/* ============================================================
   THE TIMELINE — full-screen PAGED energy chronology
   One event per page, all cards on a single side of a
   continuous spine, snap-scrolled like turning pages, with no
   visible scrollbar. Layered on the global light-theme tokens
   from styles.css. Namespaced under .tl-*.
   ============================================================ */

.tl {
  --tl-paper: var(--bg-2, #fff);
  --tl-rule: var(--line, #d6d3cb);
  --tl-rule-soft: var(--line-soft, #e6e3dc);
  --tl-ink: var(--ink, #15171c);
  --tl-ink-dim: var(--ink-dim, #5a606c);
  --tl-ink-mute: var(--ink-mute, #8b8678);
  --tl-rail-x: 132px;            /* x-position of the spine within the pager */
  color: var(--tl-ink);
  font-family: var(--sans);
  font-size: 13px;
}
.tl *, .tl *::before, .tl *::after { box-sizing: border-box; }
.tl button { font-family: inherit; cursor: pointer; border: 0; background: transparent; color: inherit; }

/* The paged view owns the viewport: kill the document scroll so
   the only thing that scrolls is the pager (which hides its bar). */
#app:has(.tl--paged) { padding-top: 14px; padding-bottom: 0; }
body:has(.tl--paged) { overflow: hidden; }

.tl--paged { display: flex; flex-direction: column; position: relative; }

/* ===================================================================
   TOOLBAR
   =================================================================== */
.tl-top {
  position: relative; z-index: 30;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  flex-wrap: wrap;
  padding: 0 0 11px;
  border-bottom: 1px solid var(--tl-rule);
}
.tl-top-left { display: inline-flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.tl-bar-brand {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--mono); font-size: 11px; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--tl-ink);
}
.tl-bar-dot {
  width: 7px; height: 7px; display: inline-block; border-radius: 50%;
  background: conic-gradient(#b3402f, #b08300, #4a7c3f, #2f7d8c, #3a5a9b, #c2622d, #b3402f);
}
.tl-top-crumb {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--tl-ink-mute);
}
.tl-top-right { display: inline-flex; align-items: center; gap: 14px; flex-wrap: wrap; }

.tl-legend-inline { display: inline-flex; gap: 9px; flex-wrap: wrap; }
.tl-legend-mini {
  display: inline-flex; align-items: center; gap: 4px;
  font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.04em;
  color: var(--tl-ink-mute); opacity: 0.45; transition: opacity 0.15s ease;
}
.tl-legend-mini.is-on { opacity: 1; color: var(--tl-ink-dim); }
.tl-legend-mini .tl-legend-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--tl-chip); }

.tl-toggle {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 7px 12px; border: 1px solid var(--tl-rule); border-radius: 7px;
  background: var(--tl-paper); transition: border-color 0.15s ease, background 0.15s ease;
}
.tl-toggle:hover { border-color: var(--tl-ink-mute); }
.tl-toggle.is-open { border-color: var(--accent, #a3601a); background: color-mix(in srgb, var(--accent, #a3601a) 7%, var(--tl-paper)); }
.tl-toggle-summary { display: inline-flex; align-items: center; gap: 8px; font-size: 11.5px; color: var(--tl-ink-dim); }
.tl-toggle-summary b { color: var(--tl-ink); font-weight: 600; }
.tl-toggle-sep { color: var(--tl-rule); }
.tl-toggle-count { font-family: var(--mono); color: var(--accent, #a3601a); font-weight: 600; }
.tl-toggle-caret { font-size: 9px; color: var(--tl-ink-mute); }

/* ---- dropdown control panel ---- */
.tl-panel {
  position: absolute; top: 100%; right: 0; left: 0; z-index: 40;
  display: grid; grid-template-columns: minmax(0,1.3fr) minmax(0,1.5fr) minmax(0,1fr);
  gap: 26px; align-items: start;
  margin-top: 10px; padding: 18px 20px;
  background: var(--tl-paper);
  border: 1px solid var(--tl-rule); border-radius: 10px;
  box-shadow: 0 16px 40px rgba(20, 23, 28, 0.14);
}
.tl-panel-block { min-width: 0; }

.tl-controls-lbl {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--tl-ink-mute); margin-bottom: 10px;
}
.tl-controls-actions { display: inline-flex; align-items: center; gap: 6px; }
.tl-controls-sep { color: var(--tl-rule); }

.tl-mini {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--tl-ink-dim);
  padding: 2px 6px; border: 1px solid var(--tl-rule); border-radius: 4px;
  transition: all 0.14s ease;
}
.tl-mini:hover { color: var(--tl-ink); border-color: var(--tl-ink-mute); }

/* chips */
.tl-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.tl-chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 10px 6px 8px; border: 1px solid var(--tl-rule); border-radius: 999px;
  font-size: 11.5px; color: var(--tl-ink-dim); background: var(--tl-paper);
  transition: all 0.14s ease; opacity: 0.55;
}
.tl-chip .tl-chip-dot {
  width: 9px; height: 9px; border-radius: 50%; background: var(--tl-chip); flex: none;
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--tl-chip) 22%, transparent);
}
.tl-chip-code { font-family: var(--mono); font-weight: 600; letter-spacing: 0.04em; }
.tl-chip-name { color: var(--tl-ink-mute); }
.tl-chip:hover { opacity: 0.85; border-color: var(--tl-ink-mute); }
.tl-chip.is-on {
  opacity: 1; color: var(--tl-ink);
  border-color: color-mix(in srgb, var(--tl-chip) 55%, var(--tl-rule));
  background: color-mix(in srgb, var(--tl-chip) 10%, var(--tl-paper));
}
.tl-chip.is-on .tl-chip-name { color: var(--tl-ink-dim); }

/* period buttons */
.tl-periods { display: flex; flex-wrap: wrap; gap: 6px; }
.tl-period {
  display: flex; flex-direction: column; gap: 1px; padding: 7px 11px; text-align: left;
  border: 1px solid var(--tl-rule); border-radius: 6px; background: var(--tl-paper);
  transition: all 0.14s ease;
}
.tl-period b { font-size: 11px; font-weight: 600; color: var(--tl-ink-dim); white-space: nowrap; }
.tl-period small { font-family: var(--mono); font-size: 9.5px; color: var(--tl-ink-mute); letter-spacing: 0.04em; }
.tl-period:hover { border-color: var(--tl-ink-mute); }
.tl-period.is-on { border-color: var(--accent, #a3601a); background: color-mix(in srgb, var(--accent, #a3601a) 8%, var(--tl-paper)); }
.tl-period.is-on b { color: var(--tl-ink); }

/* year range */
.tl-range-readout { display: flex; align-items: baseline; gap: 10px; font-family: var(--mono); margin-bottom: 8px; }
.tl-range-val { font-size: 20px; font-weight: 600; color: var(--tl-ink); }
.tl-range-arrow { color: var(--tl-ink-mute); }
.tl-range-sliders { position: relative; height: 22px; }
.tl-slider {
  -webkit-appearance: none; appearance: none; position: absolute; left: 0; right: 0; top: 8px;
  width: 100%; height: 4px; margin: 0; background: transparent; pointer-events: none;
}
.tl-slider::-webkit-slider-runnable-track { height: 4px; background: var(--tl-rule-soft); border-radius: 3px; }
.tl-slider::-moz-range-track { height: 4px; background: var(--tl-rule-soft); border-radius: 3px; }
.tl-slider--to::-webkit-slider-runnable-track { background: transparent; }
.tl-slider--to::-moz-range-track { background: transparent; }
.tl-slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; width: 15px; height: 15px; border-radius: 50%; margin-top: -5.5px;
  background: var(--tl-paper); border: 2px solid var(--accent, #a3601a); cursor: pointer;
  pointer-events: auto; box-shadow: 0 1px 3px rgba(0,0,0,0.18);
}
.tl-slider::-moz-range-thumb {
  width: 15px; height: 15px; border-radius: 50%; background: var(--tl-paper);
  border: 2px solid var(--accent, #a3601a); cursor: pointer; pointer-events: auto; box-shadow: 0 1px 3px rgba(0,0,0,0.18);
}
.tl-range-axis { display: flex; justify-content: space-between; margin-top: 6px; font-family: var(--mono); font-size: 9px; color: var(--tl-ink-mute); letter-spacing: 0.04em; }

/* ===================================================================
   THE PAGER — owns the rest of the viewport; snaps page by page;
   scrollbar hidden.
   =================================================================== */
.tl-pager {
  position: relative;
  z-index: 2;                       /* sits above the locator-map backdrop */
  overflow-y: auto; overflow-x: hidden;
  scroll-snap-type: y mandatory;
  scroll-behavior: smooth;
  scrollbar-width: none;            /* Firefox */
  -ms-overflow-style: none;         /* old Edge */
  outline: none;
  overscroll-behavior: contain;
}
.tl-pager::-webkit-scrollbar { width: 0; height: 0; display: none; }  /* WebKit */

/* continuous spine that runs through every page */
.tl-rail {
  position: absolute; top: 0; bottom: 0; left: var(--tl-rail-x);
  width: 2px; transform: translateX(-1px);
  background: repeating-linear-gradient(
    to bottom, var(--tl-rule) 0 7px, transparent 7px 13px);
  opacity: 0.7;
}

/* ---- one page = one event ---- */
.tl-page {
  position: relative;
  height: 100%;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  display: flex; align-items: flex-start;
  padding: clamp(18px, 4vh, 52px) 40px 18px 0;
}
/* intro + empty states stay vertically centred (no map behind them) */
.tl-page--intro,
.tl-page--empty { align-items: center; padding-top: 18px; }
.tl-page-inner {
  position: relative; width: 100%;
  padding-left: var(--tl-rail-x);
}

/* node on the spine, aligned with the card */
.tl-node {
  position: absolute; left: var(--tl-rail-x); top: 50%;
  width: 17px; height: 17px; margin-left: -9px; margin-top: -8px;
  border-radius: 50%; background: var(--tl-accent);
  border: 3px solid var(--bg, #f6f5f1);
  box-shadow: 0 0 0 1px var(--tl-accent), 0 0 0 6px color-mix(in srgb, var(--tl-accent) 14%, transparent);
  z-index: 3; transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.tl-node-split { position: absolute; inset: 0; border-radius: 50%; }
.tl-page.is-active .tl-node {
  transform: scale(1.25);
  box-shadow: 0 0 0 1px var(--tl-accent), 0 0 0 9px color-mix(in srgb, var(--tl-accent) 20%, transparent);
}
.tl-page.is-major .tl-node { width: 21px; height: 21px; margin-left: -11px; margin-top: -10px; }

/* connector from node to card */
.tl-connector {
  position: absolute; left: var(--tl-rail-x); top: 50%;
  width: 28px; height: 2px; transform: translateY(-1px);
  background: var(--tl-accent); opacity: 0.45; z-index: 2;
}

/* big faded year/era stamp on the left of the spine */
.tl-page-stamp {
  position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: calc(var(--tl-rail-x) - 30px);
  display: flex; flex-direction: column; align-items: flex-end; gap: 2px;
  text-align: right; pointer-events: none;
}
.tl-page-year {
  font-family: var(--mono); font-weight: 700; font-size: 30px; line-height: 0.95;
  letter-spacing: -0.02em; color: color-mix(in srgb, var(--tl-accent) 78%, var(--tl-ink));
}
.tl-page-era {
  font-family: var(--mono); font-size: 11px; font-weight: 600; letter-spacing: 0.14em;
  color: var(--tl-ink-mute);
}

/* ---- the card (single side) ---- */
.tl-card {
  width: 100%; max-width: 720px;
  margin-left: 36px;
  background: var(--tl-paper);
  border: 1px solid var(--tl-rule);
  border-left: 3px solid var(--tl-accent);
  border-radius: 10px;
  padding: 18px 20px 16px;
  box-shadow: 0 6px 20px rgba(20, 23, 28, 0.07);
  opacity: 0; transform: translateY(22px) scale(0.985);
  transition: opacity 0.45s ease, transform 0.45s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.25s ease;
}
.tl-page.is-active .tl-card { opacity: 1; transform: translateY(0) scale(1); }
.tl-page.is-major .tl-card { background: color-mix(in srgb, var(--tl-accent) 5%, var(--tl-paper)); }

.tl-card-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.tl-card-date { font-family: var(--mono); font-size: 12px; font-weight: 600; letter-spacing: 0.02em; color: var(--tl-accent); }
.tl-card-tags { display: inline-flex; gap: 4px; flex: none; }
.tl-tag {
  font-family: var(--mono); font-size: 9.5px; font-weight: 600; letter-spacing: 0.06em;
  padding: 2px 6px; border-radius: 4px; color: var(--tl-tag);
  background: color-mix(in srgb, var(--tl-tag) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--tl-tag) 30%, transparent);
}
.tl-card-title { font-size: 17px; font-weight: 600; line-height: 1.3; margin: 0 0 13px; color: var(--tl-ink); }
.tl-card-no { font-family: var(--mono); font-size: 12px; font-weight: 600; color: var(--tl-ink-mute); margin-right: 8px; }
.tl-card-flag { color: var(--tl-accent); margin-right: 6px; font-size: 13px; }

.tl-card-row {
  display: grid; grid-template-columns: 78px 1fr; gap: 12px;
  font-size: 13px; line-height: 1.5; color: var(--tl-ink-dim);
  padding: 6px 0; border-top: 1px solid var(--tl-rule-soft);
}
.tl-card-lbl { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--tl-ink-mute); padding-top: 2px; }
.tl-card-scale span:last-child { color: var(--tl-ink); font-weight: 500; }
.tl-card-foot {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  margin-top: 11px; padding-top: 9px; border-top: 1px solid var(--tl-rule-soft);
  font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.04em; color: var(--tl-ink-mute);
}
.tl-card-period { text-transform: uppercase; letter-spacing: 0.08em; }
.tl-card-source { text-align: right; font-style: italic; opacity: 0.85; }

/* ---- intro page ---- */
.tl-page--intro { padding-right: 40px; }
.tl-intro { max-width: 680px; margin-left: 36px; padding-left: var(--tl-rail-x); }
.tl-intro-eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent, #a3601a); margin-bottom: 16px;
}
.tl-intro-title { font-size: 40px; line-height: 1.06; letter-spacing: -0.02em; font-weight: 700; margin: 0 0 18px; }
.tl-intro-title em { font-style: italic; font-weight: 600; color: var(--tl-ink-dim); }
.tl-intro-lede { font-size: 15px; line-height: 1.6; color: var(--tl-ink-dim); margin: 0 0 26px; }
.tl-intro-cta {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 11px 20px; border-radius: 8px; background: var(--tl-ink); color: var(--bg, #f6f5f1);
  font-size: 13px; font-weight: 600; letter-spacing: 0.02em; transition: transform 0.15s ease, opacity 0.15s ease;
}
.tl-intro-cta:hover { transform: translateY(-1px); opacity: 0.92; }
.tl-intro-cta-arrow { font-size: 15px; }

/* ---- empty page ---- */
.tl-page--empty { justify-content: center; }
.tl-empty { display: flex; flex-direction: column; align-items: center; gap: 14px; color: var(--tl-ink-dim); text-align: center; width: 100%; }
.tl-empty-glyph { font-size: 40px; color: var(--tl-ink-mute); }

/* ===================================================================
   OVERLAYS (HUD, paging buttons, progress rail, scroll cue)
   =================================================================== */
.tl-hud {
  position: absolute; left: 0; bottom: 16px; z-index: 12;
  display: inline-flex; align-items: baseline; gap: 14px;
  opacity: 0; transition: opacity 0.3s ease; pointer-events: none;
}
.tl-hud.is-on { opacity: 1; }
.tl-hud-counter { font-family: var(--mono); font-size: 12px; color: var(--tl-ink-mute); }
.tl-hud-counter b { font-size: 22px; font-weight: 700; color: var(--tl-ink); }
.tl-hud-era { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--tl-ink-dim); }

.tl-pagenav {
  position: absolute; right: 26px; bottom: 18px; z-index: 14;
  display: flex; flex-direction: column; gap: 8px;
}
.tl-pagebtn {
  width: 38px; height: 38px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--tl-rule); background: var(--tl-paper); color: var(--tl-ink-dim);
  font-size: 12px; box-shadow: 0 2px 8px rgba(20,23,28,0.08); transition: all 0.15s ease;
}
.tl-pagebtn:hover:not(:disabled) { color: var(--tl-ink); border-color: var(--tl-ink-mute); transform: translateY(-1px); }
.tl-pagebtn:disabled { opacity: 0.32; cursor: default; }

/* vertical progress rail (mini-map of all filtered events) */
.tl-progress {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%); z-index: 12;
  display: flex; flex-direction: column; gap: 3px; align-items: center;
  max-height: 78%; overflow: hidden; padding: 4px 0;
}
.tl-progress-tick {
  width: 10px; height: 4px; border-radius: 3px; padding: 0;
  background: var(--tl-rule); transition: all 0.18s ease; flex: none;
}
.tl-progress-tick:hover { background: var(--tl-ink-mute); width: 16px; }
.tl-progress-tick.is-past { background: color-mix(in srgb, var(--tl-chip) 55%, var(--tl-rule)); }
.tl-progress-tick.is-current { width: 22px; height: 5px; background: var(--tl-chip); box-shadow: 0 0 0 2px color-mix(in srgb, var(--tl-chip) 22%, transparent); }

/* ---- autoplay control (play all events without scrolling) ---- */
.tl-playbar {
  position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%); z-index: 14;
  display: inline-flex; align-items: center; gap: 4px;
  padding: 5px 6px 5px 5px;
  background: var(--tl-paper);
  border: 1px solid var(--tl-rule); border-radius: 999px;
  box-shadow: 0 4px 16px rgba(20, 23, 28, 0.10);
}
.tl-play {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 14px 7px 12px; border-radius: 999px;
  background: var(--tl-ink); color: var(--bg, #f6f5f1);
  font-size: 12px; font-weight: 600; letter-spacing: 0.02em;
  transition: opacity 0.15s ease, transform 0.15s ease;
}
.tl-play:hover { opacity: 0.92; transform: translateY(-1px); }
.tl-playbar.is-playing .tl-play { background: var(--accent, #a3601a); }
.tl-play-tri {
  width: 0; height: 0; border-style: solid;
  border-width: 6px 0 6px 10px; border-color: transparent transparent transparent currentColor;
}
.tl-play-pause { display: inline-flex; gap: 3px; }
.tl-play-pause i { width: 3px; height: 12px; background: currentColor; display: block; border-radius: 1px; }
.tl-play-lbl { line-height: 1; }

.tl-speed {
  display: inline-flex; align-items: center; gap: 2px; padding: 0 6px 0 4px;
}
.tl-speed-lbl {
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--tl-ink-mute); margin-right: 4px;
}
.tl-speed-btn {
  font-family: var(--mono); font-size: 11px; font-weight: 600; color: var(--tl-ink-dim);
  padding: 5px 8px; border-radius: 6px; transition: all 0.14s ease;
}
.tl-speed-btn:hover { color: var(--tl-ink); background: var(--bg-3, #efece6); }
.tl-speed-btn.is-on { color: var(--tl-paper); background: var(--tl-ink-dim); }

.tl-scrollcue {
  position: absolute; left: 50%; bottom: 74px; transform: translateX(-50%); z-index: 12;
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--tl-ink-mute);
  animation: tl-bob 1.8s ease-in-out infinite;
}
.tl-scrollcue-arr { font-size: 13px; }
@keyframes tl-bob { 0%, 100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 5px); } }

/* ===================================================================
   LOCATOR MAP — shared borders-only world map. Anchored to the lower
   half of each page so it sits *below* the event card (which lives in
   the upper-left), keeping both fully visible. Re-highlights the
   country/region of the centred event; stays put while pages turn.
   =================================================================== */
.tl-locator {
  position: absolute; left: 0; right: 0; bottom: 0;
  height: 56%;
  z-index: 1; pointer-events: none;
  display: flex; flex-direction: column; align-items: center; justify-content: flex-end;
  gap: 8px; padding-bottom: 58px;          /* clear the autoplay pill */
  opacity: 1; transition: opacity 0.45s ease;
}
.tl-locator.is-intro { opacity: 0; }       /* keep the intro page clean */
.tl-locator-map {
  width: min(74vw, 1000px);
  flex: 1 1 auto; min-height: 0;
  height: auto; display: block;
  filter: drop-shadow(0 8px 24px rgba(20, 23, 28, 0.05));
}
.wm-country {
  fill: color-mix(in srgb, var(--tl-ink) 5%, var(--tl-paper));
  stroke: var(--tl-rule);
  stroke-width: 0.7px;
  vector-effect: non-scaling-stroke;
  stroke-linejoin: round;
  transition: fill 0.4s ease, stroke 0.4s ease;
}
.wm-country.is-on {
  fill: var(--tl-accent, var(--accent));
  stroke: color-mix(in srgb, var(--tl-accent, var(--accent)) 60%, var(--tl-ink));
  stroke-width: 0.9px;
}
/* When the event is global there is no single highlight: lift the
   whole landmass a touch so the map still reads as "the world". */
.tl-locator.is-global .wm-country {
  fill: color-mix(in srgb, var(--tl-ink) 8%, var(--tl-paper));
}
/* location label, sits just above the map (between card and map) */
.tl-locator-cap {
  order: -1; flex: none;
  display: flex; align-items: baseline; gap: 8px;
  text-align: center; max-width: 80vw;
}
.tl-locator-lbl {
  font-family: var(--mono); font-size: 9px; font-weight: 600;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--tl-ink-mute);
}
.tl-locator-place {
  font-family: var(--mono); font-size: 14px; font-weight: 700;
  letter-spacing: 0.01em;
  color: color-mix(in srgb, var(--tl-accent, var(--accent)) 78%, var(--tl-ink));
}
.tl-locator.is-global .tl-locator-place { color: var(--tl-ink-dim); }

/* On narrow screens stacking gets cramped; drop the map. */
@media (max-width: 760px) { .tl-locator { display: none; } }

/* ===================================================================
   RESPONSIVE
   =================================================================== */
@media (max-width: 980px) {
  .tl-panel { grid-template-columns: 1fr; gap: 16px; }
}
@media (max-width: 720px) {
  .tl { --tl-rail-x: 64px; }
  .tl-page-stamp { width: calc(var(--tl-rail-x) - 18px); }
  .tl-page-year { font-size: 18px; }
  .tl-page-era { display: none; }
  .tl-card { margin-left: 22px; }
  .tl-intro { margin-left: 22px; }
  .tl-intro-title { font-size: 28px; }
  .tl-page { padding-right: 16px; }
  .tl-progress { display: none; }
  .tl-hud { left: 0; bottom: 116px; }
  .tl-toggle-summary b:nth-of-type(2), .tl-toggle-sep { display: none; }

  /* keep the autoplay pill clear of the prev/next buttons */
  .tl-playbar { left: 12px; right: 12px; transform: none; justify-content: center; bottom: 64px; }
  .tl-play-lbl { display: none; }
  .tl-play { padding: 7px 11px; }
  .tl-speed-lbl { display: none; }
  .tl-speed-btn { padding: 5px 7px; }
}

@media (prefers-reduced-motion: reduce) {
  .tl-pager { scroll-behavior: auto; }
  .tl-card { transition: opacity 0.2s ease; transform: none; }
  .tl-page.is-active .tl-card { transform: none; }
  .tl-scrollcue { animation: none; }
}