body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(to right, #ffffff, #dee5e7); 
    color: #333;
}

header {
    background: linear-gradient(to right, #b91818, #ff6f61); 
    color: white;
    text-align: center;
    padding: 2rem;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

header h1 {
    margin: 0;
    font-size: 3rem;
    font-weight: bold;
}

header p {
    margin: 0.5rem 0 0;
    font-size: 1.5rem;
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: calc(100vh - 160px); 
    padding: 0 1rem;
}

.info-section {
    text-align: center;
    margin-bottom: 2rem;
}

.info-text {
    font-size: 1.2rem;
    color: #333;
    max-width: 800px;
    margin: 0 auto;
}

.button-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
    max-width: 800px; 
}

.level-button {
    display: block;
    text-align: center;
    padding: 1.5rem 2rem;
    font-size: 1.5rem;
    color: white;
    text-decoration: none;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    font-weight: bold;
    text-transform: uppercase;
    width: 100%; 
}

.level-button:hover {
    transform: translateY(-5px);
    background-color: #333; 
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
}

.beginner {
    background: linear-gradient(to right, #4CAF50, #2C6B2F); 
}

.intermediate {
    background: linear-gradient(to right, #FF9800, #F57C00); 
}

.advanced {
    background: linear-gradient(to right, #F44336, #C62828); 
}


@media (max-width: 768px) {
    main {
        height: auto;
        padding: 2rem;
    }

    .button-section {
        flex-direction: column;
    }

    .level-button {
        font-size: 1.2rem;
        padding: 1rem;
    }
}