body {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    background-image: url('../images/linea-prod.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.logo-container {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1000;
}

.logo {
    max-width: 150px;
    height: auto;
}

.card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}

.card-header {
    background: #fff;
    border-bottom: none;
    border-radius: 15px 15px 0 0 !important;
    padding: 20px;
}

.card-body {
    padding: 30px;
}

.form-control {
    border-radius: 8px;
    padding: 12px;
    border: 1px solid #ddd;
}

.form-control:focus {
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,0.15);
    border-color: #80bdff;
}

.btn-primary {
    padding: 12px;
    border-radius: 8px;
    font-weight: 600;
    background-color: green;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.alert {
    border-radius: 8px;
}