.tuner {
  color: var(--color-text);
}

.tuner__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
  padding: 14px;
  background: var(--color-bg-outer);
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.tuner__header h1 {
  margin: 0 0 4px;
  line-height: 1.15;
}

.tuner__header p {
  margin: 0;
  color: var(--color-primary-gray);
}

.tuner__button {
  flex: 0 0 auto;
  min-width: 132px;
}

.tuner__controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 12px;
  padding: 12px 14px;
  background: var(--color-bg-outer);
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.tuner__field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: min(100%, 280px);
  color: var(--color-text);
  font-size: 0.9rem;
}

.tuner__field select {
  width: 100%;
  margin: 0;
}

.tuner__instrument-spectrum {
  margin-bottom: 12px;
  padding: 14px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
}

.tuner__instrument-spectrum-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  color: var(--color-primary-gray);
  font-size: 0.88rem;
}

.tuner__instrument-spectrum-header strong {
  color: var(--color-text);
  font-size: 1rem;
}

.tuner__instrument-rail {
  position: relative;
  height: 92px;
  margin: 0 12px;
  border-bottom: 2px solid var(--color-border);
}

.tuner__instrument-tick,
.tuner__instrument-note {
  position: absolute;
  text-align: center;
  transform: translateX(-50%);
}

.tuner__instrument-tick {
  bottom: -1px;
  width: 1px;
  height: 10px;
  background: var(--color-border);
}

.tuner__instrument-tick--octave {
  height: 24px;
  background: var(--color-primary-gray);
  opacity: 0.75;
}

.tuner__instrument-tick::before {
  content: none;
}

.tuner__instrument-note {
  min-width: 44px;
  font-size: 0.82rem;
  font-weight: 700;
  transition: color 0.12s ease, transform 0.12s ease;
}

.tuner__instrument-note::before {
  content: "";
  position: absolute;
  bottom: -7px;
  left: 50%;
  width: 13px;
  height: 13px;
  background: var(--color-bg);
  border: 2px solid var(--color-primary-gray);
  border-radius: 50%;
  transform: translateX(-50%);
  transition: background-color 0.12s ease, border-color 0.12s ease, box-shadow 0.12s ease;
}

.tuner__instrument-note--preset {
  bottom: -1px;
  padding-bottom: 14px;
  color: var(--color-primary-gray);
}

.tuner__instrument-note--preset::before {
  background: var(--color-bg);
  border-color: var(--color-primary-gray);
}

.tuner__instrument-note--current {
  top: 0;
  z-index: 2;
  min-width: 52px;
  padding: 17px 4px 0;
  color: var(--color-primary);
}

.tuner__instrument-note--current[hidden] {
  display: none;
}

.tuner__instrument-note--current::before {
  top: 0;
  bottom: auto;
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 5px rgba(1, 79, 134, 0.14);
}

.tuner__instrument-note--current::after {
  content: "";
  position: absolute;
  top: 39px;
  left: 50%;
  width: 2px;
  height: 35px;
  background: var(--color-primary);
  opacity: 0.45;
  transform: translateX(-50%);
}

.tuner__panel {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(220px, 0.7fr);
  gap: 18px;
  align-items: center;
  padding: 20px;
  background:
    radial-gradient(circle at 50% 12%, rgba(1, 79, 134, 0.09), transparent 42%),
    var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
}

.tuner__gauge {
  position: relative;
  display: flex;
  align-items: center;
  height: 150px;
  padding: 42px 18px 24px;
}

.tuner__rail {
  position: relative;
  width: 100%;
  height: 18px;
  background:
    linear-gradient(90deg, rgba(198, 40, 40, 0.16), transparent 28%, transparent 72%, rgba(198, 40, 40, 0.16)),
    var(--color-bg-outer);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  box-shadow: inset 0 1px 4px rgba(0, 0, 0, 0.12);
}

.tuner__target-zone {
  position: absolute;
  top: -7px;
  bottom: -7px;
  left: calc(50% - 5%);
  width: 10%;
  background: rgba(15, 118, 110, 0.18);
  border: 1px solid rgba(15, 118, 110, 0.34);
  border-radius: 999px;
}

.tuner__center-line {
  position: absolute;
  top: -18px;
  bottom: -18px;
  left: 50%;
  width: 2px;
  background: var(--color-primary);
  opacity: 0.7;
  transform: translateX(-50%);
}

.tuner__marker,
.tuner__ghost {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 22px;
  height: 42px;
  border-radius: 999px;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.tuner__marker {
  z-index: 3;
  background: linear-gradient(180deg, #f2b705, var(--color-primary-dark));
  border: 4px solid var(--color-bg);
  box-shadow: 0 5px 14px rgba(0, 0, 0, 0.24);
  transition: left 0.08s linear;
}

.tuner__ghost {
  z-index: 2;
  width: 14px;
  height: 34px;
  background: var(--color-primary);
  opacity: 0;
  box-shadow: 0 0 0 4px rgba(1, 79, 134, 0.1);
  transition: left 0.08s linear, opacity 0.12s linear;
}

.tuner__scale {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 1;
  color: var(--color-primary-gray);
  font-size: 0.82rem;
  pointer-events: none;
}

.tuner__scale-mark {
  position: absolute;
  min-width: 34px;
  text-align: center;
  transform: translate(-50%, -50%);
}

.tuner__scale-mark--minus-50 {
  top: 24px;
  left: 18px;
  transform: translateX(-50%);
}

.tuner__scale-mark--minus-25 {
  top: 24px;
  left: calc(25% + 9px);
  transform: translateX(-50%);
}

.tuner__scale-mark--zero {
  top: 24px;
  left: 50%;
  color: var(--color-primary);
  font-weight: 700;
  transform: translateX(-50%);
}

.tuner__scale-mark--plus-25 {
  top: 24px;
  left: calc(75% - 9px);
  transform: translateX(-50%);
}

.tuner__scale-mark--plus-50 {
  top: 24px;
  right: 18px;
  transform: translateX(50%);
}

.tuner__readout {
  text-align: center;
}

.tuner__note {
  font-size: clamp(4.5rem, 11vw, 8rem);
  font-weight: 700;
  line-height: 0.95;
  color: var(--color-primary);
  letter-spacing: -0.08em;
}

.tuner__frequency {
  margin-top: 8px;
  font-size: 1.25rem;
  font-weight: 500;
}

.tuner__cents {
  min-height: 26px;
  margin-top: 6px;
  color: var(--color-primary-gray);
}

.tuner__meter {
  grid-column: 1 / -1;
  height: 12px;
  overflow: hidden;
  background: var(--color-bg-outer);
  border: 1px solid var(--color-border);
  border-radius: 999px;
}

.tuner__meter span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), #f2b705);
  border-radius: inherit;
  transition: width 0.08s linear;
}

.tuner--in-tune .tuner__note {
  color: var(--chord-degree-fifth-color, #0f766e);
}

.tuner--inactive .tuner__marker,
.tuner--inactive .tuner__ghost {
  opacity: 0.25;
}

@media (max-width: 760px) {
  .tuner__header,
  .tuner__panel {
    display: flex;
    flex-direction: column;
    align-items: stretch;
  }

  .tuner__button {
    width: 100%;
  }

  .tuner__instrument-spectrum-header {
    flex-direction: column;
    gap: 2px;
  }

  .tuner__gauge {
    height: 132px;
    padding-right: 8px;
    padding-left: 8px;
  }
}