/* ============================================================
   ZONA ESCURA — V1 · OBSERVATÓRIO
   Elementos 1 (hero + feed de sinais) e 2 (o que monitoramos).
   Sala de controle noturna: azul-noite, sinais em ciano,
   alerta em âmbar. (extraído de index.html:202-666)
   ============================================================ */

.zone-dark {
  --bg-0: #071523;
  --bg-1: #0d2b47;
  --bg-1-rgb: 13, 43, 71;
  --filme-fundo: #000; /* moldura do vídeo: preto de letterbox, não tinta da paleta */
  --cyan: #38b6d9;
  --cyan-bright: #6fd3ef;
  --cyan-line: rgba(var(--accent-rgb), 0.26);
  --cyan-faint: rgba(var(--accent-rgb), 0.09);
  --cyan-ghost: rgba(var(--accent-rgb), 0.05);
  --amber: #d99a2b;
  --amber-soft: #f3d9a8;
  --amber-line: rgba(var(--amber-rgb), 0.35);
  --ink: #e9f3f9;
  --ink-dim: #a7bccb;
  --ink-faint: #64809a;
  --display: 'Archivo', sans-serif;
  --body: 'Sora', sans-serif;
  --mono: ui-monospace, 'Cascadia Mono', 'SF Mono', Menlo, Consolas, 'Liberation Mono', monospace;
  --pad: clamp(1.25rem, 4vw, 3rem);
  --max: 1240px;
  --nav-h: 64px;
  --dwell: 4.5s;

  position: relative;
  isolation: isolate;
  font-family: var(--body);
  font-weight: 300;
  color: var(--ink);
  background: radial-gradient(130% 90% at 50% -10%, var(--bg-1) 0%, var(--bg-0) 58%), var(--bg-0);
  line-height: 1.7;
}

.zone-dark a {
  color: var(--cyan-bright);
  text-decoration: none;
}

.zone-dark a:focus-visible,
.zone-dark button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Céu estrelado (2 camadas, twinkle dessincronizado) */
.zone-dark .sky {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.zone-dark .sky::before,
.zone-dark .sky::after {
  content: "";
  position: absolute;
  inset: -10%;
  background-repeat: repeat;
}

.zone-dark .sky::before {
  background-image:
    radial-gradient(1px 1px at 22px 38px, rgba(var(--text-light-rgb), 0.95), transparent 60%),
    radial-gradient(1px 1px at 180px 120px, rgba(var(--accent-light-rgb), 0.8), transparent 60%),
    radial-gradient(1.5px 1.5px at 340px 60px, rgba(var(--text-light-rgb), 0.7), transparent 60%),
    radial-gradient(1px 1px at 90px 300px, rgba(var(--text-light-rgb), 0.55), transparent 60%),
    radial-gradient(1px 1px at 420px 240px, rgba(var(--accent-light-rgb), 0.6), transparent 60%),
    radial-gradient(1.5px 1.5px at 260px 390px, rgba(var(--text-light-rgb), 0.8), transparent 60%);
  background-size: 480px 480px;
  opacity: 0.42;
  animation: twinkle 9s ease-in-out infinite alternate;
}

.zone-dark .sky::after {
  background-image:
    radial-gradient(1px 1px at 60px 80px, rgba(var(--text-light-rgb), 0.7), transparent 60%),
    radial-gradient(1px 1px at 300px 210px, rgba(var(--text-light-rgb), 0.5), transparent 60%),
    radial-gradient(1.5px 1.5px at 520px 140px, rgba(var(--accent-light-rgb), 0.65), transparent 60%),
    radial-gradient(1px 1px at 150px 460px, rgba(var(--text-light-rgb), 0.6), transparent 60%),
    radial-gradient(1px 1px at 640px 380px, rgba(var(--text-light-rgb), 0.45), transparent 60%),
    radial-gradient(1.5px 1.5px at 430px 540px, rgba(var(--accent-light-rgb), 0.55), transparent 60%);
  background-size: 760px 760px;
  opacity: 0.3;
  animation: twinkle 14s ease-in-out -5s infinite alternate;
}

@keyframes twinkle {
  from { opacity: 0.16; }
  to { opacity: 0.5; }
}

/* Estrutura comum das camadas */
.zone-dark .layer {
  position: relative;
  z-index: 1;
  padding: clamp(4rem, 9vh, 7rem) var(--pad);
}

.zone-dark .layer__inner {
  max-width: var(--max);
  margin-inline: auto;
  position: relative;
}

.zone-dark .sec-num {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  color: var(--ink-faint);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 1.6rem;
}

.zone-dark .sec-num__digits {
  color: var(--cyan);
  font-weight: 400;
}

.zone-dark .sec-num::after {
  content: "";
  flex: 0 1 140px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan-line), transparent);
}

.zone-dark .copy {
  font-size: clamp(0.95rem, 1.15vw, 1.06rem);
  color: var(--ink-dim);
  max-width: 62ch;
}

.zone-dark .copy + .copy {
  margin-top: 0.9rem;
}

.zone-dark .copy--strong {
  color: var(--ink);
  font-weight: 400;
  font-family: var(--display);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 1.02rem;
}

/* .copy.copy-spaced pra ganhar do ".copy + .copy" logo acima */
.zone-dark .copy.copy-spaced {
  margin-top: 1.6rem;
}

/* Reveal on scroll */
.zone-dark [data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 0.8s cubic-bezier(0.22, 0.7, 0.3, 1),
    transform 0.8s cubic-bezier(0.22, 0.7, 0.3, 1);
}

.zone-dark [data-reveal].in {
  opacity: 1;
  transform: none;
}

/* ============================================================
   ELEMENTO 1 — HERO: feed de sinais (8 cenas)
   ============================================================ */

.zone-dark .hero {
  position: relative;
  z-index: 1;
  min-height: 100svh;
  padding: clamp(2rem, 5vh, 3.5rem) var(--pad);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.zone-dark .hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--cyan-ghost) 1px, transparent 1px),
    linear-gradient(90deg, var(--cyan-ghost) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(75% 70% at 50% 45%, #000 30%, transparent 100%);
  mask-image: radial-gradient(75% 70% at 50% 45%, #000 30%, transparent 100%);
}

.zone-dark .hero__frame {
  max-width: var(--max);
  margin-inline: auto;
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: clamp(1.5rem, 3vw, 3rem);
  align-items: stretch;
  position: relative;
}

.zone-dark .hero__meta {
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.2em;
  color: var(--ink-faint);
  text-transform: uppercase;
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1.4rem;
}

.zone-dark .hero__meta::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 9px 2px rgba(var(--accent-rgb), 0.7);
  animation: blink 2.4s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* Play/pause da narrativa, no rodapé do palco */
.zone-dark .stage__toggle {
  position: absolute;
  z-index: 3;
  left: clamp(1.5rem, 4vw, 3.5rem);
  bottom: clamp(1rem, 2vh, 1.4rem);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink);
  background: rgba(var(--dark-bg-rgb), 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid var(--cyan-line);
  border-radius: 99px;
  padding: 0.72em 1.4em;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.8em;
  box-shadow: 0 0 0 0 rgba(var(--accent-rgb), 0);
  transition: color 0.25s, border-color 0.25s, background 0.25s, box-shadow 0.25s;
}

.zone-dark .stage__toggle:hover {
  color: var(--cyan-bright);
  border-color: var(--cyan);
  background: rgba(var(--accent-rgb), 0.14);
  box-shadow: 0 0 22px -4px rgba(var(--accent-rgb), 0.5);
}

.zone-dark .stage__toggle-icon {
  width: 10px;
  height: 12px;
  flex: none;
  box-sizing: border-box;
  border-left: 3px solid var(--cyan);
  border-right: 3px solid var(--cyan);
}

.zone-dark .stage__toggle.is-paused .stage__toggle-icon {
  width: 0;
  height: 0;
  border: none;
  border-left: 11px solid var(--cyan);
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
}

@media (max-width: 420px) {
  .zone-dark .stage__toggle {
    left: 1.25rem;
    bottom: 1.1rem;
    font-size: 0.62rem;
    padding: 0.62em 1.1em;
  }
}

/* Palco das cenas */
.zone-dark .stage {
  position: relative;
  min-height: clamp(430px, 64vh, 580px);
  border: 1px solid rgba(var(--accent-rgb), 0.18);
  border-radius: 10px;
  background: linear-gradient(160deg, rgba(var(--bg-1-rgb), 0.5), rgba(var(--dark-bg-rgb), 0.65));
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  overflow: hidden;
}

.zone-dark .stage::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(var(--accent-light-rgb), 0.7), transparent);
  opacity: 0.6;
}

.zone-dark .scene {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(1.5rem, 4vw, 3.5rem);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity 0.9s ease, transform 0.9s ease, visibility 0s linear 0.9s;
}

.zone-dark .scene.active {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity 0.9s ease 0.15s, transform 0.9s ease 0.15s, visibility 0s;
}

.zone-dark .scene__label {
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 1.1rem;
}

.zone-dark .scene__label small {
  color: var(--ink-faint);
  letter-spacing: 0.18em;
  margin-right: 0.9em;
}

.zone-dark .scene .scene__primary {
  font-family: var(--display);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.018em;
  line-height: 1.04;
  font-size: clamp(1.55rem, 4.4vw, 3.2rem);
  text-wrap: balance;
  text-shadow: 0 0 40px rgba(var(--accent-rgb), 0.25);
  margin-bottom: 1rem;
  max-width: 22ch;
}

.zone-dark .scene--alert .scene__primary {
  color: var(--amber-soft);
  text-shadow: 0 0 34px rgba(var(--amber-rgb), 0.3);
}

.zone-dark .scene__secondary {
  font-size: clamp(0.95rem, 1.4vw, 1.15rem);
  color: var(--ink-dim);
  max-width: 52ch;
}

.zone-dark .scene__tertiary {
  margin-top: 0.7rem;
  font-size: 0.9rem;
  color: var(--ink-faint);
  max-width: 52ch;
}

.zone-dark .scene__synthesis {
  margin-top: 1.1rem;
  font-family: var(--display);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  font-size: clamp(0.9rem, 1.4vw, 1.05rem);
  color: var(--cyan-bright);
}

.zone-dark .scene__subtitle {
  margin-top: 1.4rem;
  font-size: 0.8rem;
  color: var(--ink-faint);
  max-width: 56ch;
}

/* Cena 5 — beats com status */
.zone-dark .scene__beats {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.zone-dark .beat {
  font-family: var(--display);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  line-height: 1.1;
  font-size: clamp(1.15rem, 2.6vw, 1.9rem);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  max-width: 26ch;
}

.zone-dark .beat__status {
  font-family: var(--mono);
  font-weight: 400;
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  width: max-content;
  padding: 0.3em 0.8em;
  border-radius: 99px;
}

.zone-dark .beat__status::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.zone-dark .beat--pendente .beat__status {
  color: var(--amber);
  border: 1px solid var(--amber-line);
  background: rgba(var(--amber-rgb), 0.08);
}

.zone-dark .beat--pendente .beat__status::before {
  background: var(--amber);
  box-shadow: 0 0 8px rgba(var(--amber-rgb), 0.8);
}

.zone-dark .beat--pendente {
  color: var(--amber-soft);
}

.zone-dark .beat--conforme .beat__status {
  color: var(--cyan);
  border: 1px solid var(--cyan-line);
  background: var(--cyan-faint);
}

.zone-dark .beat--conforme .beat__status::before {
  background: var(--cyan);
  box-shadow: 0 0 8px rgba(var(--accent-rgb), 0.8);
}

/* Progresso da cena */
.zone-dark .stage__progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: rgba(var(--accent-rgb), 0.12);
}

.zone-dark .stage__progress span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--cyan), var(--cyan-bright));
  box-shadow: 0 0 10px rgba(var(--accent-rgb), 0.7);
}

.zone-dark .stage__progress span.run {
  animation: fill var(--dwell) linear forwards;
}

@keyframes fill {
  from { width: 0; }
  to { width: 100%; }
}

/* Coluna de sinais */
.zone-dark .signals {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.35rem;
}

.zone-dark .signals__title {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.24em;
  color: var(--ink-faint);
  text-transform: uppercase;
  margin-bottom: 0.9rem;
  padding-left: 0.85rem;
}

.zone-dark .signal {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.62rem 0.85rem;
  border: 1px solid transparent;
  border-radius: 6px;
  background: none;
  cursor: pointer;
  text-align: left;
  width: 100%;
  font-family: var(--body);
  transition: border-color 0.3s, background 0.3s;
}

.zone-dark .signal:hover {
  border-color: rgba(var(--accent-rgb), 0.25);
  background: rgba(var(--accent-rgb), 0.04);
}

.zone-dark .signal__idx {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  width: 2ch;
  flex: none;
}

.zone-dark .signal__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex: none;
  background: var(--ink-faint);
  opacity: 0.5;
  transition: background 0.3s, box-shadow 0.3s, opacity 0.3s;
}

.zone-dark .signal--alert .signal__dot {
  background: var(--amber);
  opacity: 0.55;
}

.zone-dark .signal__label {
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
  transition: color 0.3s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.zone-dark .signal.active {
  border-color: var(--cyan-line);
  background: linear-gradient(90deg, var(--cyan-faint), transparent 80%);
}

.zone-dark .signal.active .signal__dot {
  background: var(--cyan);
  opacity: 1;
  box-shadow: 0 0 10px 2px rgba(var(--accent-rgb), 0.75);
}

.zone-dark .signal--alert.active .signal__dot {
  background: var(--amber);
  box-shadow: 0 0 10px 2px rgba(var(--amber-rgb), 0.75);
}

.zone-dark .signal.active .signal__label {
  color: var(--ink);
}

.zone-dark .signal.active .signal__idx {
  color: var(--cyan);
}

.zone-dark .hero__scrollcue {
  margin-top: clamp(1.4rem, 3vh, 2.2rem);
  display: flex;
  justify-content: center;
}

.zone-dark .hero__scrollcue a {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.55rem;
  transition: color 0.3s;
}

.zone-dark .hero__scrollcue a:hover {
  color: var(--cyan);
}

.zone-dark .hero__scrollcue a::after {
  content: "";
  width: 1px;
  height: 34px;
  background: linear-gradient(180deg, var(--cyan-line), transparent);
  animation: drip 2.2s ease-in-out infinite;
}

@keyframes drip {
  0% { transform: scaleY(0.2); transform-origin: top; }
  55% { transform: scaleY(1); }
  100% { transform: scaleY(0.2); transform-origin: top; }
}

/* ============================================================
   FILME EM DESTAQUE — abertura da página, largura cheia e 90vh
   ============================================================ */

.zone-dark .reel {
  position: relative;
  z-index: 1;
  margin-top: var(--nav-h);
  padding: 0;
  height: calc(100vh - var(--nav-h));
  height: calc(100svh - var(--nav-h));
  display: flex;
  flex-direction: column;
}

.zone-dark .reel__frame {
  position: relative;
  overflow: hidden;
  flex: 0 0 90%;
  min-height: 0;
  background: var(--filme-fundo);
  border-bottom: 1px solid rgba(var(--accent-rgb), 0.14);
}

.zone-dark .reel__band {
  flex: 0 0 10%;
  min-height: 2.6rem;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: rgba(var(--dark-bg-rgb), 0.55);
  border-bottom: 1px solid rgba(var(--accent-rgb), 0.1);
}

.zone-dark .reel__band .marquee {
  margin-top: 0;
  width: 100%;
  padding-block: 0;
}

.zone-dark .reel__frame video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.zone-dark .reel__frame video::-webkit-media-controls {
  display: none !important;
}

.zone-dark .reel__frame video::-webkit-media-controls-enclosure {
  display: none !important;
}

/* ============================================================
   ELEMENTO 2 — O QUE MONITORAMOS (marquee de 13 chips)
   ============================================================ */

.zone-dark .marquee {
  margin-top: 1.2rem;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
  padding-block: 0.4rem;
}

.zone-dark .marquee__track {
  display: flex;
  gap: 0.6rem;
  width: max-content;
  animation: marquee 38s linear infinite;
}

.zone-dark .marquee:hover .marquee__track {
  animation-play-state: paused;
}

.zone-dark .marquee__track ul {
  display: flex;
  gap: 0.6rem;
  flex: none;
}

@keyframes marquee {
  to { transform: translateX(calc(-50% - 0.3rem)); }
}

.zone-dark .chip {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  color: var(--ink-dim);
  white-space: nowrap;
  border: 1px solid rgba(var(--accent-rgb), 0.22);
  border-radius: 99px;
  padding: 0.55em 1.1em;
  background: var(--cyan-ghost);
  display: flex;
  align-items: center;
  gap: 0.6em;
  transition: color 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.zone-dark .chip::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan);
  opacity: 0.7;
  flex: none;
}

.zone-dark .chip:hover {
  color: var(--cyan-bright);
  border-color: var(--cyan);
  box-shadow: 0 0 14px rgba(var(--accent-rgb), 0.3);
}

/* Responsivo da zona escura */
@media (max-width: 960px) {
  .zone-dark .hero__frame {
    grid-template-columns: 1fr;
  }
  .zone-dark .signals {
    flex-direction: row;
    overflow-x: auto;
    gap: 0.5rem;
    padding-bottom: 0.4rem;
    scrollbar-width: none;
  }
  .zone-dark .signals::-webkit-scrollbar {
    display: none;
  }
  .zone-dark .signals__title {
    display: none;
  }
  .zone-dark .signal {
    width: auto;
    flex: none;
    padding: 0.5rem 0.8rem;
  }
  .zone-dark .signal__label {
    max-width: 15ch;
  }
}

@media (max-width: 640px) {
  .zone-dark .stage {
    min-height: 440px;
  }
}

@media (max-width: 420px) {
  .zone-dark .scene {
    padding: 1.25rem;
  }
}