position: relative;
}
.note-box {
    background: #e7f3ff;
    border-left: 4px solid #2196f3;
    padding: 15px;
    margin: 20px 0;
    border-radius: 4px;
}
.warning-box {
    background: #fff3cd;
    border-left: 4px solid #ffc107;
    padding: 15px;
    margin: 20px 0;
    border-radius: 4px;
}
.success-box {
    background: #d4edda;
    border-left: 4px solid #28a745;
    padding: 15px;
    margin: 20px 0;
    border-radius: 4px;
}
.timeline {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 30px 0;
    position: relative;
}
.timeline-point {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #6c757d;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    z-index: 2;
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
}
.timeline-point.active {
    background: #4caf50;
    transform: scale(1.2);
}
.timeline-line {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 3px;
    background: #dee2e6;
    z-index: 1;
}
.demo-container {
    background: white;
    border: 2px solid #dee2e6;
    border-radius: 8px;
    padding: 20px;
    margin: 20px 0;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.animation-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    margin: 20px 0;
}
.preview-item {
    width: 150px;
    height: 150px;
    border-radius: 8px;
    background: #3498db;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    cursor: pointer;
}