/* Signal Room — timber station with a steel console; every control is animated. */

#sig-game.block {
  padding: 0 !important;
  overflow: hidden;
  border-color: #2a2018 !important;
  background: #17120d !important;
}

#sig-room {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  isolation: isolate;
  background: #17120d;
  container-type: inline-size;
  user-select: none;
  -webkit-user-select: none;
}

.sig-scene {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
}

/* Matches the glass rect (280, 48, 1040 × 328) in the 1600 × 900 viewBox. */
.sig-rain {
  position: absolute;
  left: 17.5%;
  top: 5.3333%;
  width: 65%;
  height: 36.4444%;
  border-radius: .6% / 1.9%;
  pointer-events: none;
}

/* ---------- Static art ---------- */

.sg-rivet circle {
  stroke: #171a14;
  stroke-width: 1.5;
}

.sg-rust path {
  fill: #7a4424;
  opacity: .82;
}

.sg-panel rect {
  stroke: #23281f;
  stroke-width: 3;
}

.sg-bezel {
  stroke: #171a14;
  stroke-width: 2;
}

.sg-bezel-inner {
  fill: #0d0f0c;
  stroke: #4f554c;
  stroke-width: 2;
}

.sg-label {
  font: 800 30px "JetBrains Mono", Consolas, monospace;
  fill: #e8dcc0;
  stroke: #1b1d16;
  stroke-width: 4;
  paint-order: stroke;
  text-anchor: middle;
}

.sg-exp { font-size: 20px; }

.sg-plate-text {
  font: 800 20px "JetBrains Mono", Consolas, monospace;
  fill: #3b2c14;
  letter-spacing: .06em;
  text-anchor: middle;
}

.sg-plate-small { font-size: 17px; }

.sg-hand {
  font: 700 30px "Segoe Print", "Comic Sans MS", cursive;
  fill: #a6261f;
}

.sg-type {
  font: 700 19px "Courier New", monospace;
  fill: #3a2d1a;
}

.sg-type-head {
  font-size: 21px;
  letter-spacing: .06em;
  text-anchor: middle;
}

/* OFF / ON scale beside the transmit throttle; the live position lights up */
.sg-onoff text {
  font: 900 17px "JetBrains Mono", Consolas, monospace;
  fill: #cfc3a0;
  text-anchor: middle;
  opacity: .45;
  transition: opacity .2s ease, fill .2s ease;
}

.sg-onoff path {
  fill: none;
  stroke: #cfc3a0;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: .4;
}

.sig-lever:not(.is-thrown) .sg-onoff-off { opacity: 1; }

.sig-lever.is-thrown .sg-onoff-on {
  fill: #ffb53b;
  opacity: 1;
}

.sg-crt-text {
  font: 700 24px "JetBrains Mono", Consolas, monospace;
  fill: #9ef59a;
}

.sig-buffer rect {
  fill: rgba(80, 200, 90, .08);
  stroke: #6fe07a;
  stroke-width: 3;
}

.sig-slot-char {
  font: 700 34px "JetBrains Mono", Consolas, monospace;
  fill: #b6ffb0;
  text-anchor: middle;
}

.sg-vignette,
.sg-room-flash {
  pointer-events: none;
}

/* ---------- Weather ---------- */

.sg-clouds-back { animation: sg-drift 80s linear infinite; }
.sg-clouds-front { animation: sg-drift 42s linear infinite; }
.sg-waves { animation: sg-drift 34s linear infinite; }

.sg-spray path {
  opacity: 0;
  transform-box: fill-box;
  transform-origin: 50% 100%;
  animation: sg-spray 3.4s ease-out infinite;
}

.sg-spray path:nth-child(2) { animation-delay: -.6s; }
.sg-spray path:nth-child(3) { animation-delay: -2.1s; }
.sg-spray path:nth-child(4) { animation-delay: -1.3s; }
.sg-spray path:nth-child(5) { animation-delay: -2.8s; }
.sg-spray path:nth-child(6) { animation-delay: -.2s; }
.sg-spray path:nth-child(7) { animation-delay: -1.8s; }

.sg-bolt,
.sg-flash,
.sg-room-flash {
  opacity: 0;
}

.sg-flash { fill: #dfe9ff; }
.sg-room-flash { fill: #dfe9ff; }

#sig-room.is-lightning .sg-bolt { opacity: 1; }
#sig-room.is-lightning .sg-flash { opacity: .5; }
#sig-room.is-lightning .sg-room-flash { opacity: .1; }

/* ---------- Lighthouses ---------- */

.sig-house .sg-beam {
  opacity: 0;
  transform: scaleY(0);
  transform-box: fill-box;
  transform-origin: 50% 100%;
  transition: transform .55s cubic-bezier(.2, .8, .2, 1), opacity .25s ease;
}

.sig-house.is-on .sg-beam {
  opacity: .85;
  transform: scaleY(1);
}

.sig-house .sg-glow {
  opacity: 0;
  transition: opacity .2s ease;
}

.sig-house.is-on .sg-glow {
  opacity: 1;
  animation: sg-lamp-pulse 2.2s ease-in-out infinite;
}

.sig-house .sg-lamp {
  fill: #1f2a34;
  transition: fill .15s ease;
}

.sig-house.is-on .sg-lamp { fill: #ffe9a6; }

/* ---------- Red push buttons ---------- */

.sig-switch {
  cursor: pointer;
  outline: none;
}

.sig-switch .sg-cap { transition: transform .12s ease; }

.sig-switch:active .sg-cap,
.sig-switch.is-pressing .sg-cap {
  transform: translateY(7px);
}

.sg-cap-base {
  stroke: #3a0905;
  stroke-width: 2;
}

.sig-switch:hover .sg-cap-base { filter: url(#sg-shadow-sm) brightness(1.12); }

.sg-cap-lit {
  opacity: 0;
  transition: opacity .15s ease;
}

.sig-switch.is-on .sg-cap-lit { opacity: 1; }

.sg-cap-glow {
  opacity: 0;
  transition: opacity .2s ease;
}

.sig-switch.is-on .sg-cap-glow {
  opacity: 1;
  animation: sg-flicker .45s ease-out 1;
}

.sg-cap-shine {
  fill: #fff;
  opacity: .25;
}

.sig-switch.is-on .sg-cap-shine { opacity: .6; }

.sig-switch:focus-visible .sg-bezel {
  stroke: #ffd98a;
  stroke-width: 5;
}

/* ---------- Radar ---------- */

.sig-radar-sweep {
  transform-box: fill-box;
  transform-origin: 0 100%;
  animation: sg-spin 3.6s linear infinite;
}

.sig-blip {
  opacity: 0;
  transition: opacity .2s ease;
}

.sig-blip.is-on {
  opacity: 1;
  animation: sg-blip 1.8s ease-out infinite;
}

/* ---------- CRT ---------- */

.sg-crt-cursor { animation: sg-blink 1s steps(1) infinite; }
.sg-crt-roll { animation: sg-roll 5s linear infinite; }

/* ---------- Transmit throttle (hinged at the rod feet; posed by JS) ---------- */

.sig-lever {
  cursor: grab;
  outline: none;
  touch-action: none;
}

.sig-lever.is-dragging { cursor: grabbing; }

.sg-grip {
  stroke: #3a0d08;
  stroke-width: 2;
}

.sig-lever:hover .sg-grip,
.sig-lever:focus-visible .sg-grip {
  filter: brightness(1.18);
}

.sg-housing-top {
  stroke: #3a0d08;
  stroke-width: 2;
  stroke-linejoin: round;
}

.sig-lever:focus-visible .sg-housing-top { stroke: #ffd98a; }

.sg-housing-front {
  stroke: #3a0d08;
  stroke-width: 2;
}

.sg-send-lamp {
  fill: #3a2810;
  stroke: #1a1208;
  stroke-width: 2;
  transition: fill .2s ease;
}

.sig-lever.is-thrown .sg-send-lamp { fill: #ffb53b; }

.sg-send-glow {
  opacity: 0;
  transition: opacity .2s ease;
}

.sig-lever.is-thrown .sg-send-glow { opacity: 1; }

/* ---------- Wall papers ---------- */

.sig-chart-glow {
  fill: none;
  stroke: #ff4a3a;
  stroke-width: 4;
  opacity: 0;
}

.sig-chart-note.is-hot .sig-chart-glow { animation: sg-chart .9s ease-in-out infinite; }

.sig-note {
  cursor: pointer;
  outline: none;
}

.sig-note-lift {
  transform-box: fill-box;
  transform-origin: 50% 0;
  transition: transform .2s ease;
}

.sig-note:hover .sig-note-lift,
.sig-note:focus-visible .sig-note-lift {
  transform: translateY(-6px) rotate(-2deg);
}

/* ---------- Expanded code sheet ---------- */

#sig-room .sig-note-modal[hidden] { display: none !important; }

.sig-note-modal {
  position: absolute;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 1.5cqw;
  box-sizing: border-box;
  background: rgba(3, 5, 4, .84);
  backdrop-filter: blur(4px);
}

.sig-code-sheet {
  position: relative;
  box-sizing: border-box;
  width: min(650px, 88%);
  max-height: 92%;
  padding: 2.2cqw 2.4cqw 2cqw;
  overflow: auto;
  border: .18cqw solid #927844;
  border-radius: .3cqw;
  color: #302517;
  background:
    repeating-linear-gradient(0deg, transparent 0 29px, rgba(121, 91, 41, .13) 29px 30px),
    #eddb91;
  box-shadow: 0 1.2cqw 3cqw rgba(0, 0, 0, .68);
  transform: rotate(-.6deg);
  animation: sg-sheet-in .25s ease-out;
}

.sig-code-sheet h3 {
  margin: 0 3.5cqw 1.2cqw 0;
  color: #302517 !important;
  font-family: "Segoe Print", "Comic Sans MS", cursive;
  font-size: clamp(17px, 2.2cqw, 25px) !important;
}

.sig-note-close {
  position: absolute;
  top: .8cqw;
  right: .8cqw;
  width: 3.1cqw;
  min-width: 30px;
  height: 3.1cqw;
  min-height: 30px;
  padding: 0;
  border: 2px solid #564229;
  border-radius: 50%;
  color: #3c2d1c;
  background: #f5e8ae;
  font: 800 22px/1 system-ui, sans-serif;
  cursor: pointer;
}

.sig-alphabet {
  display: grid;
  grid-template-columns: repeat(7, minmax(52px, 1fr));
  gap: .6cqw .9cqw;
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: clamp(10px, 1.25cqw, 14px);
  font-weight: 800;
}

.sig-alphabet span {
  padding: .35cqw .4cqw;
  border-bottom: 1px solid rgba(74, 54, 29, .26);
  text-align: center;
}

.sig-digits {
  margin: 1.2cqw 0 0;
  padding-top: .8cqw;
  border-top: 2px solid rgba(74, 54, 29, .36);
  font: 800 clamp(9px, 1.15cqw, 13px)/1.7 "JetBrains Mono", Consolas, monospace;
}

/* ---------- Story layer (signal-room-story.js) ---------- */

.sgs-cam {
  position: absolute;
  inset: 0;
  transform-origin: 50% 26%;
  transition: transform 1.6s cubic-bezier(.45, 0, .2, 1);
}

#sig-room.sgs-zoom .sgs-cam { transform: scale(1.55); }
#sig-room.sgs-shake .sgs-cam { animation: sgs-shake .5s ease-out; }

.sgs-dim,
.sgs-static,
.sgs-glare,
.sgs-spot {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.sgs-dim {
  background: radial-gradient(ellipse at 50% 30%, rgba(4, 7, 12, .3), rgba(2, 3, 6, .72));
  opacity: 0;
  transition: opacity 1.4s ease;
}

#sig-room.sgs-dark .sgs-dim { opacity: 1; }

.sgs-static {
  opacity: 0;
  background: repeating-linear-gradient(0deg, rgba(160, 255, 170, .08) 0 2px, transparent 2px 5px);
  mix-blend-mode: screen;
}

#sig-room.sgs-radio .sgs-static { animation: sgs-static .24s steps(3) infinite; }
#sig-room.sgs-radio .sig-crt { animation: sgs-crt .2s steps(2) infinite; }

.sgs-glare {
  opacity: 0;
  background: radial-gradient(ellipse 60% 40% at 50% 26%, rgba(255, 232, 160, .42), rgba(255, 232, 160, 0) 70%);
  transition: opacity 1.2s ease;
}

#sig-room.sgs-blaze .sgs-glare { opacity: 1; }
#sig-room.sgs-sent .sig-house.is-on .sg-beam,
#sig-room.sgs-blaze .sig-house .sg-beam { opacity: 1; filter: brightness(1.45); }
#sig-room.sgs-sent .sig-house.is-on .sg-glow,
#sig-room.sgs-blaze .sig-house .sg-glow { animation: none; opacity: 1; }

.sgs-spot {
  z-index: 20;
  opacity: 0;
  transition: opacity .35s ease;
}

.sgs-spot.is-on { opacity: 1; }

.sgs-tip {
  --tip-edge: #c9953f;
  --tip-fill: rgba(14, 16, 13, .94);
  position: absolute;
  padding: .45cqw 1cqw;
  border: 1.5px solid var(--tip-edge);
  border-radius: .35cqw;
  color: #ffd27a;
  background: var(--tip-fill);
  box-shadow: 0 .3cqw 1.2cqw rgba(0, 0, 0, .55), 0 0 1cqw rgba(255, 198, 90, .18);
  font: 700 clamp(11px, 1.3cqw, 17px) "JetBrains Mono", Consolas, monospace;
  letter-spacing: .08em;
  white-space: nowrap;
}

.sgs-tip::after {
  content: "";
  position: absolute;
  width: .8cqw;
  height: .8cqw;
  min-width: 7px;
  min-height: 7px;
  border: 1.5px solid var(--tip-edge);
  background: var(--tip-fill);
}

.sgs-tip.is-top { transform: translate(-50%, -100%); }
.sgs-tip.is-bottom { transform: translate(-50%, 0); }
.sgs-tip.is-right { transform: translate(0, -50%); }

.sgs-tip.is-top::after {
  left: 50%;
  top: 100%;
  border-top: 0;
  border-left: 0;
  transform: translate(-50%, -50%) rotate(45deg);
}

.sgs-tip.is-bottom::after {
  left: 50%;
  bottom: 100%;
  border-bottom: 0;
  border-right: 0;
  transform: translate(-50%, 50%) rotate(45deg);
}

.sgs-tip.is-right::after {
  right: 100%;
  top: 50%;
  border-top: 0;
  border-right: 0;
  transform: translate(50%, -50%) rotate(45deg);
}
.sgs-tip[hidden] { display: none; }

#sig-room .sgs-dialog {
  position: absolute;
  left: 4%;
  right: 4%;
  bottom: 3%;
  z-index: 30;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 1.4cqw;
  min-height: 9cqw;
  padding: 1.1cqw 3cqw 1.1cqw 1.4cqw;
  border: .2cqw solid #b58a3c;
  border-radius: .8cqw;
  color: #efe4c8;
  background: linear-gradient(180deg, rgba(22, 26, 22, .95), rgba(10, 12, 10, .97));
  box-shadow: 0 1cqw 3cqw rgba(0, 0, 0, .6);
  cursor: pointer;
  animation: sgs-pop .22s ease-out;
}

#sig-room .sgs-dialog.is-top { top: 7%; bottom: auto; }
#sig-room .sgs-dialog[hidden] { display: none; }
#sig-room .sgs-dialog.is-hold { cursor: default; }
#sig-room .sgs-dialog.is-radio { border-color: #4fae5c; }

.sgs-face {
  width: clamp(64px, 10.5cqw, 112px);
  height: clamp(64px, 10.5cqw, 112px);
  overflow: hidden;
  border: .15cqw solid #6b5a33;
  border-radius: .6cqw;
  background: #273029;
}

.sgs-dialog.is-radio .sgs-face { border-color: #3d8a49; }
.sgs-face svg { display: block; width: 100%; height: 100%; }
.sgs-face img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sgs-waves path { animation: sgs-wave 1s ease-in-out infinite; }
.sgs-waves path:nth-child(2) { animation-delay: .25s; }
.sgs-needle { animation: sgs-needle .5s steps(2) infinite; transform-origin: 60px 51px; }

#sig-room .sgs-name {
  margin-bottom: .4cqw;
  color: #ffc65a;
  font: 800 clamp(11px, 1.25cqw, 16px) "JetBrains Mono", Consolas, monospace;
  letter-spacing: .14em;
}

#sig-room .sgs-dialog.is-radio .sgs-name { color: #8ff59a; }

#sig-room .sgs-line {
  min-height: 2.9em;
  margin: 0;
  color: #efe4c8;
  font: 600 clamp(13px, 1.65cqw, 22px)/1.45 "DM Sans", system-ui, sans-serif;
}

#sig-room .sgs-dialog.is-radio .sgs-line {
  color: #c8ffc6;
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: clamp(12px, 1.5cqw, 20px);
}

.sgs-next {
  position: absolute;
  right: 1.4cqw;
  bottom: .9cqw;
  color: #ffc65a;
  font-size: clamp(10px, 1.1cqw, 14px);
  opacity: 0;
}

.sgs-dialog.is-ready .sgs-next { opacity: 1; animation: sgs-bob .8s ease-in-out infinite; }
.sgs-dialog.is-hold .sgs-next { display: none; }

#sig-room .sgs-title,
#sig-room .sgs-clear {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 1.3cqw;
  text-align: center;
}

#sig-room .sgs-title {
  z-index: 40;
  background: radial-gradient(ellipse at 50% 40%, rgba(10, 14, 18, .5), rgba(3, 4, 6, .92));
}

#sig-room .sgs-title[hidden] { display: none; }

#sig-room .sgs-clear {
  z-index: 45;
  background: #000;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 2.4s ease, visibility 0s linear 2.4s;
}

#sig-room .sgs-clear.is-on {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: opacity 2.4s ease;
}

#sig-room .sgs-kicker {
  margin: 0;
  color: #ffc65a;
  font: 800 clamp(11px, 1.3cqw, 16px) "JetBrains Mono", Consolas, monospace;
  letter-spacing: .3em;
  text-transform: uppercase;
}

#sig-room .sgs-title h2 {
  margin: 0;
  color: #f3e7c6 !important;
  font: 700 clamp(26px, 4.6cqw, 64px)/1.05 "Fraunces", Georgia, serif !important;
  text-shadow: 0 .4cqw 2cqw rgba(0, 0, 0, .8);
}

#sig-room .sgs-clear h2 {
  margin: 0;
  color: #ffd98a !important;
  font: 900 clamp(34px, 7cqw, 96px)/1 "JetBrains Mono", Consolas, monospace !important;
  letter-spacing: .18em;
  text-shadow: 0 0 3cqw rgba(255, 200, 90, .55);
  opacity: 0;
  transform: scale(.94);
  transition: opacity 1.2s ease 2s, transform 1.2s ease 2s;
}

#sig-room .sgs-clear.is-on h2 { opacity: 1; transform: none; }

#sig-room .sgs-sub {
  margin: 0;
  color: #cfc3a0;
  font: 600 clamp(12px, 1.5cqw, 19px) "DM Sans", system-ui, sans-serif;
}

#sig-room .sgs-clear .sgs-sub,
#sig-room .sgs-clear .sgs-btn {
  opacity: 0;
  transition: opacity 1s ease 3s;
}

#sig-room .sgs-clear.is-on .sgs-sub,
#sig-room .sgs-clear.is-on .sgs-btn { opacity: 1; }

#sig-room .sgs-btn {
  margin-top: .8cqw;
  padding: .9cqw 3.2cqw;
  border: .2cqw solid #ffc65a;
  border-radius: .5cqw;
  color: #ffd98a;
  background: #2a1f0e;
  font: 800 clamp(14px, 1.8cqw, 24px) "JetBrains Mono", Consolas, monospace;
  letter-spacing: .2em;
  text-transform: uppercase;
  cursor: pointer;
}

#sig-room .sgs-btn:hover,
#sig-room .sgs-btn:focus-visible {
  color: #1d1407;
  background: #ffc65a;
  outline: none;
}

.sgs-ghost { opacity: .26; }

.sig-buffer rect.sgs-slot-now {
  stroke: #d6ffb0;
  animation: sgs-slot 1s ease-in-out infinite;
}

.sig-buffer rect.sgs-slot-sent { fill: rgba(110, 230, 120, .2); }

#sig-room.sgs-locked .sig-switch,
#sig-room.sgs-locked .sig-lever,
#sig-room.sgs-locked .sig-note { cursor: default; }
#sig-room.sgs-locked .sig-switch:hover .sg-cap-base { filter: url(#sg-shadow-sm); }
#sig-room.sgs-locked .sig-lever:hover .sg-grip { filter: none; }
#sig-room.sgs-locked .sig-note:hover .sig-note-lift { transform: none; }

#sig-room .sgs-clear.is-long h2 {
  font-size: clamp(26px, 5.4cqw, 76px) !important;
  letter-spacing: .1em;
}

#sig-room .sgs-dialog.is-onair { border-color: #e0573f; }
#sig-room .sgs-dialog.is-passive { pointer-events: none; }

/* Rescuer decoding: docked over the chart so the telescope, cipher note and keyboard stay clear. */
#sig-room .sgs-dialog.is-mid {
  top: 2.5%;
  bottom: auto;
  left: 33.5%;
  right: 18%;
  min-height: 0;
  gap: 1cqw;
  padding: .9cqw 1.4cqw .9cqw 1cqw;
}

#sig-room .sgs-dialog.is-mid .sgs-face {
  width: clamp(44px, 6.5cqw, 76px);
  height: clamp(44px, 6.5cqw, 76px);
}

#sig-room .sgs-dialog.is-mid .sgs-line {
  min-height: 0;
  font-size: clamp(11px, 1.4cqw, 18px);
}

#sig-room.sgr-snap .sgs-cam { transition: none !important; }
#sig-room .sgs-dialog.is-onair .sgs-name { color: #ff8a6e; }

/* ---------- Role picker ---------- */

.sgs-roles {
  display: flex;
  gap: 2cqw;
  margin-top: .6cqw;
}

#sig-room .sgs-role {
  display: grid;
  justify-items: center;
  gap: .5cqw;
  width: clamp(150px, 21cqw, 280px);
  padding: 1.2cqw 1cqw 1.3cqw;
  border: .2cqw solid #8a6a32;
  border-radius: .8cqw;
  color: #e8dcc0;
  background: rgba(30, 24, 14, .88);
  font: 600 clamp(10px, 1.15cqw, 15px)/1.4 "DM Sans", system-ui, sans-serif;
  cursor: pointer;
  transition: transform .15s ease, border-color .15s ease, background .15s ease;
}

#sig-room .sgs-role img {
  width: clamp(56px, 8.5cqw, 112px);
  height: clamp(56px, 8.5cqw, 112px);
  border: .15cqw solid #6b5a33;
  border-radius: 50%;
  object-fit: cover;
}

#sig-room .sgs-role strong {
  color: #ffd98a;
  font: 800 clamp(13px, 1.7cqw, 22px) "JetBrains Mono", Consolas, monospace;
  letter-spacing: .08em;
  text-transform: uppercase;
}

#sig-room .sgs-role span { color: #cfc3a0; }

#sig-room .sgs-roles[hidden],
#sig-room .sgs-back[hidden] { display: none; }

#sig-room .sgs-role-icon {
  display: grid;
  place-items: center;
  width: clamp(56px, 8.5cqw, 112px);
  height: clamp(56px, 8.5cqw, 112px);
  border: .15cqw solid #6b5a33;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 40%, #233042, #10161f);
}

#sig-room .sgs-role-icon svg { width: 66%; height: 66%; }

#sig-room .sgs-back {
  padding: .4cqw 1.2cqw;
  border: 1px solid rgba(255, 198, 90, .5);
  border-radius: 999px;
  color: #ffd98a;
  background: rgba(0, 0, 0, .45);
  font: 700 clamp(11px, 1.2cqw, 15px) "JetBrains Mono", Consolas, monospace;
  letter-spacing: .08em;
  cursor: pointer;
}

#sig-room .sgs-back:hover { background: rgba(60, 44, 18, .9); }

/* ---------- Challenge mode (signal-room-challenge.js) ---------- */

.sgc-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.sgc-layer[hidden] { display: none; }

.sgc-layer svg {
  display: block;
  width: 100%;
  height: 100%;
}

.sgc-layer .sgc-solid,
.sgc-layer .sgc-key { pointer-events: auto; }
.sgc-layer .sgc-key { cursor: pointer; }
.sgc-layer .sgc-key:hover .sgr-key-base { fill: #3a4134; }
.sgc-key-wide { font-size: 22px !important; letter-spacing: .06em; }

.sgc-crt-sub {
  font: 600 18px "JetBrains Mono", Consolas, monospace;
  fill: #7fd889;
  letter-spacing: .08em;
}

.sgc-dial-num,
.sgg-dial-num {
  font: 800 44px "JetBrains Mono", Consolas, monospace;
  fill: #c8ffc6;
  text-anchor: middle;
}

.sgc-arc { transition: stroke-dasharray .12s linear, stroke .3s ease; }
.sgc-arc.is-low { stroke: #ff6a4a; }

.sgc-layer.is-guess .sgc-speed,
.sgc-layer.is-speed .sgc-guess { display: none; }
.sgc-layer.is-guess .sgc-guess,
.sgc-layer .sgc-powers { pointer-events: none; }
.sgc-powers .sgr-power { stroke: none; opacity: 1; }

.sgg-arc { transition: stroke-dasharray .3s ease; }
.sgg-dial-num { font-size: 56px; }

.sgg-small {
  font: 700 17px "JetBrains Mono", Consolas, monospace;
  fill: #6fd47c;
  letter-spacing: .1em;
}
.sgg-key { fill: #4fa65c; }

.sgg-big {
  font: 700 28px "JetBrains Mono", Consolas, monospace;
  fill: #b6ffb0;
  letter-spacing: .08em;
}

.sgc-lcd-label {
  font: 800 18px "JetBrains Mono", Consolas, monospace;
  fill: #cfc3a0;
  letter-spacing: .18em;
  text-anchor: middle;
}

.sgc-lcd {
  font: 800 40px "JetBrains Mono", Consolas, monospace;
  fill: #b6ffb0;
  text-anchor: middle;
}

#sig-room .sgs-role:hover,
#sig-room .sgs-role:focus-visible {
  border-color: #ffc65a;
  background: rgba(60, 44, 18, .95);
  outline: none;
  transform: translateY(-3px);
}

/* ---------- Rescuer mode (signal-room-rescue.js) ---------- */

.sgr-layer {
  position: absolute;
  inset: 0;
}

.sgr-layer[hidden],
#sig-room .sgr-scope[hidden] { display: none; }

.sgr-layer svg,
.sgr-scope svg {
  display: block;
  width: 100%;
  height: 100%;
}

#sig-room.sgr-peek .sgs-cam {
  transform-origin: 17% 27%;
  transform: scale(2.6);
  transition: transform .55s cubic-bezier(.55, 0, .85, .35);
}

.sgr-layer.can-scope .sgr-scope-hit { cursor: pointer; }
.sgr-layer.can-scope .sgr-scope-hit:hover .sgr-tube { filter: url(#sg-shadow-sm) brightness(1.2); }

.sgr-scope-hit {
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

.sgr-rain-far { animation: sgr-rain-far 1.15s linear infinite; }
.sgr-rain-mid { animation: sgr-rain-mid .78s linear infinite; }
.sgr-rain-near { animation: sgr-rain-near .52s linear infinite; }

.sgr-port-glow {
  opacity: 0;
  transition: opacity .2s ease;
}

.sgr-layer.is-lit .sgr-port-glow { opacity: 1; }

.sgr-grid {
  fill: none;
  stroke: #4f6b72;
  stroke-width: 1;
  opacity: .5;
}

.sgr-grid-major {
  stroke: #33484d;
  stroke-width: 1.8;
  opacity: .7;
}

.sgr-map-num {
  font: 800 13px "JetBrains Mono", Consolas, monospace;
  fill: #3a2d1a;
}

.sgr-map-axis {
  font: 800 15px "JetBrains Mono", Consolas, monospace;
  fill: #7a2a1c;
  letter-spacing: .18em;
  text-anchor: middle;
}

.sgr-layer.can-mark .sgr-map-hit { cursor: crosshair; }

#sgr-hover {
  fill: rgba(208, 36, 27, .18);
  stroke: #d0241b;
  stroke-width: 2;
  opacity: 0;
  pointer-events: none;
}

.sgr-layer.can-mark #sgr-hover.is-on { opacity: 1; }

.sgr-x { pointer-events: none; }

.sgr-x path {
  fill: none;
  stroke: #d0241b;
  stroke-width: 6;
  stroke-linecap: round;
  transform-box: fill-box;
  transform-origin: 50% 50%;
  animation: sgr-x-pop .35s cubic-bezier(.2, 1.6, .4, 1);
}

.sgr-x.is-miss path {
  stroke: #7d3a2f;
  stroke-width: 4;
  animation: sgr-x-pop .35s cubic-bezier(.2, 1.6, .4, 1), sgr-fade 1.4s ease-in forwards;
}

.sgr-note { outline: none; }
.sgr-note-lift {
  transform-box: fill-box;
  transform-origin: 50% 0;
  transition: transform .2s ease;
}
.sgr-layer:not([hidden]) .sgr-note { cursor: pointer; }
.sgr-note:hover .sgr-note-lift { transform: translateY(-6px) rotate(-2deg); }

.sgr-blip { opacity: 0; }
.sgr-layer.is-blip .sgr-blip { opacity: 1; animation: sg-blip 1.8s ease-out infinite; }

.sgr-crt-small {
  font: 700 19px "JetBrains Mono", Consolas, monospace;
  fill: #6fd47c;
  letter-spacing: .14em;
}

.sgr-crt-big {
  font: 700 36px "JetBrains Mono", Consolas, monospace;
  fill: #b6ffb0;
  letter-spacing: .12em;
}

.sgr-key-base {
  fill: #2c3129;
  stroke: #0e100d;
  stroke-width: 2.5;
  transition: fill .15s ease;
}

.sgr-key-top { fill: #fff; opacity: .06; }

.sgr-key text {
  font: 800 28px "JetBrains Mono", Consolas, monospace;
  fill: #e8dcc0;
  text-anchor: middle;
  pointer-events: none;
}

.sgr-key-cap { transition: transform .08s ease; }
.sgr-key.is-down .sgr-key-cap { transform: translateY(3px); }
.sgr-layer.can-type .sgr-key { cursor: pointer; }
.sgr-layer.can-type .sgr-key:hover .sgr-key-base { fill: #3a4134; }
.sgr-key.is-ok .sgr-key-base { fill: #2f7a3a; }
.sgr-key.is-bad .sgr-key-base { fill: #8a2a21; }

.sgr-lamp {
  fill: #3a2810;
  stroke: #1a1208;
  stroke-width: 2;
  transition: fill .2s ease;
}

.sgr-layer.is-auto .sgr-lamp-auto { fill: #ffb53b; animation: sg-blink .8s steps(1) infinite; }
.sgr-layer.is-air .sgr-lamp-air { fill: #ff5a3a; }

.sgr-lamp-text {
  font: 800 17px "JetBrains Mono", Consolas, monospace;
  fill: #cfc3a0;
  letter-spacing: .08em;
}

#sig-room .sgr-scope {
  position: absolute;
  inset: 0;
  z-index: 15;
  background: #020303;
  animation: sgr-scope-in .45s ease-out;
}

.sgr-house .sg-beam {
  opacity: 0;
  transform: scaleY(0);
  transform-box: fill-box;
  transform-origin: 50% 100%;
  transition: transform .35s cubic-bezier(.2, .8, .2, 1), opacity .2s ease;
}

.sgr-house.is-on .sg-beam { opacity: .85; transform: scaleY(1); }
.sgr-house .sg-glow { opacity: 0; transition: opacity .2s ease; }
.sgr-house.is-on .sg-glow { opacity: 1; }
.sgr-house .sg-lamp { fill: #1f2a34; transition: fill .15s ease; }
.sgr-house.is-on .sg-lamp { fill: #ffe9a6; }
#sig-room.sgs-blaze .sgr-house .sg-beam { filter: brightness(1.45); }

.sgr-tick {
  fill: none;
  stroke: #9ef59a;
  stroke-width: 2;
  opacity: .45;
}

.sgr-power {
  font: 800 30px "JetBrains Mono", Consolas, monospace;
  fill: #b6ffb0;
  text-anchor: middle;
  opacity: .85;
}

.sgr-exp { font-size: 19px; }

#sig-room .sgr-scope-close {
  position: absolute;
  top: 4.6%;
  right: 2.4%;
  padding: .5cqw 1.2cqw;
  border: .15cqw solid #9ef59a;
  border-radius: .5cqw;
  color: #c8ffc6;
  background: rgba(6, 20, 9, .85);
  font: 800 clamp(11px, 1.4cqw, 18px) "JetBrains Mono", Consolas, monospace;
  letter-spacing: .1em;
  cursor: pointer;
  opacity: .35;
}

#sig-room .sgr-scope.can-close .sgr-scope-close { opacity: 1; }
#sig-room .sgr-scope.can-close .sgr-scope-close:hover { color: #031006; background: #9ef59a; }

@keyframes sgr-rain-far {
  from { transform: translate(10px, -113px); }
  to { transform: translate(0, 0); }
}

@keyframes sgr-rain-mid {
  from { transform: translate(14px, -149px); }
  to { transform: translate(0, 0); }
}

@keyframes sgr-rain-near {
  from { transform: translate(19px, -197px); }
  to { transform: translate(0, 0); }
}

@keyframes sgr-scope-in {
  from { opacity: 0; transform: scale(1.08); }
  to { opacity: 1; transform: none; }
}

@keyframes sgr-x-pop {
  from { transform: scale(0); }
  to { transform: scale(1); }
}

@keyframes sgr-fade {
  0%, 60% { opacity: 1; }
  100% { opacity: 0; }
}

@keyframes sgs-shake {
  0%, 100% { transform: translate(0, 0); }
  20% { transform: translate(-.6%, .5%); }
  40% { transform: translate(.6%, -.4%); }
  60% { transform: translate(-.4%, .3%); }
  80% { transform: translate(.3%, -.2%); }
}

@keyframes sgs-static {
  0% { opacity: .2; }
  50% { opacity: .55; }
  100% { opacity: .3; }
}

@keyframes sgs-crt {
  0% { opacity: 1; }
  100% { opacity: .72; }
}

@keyframes sgs-pop {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

@keyframes sgs-bob {
  50% { transform: translateY(3px); }
}

@keyframes sgs-wave {
  0%, 100% { opacity: .2; }
  50% { opacity: 1; }
}

@keyframes sgs-needle {
  50% { transform: rotate(18deg); }
}

@keyframes sgs-slot {
  50% { stroke-opacity: .35; }
}

/* ---------- Keyframes ---------- */

@keyframes sg-drift {
  from { transform: translateX(0); }
  to { transform: translateX(-1040px); }
}

@keyframes sg-spray {
  0%, 50% { opacity: 0; transform: scale(.5, .1); }
  62% { opacity: .8; transform: scale(1, 1); }
  100% { opacity: 0; transform: scale(1.3, 1.25) translateY(-4px); }
}

@keyframes sg-lamp-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .55; }
}

@keyframes sg-flicker {
  0% { opacity: .15; }
  30% { opacity: 1; }
  45% { opacity: .35; }
  60%, 100% { opacity: 1; }
}

@keyframes sg-spin {
  to { transform: rotate(360deg); }
}

@keyframes sg-blip {
  0% { opacity: 1; }
  70% { opacity: .3; }
  100% { opacity: 1; }
}

@keyframes sg-blink {
  50% { opacity: 0; }
}

@keyframes sg-roll {
  from { transform: translateY(-30px); }
  to { transform: translateY(170px); }
}

@keyframes sg-chart {
  0%, 100% { opacity: .25; }
  50% { opacity: 1; }
}

@keyframes sg-sheet-in {
  from { opacity: 0; transform: rotate(-.6deg) translateY(14px) scale(.96); }
  to { opacity: 1; transform: rotate(-.6deg); }
}

@media (max-width: 760px) {
  .sig-alphabet { grid-template-columns: repeat(5, minmax(45px, 1fr)); }
}

@media (max-width: 520px) {
  .sig-alphabet { grid-template-columns: repeat(4, minmax(42px, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
  .sg-clouds,
  .sg-waves,
  .sg-spray path,
  .sig-radar-sweep,
  .sg-crt-roll,
  .sg-crt-cursor,
  .sig-house.is-on .sg-glow,
  .sig-blip.is-on,
  .sig-switch.is-on .sg-cap-glow,
  .sig-code-sheet,
  .sgs-waves path,
  .sgs-needle,
  #sig-room.sgs-radio .sgs-static,
  #sig-room.sgs-radio .sig-crt,
  #sig-room.sgs-shake .sgs-cam {
    animation: none;
  }

  .sgs-cam { transition: none; }

  .sig-house .sg-beam,
  .sig-switch .sg-cap {
    transition: none;
  }

  .sig-chart-note.is-hot .sig-chart-glow {
    animation: none;
    opacity: 1;
  }
}