*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --wood: #3a281a;
  --wood-light: #5e4129;
  --wood-dark: #241710;
  --brass: #c9a227;
  --brass-dark: #8b6914;
  --phosphor: #7cdf8f;
  --phosphor-dim: #2c4a30;
  --screen-bg: #06120a;
  --glow: #ff6b35;
  --glow-dim: #994020;
  --station-glow: #7cdf8f;
}

html,
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(ellipse at 50% 30%, #100b18 0%, #04030a 75%);
  font-family: "Courier New", Courier, monospace;
  color: #d4c4a8;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  overflow-x: hidden;
}

/* ===================================================================
   Galaxy: drifting starfield canvas + breathing nebulas
   =================================================================== */
.galaxy {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
}

.nebula {
  position: fixed;
  z-index: 0;
  width: 70vmax;
  height: 70vmax;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(60px);
  opacity: 0.5;
  mix-blend-mode: screen;
}

.nebula-a {
  top: -25vmax;
  left: -18vmax;
  background: radial-gradient(circle at 40% 45%,
    rgba(64, 134, 90, 0.32) 0%,
    rgba(30, 80, 110, 0.18) 45%,
    transparent 70%);
  animation: nebula-drift-a 46s ease-in-out infinite alternate;
}

.nebula-b {
  bottom: -30vmax;
  right: -20vmax;
  background: radial-gradient(circle at 60% 55%,
    rgba(110, 60, 130, 0.26) 0%,
    rgba(40, 90, 80, 0.16) 50%,
    transparent 72%);
  animation: nebula-drift-b 58s ease-in-out infinite alternate;
}

@keyframes nebula-drift-a {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(9vmax, 6vmax) scale(1.18); }
}

@keyframes nebula-drift-b {
  0%   { transform: translate(0, 0) scale(1.1); }
  100% { transform: translate(-8vmax, -7vmax) scale(0.95); }
}

/* ===================================================================
   Boot screen: power-on ritual
   =================================================================== */
.boot {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at 50% 42%, rgba(10, 26, 16, 0.55) 0%, rgba(2, 3, 7, 0.92) 75%);
  backdrop-filter: blur(2px);
  transition: opacity 0.7s ease, visibility 0.7s;
}

.boot.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.boot-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  text-align: center;
  padding: 24px;
  max-width: 640px;
}

/* the host emerges from a signal portal: concentric rings + a radar sweep */
.boot-portal {
  position: relative;
  width: min(340px, 72vw);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  margin-bottom: 4px;
}

.portal-ring {
  position: absolute;
  inset: 0;
  margin: auto;
  border-radius: 50%;
  border: 1px solid rgba(124, 223, 143, 0.35);
  pointer-events: none;
}

.portal-ring-1 {
  width: 96%;
  height: 96%;
  box-shadow: 0 0 40px rgba(124, 223, 143, 0.12) inset;
  animation: portal-spin 26s linear infinite;
  border-style: dashed;
}

.portal-ring-2 {
  width: 72%;
  height: 72%;
  border-color: rgba(124, 223, 143, 0.22);
  animation: portal-pulse 3.6s ease-in-out infinite;
}

.portal-ring-3 {
  width: 48%;
  height: 48%;
  border-color: rgba(154, 216, 255, 0.3);
  animation: portal-pulse 3.6s ease-in-out infinite 0.6s;
}

.portal-sweep {
  position: absolute;
  inset: 2%;
  border-radius: 50%;
  pointer-events: none;
  background: conic-gradient(
    from 0deg,
    rgba(124, 223, 143, 0) 0deg,
    rgba(124, 223, 143, 0) 300deg,
    rgba(124, 223, 143, 0.28) 350deg,
    rgba(124, 223, 143, 0) 360deg
  );
  mask-image: radial-gradient(circle, transparent 30%, black 31%, black 100%);
  animation: portal-spin 5.5s linear infinite;
}

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

@keyframes portal-pulse {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.05); opacity: 1; }
}

.boot-host {
  position: relative;
  z-index: 2;
  width: min(248px, 52vw);
  mix-blend-mode: screen;
  filter: drop-shadow(0 0 36px rgba(124, 223, 143, 0.4));
  animation: boot-host-float 4.2s ease-in-out infinite;
  user-select: none;
}

/* decorative frequency strip under the title */
.boot-strip {
  display: flex;
  gap: 18px;
  align-items: baseline;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: rgba(124, 223, 143, 0.5);
  border-top: 1px solid rgba(124, 223, 143, 0.18);
  border-bottom: 1px solid rgba(124, 223, 143, 0.18);
  padding: 5px 0;
}

.boot-strip span:nth-child(4) {
  color: #ff5a48;
  animation: boot-strip-blip 1.6s steps(1) infinite;
}

@keyframes boot-strip-blip {
  0%, 60% { opacity: 1; }
  61%, 100% { opacity: 0.2; }
}

@keyframes boot-host-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

.boot-title {
  position: relative;
  margin: 0;
  font-size: clamp(1.7rem, 6.6vw, 3.5rem);
  font-weight: bold;
  letter-spacing: 0.3em;
  line-height: 1.05;
  color: #d6ffe0;
  text-shadow:
    0 0 18px rgba(124, 223, 143, 0.8),
    0 0 44px rgba(124, 223, 143, 0.45),
    0 0 90px rgba(124, 223, 143, 0.25);
  animation: title-glitch 5s steps(1) infinite;
}

/* RGB split glitch flashes */
@keyframes title-glitch {
  0%, 91%, 100% { text-shadow: 0 0 16px rgba(124, 223, 143, 0.7), 0 0 50px rgba(124, 223, 143, 0.3); transform: none; }
  92% { text-shadow: -3px 0 #ff3b6b, 3px 0 #3bd9ff, 0 0 18px rgba(124, 223, 143, 0.8); transform: translateX(2px) skewX(2deg); }
  94% { text-shadow: 3px 0 #ff3b6b, -3px 0 #3bd9ff, 0 0 18px rgba(124, 223, 143, 0.8); transform: translateX(-2px); }
  96% { text-shadow: -2px 0 #ff3b6b, 2px 0 #3bd9ff, 0 0 18px rgba(124, 223, 143, 0.8); transform: skewX(-1.5deg); }
}

.boot-sub {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.3em;
  color: var(--phosphor);
  opacity: 0.6;
  text-transform: uppercase;
}

.boot-langs {
  display: flex;
  gap: 10px;
}

.boot-langs button {
  font-family: inherit;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  padding: 8px 18px;
  background: rgba(4, 16, 8, 0.6);
  border: 1px solid rgba(124, 223, 143, 0.35);
  border-radius: 4px;
  color: rgba(124, 223, 143, 0.6);
  cursor: pointer;
  transition: all 0.18s;
}

.boot-langs button:hover {
  border-color: rgba(124, 223, 143, 0.8);
  color: var(--phosphor);
}

.boot-langs button.active {
  background: rgba(124, 223, 143, 0.14);
  border-color: var(--phosphor);
  color: var(--phosphor);
  box-shadow: 0 0 16px rgba(124, 223, 143, 0.3);
}

.power-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 6px;
  padding: 14px 34px;
  font-family: inherit;
  font-size: 0.95rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: #061008;
  background: linear-gradient(180deg, #9df2ae, #58c878);
  border: none;
  border-radius: 40px;
  cursor: pointer;
  box-shadow:
    0 0 28px rgba(124, 223, 143, 0.5),
    0 6px 18px rgba(0, 0, 0, 0.6),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
  animation: power-pulse 2.2s ease-in-out infinite;
  transition: transform 0.12s;
}

.power-btn:hover {
  transform: scale(1.05);
}

.power-btn:active {
  transform: scale(0.97);
}

.power-icon {
  font-size: 1.25rem;
}

@keyframes power-pulse {
  0%, 100% { box-shadow: 0 0 22px rgba(124, 223, 143, 0.45), 0 6px 18px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.5); }
  50% { box-shadow: 0 0 48px rgba(124, 223, 143, 0.85), 0 6px 18px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.5); }
}

.boot-hint {
  margin: 4px 0 0;
  font-size: 0.62rem;
  letter-spacing: 0.24em;
  color: var(--phosphor);
  opacity: 0.4;
  text-transform: uppercase;
}

/* CRT power-on: collapses to a bright line, then opens */
@keyframes crt-on {
  0%   { transform: scaleY(0.005) scaleX(0.4); filter: brightness(7) saturate(0.4); }
  45%  { transform: scaleY(0.005) scaleX(1.02); filter: brightness(7) saturate(0.4); }
  70%  { transform: scaleY(1.04) scaleX(1); filter: brightness(2.2); }
  100% { transform: none; filter: none; }
}

.tv-screen.powering-on {
  animation: crt-on 1.05s cubic-bezier(0.3, 0.8, 0.3, 1) 1;
}

/* ===================================================================
   Vintage TV cabinet
   =================================================================== */
.tv-cabinet {
  position: relative;
  z-index: 1;
  width: min(1040px, 92vw);
  background:
    repeating-linear-gradient(
      93deg,
      rgba(0, 0, 0, 0.1) 0 3px,
      rgba(255, 255, 255, 0.02) 3px 7px
    ),
    linear-gradient(150deg, var(--wood-light) 0%, var(--wood) 45%, var(--wood-dark) 100%);
  border-radius: 22px;
  padding: 18px 20px 12px;
  /* no border, no glow halo — just one soft drop shadow so the cabinet sits
     cleanly on the galaxy instead of inside a framed box */
  box-shadow: 0 26px 64px rgba(0, 0, 0, 0.55);
}

/* ===================================================================
   The CRT screen (everything lives inside)
   =================================================================== */
.tv-screen {
  position: relative;
  background:
    radial-gradient(ellipse at 50% 38%, #0b1d10 0%, var(--screen-bg) 62%, #03080a 100%);
  border-radius: 34px / 30px;
  border: 3px solid #0a0805;
  overflow: hidden;
  box-shadow:
    inset 0 0 60px rgba(0, 0, 0, 0.85),
    inset 0 0 8px rgba(0, 0, 0, 0.9),
    0 0 0 3px #11130d,
    0 0 26px rgba(124, 223, 143, 0.07);
  min-height: 520px;
}

.screen-content {
  position: relative;
  z-index: 1;
  padding: 26px 36px 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  height: 100%;
}

/* CRT layers above all content */
.noise-canvas {
  position: absolute;
  inset: 0;
  z-index: 6;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0;
  image-rendering: pixelated;
}

.crt-scanlines {
  position: absolute;
  inset: 0;
  z-index: 7;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.18) 3px,
    rgba(0, 0, 0, 0) 4px
  );
  mix-blend-mode: multiply;
}

.crt-vignette {
  position: absolute;
  inset: 0;
  z-index: 8;
  pointer-events: none;
  background: radial-gradient(
    ellipse at center,
    rgba(0, 0, 0, 0) 55%,
    rgba(0, 0, 0, 0.42) 100%
  );
}

/* curved-glass shine */
.crt-glass {
  position: absolute;
  inset: 0;
  z-index: 9;
  pointer-events: none;
  background:
    radial-gradient(
      ellipse 120% 60% at 50% -12%,
      rgba(255, 255, 255, 0.07) 0%,
      rgba(255, 255, 255, 0) 55%
    );
}

/* ===================================================================
   Header inside the screen
   =================================================================== */
.screen-header {
  text-align: center;
}

.screen-header h1 {
  margin: 0;
  font-size: clamp(0.95rem, 2.2vw, 1.35rem);
  letter-spacing: 0.5em;
  text-transform: uppercase;
  color: var(--phosphor);
  font-weight: normal;
  text-shadow: 0 0 10px rgba(124, 223, 143, 0.6);
}

.screen-header p {
  margin: 5px 0 0;
  font-size: 0.82rem;
  letter-spacing: 0.22em;
  color: var(--phosphor);
  opacity: 0.6;
}

/* ===================================================================
   Main grid: text | dial | announcer
   =================================================================== */
.screen-main {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr 0.9fr;
  gap: 26px;
  align-items: stretch;
  flex: 1;
}

.panel {
  min-width: 0;
}

/* --- Left panel: transmission --- */
.transmission {
  background: rgba(2, 10, 4, 0.55);
  border: 1px solid rgba(124, 223, 143, 0.18);
  border-radius: 6px;
  height: 320px;
  overflow-y: auto;
  padding: 14px 16px;
  font-size: 1.02rem;
  line-height: 1.6;
  color: var(--phosphor-dim);
  word-break: break-word;
  scrollbar-width: thin;
  scrollbar-color: rgba(124, 223, 143, 0.25) transparent;
  text-transform: uppercase;
}

.transmission.active {
  color: var(--station-glow);
  text-shadow:
    0 0 6px color-mix(in srgb, var(--station-glow) 45%, transparent),
    0 0 18px color-mix(in srgb, var(--station-glow) 18%, transparent);
}

.transmission .marker {
  color: var(--glow);
  font-weight: bold;
}

/* teletype cursor */
.transmission.active::after {
  content: "▮";
  margin-left: 2px;
  color: var(--station-glow);
  animation: cursor-blink 0.9s steps(1) infinite;
}

@keyframes cursor-blink {
  0%, 60% { opacity: 1; }
  61%, 100% { opacity: 0; }
}

/* phosphor flicker */
@keyframes crt-flicker {
  0%   { opacity: 1; }
  50%  { opacity: calc(1 - var(--flicker-amp, 0.04)); }
  100% { opacity: 1; }
}

.transmission.active {
  animation: crt-flicker 0.18s steps(2) infinite;
}

/* [FIN DE TRANSMISION] */
.transmission.signing-off {
  transition: opacity 2.2s ease, filter 2.2s ease;
  opacity: 0.35;
  filter: blur(0.4px);
}

/* [INTERFERENCIA] */
@keyframes glitch-shake {
  0%   { transform: translate(0, 0); }
  20%  { transform: translate(-3px, 1px) skewX(-2deg); }
  40%  { transform: translate(2px, -1px) skewX(1.5deg); }
  60%  { transform: translate(-2px, 0) skewX(-1deg); }
  80%  { transform: translate(1px, 1px); }
  100% { transform: translate(0, 0); }
}

.tv-screen.glitching .screen-content {
  animation: glitch-shake 0.12s linear 4;
  filter: saturate(2) contrast(1.3);
}

/* ===================================================================
   Center panel: galvanometer-style gauge
   =================================================================== */
.panel-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.gauge-wrap {
  position: relative;
  width: min(100%, 340px);
  cursor: ew-resize;
  touch-action: none;
  user-select: none;
  outline: none;
  border-radius: 14px;
}

.gauge-wrap:focus-visible {
  box-shadow: 0 0 0 2px rgba(124, 223, 143, 0.5);
}

.gauge-wrap:active {
  cursor: grabbing;
}

.gauge-svg {
  width: 100%;
  display: block;
  filter: drop-shadow(0 0 14px rgba(124, 223, 143, 0.12));
}

.gauge-arc {
  fill: none;
  stroke: rgba(124, 223, 143, 0.28);
  stroke-width: 2;
}

.gauge-hub {
  fill: #14100b;
  stroke: var(--brass-dark);
  stroke-width: 2;
}

/* mandala-like ornament behind the gauge (as in the reference) */
.gauge-ornament {
  position: absolute;
  inset: -16% -8%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 55%, rgba(124, 223, 143, 0.12) 0%, transparent 38%),
    repeating-conic-gradient(
      from 0deg at 50% 55%,
      rgba(124, 223, 143, 0.07) 0deg 6deg,
      transparent 6deg 30deg
    );
  border-radius: 50%;
  mask-image: radial-gradient(circle at 50% 55%, black 0%, transparent 68%);
}

.dial-tick {
  stroke: rgba(124, 223, 143, 0.65);
  stroke-width: 1.2;
}

.dial-tick-major {
  stroke: var(--phosphor);
  stroke-width: 2.4;
  filter: drop-shadow(0 0 2px rgba(124, 223, 143, 0.5));
}

.dial-label {
  fill: rgba(160, 240, 175, 0.95);
  font-size: 11.5px;
  font-weight: bold;
  text-anchor: middle;
}

/* hidden band 108-112 */
.dial-tick-hidden {
  stroke: #58ff8f;
  opacity: 0.75;
  filter: drop-shadow(0 0 2px #58ff8f);
}

.dial-label-hidden {
  fill: #58ff8f;
  opacity: 0.85;
}

.dial-needle {
  stroke: #ff4a3a;
  stroke-width: 2.4;
  stroke-linecap: round;
  filter: drop-shadow(0 0 5px rgba(255, 74, 58, 0.7));
  transition: stroke 0.2s;
}

.dial-needle.locked {
  stroke: var(--station-glow);
  filter: drop-shadow(0 0 7px var(--station-glow));
}

.freq-display {
  font-size: 2.6rem;
  color: #ff5a48;
  text-shadow: 0 0 14px rgba(255, 90, 72, 0.55);
  letter-spacing: 0.14em;
  font-variant-numeric: tabular-nums;
}

.freq-display.locked {
  color: var(--station-glow);
  text-shadow: 0 0 16px var(--station-glow);
}

@keyframes lock-settle {
  0%   { transform: scale(1.06); filter: brightness(1.7); }
  100% { transform: scale(1); filter: brightness(1); }
}

.freq-display.just-locked {
  animation: lock-settle 0.45s cubic-bezier(0.22, 1.4, 0.36, 1);
}

.meters {
  display: flex;
  align-items: center;
  gap: 16px;
}

.vu-meter {
  width: 160px;
  height: 14px;
  background: rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(124, 223, 143, 0.25);
  border-radius: 2px;
  overflow: hidden;
}

.vu-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #1d4d22, var(--phosphor), #ffd24a);
  transition: width 0.1s;
}

.tuning-lamp {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #20140a;
  border: 2px solid #3a2410;
  box-shadow: inset 0 0 4px rgba(0, 0, 0, 0.8);
}

.tuning-lamp.on {
  background: var(--glow);
  border-color: #ff9944;
  box-shadow: 0 0 12px var(--glow), inset 0 0 4px #fff8;
}

.tuning-lamp.locked {
  background: var(--station-glow);
  border-color: #5a9a20;
  box-shadow: 0 0 12px var(--station-glow);
}

@keyframes lamp-pulse {
  0%, 100% { box-shadow: 0 0 12px var(--station-glow); }
  50% { box-shadow: 0 0 26px var(--station-glow), 0 0 40px var(--station-glow); }
}

.tuning-lamp.jingle {
  animation: lamp-pulse 0.3s ease-in-out 3;
}

.station-name {
  font-size: 1.05rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--station-glow);
  text-shadow:
    0 0 10px color-mix(in srgb, var(--station-glow) 60%, transparent),
    0 0 26px color-mix(in srgb, var(--station-glow) 25%, transparent);
  text-align: center;
  min-height: 1.3em;
  opacity: 1;
}

/* ===================================================================
   Right panel: the on-screen announcer
   =================================================================== */
.panel-right {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.announcer-frame {
  position: relative;
  width: 100%;
  max-width: 320px;
  aspect-ratio: 4 / 3;
  border-radius: 10px;
  overflow: hidden;
  background: radial-gradient(ellipse at center, rgba(124, 223, 143, 0.06), transparent 75%);
}

.announcer-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0;
  transform-origin: 50% 85%;
  transition: opacity 0.35s ease;
  mix-blend-mode: screen; /* the portrait's black background melts into the screen */
  filter: drop-shadow(0 0 18px rgba(124, 223, 143, 0.25));
}

.announcer-frame.visible .announcer-img {
  opacity: 1;
}

/* idle breathing */
@keyframes announcer-idle {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-2px) scale(1.006); }
}

.announcer-frame.visible .announcer-img {
  animation: announcer-idle 3.4s ease-in-out infinite;
}

/* talking: quick bobbing synced with the voice blips */
@keyframes announcer-talk {
  0%   { transform: translateY(0) scale(1); }
  30%  { transform: translateY(-1.5px) scale(1.015, 0.99) rotate(-0.4deg); }
  60%  { transform: translateY(0.5px) scale(0.995, 1.01) rotate(0.3deg); }
  100% { transform: translateY(0) scale(1); }
}

.announcer-frame.talking .announcer-img {
  animation: announcer-talk 0.24s ease-in-out infinite;
}

/* announcer swap: glitch sweep */
@keyframes announcer-swap {
  0%   { filter: brightness(3) saturate(0); transform: translateX(-3px) skewX(3deg); opacity: 0.2; }
  40%  { filter: brightness(1.6); transform: translateX(2px) skewX(-2deg); opacity: 0.7; }
  100% { filter: brightness(1); transform: none; opacity: 1; }
}

.announcer-frame.swapping .announcer-img {
  animation: announcer-swap 0.5s steps(5) 1;
}

/* no signal: noise silhouette */
.announcer-nosignal {
  position: absolute;
  inset: 12%;
  border-radius: 50%;
  background:
    radial-gradient(ellipse at 50% 38%, rgba(124, 223, 143, 0.18) 0%, transparent 55%),
    radial-gradient(ellipse at 50% 95%, rgba(124, 223, 143, 0.12) 0%, transparent 50%);
  filter: blur(6px);
  opacity: 0.6;
  transition: opacity 0.4s;
}

.announcer-frame.visible .announcer-nosignal {
  opacity: 0;
}

/* speech bubble */
.speech-bubble {
  position: absolute;
  top: 8%;
  left: 4%;
  display: flex;
  gap: 5px;
  padding: 7px 11px;
  border: 1px solid rgba(124, 223, 143, 0.55);
  border-radius: 12px 12px 12px 2px;
  background: rgba(4, 16, 8, 0.7);
  opacity: 0;
  transition: opacity 0.25s;
}

.speech-bubble span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--phosphor);
  box-shadow: 0 0 6px var(--phosphor);
  animation: bubble-dot 1s ease-in-out infinite;
}

.speech-bubble span:nth-child(2) { animation-delay: 0.18s; }
.speech-bubble span:nth-child(3) { animation-delay: 0.36s; }

@keyframes bubble-dot {
  0%, 100% { opacity: 0.25; transform: translateY(0); }
  40% { opacity: 1; transform: translateY(-2.5px); }
}

.announcer-frame.talking .speech-bubble {
  opacity: 1;
}

/* voice bars next to the announcer */
.talk-bars {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 30px;
}

.talk-bars i {
  width: 5px;
  height: 4px;
  border-radius: 2px;
  background: var(--station-glow);
  box-shadow: 0 0 6px color-mix(in srgb, var(--station-glow) 60%, transparent);
  transition: height 0.3s;
}

@keyframes talk-bar {
  0%, 100% { height: 4px; }
  50% { height: var(--bar-max, 26px); }
}

.talk-bars.talking i {
  animation: talk-bar 0.5s ease-in-out infinite;
}

.talk-bars.talking i:nth-child(1) { --bar-max: 12px; animation-delay: 0s; }
.talk-bars.talking i:nth-child(2) { --bar-max: 20px; animation-delay: 0.07s; }
.talk-bars.talking i:nth-child(3) { --bar-max: 28px; animation-delay: 0.14s; }
.talk-bars.talking i:nth-child(4) { --bar-max: 16px; animation-delay: 0.21s; }
.talk-bars.talking i:nth-child(5) { --bar-max: 30px; animation-delay: 0.05s; }
.talk-bars.talking i:nth-child(6) { --bar-max: 18px; animation-delay: 0.18s; }
.talk-bars.talking i:nth-child(7) { --bar-max: 26px; animation-delay: 0.11s; }
.talk-bars.talking i:nth-child(8) { --bar-max: 14px; animation-delay: 0.25s; }
.talk-bars.talking i:nth-child(9) { --bar-max: 22px; animation-delay: 0.02s; }

/* ===================================================================
   Bottom oscilloscope (full width)
   =================================================================== */
.scope {
  width: 100%;
  height: 72px;
  background: rgba(2, 8, 4, 0.6);
  border: 1px solid rgba(124, 223, 143, 0.18);
  border-radius: 6px;
  background-image:
    repeating-linear-gradient(to right, rgba(124, 223, 143, 0.07) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(to bottom, rgba(124, 223, 143, 0.07) 0 1px, transparent 1px 16px);
}

.hint {
  text-align: center;
  margin: 2px 0 0;
  font-size: 0.88rem;
  color: var(--phosphor);
  opacity: 0.7;
  letter-spacing: 0.16em;
  min-height: 1.1em;
}

/* ===================================================================
   Encrypted console
   =================================================================== */
.console-wrap {
  margin-top: 10px;
  background: rgba(2, 8, 4, 0.75);
  border: 1px solid #1f3a1f;
  border-radius: 6px;
  padding: 10px;
  font-size: 0.88rem;
  box-shadow: inset 0 0 16px rgba(0, 0, 0, 0.7), 0 0 10px rgba(60, 255, 120, 0.06);
}

.console-wrap.hidden {
  display: none;
}

.console-log {
  max-height: 130px;
  overflow-y: auto;
  color: #58c878;
  white-space: pre-wrap;
  word-break: break-word;
  margin-bottom: 6px;
}

.console-log .op {
  color: #8fff9f;
  text-shadow: 0 0 6px rgba(110, 255, 140, 0.4);
}

.console-log .you {
  color: #4a7a55;
}

.console-input-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.console-prompt {
  color: #8fff9f;
}

.console-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #b8ffc8;
  font-family: inherit;
  font-size: inherit;
  caret-color: #8fff9f;
}

/* ===================================================================
   Wooden bezel: physical switches
   =================================================================== */
.bezel {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 22px;
  padding: 18px 14px 8px;
  margin-top: 6px;
  border-top: 2px solid rgba(0, 0, 0, 0.35);
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.05);
}

.bezel-side {
  display: flex;
  align-items: center;
  gap: 20px;
}

.bezel-left {
  flex-direction: column;
  gap: 8px;
}

.bezel-right {
  justify-content: flex-end;
}

.bezel-mid {
  display: flex;
  align-items: center;
  gap: 16px;
}

.bezel-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.bezel-label {
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  color: #d9b886;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.6);
}

/* language selector: three positions */
.lang-switch {
  display: flex;
  gap: 4px;
  background: #1c120a;
  border-radius: 14px;
  padding: 3px;
  border: 1px solid #0e0905;
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.8);
}

.lang-switch button {
  font-family: inherit;
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  padding: 6px 13px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: transparent;
  color: #8a6f4a;
  cursor: pointer;
  transition: all 0.15s;
}

.lang-switch button:hover {
  color: #d9b886;
}

.lang-switch button.active {
  background: linear-gradient(180deg, #6d4f2e, #4a3119);
  border-color: #2a1b0d;
  color: #ffe9bd;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

/* decorative speaker grill */
.speaker-grill {
  flex: 1;
  height: 26px;
  border-radius: 6px;
  background: repeating-linear-gradient(
    90deg,
    #1d130b 0 4px,
    #31210f 4px 8px
  );
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.7);
  opacity: 0.85;
}

/* help / host-assistant button: replays the host's guidance */
.help-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.guide-btn {
  position: relative;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 2px solid #2a1b0d;
  background:
    radial-gradient(circle at 35% 28%, #8a6a3e, #5a3d18 55%, #38260f 100%);
  cursor: pointer;
  box-shadow:
    0 4px 9px rgba(0, 0, 0, 0.65),
    inset 0 1px 0 rgba(255, 255, 255, 0.3),
    inset 0 -3px 6px rgba(0, 0, 0, 0.5);
  transition: transform 0.1s, filter 0.15s;
}

.guide-btn .guide-q {
  font-family: inherit;
  font-size: 1.5rem;
  font-weight: bold;
  color: #ffe9bd;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.7);
}

.guide-btn::after {
  /* soft pulsing ring so newcomers notice the help affordance */
  content: "";
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  border: 1.5px solid rgba(124, 223, 143, 0.5);
  animation: help-ring 2.6s ease-in-out infinite;
  pointer-events: none;
}

@keyframes help-ring {
  0%, 100% { opacity: 0.15; transform: scale(0.96); }
  50% { opacity: 0.7; transform: scale(1.06); }
}

.guide-btn:hover {
  filter: brightness(1.15);
}

.guide-btn:active {
  transform: translateY(1px);
}

.help-label {
  font-size: 0.6rem;
}

/* tuning knob: large brass control, ridged skirt, rotating face */
.knob-housing {
  display: grid;
  place-items: center;
  width: 156px;
  height: 156px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 40%, #2c1d10 0%, #190f08 70%),
    var(--wood-dark);
  border: 2px solid #0c0704;
  box-shadow:
    inset 0 4px 14px rgba(0, 0, 0, 0.85),
    inset 0 -2px 4px rgba(255, 255, 255, 0.04),
    0 2px 4px rgba(255, 255, 255, 0.05);
}

.tune-knob {
  position: relative;
  width: 122px;
  height: 122px;
  border-radius: 50%;
  cursor: grab;
  touch-action: none;
  user-select: none;
  outline: none;
  background:
    radial-gradient(circle at 50% 50%, #14100b 58%, transparent 59%),
    repeating-conic-gradient(#0c0805 0deg 5deg, #4a371d 5deg 10deg);
  border: 2px solid #0e0905;
  box-shadow:
    0 8px 18px rgba(0, 0, 0, 0.75),
    inset 0 1px 0 rgba(255, 255, 255, 0.14);
}

.tune-knob:active {
  cursor: grabbing;
}

.tune-knob:focus-visible {
  box-shadow:
    0 0 0 3px rgba(124, 223, 143, 0.5),
    0 8px 18px rgba(0, 0, 0, 0.75);
}

.knob-skirt {
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  background: radial-gradient(circle at 38% 30%, #6e5230, #2e1f10 70%);
  box-shadow: inset 0 -3px 8px rgba(0, 0, 0, 0.6);
}

.knob-face {
  position: absolute;
  inset: 18px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 36% 26%, #b08a52, #6a4920 52%, #2a1b0d 100%);
  box-shadow:
    0 4px 10px rgba(0, 0, 0, 0.65),
    inset 0 1px 0 rgba(255, 255, 255, 0.4),
    inset 0 -4px 8px rgba(0, 0, 0, 0.55);
  will-change: transform;
}

/* a subtle finger-grip dimple opposite the marker */
.knob-grip {
  position: absolute;
  bottom: 14%;
  left: 50%;
  width: 14px;
  height: 14px;
  margin-left: -7px;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, rgba(0, 0, 0, 0.55), rgba(0, 0, 0, 0.1));
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.7);
}

.knob-marker {
  position: absolute;
  top: 7px;
  left: 50%;
  width: 6px;
  height: 24px;
  margin-left: -3px;
  border-radius: 3px;
  background: linear-gradient(180deg, #ff7a5a, #ff3a28);
  box-shadow: 0 0 9px rgba(255, 90, 72, 0.9);
}

.knob-label {
  font-size: 0.8rem;
  letter-spacing: 0.32em;
  color: #ecc794;
}

/* static switch: ON/OFF lever */
.static-toggle {
  position: relative;
  width: 46px;
  height: 64px;
  border-radius: 10px;
  border: 2px solid #0e0905;
  background: linear-gradient(180deg, #241709, #18100a);
  cursor: pointer;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.8);
  padding: 0;
}

.static-toggle .lever {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 26px;
  border-radius: 6px;
  background: linear-gradient(180deg, #d9b886, #8a6536);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.7);
  transition: top 0.16s cubic-bezier(0.5, 1.6, 0.4, 1);
  top: 6px;
}

.static-toggle:not(.on) .lever {
  top: 32px;
}

.static-toggle .state-on,
.static-toggle .state-off {
  position: absolute;
  right: -26px;
  font-size: 0.55rem;
  letter-spacing: 0.12em;
  color: #6a5232;
}

.static-toggle .state-on { top: 8px; }
.static-toggle .state-off { bottom: 8px; }

.static-toggle.on .state-on { color: #ffd98c; text-shadow: 0 0 6px rgba(255, 217, 140, 0.6); }
.static-toggle:not(.on) .state-off { color: #ffd98c; text-shadow: 0 0 6px rgba(255, 217, 140, 0.6); }

/* ===================================================================
   Band expansion
   =================================================================== */
@keyframes band-expand {
  0%   { filter: brightness(2.2) saturate(0); transform: scale(0.96); }
  60%  { filter: brightness(1.4); transform: scale(1.015); }
  100% { filter: brightness(1); transform: scale(1); }
}

.gauge-svg.expanding {
  animation: band-expand 1.6s ease-out;
}

/* ===================================================================
   Boot mission briefing (what the listener has to do)
   =================================================================== */
.boot-mission {
  display: flex;
  flex-direction: column;
  gap: 9px;
  width: min(440px, 88vw);
  margin: 4px 0 2px;
}

.mission-step {
  display: flex;
  align-items: center;
  gap: 12px;
  text-align: left;
  font-size: 0.84rem;
  line-height: 1.35;
  letter-spacing: 0.03em;
  color: rgba(206, 240, 214, 0.85);
}

.mission-num {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid rgba(124, 223, 143, 0.55);
  color: var(--phosphor);
  font-size: 0.78rem;
  box-shadow: inset 0 0 10px rgba(124, 223, 143, 0.2), 0 0 10px rgba(124, 223, 143, 0.12);
}

/* ===================================================================
   Operator intercept: the warden warns you off the number station
   =================================================================== */
.intercept {
  position: absolute;
  z-index: 12;
  left: 50%;
  bottom: 9%;
  transform: translate(-50%, 22px);
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: min(78%, 540px);
  padding: 12px 18px;
  border: 1px solid rgba(120, 255, 150, 0.45);
  border-radius: 12px;
  background: rgba(2, 12, 6, 0.84);
  box-shadow: 0 0 34px rgba(60, 255, 120, 0.22), inset 0 0 22px rgba(0, 0, 0, 0.6);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s ease, transform 0.28s ease, border-color 0.28s;
}

.intercept.active {
  opacity: calc(0.45 + 0.55 * var(--prox, 0.5));
  transform: translate(-50%, 0);
}

.intercept-frame {
  flex: 0 0 auto;
  width: 58px;
  height: 58px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(120, 255, 150, 0.4);
  background: radial-gradient(circle, rgba(60, 255, 120, 0.12), transparent 75%);
}

.intercept-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  mix-blend-mode: screen;
  filter: contrast(1.1) brightness(1.05);
}

.intercept-text {
  color: #9effb0;
  font-size: 0.95rem;
  line-height: 1.35;
  letter-spacing: 0.03em;
  text-shadow: 0 0 8px rgba(60, 255, 120, 0.45);
}

@keyframes intercept-jitter {
  0%, 100% { transform: translate(-50%, 0); }
  25% { transform: translate(calc(-50% - 2px), 1px); }
  50% { transform: translate(calc(-50% + 2px), -1px); }
  75% { transform: translate(calc(-50% - 1px), 0); }
}

.intercept.urgent {
  border-color: #ff5a48;
  box-shadow: 0 0 40px rgba(255, 90, 72, 0.4), inset 0 0 22px rgba(0, 0, 0, 0.6);
  animation: intercept-jitter 0.22s linear infinite;
}

.intercept.urgent .intercept-text {
  color: #ff8c7a;
  text-shadow: 0 0 9px rgba(255, 90, 72, 0.6);
}

/* ===================================================================
   Field notebook (side drawer): log frequencies, the cipher, fragments
   =================================================================== */
.notes-tab {
  position: fixed;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 9px;
  border: 1px solid rgba(124, 223, 143, 0.3);
  border-right: none;
  border-radius: 12px 0 0 12px;
  background: rgba(8, 18, 10, 0.85);
  color: var(--phosphor);
  font-family: inherit;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  cursor: pointer;
  writing-mode: vertical-rl;
  box-shadow: -4px 0 16px rgba(0, 0, 0, 0.45);
  transition: background 0.2s, box-shadow 0.2s;
}

.notes-tab:hover {
  background: rgba(14, 30, 16, 0.95);
  box-shadow: -4px 0 22px rgba(124, 223, 143, 0.18);
}

.notes-tab-icon {
  writing-mode: horizontal-tb;
  font-size: 1rem;
}

.notes-tab.hidden { display: none; }

.notes-panel {
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  width: min(330px, 88vw);
  z-index: 46;
  transform: translateX(100%);
  transition: transform 0.32s cubic-bezier(0.4, 0.9, 0.3, 1);
  background: linear-gradient(180deg, #15120b 0%, #0b0a06 100%);
  border-left: 1px solid rgba(124, 223, 143, 0.25);
  box-shadow: -14px 0 44px rgba(0, 0, 0, 0.6);
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 16px 16px 22px;
  color: var(--phosphor);
}

.notes-panel.open { transform: translateX(0); }

.notes-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.9rem;
  letter-spacing: 0.28em;
  color: #ecc794;
  border-bottom: 1px solid rgba(124, 223, 143, 0.2);
  padding-bottom: 10px;
}

.notes-close {
  background: none;
  border: none;
  color: #d9b886;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
}

.notes-close:hover { color: #fff; }

.notes-section { display: flex; flex-direction: column; gap: 7px; }
.notes-grow { flex: 1; min-height: 0; }

.notes-label {
  font-size: 0.66rem;
  letter-spacing: 0.24em;
  color: rgba(124, 223, 143, 0.65);
}

.notes-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 30vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
  scrollbar-width: thin;
  scrollbar-color: rgba(124, 223, 143, 0.25) transparent;
}

.notes-list li {
  display: flex;
  gap: 8px;
  font-size: 0.8rem;
  color: rgba(206, 240, 214, 0.9);
  padding: 4px 8px;
  border-radius: 5px;
  background: rgba(124, 223, 143, 0.05);
  border-left: 2px solid rgba(124, 223, 143, 0.4);
}

.notes-list li .nf-freq {
  color: #ffd27c;
  font-variant-numeric: tabular-nums;
  flex: 0 0 auto;
}

.notes-list li.nf-fragment { border-left-color: #d8fffb; }
.notes-list li.nf-cipher { border-left-color: #58ff8f; }
.notes-list .nf-empty {
  border: none;
  background: none;
  opacity: 0.45;
  font-style: italic;
}

.notes-cipher {
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  color: #b8ffc8;
  background: rgba(2, 12, 6, 0.7);
  border: 1px solid rgba(88, 255, 143, 0.25);
  border-radius: 6px;
  padding: 8px 10px;
  white-space: pre-line;
  min-height: 1.4em;
}

.notes-cipher .nc-code { color: #ffd27c; text-shadow: 0 0 8px rgba(255, 210, 124, 0.4); }

.notes-scratch {
  flex: 1;
  min-height: 90px;
  resize: none;
  background: rgba(2, 12, 6, 0.6);
  border: 1px solid rgba(124, 223, 143, 0.2);
  border-radius: 6px;
  padding: 10px;
  color: #cdeede;
  font-family: inherit;
  font-size: 0.86rem;
  line-height: 1.5;
  outline: none;
}

.notes-scratch:focus { border-color: rgba(124, 223, 143, 0.5); }

/* a freshly-logged row flashes */
@keyframes note-flash {
  0% { background: rgba(124, 223, 143, 0.4); }
  100% { background: rgba(124, 223, 143, 0.05); }
}
.notes-list li.just-added { animation: note-flash 1.1s ease-out; }

/* ===================================================================
   Responsive
   =================================================================== */
@media (max-width: 860px) {
  .screen-main {
    grid-template-columns: 1fr 1fr;
  }
  .panel-left {
    grid-column: 1 / -1;
    order: 2;
  }
  .panel-center { order: 1; }
  .panel-right { order: 1; }
  .transmission { height: 220px; }
  .tv-screen { min-height: 0; }
  .knob-housing { width: 124px; height: 124px; }
  .tune-knob { width: 96px; height: 96px; }
  .knob-face { inset: 14px; }
}

@media (max-width: 560px) {
  body { padding: 0.4rem; }
  .tv-cabinet { padding: 12px 10px 8px; border-radius: 18px; }
  .screen-content { padding: 14px 12px 12px; }
  .screen-main {
    grid-template-columns: 1fr;
  }
  .panel-right { order: 0; }
  .announcer-frame { max-width: 200px; }
  .screen-header h1 { letter-spacing: 0.3em; }
  .static-toggle .state-on,
  .static-toggle .state-off { display: none; }
  .bezel {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 14px;
  }
  .bezel-mid { order: 3; }
  .bezel-right { order: 2; justify-content: center; gap: 24px; }
  .speaker-grill { display: none; }
  .knob-housing { width: 112px; height: 112px; }
  .tune-knob { width: 86px; height: 86px; }
  .knob-face { inset: 12px; }
  .knob-marker { height: 18px; top: 5px; }
}

/* ===================================================================
   Accessibility / degradation
   =================================================================== */
@media (prefers-reduced-motion: reduce) {
  .transmission.active,
  .tuning-lamp.jingle,
  .tv-screen.glitching .screen-content,
  .freq-display.just-locked,
  .gauge-svg.expanding,
  .announcer-frame.visible .announcer-img,
  .announcer-frame.talking .announcer-img,
  .announcer-frame.swapping .announcer-img,
  .talk-bars.talking i,
  .speech-bubble span,
  .boot-host,
  .boot-title,
  .power-btn,
  .portal-ring-1,
  .portal-ring-2,
  .portal-ring-3,
  .portal-sweep,
  .boot-strip span,
  .nebula-a,
  .nebula-b,
  .tv-screen.powering-on {
    animation: none;
  }
  .guide-btn::after,
  .intercept.urgent,
  .notes-list li.just-added {
    animation: none;
  }
  .noise-canvas,
  .galaxy {
    display: none;
  }
}