@import url("https://fonts.googleapis.com/css2?family=Press+Start+2P&family=VT323&display=swap");

:root {
  --fh-bg: #03040b;
  --fh-panel: rgba(8, 10, 20, 0.96);
  --fh-border: #2c4566;
  --fh-text: #d9f7ff;
  --fh-soft: #8bb5c4;
  --fh-cyan: #87e8ff;
  --fh-amber: #ffd486;
  --fh-shadow: rgba(0, 0, 0, 0.48);
  --fh-font-display: "Press Start 2P", "Courier New", monospace;
  --fh-font-body: "VT323", "Courier New", monospace;
}

.falling-hall-app *,
.falling-hall-page {
  box-sizing: border-box;
}

.falling-hall-app {
  color: var(--fh-text);
  font-family: var(--fh-font-body);
}

.falling-hall-app .shell {
  width: 100%;
}

.falling-hall-app .hero {
  margin-bottom: 28px;
}

.falling-hall-app .hero .eyebrow,
.falling-hall-app .panel-label,
.falling-hall-app .frame-bar,
.falling-hall-app .meter-label {
  font-family: var(--fh-font-body);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.falling-hall-app .hero .eyebrow {
  margin: 0 0 10px;
  color: var(--fh-amber);
}

.falling-hall-app h2 {
  margin: 0;
  font-family: var(--fh-font-display);
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: 0.05em;
}

.falling-hall-app .lede {
  max-width: 42rem;
  margin: 16px 0 0;
  font-size: 1.52rem;
  color: var(--fh-soft);
}

.falling-hall-app .stage {
  display: grid;
  grid-template-columns: minmax(0, 760px) minmax(220px, 1fr);
  gap: 22px;
  align-items: start;
}

.falling-hall-app .frame,
.falling-hall-app .sidepanel {
  border: 1px solid var(--fh-border);
  background:
    radial-gradient(circle at top, rgba(135, 232, 255, 0.08), transparent 36%),
    linear-gradient(180deg, rgba(255, 212, 134, 0.04), transparent 30%),
    var(--fh-panel);
  box-shadow:
    0 1rem 2rem var(--fh-shadow),
    inset 0 0 0.75rem rgba(135, 232, 255, 0.05);
}

.falling-hall-app .frame {
  display: grid;
  gap: 12px;
  padding: 14px;
}

.falling-hall-app .frame-bar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 2px 6px 10px;
  color: var(--fh-soft);
}

.falling-hall-app .canvas-wrap {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(135, 232, 255, 0.22);
  background:
    radial-gradient(circle at center, rgba(14, 20, 35, 0.55), transparent 58%),
    #000000;
}

.falling-hall-app canvas {
  display: block;
  width: 100%;
  height: auto;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.falling-hall-app .scanlines,
.falling-hall-app .vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.falling-hall-app .scanlines {
  background:
    repeating-linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.03) 0,
      rgba(255, 255, 255, 0.03) 1px,
      rgba(0, 0, 0, 0) 1px,
      rgba(0, 0, 0, 0) 3px
    );
  mix-blend-mode: screen;
  opacity: 0.44;
}

.falling-hall-app .vignette {
  background:
    radial-gradient(circle at center, rgba(0, 0, 0, 0) 36%, rgba(0, 0, 0, 0.54) 100%),
    radial-gradient(circle at center, rgba(255, 212, 134, 0.08), transparent 48%);
}

.falling-hall-app .transport-panel {
  display: grid;
  gap: 8px;
}

.falling-hall-app .song-button {
  width: 100%;
  border: 1px solid var(--fh-amber);
  background:
    linear-gradient(180deg, rgba(255, 212, 134, 0.1), rgba(255, 212, 134, 0.04)),
    rgba(8, 10, 20, 0.92);
  color: var(--fh-amber);
  padding: 0.95rem 1rem 0.85rem;
  font-family: var(--fh-font-display);
  font-size: 0.84rem;
  letter-spacing: 0.08em;
  text-align: left;
  cursor: pointer;
}

.falling-hall-app .song-button:hover,
.falling-hall-app .song-button:focus-visible {
  background:
    linear-gradient(180deg, rgba(255, 212, 134, 0.2), rgba(255, 212, 134, 0.08)),
    rgba(10, 13, 25, 0.98);
  color: #fff0c4;
  outline: none;
}

.falling-hall-app .transport-state {
  margin: 0;
  font-size: 1.06rem;
  color: var(--fh-soft);
}

.falling-hall-app .telemetry-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.falling-hall-app .telemetry-card {
  display: grid;
  gap: 6px;
  padding: 12px;
  border: 1px solid rgba(135, 232, 255, 0.18);
  background: rgba(3, 5, 10, 0.78);
}

.falling-hall-app .telemetry-card strong {
  font-family: var(--fh-font-display);
  font-size: 0.92rem;
  line-height: 1.4;
}

.falling-hall-app .panel-label {
  color: var(--fh-cyan);
}

.falling-hall-app .meter {
  position: relative;
  overflow: hidden;
  height: 8px;
  border: 1px solid rgba(135, 232, 255, 0.18);
  background: rgba(3, 5, 10, 0.96);
}

.falling-hall-app .meter > span {
  display: block;
  width: 100%;
  height: 100%;
  transform-origin: left center;
  transform: scaleX(0);
  background: linear-gradient(90deg, var(--fh-cyan), #b9effc);
  box-shadow: 0 0 0.4rem rgba(135, 232, 255, 0.42);
}

.falling-hall-app .danger-meter > span {
  background: linear-gradient(90deg, var(--fh-cyan), var(--fh-amber), #ff8a66);
  box-shadow: 0 0 0.6rem rgba(255, 212, 134, 0.5);
}

.falling-hall-app .sidepanel {
  display: grid;
  gap: 18px;
  padding: 18px;
  align-content: start;
}

.falling-hall-app .sidepanel p {
  margin: 0 0 0.8rem;
}

.falling-hall-app .control-list {
  margin: 0;
  padding-left: 1.2rem;
}

.falling-hall-app .control-list li + li {
  margin-top: 0.4rem;
}

.falling-hall-app code {
  background: rgba(255, 212, 134, 0.08);
}

@media (max-width: 1040px) {
  .falling-hall-app .stage {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .falling-hall-app .telemetry-grid {
    grid-template-columns: 1fr;
  }

  .falling-hall-app .hero .eyebrow,
  .falling-hall-app .panel-label,
  .falling-hall-app .frame-bar {
    font-size: 0.72rem;
  }

  .falling-hall-app .frame {
    padding: 12px;
  }

  .falling-hall-app .sidepanel {
    padding: 16px;
    font-size: 1.2rem;
    line-height: 1.28;
  }

  .falling-hall-app .control-list {
    padding-left: 1rem;
  }

  .falling-hall-app .control-list li + li {
    margin-top: 0.28rem;
  }

  .falling-hall-app .transport-state {
    font-size: 0.94rem;
  }

  .falling-hall-app .telemetry-card strong {
    font-size: 0.8rem;
  }
}