:root {
    --primary-color: #0D47A1;
    --secondary-color: #6A1B9A;
    --accent-color: #2979FF;
    --background-color: #F5F5F5;
    --text-color: #333;
    --hover-color: #0056b3;
}

body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-color);
    line-height: 1.6;
    letter-spacing: 0.5px;
}

header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 10px 20px;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 1.5rem;
    font-weight: bold;
}

main {
    margin-top: 80px;
    padding: 20px;
    max-width: 1440px;
    margin: 0 auto;
    background: var(--background-color);
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease-in-out;
}

.card:hover {
    transform: translateY(-5px);
}

.card img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
}

button {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease-in-out;
}

button:hover {
    background-color: var(--hover-color);
    transform: scale(1.05);
}

pre {
    background: #f4f4f4;
    padding: 15px;
    border-radius: 5px;
    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: var(--primary-color);
    color: white;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 1.2rem;
    }

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

@media (max-width: 480px) {
    main {
        padding: 10px;
    }

    button {
        width: 100%;
    }
}