* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #2c3e50;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    padding: 20px;
}

.container {
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    padding: 30px;
    width: 100%;
    max-width: 600px;
    text-align: center;
}

h1 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #2c3e50;
}

textarea {
    width: 100%;
    height: 200px;
    padding: 15px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 14px;
    color: #333;
    background-color: #f9f9f9;
    resize: vertical;
    margin-bottom: 20px;
    transition: border-color 0.3s ease;
}

textarea:focus {
    border-color: #3498db;
    outline: none;
}

button {
    background-color: #2c3e50;
    color: #fff;
    border: none;
    padding: 12px 24px;
    font-size: 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

button:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
}

button:active {
    transform: translateY(0);
}

@media (max-width: 480px) {
    h1 {
        font-size: 20px;
    }

    textarea {
        height: 150px;
    }

    button {
        width: 100%;
        padding: 15px;
    }
}