/* --- Grundlegende Stile --- */
.nd-esb {
    position: fixed;
    top: 30vh;
    z-index: 9999;
    display: flex;
    gap: 0;
    pointer-events: none;
    --nd-tab-bg: #8dd0f0;
    --nd-tab-color: #ffffff;
}

/* Tabs-Container */
.nd-esb__tabs {
    pointer-events: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 0 10px;
}

/* Einzelner Tab */
.nd-esb__tab {
    position: relative;
    pointer-events: auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border: 1px solid rgba(0,0,0,.08);
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,.06);
    cursor: pointer;
    transition: transform .2s ease, background .2s ease, color .2s ease, box-shadow .2s ease;
    text-decoration: none;
    background: var(--nd-tab-bg);
    color: var(--nd-tab-color) !important;
}
.nd-esb__tab .nd-esb__icon,
.nd-esb__tab .nd-esb__icon i,
.nd-esb__tab .nd-esb__icon svg {
    color: var(--nd-tab-color) !important;
    fill: var(--nd-tab-color) !important;
}
.nd-esb__tab:hover {
    transform: translateY(-1px);
    background: var(--nd-tab-bg-h, var(--nd-tab-bg));
    color: var(--nd-tab-color-h, var(--nd-tab-color)) !important;
}
.nd-esb__tab:hover .nd-esb__icon,
.nd-esb__tab:hover .nd-esb__icon i,
.nd-esb__tab:hover .nd-esb__icon svg {
    color: var(--nd-tab-color-h, var(--nd-tab-color)) !important;
    fill: var(--nd-tab-color-h, var(--nd-tab-color)) !important;
}

/* Icon-Darstellung */
.nd-esb__icon {
    font-size: 20px;
    line-height: 1;
    display: inline-flex;
}
.nd-esb__icon i {
    display: inline-block;
    line-height: 1;
}
.nd-esb__icon svg {
    width: 1em;
    height: 1em;
    fill: currentColor;
    display: block;
}
.nd-esb__icon img {
    width: 1em;
    height: 1em;
    object-fit: contain;
    display: block;
}

/* Sidebar-Positionierung */
.nd-esb--left {
    left: 0;
    right: auto;
}
.nd-esb--right {
    right: 0;
    left: auto;
}

/* Hover-Label */
.nd-esb__hover-label {
    position: absolute;
    white-space: nowrap;
    background: #111;
    color: #fff;
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    box-shadow: 0 6px 24px rgba(0,0,0,.16);
    opacity: 0;
    pointer-events: none;
    transition: opacity .18s ease, transform .18s ease;
}
.nd-esb--left .nd-esb__hover-label {
    left: calc(56px + var(--nd-hover-label-offset, 8px));
    transform: translateX(calc(-1 * var(--nd-hover-label-offset, 8px)));
}
.nd-esb--right .nd-esb__hover-label {
    right: calc(56px + var(--nd-hover-label-offset, 8px));
    transform: translateX(var(--nd-hover-label-offset, 8px));
}
.nd-esb__tab:hover .nd-esb__hover-label {
    opacity: 1;
    transform: translateX(0);
}

/* --- Responsive Sichtbarkeit --- */
@media (min-width: 1025px) {
    .nd-esb--no-desktop { display: none !important; }
}
@media (max-width: 1024px) {
    .nd-esb__hover-label { display: none; }
    .nd-esb--no-tablet { display: none !important; }
}
@media (max-width: 767px) {
    .nd-esb--no-mobile { display: none !important; }
}