.sdh-contenedor-donacion {
    max-width: 450px;
    margin: 20px auto;
    padding: 25px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    background-color: #fff;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    font-family: Arial, sans-serif;
}
.sdh-botones-monto {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}
.sdh-btn-monto {
    padding: 12px;
    border: 2px solid #0073aa;
    background: #fff;
    color: #0073aa;
    cursor: pointer;
    font-weight: bold;
    border-radius: 4px;
    transition: all 0.3s;
}
.sdh-btn-monto.activo, .sdh-btn-monto:hover {
    background: #0073aa;
    color: #fff;
}
#sdh-btn-pagar {
    background: #4CAF50;
    color: white;
    padding: 14px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
}
#sdh-btn-pagar:hover {
    background: #45a049;
}
input[type="number"] {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
    border: 1px solid #ccc;
    border-radius: 4px;
}