:root {
  color-scheme: dark;
}

body.signal-page {
  background:
    linear-gradient(140deg, rgba(7, 12, 20, 0.98), rgba(13, 33, 39, 0.98) 48%, rgba(31, 23, 34, 0.98)),
    #080c12;
  color: #eef7f2;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  min-height: 100vh;
  overflow: hidden;
}

.signal-nav {
  background: rgba(7, 12, 20, 0.78);
  border-color: rgba(214, 243, 109, 0.28);
  left: 50%;
  margin: 0;
  max-width: calc(100% - 24px);
  position: fixed;
  top: 12px;
  transform: translateX(-50%);
  z-index: 40;
}

.signal-nav a {
  background: rgba(214, 243, 109, 0.16);
  border-color: rgba(214, 243, 109, 0.34);
  color: #eef7f2;
  min-width: 88px;
}

.signal-nav a:hover,
.signal-nav a:focus-visible {
  background: rgba(214, 243, 109, 0.26);
  color: #ffffff;
}

.signal-page .skip-link:not(:focus) {
  height: 1px;
  left: -999px;
  overflow: hidden;
  position: absolute;
  top: auto;
  width: 1px;
}

.signal-shell {
  height: 100vh;
  width: 100vw;
}

.signal-stage {
  height: 100%;
  overflow: hidden;
  position: relative;
  width: 100%;
}

.garden-canvas {
  display: block;
  height: 100%;
  touch-action: none;
  width: 100%;
}

.signal-hud {
  bottom: 18px;
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(4, minmax(78px, 1fr));
  left: 50%;
  max-width: min(760px, calc(100% - 24px));
  position: fixed;
  transform: translateX(-50%);
  width: 100%;
  z-index: 15;
}

.signal-hud div {
  background: rgba(7, 12, 20, 0.72);
  border: 1px solid rgba(179, 220, 205, 0.26);
  border-radius: 8px;
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.28);
  min-width: 0;
  padding: 8px 10px;
}

.signal-hud span,
.signal-kicker {
  color: #b4c9c4;
  display: block;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.signal-hud strong {
  color: #ffffff;
  display: block;
  font-size: clamp(1rem, 2.6vw, 1.45rem);
  line-height: 1.1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.signal-overlay {
  align-items: center;
  background: rgba(4, 8, 14, 0.38);
  display: flex;
  inset: 0;
  justify-content: center;
  padding: 24px;
  position: fixed;
  z-index: 30;
}

.signal-overlay[hidden] {
  display: none;
}

.signal-dialog {
  background: rgba(10, 16, 24, 0.84);
  border: 1px solid rgba(179, 220, 205, 0.28);
  border-radius: 8px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.46);
  max-width: 440px;
  padding: 22px;
  text-align: left;
  width: min(100%, 440px);
}

.signal-dialog h1 {
  color: #ffffff;
  font-size: clamp(2.2rem, 10vw, 4.75rem);
  line-height: 0.95;
  margin: 8px 0 14px;
}

.signal-dialog p {
  color: #d2dfda;
  font-size: 1rem;
  line-height: 1.55;
  margin: 0 0 18px;
}

.signal-action {
  background: #d6f36d;
  border: 0;
  border-radius: 8px;
  color: #14200d;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 900;
  min-height: 46px;
  padding: 0 18px;
}

.signal-action:focus-visible,
.signal-controls button:focus-visible {
  outline: 3px solid #ffffff;
  outline-offset: 3px;
}

.signal-controls {
  bottom: 104px;
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(5, 46px);
  justify-content: center;
  left: 50%;
  position: fixed;
  transform: translateX(-50%);
  z-index: 16;
}

.signal-controls button {
  align-items: center;
  background: rgba(238, 247, 242, 0.14);
  border: 1px solid rgba(238, 247, 242, 0.24);
  border-radius: 8px;
  color: #ffffff;
  cursor: pointer;
  display: inline-flex;
  font-size: 1.3rem;
  font-weight: 900;
  height: 46px;
  justify-content: center;
  line-height: 1;
  touch-action: none;
  width: 46px;
}

.signal-controls button[data-active="true"] {
  background: rgba(214, 243, 109, 0.28);
  border-color: rgba(214, 243, 109, 0.72);
}

@media (hover: hover) and (pointer: fine) {
  .signal-controls {
    opacity: 0.72;
  }
}

@media (max-width: 620px) {
  body.signal-page {
    overflow: hidden;
  }

  .signal-nav {
    top: 8px;
  }

  .signal-hud {
    bottom: 10px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .signal-controls {
    bottom: 126px;
    grid-template-columns: repeat(5, 42px);
  }

  .signal-controls button {
    height: 42px;
    width: 42px;
  }
}