* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #0e0e11;
  color: #e0e0e0;
  font-family: Arial, Helvetica, sans-serif;
  overflow-x: hidden;
}

header {
  background: #15151a;
  padding: 12px;
  text-align: center;
  font-weight: bold;
  letter-spacing: 2px;
  border-bottom: 1px solid #2a2a2a;
}

.icon-logo {
  width: 88px;
  height: 88px;
  margin-bottom: 8px;
}

.mixer {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 14px;
  padding: 16px;
}

.channel {
  background: #1a1a1f;
  border-radius: 8px;
  padding: 10px 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 160px;
  margin: 0 auto;
}

.channel-name {
  font-size: 11px;
  font-weight: bold;
  color: #f1c40f;
  margin-bottom: 4px;
  text-align: center;
}

.volume {
  font-size: 15px;
  font-weight: bold;
  color: #1abc9c;
  margin-bottom: 6px;

  /* ESSENCIAL PARA NÃO SOBREPOR */
  height: 18px;
  line-height: 18px;
  text-align: center;
  font-family: "Courier New", monospace;
  user-select: none;
}


.fader {
  writing-mode: bt-lr;
  -webkit-appearance: slider-vertical;
  width: 16px;
  height: 180px;
}

.fader:disabled {
  opacity: 0.4;
}

@media (pointer: coarse) {
  .fader {
    width: 24px;
  }

  .fader::-webkit-slider-thumb {
    width: 28px;
    height: 28px;
  }
}

.buttons {
  display: flex;
  gap: 6px;
  margin-top: 6px;
}

button {
  width: 42px;
  padding: 6px 0;
  font-size: 11px;
  font-weight: bold;
  border: none;
  border-radius: 4px;
  background: #2a2a2a;
  color: #aaa;
  cursor: pointer;
}

button.active.mute {
  background: #c0392b;
  color: #fff;
}

button.active.solo {
  background: #f1c40f;
  color: #000;
}