/* ============================================================
   NEWVIB TABLE OF CONTENTS
   ============================================================ */

.nv-toc {
    background: var(--nv-cream);
    border: 1px solid var(--nv-border);
    border-left: 4px solid var(--nv-accent);
    border-radius: 0 var(--nv-radius-lg) var(--nv-radius-lg) 0;
    margin: var(--nv-space-8) 0;
    overflow: hidden;
    position: relative;
}

/* Header */
.nv-toc__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--nv-space-4) var(--nv-space-5);
    border-bottom: 1px solid var(--nv-border);
}

.nv-toc__title {
    font-family: var(--nv-font-ui);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--nv-muted);
    margin: 0;
}

.nv-toc__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--nv-radius-sm);
    color: var(--nv-muted);
    border: none;
    background: transparent;
    cursor: pointer;
    transition: background 0.18s ease, color 0.18s ease, transform 0.25s ease;
}
.nv-toc__toggle:hover { background: var(--nv-border); color: var(--nv-ink); }
.nv-toc--collapsed .nv-toc__toggle svg { transform: rotate(180deg); }

/* List */
.nv-toc__list {
    list-style: none;
    padding: var(--nv-space-4) var(--nv-space-5);
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
    /* max-height set by JS for animation */
    transition: max-height 0.35s var(--nv-ease-out);
}

/* Items */
.nv-toc__item { position: relative; }
.nv-toc__item--h3 { padding-left: var(--nv-space-6); }

.nv-toc__link {
    display: flex;
    align-items: flex-start;
    gap: var(--nv-space-3);
    padding: var(--nv-space-2) var(--nv-space-3);
    border-radius: var(--nv-radius);
    text-decoration: none;
    transition: background 0.18s ease, color 0.18s ease, padding-left 0.18s ease;
    color: var(--nv-slate);
    line-height: 1.4;
}
.nv-toc__link:hover {
    background: rgba(200,57,43,0.06);
    color: var(--nv-accent);
    padding-left: var(--nv-space-4);
}

/* Active state */
.nv-toc__link--active {
    color: var(--nv-accent);
    background: rgba(200,57,43,0.08);
    font-weight: 600;
}
.nv-toc__item--active > .nv-toc__link {
    padding-left: var(--nv-space-4);
}

/* Number */
.nv-toc__num {
    font-family: var(--nv-font-ui);
    font-size: 10px;
    font-weight: 800;
    color: var(--nv-accent);
    flex-shrink: 0;
    width: 22px;
    line-height: 1.6;
    transition: color 0.18s ease;
}

/* Sub-item dot */
.nv-toc__sub-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--nv-border);
    flex-shrink: 0;
    margin-top: 7px;
    transition: background 0.18s ease;
}
.nv-toc__link--active .nv-toc__sub-dot { background: var(--nv-accent); }

/* Link text */
.nv-toc__link-text {
    font-family: var(--nv-font-body);
    font-size: var(--nv-scale-sm);
}
.nv-toc__item--h2 .nv-toc__link-text { font-size: var(--nv-scale-base); }

/* Progress bar at bottom of TOC */
.nv-toc__progress {
    height: 3px;
    background: var(--nv-border);
}
.nv-toc__progress-bar {
    height: 100%;
    width: 0;
    background: var(--nv-accent);
    transition: width 0.1s linear;
    border-radius: 0 2px 2px 0;
}

/* ── Dark Mode ───────────────────────────────────────────── */
[data-theme="dark"] .nv-toc {
    background: #1C1C1C;
    border-color: #2C2C2C;
    border-left-color: #E8504A;
}
[data-theme="dark"] .nv-toc__header { border-bottom-color: #2C2C2C; }
[data-theme="dark"] .nv-toc__link { color: #B5B5C0; }
[data-theme="dark"] .nv-toc__link:hover {
    background: rgba(232,80,74,0.1);
    color: #E8504A;
}
[data-theme="dark"] .nv-toc__link--active {
    color: #E8504A;
    background: rgba(232,80,74,0.12);
}
[data-theme="dark"] .nv-toc__progress { background: #2C2C2C; }
[data-theme="dark"] .nv-toc__progress-bar { background: #E8504A; }
[data-theme="dark"] .nv-toc__sub-dot { background: #2C2C2C; }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 768px) {
    .nv-toc {
        margin: var(--nv-space-6) 0;
        border-radius: 0 var(--nv-radius) var(--nv-radius) 0;
    }
    .nv-toc__link-text { font-size: var(--nv-scale-sm); }
}