body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f6f9;
}

.card {
    border-radius: 15px;
}

.form-control {
    border-radius: 8px;
    padding: 10px 15px;
    border: 1px solid #ddd;
}

.form-control:focus {
    box-shadow: 0 0 0 3px rgba(0,0,0,0.1);
    border-color: #000;
}

.btn-dark {
    background-color: #2c3e50;
    border: none;
    padding: 12px;
}

.btn-dark:hover {
    background-color: #1a252f;
}