body {
    background: #f4f6f9;
    font-family: 'Segoe UI', sans-serif;
}

/* Navbar moderna */
.navbar {
    border-radius: 0;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

/* Tarjetas */
.card-modern {
    background: #ffffff;
    padding: 25px;
    border-radius: 14px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: 0.3s ease;
}

.card-modern:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.08);
}

/* Botones modernos */
.btn {
    border-radius: 8px;
    font-weight: 600;
    transition: 0.3s;
}

.btn-primary {
    background-color: #004085;
    border: none;
}

.btn-primary:hover {
    background-color: #002752;
}

/* Inputs */
.form-control {
    border-radius: 8px;
    box-shadow: none;
    border: 1px solid #ddd;
}

.form-control:focus {
    border-color: #004085;
    box-shadow: 0 0 0 2px rgba(0,64,133,0.1);
}

/* Animación suave */
.fade-in {
    animation: fadeIn 0.6s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
.action-btn.text-muted{
background:#e9ecef;
color:#999;
cursor:not-allowed;
}