/* VU Meter on desk */
.vu-meter {
  position: absolute;
  top: 10px;
  width: 120px;
  height: 60px;
  z-index: 8;

  @include media-up(md) {
    left: 50%;
  }
}

.vu-meter-body {
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, #2a2a2a 0%, #1a1a1a 100%);
  border: 2px solid #333;
  border-radius: 4px;
  box-shadow:
    0 4px 12px rgba(0, 0, 0, 0.7),
    inset 0 2px 4px rgba(255, 255, 255, 0.1),
    inset 0 -2px 4px rgba(0, 0, 0, 0.3);
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.vu-meter-screen {
  flex: 1;
  background: #0a0a0a;
  border-radius: 2px;
  padding: 6px 4px;
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.8);
}

.vu-bars {
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  height: 100%;
  gap: 2px;

  &.crt {
    position: relative;
  }
}

.vu-bar {
  flex: 1;
  background: linear-gradient(
    to top,
    #0f0 0%,
    #0f0 60%,
    #ff0 60%,
    #ff0 85%,
    #f00 85%,
    #f00 100%
  );
  border-radius: 1px;
  box-shadow:
    0 0 4px rgba(0, 255, 0, 0.6),
    inset 0 0 2px rgba(255, 255, 255, 0.2);
  animation: vu-bounce 1.5s ease-in-out infinite;
  animation-delay: var(--delay);
  height: var(--height);
  min-height: 10%;
}

@keyframes vu-bounce {
  0%,
  100% {
    height: var(--height);
    filter: brightness(1);
  }
  25% {
    height: calc(var(--height) * 0.6);
    filter: brightness(0.8);
  }
  50% {
    height: calc(var(--height) * 1.2);
    filter: brightness(1.2);
  }
  75% {
    height: calc(var(--height) * 0.8);
    filter: brightness(0.9);
  }
}

/* Peak indicator line */
.vu-peak-line {
  position: absolute;
  top: 15%;
  left: 4px;
  right: 4px;
  height: 1px;
  background: #f00;
  opacity: 0.6;
  box-shadow: 0 0 3px #f00;
  animation: peak-pulse 2s ease-in-out infinite;
}

@keyframes peak-pulse {
  0%,
  100% {
    opacity: 0.6;
    top: 15%;
  }
  50% {
    opacity: 0.3;
    top: 25%;
  }
}

/* LED indicators */
.vu-leds {
  display: flex;
  justify-content: center;
  gap: 8px;
}

.vu-led {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.5);
}

.vu-led.green {
  background: #0f0;
  box-shadow:
    0 0 6px #0f0,
    inset 0 1px 2px rgba(0, 0, 0, 0.5);
  animation: led-blink-green 2s ease-in-out infinite;
}

.vu-led.yellow {
  background: #880;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.5);
  animation: led-blink-yellow 2s ease-in-out infinite;
}

.vu-led.red {
  background: #400;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.5);
  animation: led-blink-red 2s ease-in-out infinite;
}

@keyframes led-blink-green {
  0%,
  100% {
    background: #0f0;
    box-shadow:
      0 0 6px #0f0,
      inset 0 1px 2px rgba(0, 0, 0, 0.5);
  }
  50% {
    background: #0a0;
    box-shadow:
      0 0 3px #0a0,
      inset 0 1px 2px rgba(0, 0, 0, 0.5);
  }
}

@keyframes led-blink-yellow {
  0%,
  40%,
  100% {
    background: #880;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.5);
  }
  50%,
  60% {
    background: #ff0;
    box-shadow:
      0 0 6px #ff0,
      inset 0 1px 2px rgba(0, 0, 0, 0.5);
  }
}

@keyframes led-blink-red {
  0%,
  85%,
  100% {
    background: #400;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.5);
  }
  90%,
  95% {
    background: #f00;
    box-shadow:
      0 0 6px #f00,
      inset 0 1px 2px rgba(0, 0, 0, 0.5);
  }
}