body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
}

.card {
    border: none;
    border-radius: 10px;
}

.card-body {
    padding: 2rem;
}

.btn-primary {
    background-color: #0d6efd;
    border: none;
    padding: 0.75rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #0b5ed7;
    transform: translateY(-1px);
}

.btn-primary .material-icons {
    vertical-align: middle;
    margin-right: 5px;
}

.btn-success {
    background-color: #198754;
    border: none;
    padding: 0.75rem;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-success:hover {
    background-color: #157347;
    transform: translateY(-1px);
}

.btn-success .material-icons {
    vertical-align: middle;
    margin-right: 5px;
}

.form-control {
    border-radius: 5px;
    padding: 0.75rem;
}

.form-control:focus {
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
    border-color: #80bdff;
}

.alert {
    border-radius: 5px;
    padding: 1rem;
}

.alert .material-icons {
    vertical-align: middle;
    margin-right: 5px;
}

.alert-success {
    background-color: #d1e7dd;
    border-color: #badbcc;
    color: #0f5132;
}

.alert-danger {
    background-color: #f8d7da;
    border-color: #f5c2c7;
    color: #842029;
}

#resultado {
    margin-top: 1.5rem;
}

.spinner-border {
    margin-right: 5px;
}

.material-icons {
    font-size: 1.2rem;
    vertical-align: middle;
}