body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background-color: #f0f4f8;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.contenedor-principal {
    background: #ffffff;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    max-width: 550px;
    width: 90%;
    text-align: center;
}

h1 {
    color: #1a5276;
    font-size: 1.5rem;
    margin-bottom: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

th {
    background-color: #2e86c1;
    color: white;
    padding: 15px;
    border-radius: 8px 8px 0 0;
}

td {
    padding: 10px;
    text-align: left;
    border-bottom: 1px solid #ebf5fb;
    color: #2c3e50;
    font-size: 0.95rem;
}

tr:hover {
    background-color: #f4faff;
}

.btn-regresar {
    margin-top: 20px;
    background-color: #212f3d;
    color: white;
    padding: 12px 25px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.3s;
}

.btn-regresar:hover {
    background-color: #2e86c1;
}

.imagenes-decorativas {
    margin-top: 15px;
    display: flex;
    justify-content: center;
    gap: 20px;
}