.main-header {
    /* Reemplaza 'tu-imagen.jpg' por el nombre o link de la imagen */
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('image/univer.png');
    background-size: cover;
    background-position: center;
    height: 60vh; /* Ocupa el 60% de la altura de la pantalla */
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}

.header-content h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.btn-primary {
    display: inline-block;
    padding: 10px 20px;
    background-color: #0047ab; /* Azul académico */
    color: white;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 20px;
    transition: 0.3s;
}

.btn-primary:hover {
    background-color: #003380;
}


.uni-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    padding: 40px 20px;
    background-color: #f4f7f6;
}

.uni-card {
    background: #fff;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    position: relative;
    transition: transform 0.3s ease;
    border-top: 5px solid #0047ab; /* Azul académico */
}

.uni-card:hover {
    transform: translateY(-10px);
}

.uni-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 0.7rem;
    padding: 4px 10px;
    border-radius: 20px;
    text-transform: uppercase;
    font-weight: bold;
}

.pub { background: #e3f2fd; color: #1976d2; }
.priv { background: #fff3e0; color: #f57c00; }

.uni-card h3 {
    margin-top: 10px;
    color: #2c3e50;
    font-size: 1.4rem;
}

.bio {
    font-size: 0.95rem;
    line-height: 1.6;
    color: #555;
    margin-top: 15px;
}

footer {
    background-color: #bacfe3;
}