/* ============================================================
   chrome.css · topbar, dossier rail, section scaffolding, footer
   ============================================================ */

/* ---------- top status bar ---------- */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--topbar-h);
  z-index: 70;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 clamp(14px, 2.5vw, 26px) 0 0;
  background: rgba(6, 10, 19, 0.82);
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
  border-bottom: 1px solid var(--line);
}
.topbar .brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0 clamp(14px, 2.5vw, 26px);
  height: 100%;
  border-right: 1px solid var(--line);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.24em;
  color: var(--txt);
  text-transform: uppercase;
  white-space: nowrap;
}
.topbar .brand .sig {
  width: 9px;
  height: 9px;
  background: var(--gold);
  box-shadow: 0 0 10px var(--gold);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
  animation: sig-pulse 2.6s ease-in-out infinite;
}
@keyframes sig-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}
.topbar .brand em { font-style: normal; color: var(--gold); }

.topbar .chips {
  display: none;
  gap: 0.35rem;
  overflow-x: auto;
  scrollbar-width: none;
  flex: 1;
  padding-block: 6px;
}
.topbar .chips::-webkit-scrollbar { display: none; }
.topbar .chips a {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--txt-dim);
  border: 1px solid var(--line);
  padding: 0.32em 0.7em;
  white-space: nowrap;
  transition: color 0.18s, border-color 0.18s, background 0.18s;
}
.topbar .chips a:hover { color: var(--gold-hi); border-color: var(--gold-deep); }
.topbar .chips a.active { color: #0d0a04; background: var(--gold); border-color: var(--gold); font-weight: 600; }

.topbar .status {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1.1rem;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--txt-dim);
  white-space: nowrap;
}
.topbar .status .ok {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  color: var(--green);
}
.topbar .status .ok::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 9px var(--green);
  animation: sig-pulse 1.9s ease-in-out infinite;
}

.progress {
  position: fixed;
  top: var(--topbar-h);
  left: 0;
  height: 2px;
  width: 0%;
  z-index: 71;
  background: linear-gradient(90deg, var(--gold), var(--cyan));
  box-shadow: 0 0 12px rgba(242, 181, 58, 0.6);
}

/* ---------- left dossier rail (wide screens) ---------- */
.rail {
  position: fixed;
  left: 0;
  top: var(--topbar-h);
  bottom: 0;
  width: var(--rail-w);
  z-index: 60;
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
  padding: 1.4rem 0;
  border-right: 1px solid var(--line);
  background: rgba(6, 10, 19, 0.55);
}
.rail a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 0 7px 18px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--txt-faint);
  transition: color 0.2s;
}
.rail a .tick {
  width: 14px;
  height: 1px;
  background: var(--txt-faint);
  transition: width 0.25s var(--ease-out), background 0.2s;
  flex: none;
}
.rail a .code { font-weight: 600; }
.rail a .name {
  position: absolute;
  left: calc(18px + 14px + 14px);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.22s, transform 0.22s;
  pointer-events: none;
  color: var(--txt-dim);
  background: rgba(8, 13, 26, 0.92);
  border: 1px solid var(--line);
  padding: 0.3em 0.7em;
  white-space: nowrap;
}
.rail a:hover, .rail a:focus-visible { color: var(--gold-hi); }
.rail a:hover .name, .rail a:focus-visible .name { opacity: 1; transform: none; }
.rail a:hover .tick { width: 24px; background: var(--gold); }
.rail a.active { color: var(--gold); }
.rail a.active .tick { width: 30px; background: var(--gold); box-shadow: 0 0 8px var(--gold); }

@media (min-width: 1180px) {
  .rail { display: flex; }
  body { padding-left: var(--rail-w); }
}
@media (max-width: 1179.5px) {
  .topbar .chips { display: flex; }
}
@media (max-width: 640px) {
  .topbar .status .utc { display: none; }
}

/* ---------- section scaffolding ---------- */
.sec {
  position: relative;
  padding: clamp(4.5rem, 9vw, 8.5rem) 0 clamp(3.5rem, 7vw, 6.5rem);
  border-top: 1px solid var(--line);
}
.sec::before {
  content: attr(data-ghost);
  position: absolute;
  top: clamp(1.6rem, 4vw, 3rem);
  right: -0.06em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(6rem, 17vw, 15rem);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(126, 156, 208, 0.09);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}
.sec > .wrap { position: relative; z-index: 1; }

.sec-head { margin-bottom: clamp(2.2rem, 5vw, 4rem); }
.sec-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem 1.4rem;
  margin-bottom: 1.1rem;
}
.sec-no {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--gold);
  border: 1px solid var(--gold-deep);
  padding: 0.4em 0.85em;
  background: rgba(242, 181, 58, 0.07);
}
.sec-class {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--txt-faint);
  text-transform: uppercase;
}
.sec-coords {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--txt-faint);
  margin-left: auto;
}
.sec-title {
  font-size: clamp(2.5rem, 6.4vw, 4.6rem);
  font-weight: 700;
  letter-spacing: 0.015em;
  color: var(--txt);
}
.sec-title .tint { color: var(--gold); }
.sec-sub {
  max-width: 60ch;
  margin: 1rem 0 0;
  color: var(--txt-dim);
  font-size: clamp(1rem, 1.4vw, 1.15rem);
}
.sec-rule {
  margin-top: 1.6rem;
  height: 1px;
  background: linear-gradient(90deg, var(--gold-deep), var(--line) 34%, transparent);
  position: relative;
}
.sec-rule::before {
  content: "";
  position: absolute;
  left: 0;
  top: -3px;
  width: 7px;
  height: 7px;
  background: var(--gold);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding: 3.4rem 0 2.6rem;
  position: relative;
  overflow: hidden;
}
.footer .endstamp {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  letter-spacing: 0.06em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(242, 181, 58, 0.4);
  margin-bottom: 1.6rem;
}
.footer .cols {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.4rem;
}
.footer h4 {
  font-size: 12px;
  letter-spacing: 0.26em;
  color: var(--gold);
  margin-bottom: 0.9rem;
}
.footer p, .footer li { font-size: 0.86rem; color: var(--txt-dim); }
.footer ul { list-style: none; margin: 0; padding: 0; }
.footer li { padding: 0.22rem 0; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.06em; }
.footer .legend i {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 0.6em;
  transform: rotate(45deg);
}
.footer .baseline {
  margin-top: 2.6rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 2rem;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--txt-faint);
  text-transform: uppercase;
}
@media (max-width: 860px) {
  .footer .cols { grid-template-columns: 1fr; }
}