/* Copyright (c) 2025-2026 Jericho Crosby (Chalwk) */

.toc-block {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-left: 4px solid var(--secondary-color);
    border-radius: 8px;
    margin: 24px 0 32px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    overflow: hidden;
}

.toc-header {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 16px 24px;
    margin: 0;
    background: transparent;
    border: none;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    color: var(--primary-color);
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
}

.toc-header:hover {
    background: rgba(45, 107, 201, 0.05);
}

.toc-header:focus-visible {
    outline: 2px solid var(--secondary-color);
    outline-offset: -2px;
}

.toc-header-icon {
    color: var(--secondary-color);
    font-size: 0.95rem;
    flex-shrink: 0;
}

.toc-header-label {
    flex: 1;
    min-width: 0;
}

.toc-chevron {
    color: var(--secondary-color);
    font-size: 0.8rem;
    flex-shrink: 0;
    transition: transform 0.25s ease;
}

.toc-block:not(.toc-collapsed) .toc-chevron {
    transform: rotate(180deg);
}

.toc-list {
    list-style: none;
    margin: 0;
    padding: 4px 24px 18px;
    border-top: 1px solid #e2e8f0;
}

.toc-list[hidden] {
    display: none;
}

.toc-item {
    margin: 0;
    padding: 0;
}

.toc-item a {
    display: block;
    padding: 6px 0;
    color: var(--dark-color);
    text-decoration: none;
    font-size: 0.93rem;
    line-height: 1.4;
    border-left: 2px solid transparent;
    transition: var(--transition);
}

.toc-item a:hover {
    color: var(--secondary-color);
    border-left-color: var(--secondary-color);
    padding-left: 8px;
}

.toc-level-2>a {
    font-weight: 600;
    color: var(--primary-color);
}

.toc-level-3>a {
    padding-left: 18px;
    font-size: 0.88rem;
    color: var(--gray-color);
}

.toc-level-3>a:hover {
    color: var(--secondary-color);
    padding-left: 26px;
}

.toc-level-4>a,
.toc-level-5>a,
.toc-level-6>a {
    padding-left: 34px;
    font-size: 0.84rem;
    color: var(--gray-color);
}

.toc-empty {
    color: var(--gray-color);
    font-style: italic;
    font-size: 0.9rem;
    padding: 4px 0;
}

@media (max-width: 768px) {
    .toc-block {
        margin: 20px 0 26px;
    }

    .toc-header {
        padding: 14px 18px;
        font-size: 0.95rem;
    }

    .toc-list {
        padding: 4px 18px 14px;
    }

    .toc-item a {
        font-size: 0.88rem;
        padding: 5px 0;
    }
}