.mdbook-track {
    --mdbook-track-complete: #84ad24;
    --mdbook-track-complete-bg: rgb(132 173 36 / 25%);
    margin: 1.5rem 0 2rem;
}

.mdbook-track--inline {
    margin: 1rem 0;
}

.mdbook-track__header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.mdbook-track__count {
    font-size: 0.9em;
    opacity: 0.8;
}

.mdbook-track__items {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 0.65rem;
}

.mdbook-track--inline .mdbook-track__items {
    gap: 0;
}

.mdbook-track__item {
    margin: 0;
    border: 1px solid var(--table-border-color, #4b5568);
    border-radius: 0.55rem;
    background: var(--quote-bg, transparent);
    overflow: hidden;
    cursor: pointer;
    transition:
        background-color 120ms ease,
        border-color 120ms ease,
        box-shadow 120ms ease;
}

.mdbook-track__item label {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    min-height: 2.9rem;
    padding: 0.65rem 0.75rem;
    cursor: pointer;
    font-size: 0.8em;
    font-weight: 600;
    line-height: 1.3;
    user-select: none;
}

/* Keep the real checkbox accessible, but draw the control ourselves so the
   appearance is consistent across mdBook themes and browsers. */
.mdbook-track__item input[type="checkbox"] {
    position: absolute;
    inline-size: 1px;
    block-size: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}

.mdbook-track__checkbox {
    flex: 0 0 auto;
    width: 1.7em;
    height: 1.7em;
    box-sizing: border-box;
    display: inline-grid;
    place-items: center;
    border: 2px solid currentColor;
    border-radius: 0.28rem;
    background: var(--bg, transparent);
    opacity: 0.9;
    cursor: pointer;
    line-height: 1;
}

.mdbook-track__item input[type="checkbox"]:focus-visible + .mdbook-track__checkbox {
    outline: 2px solid var(--links, currentColor);
    outline-offset: 3px;
}

.mdbook-track__item input[type="checkbox"]:checked + .mdbook-track__checkbox {
    background: #f8fafc;
    border-color: #f8fafc;
    color: #28301f;
    opacity: 1;
}

.mdbook-track__item input[type="checkbox"]:checked + .mdbook-track__checkbox::after {
    content: "✓";
    display: block;
    font-size: 1.55em;
    font-weight: 800;
    line-height: 1;
    text-align: center;
}

.mdbook-track__label {
    flex: 1 1 auto;
}

.mdbook-track__item--complete,
.mdbook-track__item:has(input[type="checkbox"]:checked) {
    border-color: var(--mdbook-track-complete, #84ad24);
    border-width: 2px;
    background: var(--mdbook-track-complete-bg, rgb(132 173 36 / 25%));
}

@supports (background: color-mix(in srgb, black, white)) {
    .mdbook-track__item {
        border-color: color-mix(in srgb, var(--fg, #fff) 16%, var(--bg, #1f2430));
        background: color-mix(in srgb, var(--fg, #fff) 5%, var(--bg, #1f2430));
    }

    .mdbook-track__item:hover {
        border-color: color-mix(in srgb, var(--fg, #fff) 28%, var(--bg, #1f2430));
        background: color-mix(in srgb, var(--fg, #fff) 8%, var(--bg, #1f2430));
    }

    .mdbook-track__item--complete,
    .mdbook-track__item--complete:hover,
    .mdbook-track__item:has(input[type="checkbox"]:checked),
    .mdbook-track__item:has(input[type="checkbox"]:checked):hover {
        border-color: var(--mdbook-track-complete, #84ad24);
        background: var(--mdbook-track-complete-bg, rgb(132 173 36 / 25%));
    }
}

/* -------------------------------------------------------------------------
   Workbook overview
   ------------------------------------------------------------------------- */

.mdbook-track-overview {
    --mdbook-track-overview-accent: #84ad24;
    --mdbook-track-overview-accent-soft: rgb(132 173 36 / 20%);
    --mdbook-track-overview-muted: color-mix(in srgb, var(--fg, #fff) 58%, transparent);
    --mdbook-track-overview-row-inset: 0.35rem;
    margin: 1.5rem 0 2rem;
    padding: 1rem 1.1rem 1.15rem;
    border: 1px solid var(--table-border-color, #4b5568);
    border-radius: 0.4rem;
    background: var(--quote-bg, transparent);
}

.mdbook-track-overview__header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.55rem;
}

.mdbook-track-overview__header strong {
    font-size: 1em;
}

.mdbook-track-overview__total,
.mdbook-track-overview__count,
.mdbook-track-overview__section-count {
    font-size: 0.82em;
    opacity: 0.78;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.mdbook-track-overview__progress,
.mdbook-track-overview__section-progress {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: 999px;
    background: rgb(127 127 127 / 18%);
}

.mdbook-track-overview__progress {
    height: 0.48rem;
    margin: 0 0 1.15rem;
}

.mdbook-track-overview__section-progress {
    height: 0.3rem;
    margin: 0.35rem 0 0.55rem;
}

.mdbook-track-overview__progress-fill,
.mdbook-track-overview__section-progress-fill {
    height: 100%;
    width: var(--mdbook-track-progress, 0%);
    border-radius: inherit;
    background: var(--mdbook-track-overview-accent);
    transition: width 180ms ease;
}

.mdbook-track-overview__section + .mdbook-track-overview__section {
    margin-top: 1.2rem;
}

.mdbook-track-overview__section-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    padding-right: var(--mdbook-track-overview-row-inset);
}

.mdbook-track-overview__section-title {
    margin: 0;
    font-size: 0.92em;
    font-weight: 700;
    letter-spacing: 0.01em;
}

.mdbook-track-overview__list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.mdbook-track-overview__entry {
    margin: 0;
    padding: 0;
}

.mdbook-track-overview__row {
    display: grid;
    grid-template-columns: 0.85rem minmax(0, 1fr) auto;
    align-items: center;
    gap: 0.65rem;
    min-height: 2rem;
    margin: 0;
    padding: 0.38rem var(--mdbook-track-overview-row-inset);
    border-bottom: 1px solid rgb(127 127 127 / 18%);
    border-radius: 0.25rem;
    color: inherit;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 120ms ease, outline-color 120ms ease;
}

.mdbook-track-overview__row:hover {
    background: rgb(127 127 127 / 7%);
    color: inherit;
    text-decoration: none;
}

.mdbook-track-overview__row:focus-visible {
    outline: 2px solid var(--mdbook-track-overview-accent);
    outline-offset: -2px;
    background: rgb(132 173 36 / 8%);
}

.mdbook-track-overview__status {
    position: relative;
    width: 0.68rem;
    height: 0.68rem;
    box-sizing: border-box;
    border: 1.5px solid rgb(127 127 127 / 55%);
    border-radius: 50%;
    background: transparent;
}

.mdbook-track-overview__row--progress .mdbook-track-overview__status {
    border-color: var(--mdbook-track-overview-accent);
    background: conic-gradient(
        var(--mdbook-track-overview-accent) var(--mdbook-track-row-progress, 0%),
        transparent 0
    );
}

.mdbook-track-overview__row--complete .mdbook-track-overview__status {
    border-color: var(--mdbook-track-overview-accent);
    background: var(--mdbook-track-overview-accent);
}

.mdbook-track-overview__title {
    min-width: 0;
    color: inherit;
    font-size: 0.9em;
    line-height: 1.35;
}

.mdbook-track-overview__row--complete .mdbook-track-overview__title {
    font-weight: 600;
}

.mdbook-track-overview__row--complete .mdbook-track-overview__count {
    color: var(--mdbook-track-overview-accent);
    opacity: 1;
}

@media (max-width: 520px) {
    .mdbook-track__header,
    .mdbook-track-overview__header {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.25rem;
    }

    .mdbook-track-overview {
        --mdbook-track-overview-row-inset: 0.2rem;
        padding-inline: 0.8rem;
    }

    .mdbook-track-overview__row {
        grid-template-columns: 0.75rem minmax(0, 1fr) auto;
        gap: 0.5rem;
        padding-inline: var(--mdbook-track-overview-row-inset);
    }
}