/* Estilos generales */
body {
    padding-top: 80px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    line-height: 1.6;
}

/* Header */
.navbar {
    padding: 15px 0;
    transition: all 0.3s;
}

.navbar-brand img {
    transition: all 0.3s;
}

.nav-link {
    font-weight: 500;
    padding: 8px 15px;
    margin: 0 5px;
    position: relative;
    transition: all 0.3s;
}

.nav-link:hover {
    color: #0d6efd !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: #0d6efd;
    transition: width 0.3s;
}

.nav-link:hover::after {
    width: 100%;
}

/* Banner */
.banner {
    padding-top: 80px;
    padding-bottom: 80px;
    background: linear-gradient(135deg, #0d6efd 0%, #0b5ed7 100%);
}

/* Formulario */
.was-validated .form-control:invalid, 
.form-control.is-invalid {
    border-color: #dc3545;
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.was-validated .form-control:valid, 
.form-control.is-valid {
    border-color: #198754;
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%23198754' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

/* Footer */
footer a:hover {
    color: #adb5bd !important;
    text-decoration: underline !important;
}

/* Responsive */
@media (max-width: 768px) {
    body {
        padding-top: 70px;
    }
    
    .banner {
        padding-top: 60px;
        padding-bottom: 60px;
        text-align: center;
    }
    
    .banner img {
        margin-top: 30px;
    }
}