.sig_panel_lateral {
    display: none;
    position: fixed;
    top: 46px;
    bottom: 0;
    right: 0;
    left: auto;
    width: min(850px, 96vw);
    max-width: 100vw;
    background: #fff;
    box-shadow: 0 0 18px rgba(0, 0, 0, .22);
    z-index: 100;
}

.sig_panel_lateral.sig_panel_open {
    display: block;
}

.sig_panel_derecho {
    right: 0;
    left: auto;
}

.sig_panel_izquierdo {
    left: 0;
    right: auto;
}

.sig_panel_lateral > div,
.sig_panel_contenido {
    height: 100%;
}

.sig_panel_contenido {
    display: flex;
    flex-direction: column;
}

.sig_panel_cabecera {
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    border-bottom: 1px solid #e7ecf1;
}

.sig_panel_cabecera h4 {
    margin: 0;
    line-height: 1.5;
}

.sig_panel_cuerpo {
    padding: 20px;
    flex: 1;
    min-height: 0;
    overflow-y: auto;
}

.sig_panel_fondo {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .35);
    z-index: 99;
}

body.sig_panel_activo {
    overflow: hidden;
}