.nadigi-toc {
    background-color: #ffffff;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 10px;
    overflow: hidden;
}

.nadigi-toc-header {
    position: relative;
    padding: 16px 24px;
    cursor: pointer;
    font-weight: 700;
    line-height: 1.5;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #111111;
    font-size: 14px;
    background-color: #fcfcfc;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.2s ease;
}

.nadigi-toc-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 24px;
    right: 24px;
    height: 1px;
    background-color: rgba(0, 0, 0, 0.05);
}

.nadigi-toc.nadigi-toc-collapsed .nadigi-toc-header::after {
    display: none;
}

.nadigi-toc-toggle {
    font-size: 22px;
    color: #444;
    transition: all 0.25s ease;
    line-height: 1;
}

.nadigi-toc-content {
    padding: 24px;
    background: #ffffff;
}

.nadigi-toc-content ul {
    list-style-type: none;
    padding-left: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.nadigi-toc-level-3 {
    padding-left: 16px;
}

.nadigi-toc-level-4 {
    padding-left: 32px;
}

.nadigi-toc-level-5 {
    padding-left: 48px;
}

.nadigi-toc-level-6 {
    padding-left: 64px;
}

.nadigi-toc-content ul a {
    color: #555555;
    font-weight: 500;
    font-size: 15px;
    text-decoration: none;
    transition: color 0.2s ease;
}

.nadigi-toc-content ul a:hover {
    color: #FF6200;
}

li.nadigi-toc-item.nadigi-toc-level-3 a,
li.nadigi-toc-item.nadigi-toc-level-4 a,
li.nadigi-toc-item.nadigi-toc-level-5 a,
li.nadigi-toc-item.nadigi-toc-level-6 a {
    font-weight: 400 !important;
}

@media (max-width: 767px) {
    #nadigi-toc-fixed-trigger,
    #nadigi-toc-fixed-panel {
        display: none !important;
    }
}

#nadigi-toc-fixed-trigger {
    position: fixed;
    left: 8px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 9999;
    background: #fff;
    border: none;
    border-radius: 6px;
    padding: 10px 6px;
    cursor: pointer;
    box-shadow: none;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
    width: 28px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.3s ease, visibility 0.3s ease, background 0.2s ease;
}

#nadigi-toc-fixed-trigger:hover {
    background: #f1f1f1;
    backdrop-filter: blur(3px);
}

#nadigi-toc-fixed-trigger.nadigi-toc-trigger-visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.nadigi-toc-trigger-inner {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
    width: 100%;
}

.nadigi-toc-line {
    display: block;
    height: 2px;
    background-color: #C5C5C5;
    border-radius: 2px;
    width: 100%;
    transition: background-color 0.2s ease;
}

.nadigi-toc-line.nadigi-toc-line-indent {
    width: 60%;
}

.nadigi-toc-line.nadigi-toc-line-active {
    background-color: #1F1E1C !important;
}

#nadigi-toc-fixed-panel {
    position: fixed;
    left: 52px;
    top: 50%;
    transform: translateY(-50%) translateX(-8px);
    z-index: 9998;
    background: #ffffff;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    padding: 16px;
    width: 250px;
    max-height: 60vh;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
}

#nadigi-toc-fixed-panel.nadigi-toc-panel-visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(-50%) translateX(0px);
}

#nadigi-toc-fixed-panel .nadigi-toc-panel-title {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #888;
    margin: 0 0 10px 0;
    padding-bottom: 8px;
    border-bottom: 1px solid #eee;
}

#nadigi-toc-fixed-panel ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

#nadigi-toc-fixed-panel .nadigi-toc-item a {
    display: block;
    color: #888;
    font-size: 14px;
    font-weight: 400;
    text-decoration: none;
    border-radius: 6px;
    transition: background 0.15s ease, color 0.15s ease;
    line-height: 1.4;
}

#nadigi-toc-fixed-panel .nadigi-toc-item a:hover {
    background: transparent;
    color: #111;
}

#nadigi-toc-fixed-panel .nadigi-toc-item a.nadigi-toc-active {
    background: transparent;
    color: #111;
}

#nadigi-toc-fixed-panel .nadigi-toc-level-3 {
    padding-left: 12px;
}

#nadigi-toc-fixed-panel .nadigi-toc-level-4 {
    padding-left: 24px;
}

#nadigi-toc-fixed-panel .nadigi-toc-level-5 {
    padding-left: 36px;
}

#nadigi-toc-fixed-panel .nadigi-toc-level-6 {
    padding-left: 48px;
}

#nadigi-toc-fixed-panel::-webkit-scrollbar {
    width: 4px;
}

#nadigi-toc-fixed-panel::-webkit-scrollbar-track {
    background: transparent;
}

#nadigi-toc-fixed-panel::-webkit-scrollbar-thumb {
    background: #ddd;
    border-radius: 4px;
}

#nadigi-toc-fixed-panel::-webkit-scrollbar-thumb:hover {
    background: #bbb;
}