*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --deep: #020c18;
  --abyss: #010810;
  --mid: #063a5c;
  --bio: #00c8e0;
  --amber: #c8922a;
  --muted: #7ab3c8;
  --surf: #e8f4f8;
  --tw: 110px;
  --nw: 52px;
}

/* Body defaults set in custom.scss */
body {
  overflow-x: hidden;
  line-height: 1.7;
}

.justify {
  text-align: justify !important
}

/* Quarto chrome — see css/custom.scss */

::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--abyss); }
::-webkit-scrollbar-thumb { background: var(--mid); border-radius: 2px; }

/* ── Hero ── */
#hero {
  position: relative; width: 100%; height: 100vh; min-height: 560px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  overflow: hidden;
  background: radial-gradient(ellipse at 50% 65%, #063a5c 0%, #020c18 55%, #010810 100%);

}
#hc { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.hcontent { position: relative; z-index: 2; text-align: center; padding: 2rem; max-width: 780px; }
.eyebrow {
  font-size: 0.7rem; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--bio); margin-bottom: 1.2rem; animation: fu 1s 0.3s both;
}
.htitle {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.6rem, 7vw, 5.5rem);
  font-weight: 700; line-height: 1.1; margin-bottom: 1.2rem;
  animation: fu 1s 0.5s both; color: var(--surf);
}
.htitle em { font-style: italic; color: var(--bio); }
.hsub {
  font-size: clamp(0.9rem, 2vw, 1.15rem); color: var(--muted);
  max-width: 520px; margin: 0 auto 1rem; animation: fu 1s 0.7s both;
}
.hauthors {
  font-size: 0.82rem; color: var(--amber); letter-spacing: 0.12em;
  text-transform: uppercase; animation: fu 1s 0.9s both; margin-bottom: 1.25rem;
}
.hcontributors {
  font-size: 0.6rem; color: var(--amber); letter-spacing: 0.12em;
  text-transform: uppercase; animation: fu 1s 0.9s both; margin-bottom: 1rem;
}
/* scue: fixed to viewport bottom, centred on full viewport (no sidebar during hero) */
.scue {
  position: fixed; bottom: 2rem;
  left: 0; right: 0;
  display: flex; flex-direction: column; align-items: center; gap: 0.4rem;
  color: var(--muted); font-size: 0.7rem; letter-spacing: 0.15em;
  text-transform: uppercase; cursor: pointer; animation: fu 1s 1.2s both;
  z-index: 50;
  transition: opacity 0.4s;
}
.scue.hidden { opacity: 0; pointer-events: none; }
.sarr {
  width: 20px; height: 20px;
  border-right: 1.5px solid var(--bio); border-bottom: 1.5px solid var(--bio);
  transform: rotate(45deg); animation: bd 2s infinite;
}

/* ── Layout ── */
#tlc { position: relative; display: flex; align-items: flex-start; }

#gsb {
  position: sticky; top: 0; width: var(--tw); height: 100vh;
  flex-shrink: 0; z-index: 100;
  background: rgba(1, 8, 16, 0.96);
  border-right: 1px solid rgba(0, 200, 224, 0.1);
  display: flex; flex-direction: column; overflow: hidden;
}
.sbh {
  padding: 0.6rem 0.4rem; text-align: center;
  border-bottom: 1px solid rgba(0, 200, 224, 0.1);
  flex-shrink: 0; font-size: 0.55rem; letter-spacing: 0.15em;
  text-transform: uppercase; color: var(--muted);
}
#gtd {
  flex: 1; overflow: hidden; padding: 0.4rem 0.25rem;
  display: flex; flex-direction: column; gap: 0;
}
/* Base unit style */
.gu {
  border-radius: 2px; padding: 0.16rem 0.3rem;
  font-size: 0.56rem; font-weight: 600; letter-spacing: 0.04em;
  text-transform: uppercase; opacity: 0.38;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  transition: opacity 0.3s, background 0.3s, transform 0.3s;
  cursor: pointer;
}
/* Active highlight — glow + slight scale */
.gu.act {
  opacity: 1 !important;
  transform: scaleX(1.02);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.15);
}
.gu:hover { opacity: 0.75; }

/* Eon — full-width, bold, coloured left border, small gap above */
.gu.eon {
  font-size: 0.5rem; letter-spacing: 0.1em; font-weight: 700;
  margin-top: 4px; padding-left: 0.3rem;
  border-left: 3px solid currentColor;
}

/* Era — indented 8px, medium weight */
.gu.era {
  font-size: 0.52rem; font-weight: 600;
  padding-left: 0.65rem;
  border-left: 2px solid currentColor;
  opacity: 0.35;
}

/* Period — indented 16px, lighter */
.gu.per {
  font-size: 0.54rem; font-weight: 500;
  padding-left: 1.0rem;
  border-left: 1px solid rgba(255,255,255,0.12);
  opacity: 0.32;
}

/* Stages — hidden by default, opened via JS when parent period is .act */
.gu.stg {
  font-size: 0.5rem; padding-left: 1rem; font-weight: 400;
  max-height: 0; overflow: hidden; opacity: 0;
  padding-top: 0; padding-bottom: 0; margin: 0;
  transition: max-height 0.25s ease, opacity 0.25s ease, padding 0.25s ease;
}
.gu.stg.open {
  max-height: 1.4rem; opacity: 0.65;
  padding-top: 0.12rem; padding-bottom: 0.12rem;
}
.gu.stg.open.act { opacity: 1; }

.sbf {
  padding: 0.4rem; text-align: center;
  border-top: 1px solid rgba(0,200,224,0.1); flex-shrink: 0;
}
.sbf .mv {
  font-family: 'Playfair Display', serif; font-size: 0.95rem;
  color: var(--bio); display: block;
}
.sbf .ml {
  font-size: 0.5rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--muted);
}

#evcol { flex: 1; min-width: 0; padding: 4rem 2rem 8rem; max-width: 660px; margin: 0 auto; }

#evnav {
  position: sticky; top: 50vh; transform: translateY(-50%);
  width: var(--nw); flex-shrink: 0;
  display: flex; flex-direction: column; align-items: center; gap: 0.8rem;
  padding: 1rem 0.4rem; align-self: flex-start; margin-top: 4rem;
}
.nb {
  width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid rgba(0,200,224,0.35);
  background: rgba(2,12,24,0.85); color: var(--bio);
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: all 0.3s; backdrop-filter: blur(4px);
}
.nb:hover { background: rgba(0,200,224,0.12); border-color: var(--bio); transform: scale(1.1); }
.nb:disabled { opacity: 0.2; cursor: not-allowed; transform: none; }
.nb svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 2; }
.nct { font-size: 0.6rem; color: var(--muted); text-align: center; }

/* ── Eon dividers ── */
.ediv { display: flex; align-items: center; gap: 0.75rem; margin: 1.5rem 0 3rem; }
.edl { flex: 1; height: 1px; opacity: 0.4; }
.edlb {
  font-family: 'Playfair Display', serif; font-size: 0.8rem;
  font-style: italic; letter-spacing: 0.08em; white-space: nowrap;
  padding: 0.2rem 0.65rem; border-radius: 2rem;
  border: 1px solid currentColor; opacity: 0.6;
}

/* ── Event cards ── */
.ec {
  position: relative; margin-bottom: 4.5rem;
  opacity: 0; transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.ec.vis { opacity: 1; transform: translateY(0); }
.eam { display: flex; align-items: center; gap: 0.65rem; margin-bottom: 0.85rem; }
.ead {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--bio); flex-shrink: 0; animation: pg 3s infinite;
}
.eat { font-size: 0.65rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--amber); }
.eal { flex: 1; height: 1px; background: linear-gradient(to right, rgba(0,200,224,0.3), transparent); }

.eiw {
  position: relative; width: 100%;
  border-radius: 5px; overflow: visible;
  cursor: pointer; margin-bottom: 0.65rem;
}
.eiw img {
  width: 100%; height: auto; display: block;
  border-radius: 5px;
  border: 1px solid rgba(0,200,224,0.15);
  transition: border-color 0.3s, filter 0.3s;
}
.eiw:hover img { border-color: rgba(0,200,224,0.5); filter: brightness(0.65); }

.epop {
  position: absolute; top: 0; left: calc(100% + 0.9rem);
  width: clamp(240px, 32vw, 400px);
  background: rgba(4,18,34,0.97);
  border: 1px solid rgba(0,200,224,0.25);
  border-radius: 6px; padding: 1.25rem;
  z-index: 200; pointer-events: none;
  opacity: 0; transform: translateX(-6px);
  transition: opacity 0.3s, transform 0.3s;
  backdrop-filter: blur(12px);
}
.eiw:hover .epop { opacity: 1; transform: translateX(0); pointer-events: auto; }
.epop h3 { font-family: 'Playfair Display', serif; font-size: 1rem; color: var(--bio); margin-bottom: 0.6rem; line-height: 1.3; }
.epop p { font-size: 0.85rem; color: var(--muted); line-height: 1.6; margin-bottom: 0.45rem; }
.epop .etag { font-size: 0.7rem; color: var(--amber); font-style: normal; }
.ecap { font-size: 0.78rem; color: var(--muted); line-height: 1.5; padding-left: 0.45rem; border-left: 2px solid rgba(0,200,224,0.18); }
.econn { width: 1px; height: 2.5rem; background: linear-gradient(to bottom, rgba(0,200,224,0.18), transparent); margin: 0 auto -2rem; }

/* ── Floating time indicator ── */
/* #ftw is centred on the page content area (between sidebar and nav) */
#ftw {
  position: fixed; bottom: 1.75rem;
  left: calc(var(--tw) + (100vw - var(--tw) - var(--nw)) / 2);
  transform: translateX(-50%);
  z-index: 300; display: flex; flex-direction: column; align-items: center;
  pointer-events: none; transition: opacity 0.3s;
}
#ftw.hid { opacity: 0; }
#tdl.hid { opacity: 0; }
#tdl { transition: opacity 0.3s; }
.tpill {
  background: rgba(2,12,24,0.93);
  border: 1px solid rgba(0,200,224,0.38);
  border-radius: 2rem; padding: 0.45rem 1.1rem;
  display: flex; align-items: baseline; gap: 0.35rem;
  backdrop-filter: blur(10px);
}
.tv { font-family: 'Playfair Display', serif; font-size: 1.3rem; color: var(--bio); letter-spacing: -0.02em; }
.tu { font-size: 0.65rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.tpn { font-size: 0.6rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--amber); margin-top: 0.2rem; text-align: center; }

/* Dashed line — JS sets --tdl-bottom via alignDashedLine() on init + resize */
#tdl {
  position: fixed;
  bottom: var(--tdl-bottom, calc(1.75rem + 19px));
  left: var(--tw); right: var(--nw);
  height: 1px; pointer-events: none; z-index: 299;
  display: flex; align-items: center;
}
.dlc { width: 6px; height: 6px; border-radius: 50%; background: var(--bio); flex-shrink: 0; }
.dli { flex: 1; border-top: 1.5px dashed rgba(0,200,224,0.3); }

/* ── Animations ── */
@keyframes fu {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes bd {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50%       { transform: rotate(45deg) translateY(5px); }
}
@keyframes pg {
  0%, 100% { box-shadow: 0 0 6px var(--bio); }
  50%       { box-shadow: 0 0 14px var(--bio), 0 0 28px rgba(0,200,224,0.3); }
}

/* ── Responsive ── */
@media (max-width: 760px) {
  :root { --tw: 60px; --nw: 42px; }
  .gu { font-size: 0.48rem; padding: 0.12rem 0.2rem; }
  .epop { left: 0; top: calc(100% + 0.4rem); width: 100%; transform: translateY(-6px); }
  .eiw:hover .epop { transform: translateY(0); }
  #evcol { padding: 2rem 0.75rem 8rem; }
}
@media (max-width: 440px) {
  :root { --tw: 0px; --nw: 0px; }
  #gsb, #evnav { display: none; }
}