:root {
  --wall-bg: #060b14;
  --wall-bg-deep: #03060c;
  --wall-panel: rgba(8, 16, 29, 0.78);
  --wall-panel-strong: rgba(10, 20, 36, 0.92);
  --wall-line: rgba(180, 225, 255, 0.2);
  --wall-line-strong: rgba(210, 240, 255, 0.54);
  --wall-text: #edf5ff;
  --wall-muted: #94abc0;
  --wall-teal: #89efd8;
  --wall-amber: #ffcb72;
  --wall-sky: #79cfff;
  --wall-shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

body.signal-wall-body {
  margin: 0;
  min-height: 100vh;
  color: var(--wall-text);
  font-family: Georgia, "Times New Roman", serif;
  background:
    radial-gradient(circle at top, rgba(121, 207, 255, 0.08), transparent 32%),
    radial-gradient(circle at bottom right, rgba(255, 203, 114, 0.12), transparent 24%),
    linear-gradient(180deg, var(--wall-bg) 0%, #09111d 36%, var(--wall-bg-deep) 100%);
  overflow-x: hidden;
}

button,
a {
  font: inherit;
}

.signal-wall-noise,
.signal-city {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.signal-wall-noise {
  opacity: 0.12;
  mix-blend-mode: screen;
  background:
    repeating-linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.08) 0,
      rgba(255, 255, 255, 0.08) 1px,
      transparent 1px,
      transparent 4px
    );
}

.signal-city {
  overflow: hidden;
}

.signal-vault,
.signal-floor,
.signal-haze,
.signal-commuter {
  position: absolute;
}

.signal-vault {
  inset: 0;
  top: -24%;
  height: 68%;
  background:
    linear-gradient(180deg, rgba(210, 235, 255, 0.08), transparent 34%),
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 9%,
      rgba(210, 235, 255, 0.05) 9%,
      rgba(210, 235, 255, 0.05) 9.6%
    );
  transform: perspective(1000px) rotateX(70deg) scale(1.58);
  transform-origin: top center;
}

.signal-floor {
  left: -10%;
  right: -10%;
  bottom: -20%;
  height: 56%;
  border-top: 1px solid rgba(210, 235, 255, 0.08);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 22%),
    repeating-linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.02) 0,
      rgba(255, 255, 255, 0.02) 2px,
      transparent 2px,
      transparent 84px
    ),
    linear-gradient(180deg, rgba(10, 18, 31, 0), rgba(9, 17, 29, 0.82) 54%, rgba(3, 6, 12, 0.98) 100%);
  transform: perspective(1000px) rotateX(78deg);
  transform-origin: top center;
}

.signal-haze {
  width: 34vw;
  height: 34vw;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.22;
}

.signal-haze-a {
  top: -9vw;
  left: -6vw;
  background: rgba(121, 207, 255, 0.32);
}

.signal-haze-b {
  right: -10vw;
  top: 12vw;
  background: rgba(255, 203, 114, 0.22);
}

.signal-commuter {
  bottom: 12%;
  width: 28px;
  height: 126px;
  border-radius: 18px 18px 12px 12px;
  opacity: 0;
  filter: blur(2px);
  background: linear-gradient(180deg, rgba(220, 234, 246, 0.22), rgba(118, 139, 154, 0.06));
}

.signal-commuter::before {
  content: "";
  position: absolute;
  top: -18px;
  left: 2px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(220, 234, 246, 0.22);
}

.commuter-a {
  left: -12%;
  animation: commuter-right 12s linear infinite;
}

.commuter-b {
  left: -20%;
  height: 152px;
  animation: commuter-right 16s linear infinite;
  animation-delay: -7s;
}

.commuter-c {
  right: -12%;
  height: 118px;
  animation: commuter-left 13s linear infinite;
  animation-delay: -3s;
}

.commuter-d {
  right: -20%;
  height: 150px;
  animation: commuter-left 18s linear infinite;
  animation-delay: -11s;
}

.commuter-e {
  left: 16%;
  height: 94px;
  bottom: 14%;
  animation: commuter-depth 15s linear infinite;
  animation-delay: -6s;
}

@keyframes commuter-right {
  0% {
    opacity: 0;
    transform: translateX(0) scale(0.82);
  }
  10% {
    opacity: 0.22;
  }
  50% {
    opacity: 0.16;
    transform: translateX(58vw) scale(1.04);
  }
  100% {
    opacity: 0;
    transform: translateX(118vw) scale(1.22);
  }
}

@keyframes commuter-left {
  0% {
    opacity: 0;
    transform: translateX(0) scale(1.16);
  }
  10% {
    opacity: 0.18;
  }
  50% {
    opacity: 0.14;
    transform: translateX(-52vw) scale(0.98);
  }
  100% {
    opacity: 0;
    transform: translateX(-116vw) scale(0.76);
  }
}

@keyframes commuter-depth {
  0% {
    opacity: 0;
    transform: translateY(18px) scale(0.72);
  }
  12% {
    opacity: 0.14;
  }
  50% {
    opacity: 0.12;
    transform: translateY(-16px) scale(1);
  }
  100% {
    opacity: 0;
    transform: translateY(-48px) scale(1.3);
  }
}

.signal-shell {
  position: relative;
  z-index: 1;
  width: min(1380px, calc(100% - 28px));
  margin: 0 auto;
  padding: 22px 0 34px;
}

.signal-marquee-wrap {
  display: grid;
  gap: 10px;
  margin-bottom: 26px;
}

.signal-marquee-label,
.signal-kicker,
.signal-card-label,
.signal-screen-header p,
.signal-screen-header span,
.signal-play-item-meta,
.signal-play-item-date,
.signal-controls button,
.signal-links a,
.signal-stat-label {
  font-family: "Courier New", monospace;
}

.signal-marquee-label,
.signal-kicker,
.signal-card-label {
  margin: 0;
  color: var(--wall-teal);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.signal-marquee-mask {
  overflow: hidden;
  border: 1px solid var(--wall-line);
  background: rgba(7, 12, 24, 0.72);
  backdrop-filter: blur(10px);
}

.signal-marquee-track {
  display: inline-flex;
  gap: 18px;
  min-width: max-content;
  padding: 14px 18px;
  animation: marquee-scroll 40s linear infinite;
}

.signal-marquee-track:hover {
  animation-play-state: paused;
}

.signal-marquee-item {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--wall-text);
  text-decoration: none;
  white-space: nowrap;
}

.signal-marquee-item strong {
  color: var(--wall-amber);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.signal-marquee-item span {
  color: var(--wall-muted);
  font-size: 0.96rem;
}

.signal-marquee-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--wall-teal), var(--wall-sky));
  box-shadow: 0 0 16px rgba(121, 207, 255, 0.6);
}

@keyframes marquee-scroll {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

.signal-hero {
  padding: 10px 0 22px;
}

.signal-intro {
  max-width: 860px;
}

.signal-intro h1 {
  margin: 12px 0 16px;
  font-size: clamp(2.8rem, 5vw, 5.6rem);
  line-height: 0.9;
  letter-spacing: -0.03em;
}

.signal-lede {
  margin: 0;
  max-width: 64ch;
  color: var(--wall-muted);
  font-size: 1.02rem;
  line-height: 1.72;
}

.signal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.signal-links a,
.signal-controls button,
.signal-cta,
.signal-playlist button {
  color: var(--wall-text);
}

.signal-links a {
  padding: 12px 15px;
  border: 1px solid var(--wall-line);
  background: rgba(6, 12, 22, 0.64);
  text-decoration: none;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.signal-stage-layout {
  display: grid;
  grid-template-columns: minmax(220px, 0.9fr) minmax(0, 2fr) minmax(260px, 1fr);
  gap: 22px;
  align-items: start;
}

.signal-sidebar {
  display: grid;
  gap: 18px;
}

.signal-data-card,
.signal-stat,
.signal-playlist-head,
.signal-play-item,
.signal-screen-shell {
  border: 1px solid var(--wall-line);
  background: var(--wall-panel);
  backdrop-filter: blur(14px);
  box-shadow: var(--wall-shadow);
}

.signal-data-card,
.signal-playlist-head {
  padding: 18px;
}

.signal-data-card h2,
.signal-playlist-head h2 {
  margin: 8px 0 10px;
  font-size: 1.45rem;
}

.signal-card-copy {
  margin: 0;
  color: var(--wall-muted);
  line-height: 1.7;
}

.signal-stats {
  display: grid;
  gap: 12px;
}

.signal-stat {
  padding: 14px 16px;
}

.signal-stat-label {
  display: block;
  color: var(--wall-muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.signal-stat strong {
  display: block;
  margin-top: 8px;
  font-size: 1.42rem;
  line-height: 1.1;
}

.signal-screen-wrap {
  position: relative;
  padding-top: 24px;
}

.signal-hangers {
  position: absolute;
  inset: 0 0 auto 0;
  height: 30px;
  pointer-events: none;
}

.signal-hangers span {
  position: absolute;
  top: -16px;
  width: 1px;
  height: 48px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.8), transparent);
}

.signal-hangers span:first-child {
  left: 18%;
}

.signal-hangers span:last-child {
  right: 18%;
}

.signal-screen-shell {
  position: relative;
  padding: 18px;
  animation: wall-float 6.8s ease-in-out infinite;
}

@keyframes wall-float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

.signal-screen-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.signal-screen-header p,
.signal-screen-header span {
  margin: 0;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.signal-screen-header p {
  color: var(--wall-amber);
}

.signal-screen-header span {
  color: var(--wall-muted);
  text-align: right;
}

.signal-screen {
  position: relative;
  min-height: 640px;
  overflow: hidden;
  border: 1px solid var(--wall-line-strong);
  background:
    linear-gradient(rgba(0, 0, 0, 0.12), rgba(0, 0, 0, 0.3)),
    radial-gradient(circle at top, rgba(255, 255, 255, 0.08), transparent 40%),
    linear-gradient(160deg, #192434 0%, #0c1321 54%, #060c15 100%);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.05),
    0 20px 60px rgba(0, 0, 0, 0.42);
}

.signal-screen::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent 14%),
    repeating-linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.05) 0,
      rgba(255, 255, 255, 0.05) 1px,
      transparent 1px,
      transparent 4px
    );
  opacity: 0.24;
  pointer-events: none;
}

.signal-slide {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 22px;
  min-height: 640px;
  padding: 26px;
}

.signal-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.signal-chip {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  color: var(--wall-muted);
  font-family: "Courier New", monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.signal-slide h2 {
  margin: 0;
  max-width: 11ch;
  font-size: clamp(2.4rem, 5vw, 4.8rem);
  line-height: 0.9;
  letter-spacing: -0.04em;
}

.signal-copy {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(220px, 0.8fr);
  gap: 18px;
  align-items: end;
}

.signal-summary {
  margin: 0;
  color: var(--wall-text);
  font-size: 1.06rem;
  line-height: 1.75;
}

.signal-note {
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(7, 12, 22, 0.56);
}

.signal-note p {
  margin: 0;
  color: var(--wall-muted);
  line-height: 1.7;
}

.signal-note strong {
  display: block;
  margin-bottom: 6px;
  color: var(--wall-amber);
  font-family: "Courier New", monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.signal-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}

.signal-meta {
  display: grid;
  gap: 6px;
}

.signal-meta span {
  color: var(--wall-muted);
  font-family: "Courier New", monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.signal-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border: 1px solid rgba(255, 203, 114, 0.34);
  background: linear-gradient(135deg, rgba(255, 203, 114, 0.18), rgba(121, 207, 255, 0.12));
  text-decoration: none;
  font-family: "Courier New", monospace;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.signal-controls {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}

.signal-controls button {
  flex: 1;
  min-height: 44px;
  border: 1px solid var(--wall-line);
  background: rgba(7, 12, 24, 0.68);
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.signal-progress {
  margin-top: 12px;
  height: 4px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.signal-progress span {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--wall-teal), var(--wall-amber));
}

.signal-playlist {
  display: grid;
  gap: 12px;
}

.signal-play-item {
  display: grid;
  gap: 8px;
  width: 100%;
  padding: 14px 16px;
  text-align: left;
  cursor: pointer;
}

.signal-play-item.is-active {
  border-color: var(--wall-line-strong);
  background: rgba(12, 24, 42, 0.9);
}

.signal-play-item-meta,
.signal-play-item-date {
  color: var(--wall-muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.signal-play-item strong {
  font-size: 1.08rem;
  line-height: 1.25;
}

.signal-play-item p {
  margin: 0;
  color: var(--wall-muted);
  line-height: 1.55;
}

.signal-links a:hover,
.signal-controls button:hover,
.signal-cta:hover,
.signal-play-item:hover,
.signal-marquee-item:hover {
  border-color: var(--wall-line-strong);
  color: var(--wall-text);
}

.signal-links a:hover,
.signal-cta:hover {
  text-decoration: none;
}

.signal-links a:focus-visible,
.signal-controls button:focus-visible,
.signal-cta:focus-visible,
.signal-play-item:focus-visible {
  outline: 2px solid rgba(121, 207, 255, 0.72);
  outline-offset: 2px;
}

@media (max-width: 1120px) {
  .signal-stage-layout {
    grid-template-columns: 1fr;
  }

  .signal-screen-wrap {
    order: -1;
  }

  .signal-screen {
    min-height: 560px;
  }

  .signal-slide {
    min-height: 560px;
  }

  .signal-playlist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .signal-shell {
    width: min(100% - 18px, 100%);
    padding-top: 16px;
  }

  .signal-intro h1 {
    font-size: clamp(2.4rem, 14vw, 3.8rem);
  }

  .signal-screen-shell,
  .signal-data-card,
  .signal-playlist-head,
  .signal-stat,
  .signal-play-item {
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.36);
  }

  .signal-screen {
    min-height: 520px;
  }

  .signal-slide {
    min-height: 520px;
    padding: 18px;
  }

  .signal-copy {
    grid-template-columns: 1fr;
  }

  .signal-footer {
    flex-direction: column;
    align-items: stretch;
  }

  .signal-controls {
    flex-direction: column;
  }

  .signal-playlist {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .signal-marquee-track,
  .signal-screen-shell,
  .signal-commuter {
    animation: none;
  }
}