body, html {
    margin: 0;
    padding: 0;
    font-size: 16px;
    color: #333;
    background: linear-gradient(135deg, #e0eafc, #a795d8);
    font-family: 'Open Sans', sans-serif;
    overflow-x: hidden;
}

header {
    text-align: center;
    padding: 40px 20px;
    background: rgba(52, 152, 219, 0.8);
    color: white;
    position: relative;
    overflow: hidden;
}

header h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 3rem;
    margin: 0;
    position: relative;
    z-index: 2;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 200%;
    height: 100%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 10%, transparent 10.01%);
    transform: rotate(45deg);
    animation: moveGradient 10s infinite linear;
}

@keyframes moveGradient {
    0% { transform: translateX(-50%) translateY(-50%) rotate(45deg); }
    100% { transform: translateX(0) translateY(0) rotate(45deg); }
}

.container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 20px;
    max-width: 1200px;
    margin: auto;
}

.card {
    background: rgba(255, 255, 255, 0.8);
    border-radius: 15px;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
}

.card img {
    width: 100%;
    height: auto;
    display: block;
}

.card-content {
    padding: 20px;
}

h2, h3 {
    font-family: 'Montserrat', sans-serif;
    color: #f39c12;
}

code {
    display: block;
    background: #2c3e50;
    color: #ecf0f1;
    padding: 15px;
    border-radius: 5px;
    font-size: 0.9em;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

th, td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: left;
}

th {
    background-color: #f39c12;
    color: white;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .container {
        grid-template-columns: 1fr;
    }
}