/* ------------------------------------------------------------------
   Northern Tales — timeline
   Vertical trunk with branching horizontal arms.
   ------------------------------------------------------------------ */

.timeline { max-width: calc(var(--measure) + 12rem); margin: 0 auto; }

.timeline-head { text-align: center; margin-bottom: 3rem; }
.timeline-title { font-size: clamp(2.1rem, 1.5rem + 2.2vw, 3.1rem); color: var(--accent); margin: 0 0 0.5rem; }
.timeline-lead  { font-size: 1.1rem; color: var(--fg-muted); max-width: var(--measure); margin: 0 auto; }

/* --- trunk & branch shared node styles --- */
.tl-section-title {
    font-size: 1.5rem;
    color: var(--accent);
    text-align: center;
    margin: 2.5rem 0 1.5rem;
    font-family: var(--font-display);
}

.tl-trunk { position: relative; padding-left: 2.8rem; }
.tl-trunk::before {
    content: "";
    position: absolute;
    left: 0.7rem;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--bronze);
    border-radius: 2px;
}

.tl-node {
    position: relative;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
}

.tl-node::before {
    content: "";
    position: absolute;
    left: -2.1rem;
    top: 0.45rem;
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: var(--bronze);
    border: 2px solid var(--bg);
    box-shadow: 0 0 0 2px var(--bronze);
    z-index: 1;
}

.tl-node-head {
    display: flex;
    align-items: baseline;
    gap: 0.6rem;
    cursor: pointer;
    user-select: none;
}
.tl-node-head:hover .tl-node-title { color: var(--link-hover); }

.tl-node-year {
    font-family: var(--font-sans);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--bronze);
    white-space: nowrap;
    min-width: 7rem;
}

.tl-node-title {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--fg);
    margin: 0;
    transition: color 0.15s;
}

.tl-node-short {
    font-size: 0.95rem;
    color: var(--fg-muted);
    margin: 0.2rem 0 0;
    line-height: 1.5;
}

.tl-node-detail {
    display: none;
    margin: 0.8rem 0 0;
    padding: 1rem 1.2rem;
    background: var(--bg-raised);
    border: 1px solid var(--rule);
    border-left: 3px solid var(--bronze);
    border-radius: 3px;
    box-shadow: var(--shadow-soft);
}
.tl-node-detail[aria-hidden="false"] { display: block; }

.tl-node-detail p {
    font-size: 1rem;
    line-height: 1.65;
    margin: 0 0 0.8rem;
}
.tl-node-detail p:last-child { margin-bottom: 0; }

.tl-node-links {
    margin-top: 0.8rem;
    padding-top: 0.6rem;
    border-top: 1px solid var(--rule);
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.2rem;
}
.tl-node-links a {
    font-size: 0.88rem;
    font-family: var(--font-sans);
    font-weight: 600;
    letter-spacing: 0.02em;
}

/* --- branch point --- */
.tl-branch-point {
    text-align: center;
    margin: 2.5rem 0;
    padding: 1.5rem;
    background: var(--bg-raised);
    border: 1px solid var(--rule);
    border-radius: 3px;
    box-shadow: var(--shadow-card);
}
.tl-branch-point-year {
    font-family: var(--font-sans);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--bronze);
}
.tl-branch-point-title {
    font-size: 1.5rem;
    color: var(--accent);
    margin: 0.3rem 0;
}
.tl-branch-point-short {
    font-size: 1rem;
    color: var(--fg-muted);
    max-width: 50ch;
    margin: 0 auto;
}

/* --- branches container --- */
.tl-branches {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin: 2rem 0;
}

@media (min-width: 52rem) {
    .tl-branches { grid-template-columns: 1fr 1fr; }
}

/* --- individual branch --- */
.tl-branch {
    padding-left: 2.2rem;
    position: relative;
}
.tl-branch::before {
    content: "";
    position: absolute;
    left: 0.5rem;
    top: 0;
    bottom: 0;
    width: 3px;
    border-radius: 2px;
}

.tl-branch-header {
    margin-bottom: 1.2rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--rule);
}
.tl-branch-label {
    font-size: 1.3rem;
    font-weight: 600;
    margin: 0;
}
.tl-branch-direction {
    font-size: 0.88rem;
    font-family: var(--font-sans);
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin: 0.15rem 0 0;
}

.tl-branch .tl-node { margin-bottom: 1.2rem; }

.tl-branch .tl-node::before {
    left: -1.7rem;
    width: 9px;
    height: 9px;
}

/* branch colors */
.tl-branch[data-branch="sweden"]::before { background: var(--bronze); }
.tl-branch[data-branch="sweden"] .tl-node::before { background: var(--bronze); box-shadow: 0 0 0 2px var(--bronze); }
.tl-branch[data-branch="sweden"] .tl-branch-direction { color: var(--bronze); }
.tl-branch[data-branch="sweden"] .tl-node-detail { border-left-color: var(--bronze); }

.tl-branch[data-branch="norway"]::before { background: var(--moss); }
.tl-branch[data-branch="norway"] .tl-node::before { background: var(--moss); box-shadow: 0 0 0 2px var(--moss); }
.tl-branch[data-branch="norway"] .tl-branch-direction { color: var(--moss); }
.tl-branch[data-branch="norway"] .tl-node-detail { border-left-color: var(--moss); }

.tl-branch[data-branch="denmark"]::before { background: var(--bloodstone); }
.tl-branch[data-branch="denmark"] .tl-node::before { background: var(--bloodstone); box-shadow: 0 0 0 2px var(--bloodstone); }
.tl-branch[data-branch="denmark"] .tl-branch-direction { color: var(--bloodstone); }
.tl-branch[data-branch="denmark"] .tl-node-detail { border-left-color: var(--bloodstone); }

.tl-branch[data-branch="iceland"]::before { background: var(--mist); }
.tl-branch[data-branch="iceland"] .tl-node::before { background: var(--mist); box-shadow: 0 0 0 2px var(--mist); }
.tl-branch[data-branch="iceland"] .tl-branch-direction { color: var(--mist); }
.tl-branch[data-branch="iceland"] .tl-node-detail { border-left-color: var(--mist); }

/* --- epilogue --- */
.tl-epilogue {
    text-align: center;
    margin: 2.5rem 0 1rem;
    padding: 1.5rem;
    background: var(--bg-raised);
    border: 1px solid var(--rule);
    border-radius: 3px;
}
.tl-epilogue-year { font-family: var(--font-sans); font-size: 0.82rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--bronze); }
.tl-epilogue-title { font-size: 1.3rem; color: var(--accent); margin: 0.3rem 0; }
.tl-epilogue-short { font-size: 1rem; color: var(--fg-muted); max-width: 50ch; margin: 0 auto; }

/* --- responsive --- */
@media (max-width: 36rem) {
    .tl-node-head { flex-direction: column; gap: 0.1rem; }
    .tl-node-year { min-width: auto; }
}