body {
    background-color: #1a1a1a;
    color: #ffffff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

.navbar {
    background-color: #2d2d2d;
    padding: 1rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.navbar-content {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.navbar-logo {
    width: 40px;
    height: 40px;
}

.navbar-brand {
    color: #ffffff;
    font-size: 1.5rem;
    text-decoration: none;
    font-weight: bold;
}

.container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-control {
    width: 100%;
    padding: 0.5rem;
    font-size: 1rem;
    background-color: #333;
    border: 1px solid #444;
    color: #fff;
    border-radius: 4px;
}

.btn {
    background-color: #007bff;
    color: #ffffff;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn:hover {
    background-color: #0056b3;
}

.btn-share {
    background-color: #28a745;
}

.btn-share:hover {
    background-color: #218838;
}

.button-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
}

.qr-preview {
    margin-top: 2rem;
    text-align: center;
}

.qr-preview img {
    max-width: 300px;
    background-color: white;
    padding: 1rem;
    border-radius: 8px;
}

.alert {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 4px;
}

.alert-info {
    background-color: #17a2b8;
    color: #fff;
}

.code-block {
    background-color: #2d2d2d;
    padding: 1rem;
    border-radius: 4px;
    overflow-x: auto;
    margin: 1rem 0;
}

pre {
    margin: 0;
    color: #e9ecef;
}