.signal-depot {
  min-height: calc(100svh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(290px, 350px);
  background:
    radial-gradient(circle at 42% 42%, rgba(255,42,168,.16), transparent 34%),
    radial-gradient(circle at 12% 90%, rgba(71,201,92,.17), transparent 30%),
    var(--black);
}

.experiment-stage {
  min-height: 760px;
  position: relative;
  overflow: hidden;
  border-right: 2px solid var(--cream);
  background:
    linear-gradient(rgba(85,222,244,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(85,222,244,.04) 1px, transparent 1px),
    radial-gradient(circle at 50% 55%, rgba(105,44,214,.23), transparent 37%),
    #050509;
  background-size: 34px 34px, 34px 34px, auto, auto;
}
.experiment-stage > .lab-return { position: absolute; top: 18px; right: 18px; }
.experiment-stage::after {
  content: "";
  position: absolute;
  inset: auto -18% -28% -18%;
  height: 55%;
  z-index: 0;
  transform: perspective(420px) rotateX(62deg);
  transform-origin: bottom;
  background-image:
    linear-gradient(rgba(85,222,244,.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(85,222,244,.22) 1px, transparent 1px);
  background-size: 62px 44px;
  mask-image: linear-gradient(to top, #000, transparent 92%);
  pointer-events: none;
}

.experiment-copy {
  position: absolute;
  z-index: 8;
  top: clamp(28px, 4vw, 54px);
  left: clamp(22px, 4vw, 62px);
  max-width: 530px;
  pointer-events: none;
}
.experiment-copy .mono { margin: 0 0 13px; color: var(--cyan); font-size: .7rem; font-weight: 800; }
.experiment-copy h1 {
  margin: 0;
  color: var(--cream);
  font-size: clamp(3rem, 6vw, 6.8rem);
  font-weight: 950;
  letter-spacing: -.085em;
  line-height: .76;
  text-shadow: 5px 3px 0 var(--pink), -3px -2px 0 var(--cyan);
}
.experiment-copy > p:last-child {
  max-width: 38ch;
  margin: 24px 0 0;
  color: var(--toxic);
  font-family: "Instrument Serif Weird", Georgia, serif;
  font-size: clamp(1.8rem, 3vw, 3rem);
  font-style: italic;
  line-height: 1;
  transform: rotate(-2deg);
  text-shadow: 3px 2px 0 rgba(255,42,168,.45);
}

#tvCanvas { position: absolute; inset: 0; z-index: 2; width: 100%; height: 100%; display: block; cursor: grab; }
#tvCanvas:active { cursor: grabbing; }
.stage-message {
  position: absolute;
  z-index: 9;
  left: clamp(22px, 4vw, 62px);
  bottom: 26px;
  padding: 10px 12px;
  border: 1px solid rgba(85,222,244,.48);
  background: rgba(4,4,8,.78);
  color: var(--cyan);
  font: 800 .67rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .12em;
}
.failure-message { position: absolute; z-index: 12; inset: 50% auto auto 50%; transform: translate(-50%,-50%); color: var(--pink); font: 900 1rem/1.4 ui-monospace, monospace; }

.signal-console {
  position: relative;
  z-index: 10;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  background:
    repeating-linear-gradient(0deg, transparent 0 4px, rgba(255,255,255,.018) 5px),
    linear-gradient(160deg, #17111b, #08080c 54%, #06120a);
}
.console-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.console-heading span { color: var(--muted); font-size: .68rem; }
.console-heading strong { color: var(--cream); font: 950 2.8rem/.8 ui-monospace, monospace; letter-spacing: -.1em; }

.signal-state { padding: 17px; border: 1px solid rgba(85,222,244,.36); background: rgba(0,0,0,.48); }
.signal-state > span { display: block; margin-bottom: 10px; color: var(--muted); font: 750 .62rem/1 ui-monospace, monospace; letter-spacing: .14em; }
.signal-state b { color: var(--pink); font: 900 1.05rem/1 ui-monospace, monospace; letter-spacing: .08em; }
.signal-meter { height: 8px; margin-top: 17px; border: 1px solid #3b3a43; background: #050507; }
.signal-meter i { display: block; width: 0; height: 100%; background: linear-gradient(90deg, var(--cyan), var(--toxic), var(--yellow), var(--pink)); box-shadow: 0 0 15px var(--pink); transition: width .28s steps(5); }

.channel-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 9px; }
.channel {
  min-height: 62px;
  padding: 10px 11px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  border: 1px solid #393842;
  background: #09090c;
  color: var(--muted);
  cursor: pointer;
  font: 800 .67rem/1 ui-monospace, monospace;
  letter-spacing: .1em;
}
.channel b { color: #5c5966; font-size: .62rem; }
.channel:hover, .channel:focus-visible { border-color: var(--cyan); color: var(--cyan); }
.channel[aria-pressed="true"] { border-color: var(--pink); background: rgba(255,42,168,.11); color: var(--cream); box-shadow: inset 4px 0 0 var(--pink); }
.channel[aria-pressed="true"] b { color: var(--toxic); }
.channel:last-child { grid-column: 1 / -1; }

.console-actions { display: grid; gap: 10px; }
.experiment-index { margin-top: auto; border-top: 1px solid var(--line); padding-top: 18px; }
.experiment-index > p { margin: 0 0 12px; color: var(--muted); font-size: .62rem; }
.experiment-index > div, .experiment-index > a { display: grid; grid-template-columns: 42px 1fr; gap: 10px; padding: 12px 0; border-top: 1px solid #2c2b33; text-decoration: none; }
.experiment-index b { color: var(--pink); font: 900 1rem/1 ui-monospace, monospace; }
.experiment-index span { font-size: .8rem; font-weight: 850; letter-spacing: .08em; }
.experiment-index small { display: block; margin-top: 6px; color: var(--toxic); font: 700 .58rem/1 ui-monospace, monospace; letter-spacing: .12em; }
.experiment-slot.locked { opacity: .42; cursor: not-allowed; }
.experiment-slot.unlocked { opacity: 1; cursor: pointer; border-top-color: var(--pink); background: linear-gradient(90deg, rgba(255,42,168,.14), transparent); }
.experiment-slot.unlocked b { color: var(--yellow); text-shadow: 0 0 12px var(--pink); }
.experiment-slot.unlocked small { color: var(--cyan); }
.experiment-slot.open { opacity: 1; border-top-color: rgba(85,222,244,.5); }
.experiment-slot.open:hover, .experiment-slot.open:focus-visible { background: linear-gradient(90deg, rgba(85,222,244,.13), transparent); }
.experiment-slot.open b { color: var(--cyan); }
.experiment-slot.open small { color: var(--toxic); }

body.full-signal .experiment-stage { animation: depot-shudder .18s steps(2) infinite; }
body.full-signal .experiment-copy h1 { animation: title-tear .32s steps(2) infinite; }
@keyframes depot-shudder { 50% { filter: saturate(1.35) hue-rotate(7deg); } }
@keyframes title-tear { 50% { text-shadow: 12px 2px 0 var(--pink), -8px -1px 0 var(--cyan); transform: translateX(2px); } }

@media (max-width: 900px) {
  .signal-depot { grid-template-columns: 1fr; }
  .experiment-stage { min-height: 720px; border-right: 0; border-bottom: 2px solid var(--cream); }
  .signal-console { min-height: 540px; }
  .experiment-index { margin-top: 20px; }
}
@media (max-width: 560px) {
  .experiment-stage { min-height: 670px; }
  .experiment-copy { top: 28px; right: 18px; left: 18px; }
  .experiment-copy h1 { font-size: clamp(2.7rem, 15vw, 4.4rem); }
  .experiment-copy > p:last-child { max-width: 32ch; font-size: 2rem; }
  .stage-message { left: 16px; right: 16px; bottom: 15px; text-align: center; }
  .signal-console { padding: 24px 16px; }
}