body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #0078D4, #1E88E5);
    color: #333;
    overflow-x: hidden;
}
.container {
    display: flex;
    flex-wrap: wrap;
    min-height: 100vh;
}
.left, .right {
    flex: 1;
    padding: 20px;
    box-sizing: border-box;
    transition: transform 0.5s ease;
}
.left {
    background: radial-gradient(circle, #0078D4, transparent), linear-gradient(to bottom, #0078D4, #1E88E5);
    color: white;
    position: relative;
}
.right {
    background-color: #f9fafb;
    color: #333;
}
@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }
    .left, .right {
        flex: none;
    }
}
h1, h2, h3 {
    font-family: 'Roboto', sans-serif;
    font-weight: bold;
    margin-bottom: 10px;
}
p {
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 20px;
}
button {
    font-family: inherit;
    font-size: 14px;
    border-radius: 5px;
    padding: 10px 20px;
    background-color: #FF9800;
    color: white;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}
button:hover {
    background-color: #e65100;
    transform: scale(1.1);
}
pre {
    background: #f4f4f4;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}
code {
    font-family: 'Courier New', Courier, monospace;
    color: #d63384;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}
th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}
th {
    background-color: #f2f2f2;
}
.left::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center center,
                url('https://images.gptkong.com/demo/sample2.png') no-repeat right bottom;
    background-size: contain;
    opacity: 0.2;
    z-index: -1;
}
.right img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
}
.data-item {
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 10px;
    padding: 15px;
    margin: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}
.data-item:hover {
    transform: translateY(-5px);
}
.alert {
    background: #ffeb3b;
    color: #333;
    padding: 10px;
    border-radius: 5px;
    margin: 10px 0;
}
@keyframes aurora-move {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}
.animation-bg {
    background: linear-gradient(270deg, #0078D4, #1E88E5, #0078D4);
    background-size: 600% 600%;
    animation: aurora-move 15s ease infinite;
}