body {
    background: linear-gradient(135deg, #ffe6eb, #fff1f4);
}

.card {
    border-radius: 20px;
    padding: 40px 30px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 50px rgba(0,0,0,0.15);
}

h2 {
    font-weight: 700;
    margin-bottom: 5px;
    font-family: 'Poppins', sans-serif;
}

.back-link {
    position: absolute;
    top: 15px;
    left: 20px;
    font-weight: 500;
    color: #ef1b48;
    text-decoration: none;
    transition: color 0.3s ease;
}

.back-link:hover {
    color: #d3173f;
}

.subtitle {
    text-align: center;
    margin-bottom: 30px;
    color: #777;
    font-style: italic;
    font-weight: 500;

}

.form-control {
    border-radius: 50px;
    padding: 12px 15px;
    border: 1px solid #ddd;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: #ef1b48;
    box-shadow: 0 0 10px rgba(239,27,72,0.2);
}

.form-label {
    margin-left: 10px; 
    font-weight: 500;
}

.btn-signup {
    background-color: #ef1b48;
    color: #fff;
    font-weight: 650;
    border-radius: 50px;
    padding: 12px;
    margin-top: 15px;
    font-size: 16px;
    transition: background 0.3s ease, transform 0.2s ease;
}

.btn-signup:hover {
    background-color: #d3173f;
    color: #fff;
    transform: translateY(-2px);
}

.text-center a {
    font-weight: 500;
    color: #ef1b48;
    transition: color 0.3s ease;
}

.text-center a:hover {
    color: #d3173f;
    text-decoration: underline;
}

/* Responsive adjustments */
@media (max-width: 576px) {
    .row > .col {
        margin-bottom: 15px;
    }
}