body {
    font-family: Arial, sans-serif;
    background: #f4f6f8;
    margin: 0;
    padding: 40px;
    color: #1f2937;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

h1 {
    color: #111827;
}

h2 {
    color: #1f2937;
}

a, button {
    display: inline-block;
    margin-top: 10px;
    margin-right: 12px;
    padding: 10px 16px;
    background: #2563eb;
    color: white;
    text-decoration: none;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

button:hover, a:hover {
    background: #1d4ed8;
}

input, textarea {
    width: 100%;
    max-width: 500px;
    padding: 10px;
    margin-top: 8px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
}

textarea {
    height: 100px;
}

.question-card, .stat-card {
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    padding: 16px;
    border-radius: 8px;
    margin: 12px 0;
}

.error {
    color: red;
}

.disabled-button {
    background-color: #cccccc;
    color: #666666;
    cursor: not-allowed;
}