body {
    font-family: 'Roboto', sans-serif;
    background-color: #f8f9fa;
    color: #333;
    min-height: 100vh;
}

/* Card styling */
.card {
    border: none;
    border-radius: 1rem;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
    transition: 0.3s ease-in-out;
}

.card:hover {
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.15);
}

/* Form spacing */
.form-label {
    font-weight: 500;
    margin-bottom: 6px;
}

.form-control {
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    border: 1px solid #ced4da;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    border-color: #10917b;
    box-shadow: 0 0 0 0.2rem rgba(121, 54, 245, 0.25);
}

.input-group-text {
    background-color: #fff;
    border-left: none;
    cursor: pointer;
    border-radius: 0 0.5rem 0.5rem 0;
}

.input-group .form-control {
    border-right: none;
}

.btn-primary {
    background-color: #009688;
    border-color: #009688;
    padding: 0.75rem;
    font-weight: 500;
    border-radius: 0.5rem;
    transition: background-color 0.3s ease;
}

.btn-primary:hover {
    background-color: #009688;
    border-color: #009688;
}

.text-muted a {
    color: #009688;
    text-decoration: none;
}

.text-muted a:hover {
    text-decoration: underline;
}

.invalid-feedback {
    font-size: 0.875rem;
    color: #dc3545;
}

.form-check-label {
    font-size: 0.95rem;
}

/* Responsive layout tweak */
@media (max-width: 768px) {
    .card {
        margin-top: 2rem;
    }
}