.btn-volver {
    display:inline-flex;
    align-items:center;
    gap:10px;
    padding:12px 24px;
    background: linear-gradient(135deg, #0275d8, #025bb0);
    color:white;
    border-radius:30px;
    text-decoration:none;
    font-size:16px;
    font-weight:600;
    box-shadow:0 4px 12px rgba(0,0,0,0.15);
    transition:0.3s ease;
}

.btn-volver:hover {
    background: linear-gradient(135deg, #025bb0, #014f99);
    transform: translateY(-3px);
    box-shadow:0 8px 18px rgba(0,0,0,0.25);
}

.btn-volver .icon {
    font-size:20px;
}