/* ============================================================
   GCWAL — About WAL · Version A (scrollable page)
   Floating left section-nav rail. Loaded only on this page
   (see EXTRA_CSS in scripts/build.py).

   Visibility model:
   - Wide screens (>1440px): full panel, labels always visible.
   - 1025–1440px: compact dot rail (labels on hover / active /
     brief reveal on page load) — a full panel would overlap
     the 1200px content column here.
   - ≤1024px: hidden (mobile readers scroll linearly).
   ============================================================ */

/* Anchor offset so jumped-to sections clear the fixed site nav */
.walv-section {
    scroll-margin-top: 90px;
}

/* ---- Rail: full panel by default (wide screens) ---- */
.walv-sidenav {
    position: fixed;
    left: 1.1rem;
    top: 50%;
    transform: translateY(-50%);
    z-index: 500;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    padding: 0.9rem 1rem;
    background: rgba(10, 10, 10, 0.88);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 184, 0, 0.22);
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}

.walv-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.22rem 0.2rem;
    text-decoration: none;
    border-radius: 8px;
}

.walv-dot {
    flex: 0 0 auto;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transition:
        background 0.2s ease,
        box-shadow 0.2s ease,
        transform 0.2s ease;
}

.walv-item:hover .walv-dot {
    background: rgba(255, 255, 255, 0.65);
}

.walv-item.active .walv-dot {
    background: var(--gold-accent);
    box-shadow: 0 0 10px rgba(255, 184, 0, 0.55);
    transform: scale(1.25);
}

.walv-label {
    font-size: 0.74rem;
    font-weight: 600;
    line-height: 1.2;
    color: var(--white-75);
    white-space: nowrap;
    transition: color 0.18s ease;
}

.walv-item:hover .walv-label {
    color: #fff;
}

.walv-item.active .walv-label {
    color: var(--gold-accent);
}

/* Section group headings */
.walv-group {
    font-size: 0.58rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--gold-accent);
    opacity: 0.8;
    margin: 0.6rem 0 0.15rem;
    white-space: nowrap;
}

/* ---- 1025–1440px: collapse to a dot rail; labels become
       floating pills shown on hover, when active, or during the
       brief intro reveal after page load ---- */
@media (max-width: 1440px) {
    .walv-sidenav {
        padding: 0;
        background: none;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        border: none;
        box-shadow: none;
        gap: 0.35rem;
    }

    .walv-label {
        background: rgba(10, 10, 10, 0.92);
        border: 1px solid rgba(255, 255, 255, 0.12);
        border-radius: 100px;
        padding: 0.32rem 0.7rem;
        opacity: 0;
        transform: translateX(-6px);
        transition:
            opacity 0.18s ease,
            transform 0.18s ease,
            color 0.18s ease;
        pointer-events: none;
    }

    .walv-sidenav:hover .walv-label,
    .walv-sidenav.walv-intro .walv-label,
    .walv-item.active .walv-label {
        opacity: 1;
        transform: none;
        pointer-events: auto;
    }

    .walv-item.active .walv-label {
        border-color: rgba(255, 184, 0, 0.4);
    }

    .walv-group {
        padding-left: 1.1rem;
        opacity: 0;
        transition: opacity 0.18s ease;
        pointer-events: none;
    }

    .walv-sidenav:hover .walv-group,
    .walv-sidenav.walv-intro .walv-group {
        opacity: 0.85;
    }
}

/* Tablet / mobile: the rail would overlap content — hide it.
   Readers scroll linearly; the nav dropdown still deep-links here. */
@media (max-width: 1024px) {
    .walv-sidenav {
        display: none;
    }
}

/* ============================================================
   TELL → TEACH → INVOLVE — one composite band instead of three
   floating cards (two of which sat two-thirds empty).
   ============================================================ */
.tti-band {
    display: grid;
    grid-template-columns: 1fr 1fr 1.35fr;
    gap: 2px;
    background: var(--border-color);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
}

.tti-item {
    background: var(--bg-card);
    padding: 2.25rem 2rem;
    transition: background 0.25s ease;
}

.tti-item:hover {
    background: var(--bg-hover);
}

.tti-item--muted {
    background: var(--bg-card);
}

.tti-item--muted .tti-verb {
    color: var(--white-50);
    /*text-decoration: line-through;*/
    text-decoration-color: rgba(196, 30, 58, 0.7);
    text-decoration-thickness: 2px;
}

.tti-item--focus {
    background: rgba(38, 32, 16, 1);
    border-top: 3px solid var(--gold-accent);
}

.tti-item--focus:hover {
    background: rgba(48, 40, 20, 1);
}

.tti-kicker {
    display: block;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--white-50);
    margin-bottom: 0.75rem;
}

.tti-item--focus .tti-kicker {
    color: var(--gold-accent);
}

.tti-verb {
    display: block;
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
    color: var(--cream);
    margin-bottom: 0.85rem;
}

.tti-item--focus .tti-verb {
    color: var(--gold-accent);
}

.tti-item p {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--white-75);
    margin: 0 0 0.5rem;
}

.tti-item p:last-child {
    margin-bottom: 0;
}

.tti-note {
    font-style: italic;
    color: var(--white-50);
    font-size: 0.875rem;
}

@media (max-width: 860px) {
    .tti-band {
        grid-template-columns: 1fr;
    }
}

/* Chapter openers ("Understanding WAL", "The Differentiation") — a thin
   centre-fading seam marks the start of each of the page's two parts. */
.walv-chapter {
    position: relative;
}

.walv-chapter::before {
    content: "";
    position: absolute;
    top: 0;
    left: 15%;
    right: 15%;
    height: 1px;
    background: linear-gradient(
        to right,
        transparent,
        rgba(255, 184, 0, 0.5) 35%,
        rgba(255, 184, 0, 0.5) 65%,
        transparent
    );
}

/* Long headings: keep to two lines via a wider header container —
   same heading size as everywhere else. */
.section-header--wide {
    max-width: 1000px;
}