/* Reset basic margins and set up a clean font */
body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #f4f7f6;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

/* Center container */
.container {
    text-align: center;
    background: white;
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    max-width: 400px;
}

h1 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

p {
    line-height: 1.6;
    color: #666;
}

/* Button styling */
button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s ease;
    margin-top: 1rem;
}

button:hover {
    background-color: #2980b9;
}

/* JavaScript toggle class */
.hidden {
    display: none;
}

#message {
    margin-top: 1.5rem;
    color: #27ae60;
    font-weight: bold;
}