.jd-smart-toc,
.jd-smart-toc * {
    box-sizing: border-box;
}

.jd-smart-toc {
    width: 100%;

    background: #ffffff;
    background: var(--jd-toc-bg);

    border-style: solid;
    border-color: #e5e7eb;
    border-color: var(--jd-toc-border);

    border-width: 1px;
    border-width: var(--jd-toc-border-width);

    border-radius: 12px;
    border-radius: var(--jd-toc-radius);

    padding: 20px;
    padding: var(--jd-toc-padding);
}


/* =============================
   HEADER
   ============================= */

.jd-toc__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.jd-toc__title {
    margin: 0;

    color: #111827;
    color: var(--jd-toc-title-color);

    font-size: 18px;
    font-size: var(--jd-toc-title-size);

    font-weight: 600;
    font-weight: var(--jd-toc-title-weight);

    line-height: 1.35;
}


/* =============================
   COLLAPSE BUTTON
   ============================= */

.jd-toc__toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    flex: 0 0 auto;

    width: 34px;
    height: 34px;

    padding: 0;
    margin: 0;

    background: transparent;
    border: 0;
    border-radius: 6px;

    color: #6b7280;
    color: var(--jd-toc-toggle);

    cursor: pointer;

    transition:
        background-color 0.2s ease,
        color 0.2s ease;
}

.jd-toc__toggle:hover {
    background: rgba(0, 0, 0, 0.05);
}

.jd-toc__toggle:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 2px;
}

.jd-toc__toggle-icon {
    display: block;

    width: 8px;
    height: 8px;

    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;

    transform: rotate(45deg);

    transition: transform 0.2s ease;
}

.jd-smart-toc.is-collapsed .jd-toc__toggle-icon {
    transform: rotate(-45deg);
}


/* =============================
   BODY
   ============================= */

.jd-toc__body {
    margin-top: 14px;
}

.jd-toc__body[hidden] {
    display: none !important;
}


/* =============================
   TOC LIST
   ============================= */

.jd-toc__list {
    list-style: none;

    padding: 0;
    margin: 0;

    counter-reset: jd-toc-counter;
}

.jd-toc__item {
    list-style: none;

    padding: 0;
    margin: 0;
}

.jd-toc__item + .jd-toc__item {
    margin-top: 8px;
    margin-top: var(--jd-toc-gap);
}


/* =============================
   HEADING INDENTATION
   ============================= */

.jd-toc__item[data-level="2"] {
    padding-inline-start: 0;
}

.jd-toc__item[data-level="3"] {
    padding-inline-start: var(--jd-toc-indent);
}

.jd-toc__item[data-level="4"] {
    padding-inline-start: calc(var(--jd-toc-indent) * 2);
}

.jd-toc__item[data-level="5"] {
    padding-inline-start: calc(var(--jd-toc-indent) * 3);
}

.jd-toc__item[data-level="6"] {
    padding-inline-start: calc(var(--jd-toc-indent) * 4);
}


/* =============================
   LINKS
   ============================= */

.jd-toc__link {
    display: flex;
    align-items: flex-start;
    gap: 8px;

    width: 100%;

    padding: 4px 7px;

    border-radius: 5px;

    text-decoration: none;

    color: #4b5563;
    color: var(--jd-toc-link-color);

    font-size: 15px;
    font-size: var(--jd-toc-link-size);

    line-height: 1.5;

    transition:
        color 0.2s ease,
        background-color 0.2s ease,
        box-shadow 0.2s ease;
}

.jd-toc__link:hover {
    color: #111827;
    color: var(--jd-toc-link-hover);

    text-decoration: none;
}

.jd-toc__link:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 2px;
}


/* =============================
   ACTIVE HEADING
   ============================= */

.jd-toc__link.is-active {
    color: #2563eb;
    color: var(--jd-toc-active);

    font-weight: 600;

    box-shadow: inset 2px 0 0 currentColor;
}


/* =============================
   NUMBERING
   ============================= */

.jd-smart-toc[data-numbered="yes"] .jd-toc__item {
    counter-increment: jd-toc-counter;
}

.jd-smart-toc[data-numbered="yes"] .jd-toc__link::before {
    content: counter(jd-toc-counter) ".";

    flex: 0 0 auto;

    min-width: 1.4em;

    font-weight: 600;

    color: currentColor;
}


/* =============================
   EMPTY MESSAGE
   ============================= */

.jd-toc__empty {
    margin: 0;

    color: #6b7280;

    font-size: 14px;
    line-height: 1.5;
}


/* =============================
   REDUCED MOTION
   ============================= */

@media (prefers-reduced-motion: reduce) {
    .jd-toc__toggle,
    .jd-toc__toggle-icon,
    .jd-toc__link {
        transition: none;
    }
}