/* ==========================================================================
   Najibul TOC Ultimate Premium StyleSheet - Centered Edition
   ========================================================================== */

.najibul-toc-wrapper {
    margin: 40px auto !important;
    width: 100%;
    max-width: 800px !important;
    padding: 0 20px;
    box-sizing: border-box;
    display: block;
    float: none !important;
    clear: both;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.najibul-toc-empty .najibul-toc-empty-message {
    padding: 24px;
    text-align: center;
    color: var(--toc-text, #475569);
    font-size: 15px;
    background: rgba(0, 0, 0, 0.01);
    border-radius: var(--toc-radius, 12px);
}

.najibul-toc {
    background: var(--toc-bg, #ffffff);
    border: 1px solid var(--toc-border, #e2e8f0);
    border-radius: var(--toc-radius, 12px);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.03);
    transition: box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.3s ease;
}

.najibul-toc:hover {
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
    border-color: rgba(59, 130, 246, 0.2);
}

.najibul-toc-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    background: var(--toc-bg, #ffffff);
    border-bottom: 1px solid var(--toc-border, #e2e8f0);
    cursor: pointer;
    user-select: none;
    transition: background 0.2s ease;
}

.najibul-toc-header:hover {
    background: rgba(0, 0, 0, 0.005);
}

.najibul-toc-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.najibul-toc-icon {
    color: var(--toc-heading, #0f172a);
    stroke-width: 2;
    opacity: 0.9;
    flex-shrink: 0;
}

.najibul-toc-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--toc-heading, #0f172a);
    letter-spacing: -0.3px;
    margin: 0;
    padding: 0;
}

.najibul-toc-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--toc-heading, #0f172a);
    border-radius: 6px;
}

.najibul-toc-toggle svg {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: rotate(0deg);
}

/* Accordion Open/Close State Engine Engine */
.najibul-toc-wrapper.is-collapsed .najibul-toc-body {
    display: none !important;
}

.najibul-toc-wrapper.is-collapsed .najibul-toc-header {
    border-bottom-color: transparent;
}

.najibul-toc-wrapper.is-collapsed .najibul-toc-toggle svg {
    transform: rotate(180deg);
}

.najibul-toc-body {
    padding: 16px 24px 24px 24px;
    background: var(--toc-bg, #ffffff);
    box-sizing: border-box;
    display: block;
}

.najibul-toc-list {
    list-style: none !important;
    margin: 0 !important;
    padding: 0 !important;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.najibul-toc-item {
    margin: 0 !important;
    padding: 0 !important;
}

.najibul-toc-link {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--toc-text, #475569);
    text-decoration: none !important;
    transition: color 0.2s ease, transform 0.2s ease;
    font-size: 15px;
    font-weight: 500;
    line-height: 1.5;
}

.najibul-toc-marker {
    width: 6px;
    height: 6px;
    background: var(--toc-text, #475569);
    border-radius: 50%;
    margin-top: 8px;
    opacity: 0.4;
    flex-shrink: 0;
    transition: transform 0.2s ease, opacity 0.2s ease, background-color 0.2s ease;
}

.najibul-toc-text {
    flex: 1;
}

.najibul-toc-link:hover,
.najibul-toc-link.active {
    color: var(--toc-heading, #0f172a) !important;
}

.najibul-toc-link.active {
    color: #3b82f6 !important;
    font-weight: 600;
}

.najibul-toc-link:hover .najibul-toc-marker,
.najibul-toc-link.active .najibul-toc-marker {
    opacity: 1;
    transform: scale(1.3);
    background-color: #3b82f6;
}

@media (max-width: 768px) {
    .najibul-toc-wrapper { margin: 25px auto !important; padding: 0 16px; }
    .najibul-toc-header { padding: 15px 20px; }
    .najibul-toc-title { font-size: 16px; }
    .najibul-toc-body { padding: 14px 20px 20px 20px; }
    .najibul-toc-link { font-size: 14px; gap: 10px; }
}

@media (max-width: 480px) {
    .najibul-toc-wrapper { margin: 20px auto !important; padding: 0 12px; }
    .najibul-toc-header { padding: 12px 16px; }
    .najibul-toc-title { font-size: 15px; }
    .najibul-toc-body { padding: 12px 16px 16px 16px; }
    .najibul-toc-link { font-size: 13px; }
}

@media print {
    .najibul-toc-wrapper { max-width: 100% !important; margin: 20px 0 !important; }
    .najibul-toc-toggle { display: none !important; }
    .najibul-toc { border: 1px solid #cbd5e1; box-shadow: none !important; break-inside: avoid; }
    .najibul-toc-body { display: block !important; }
}