body {
    background: linear-gradient(135deg, rgba(44, 122, 158, 0.85), rgba(26, 77, 102, 0.85));
    font-family: "Poppins", sans-serif;
    height: 100vh;
    margin: 0;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('PATTO.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    filter: blur(8px);
    z-index: -1;
}

.register-card {
    width: 100%;
    max-width: 400px;
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 2px solid #4db8e8;
    transition: transform 0.3s ease-in-out, box-shadow 0.3s;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.register-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(77, 184, 232, 0.4);
}

.form-label {
    font-weight: 500;
    color: #1a4d66;
}

.form-control {
    border: 2px solid #4db8e8;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.9);
}

.form-control:focus {
    border-color: #f5a623;
    box-shadow: 0 0 0 0.2rem rgba(245, 166, 35, 0.25);
    background: #ffffff;
}

.btn {
    border-radius: 10px;
    font-weight: 600;
}

.btn-primary {
    background: linear-gradient(135deg, #4db8e8, #2c7a9e);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #f5a623, #e89b1f);
    transform: scale(1.02);
}

.btn-outline-primary {
    border-color: #4db8e8;
    color: #2c7a9e;
}

.btn-outline-primary:hover {
    background-color: #4db8e8;
    color: #ffffff;
    border-color: #4db8e8;
}

.input-group .btn {
    border-radius: 0 10px 10px 0;
}

.form-check-input {
    width: 50px;
    height: 25px;
    cursor: pointer;
}

.form-check-input:checked {
    background-color: #4db8e8;
    border-color: #4db8e8;
}

h3, h4, h5 {
    color: #1a4d66;
}

@media (max-width: 768px) {
    .register-card {
        padding: 2rem 1.5rem;
        max-width: 360px;
    }
}