:root {
  --bg: #1c1a10;
  --chassis: #26231a;
  --panel: #d0c49a;
  --panel-2: #c4b888;
  --text: #18120a;
  --muted: #3e2e14;
  --line: #9a8a68;
  --line-dark: #3c3422;
  --red: #c04020;
  --amber: #a06800;
  --amber-lit: #c88010;
  --green: #3a6028;
  --chrome: #8c8478;
  --readout-bg: #080600;
  --readout-fg: #c08000;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: 'Courier New', Courier, monospace;
}

button,
input {
  font: inherit;
}

/* CHASSIS */
.machine {
  width: min(900px, calc(100vw - 24px));
  margin: 16px auto;
  padding: 14px 14px 18px;
  background: var(--chassis);
  border: 2px solid #3c3422;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    0 8px 32px rgba(0, 0, 0, 0.7),
    0 2px 4px rgba(0, 0, 0, 0.5);
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h2 {
  font-size: 0.72rem;
  font-weight: 700;
}

/* NAMEPLATE */
.nameplate {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px 7px;
  margin-bottom: 10px;
  background: var(--panel);
  border: 2px solid var(--chrome);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.55),
    inset 0 -1px 0 rgba(0, 0, 0, 0.12),
    2px 2px 0 rgba(0, 0, 0, 0.3);
}

.nameplate-id {
  font-size: 0.65rem;
  font-weight: 900;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

.nameplate-title {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--text);
}

/* STATUS READOUT */
.status {
  width: 100%;
  margin-bottom: 10px;
  padding: 6px 10px;
  background: var(--readout-bg);
  border: 2px solid var(--line-dark);
  box-shadow:
    inset 0 2px 8px rgba(0, 0, 0, 0.9),
    inset 0 0 20px rgba(0, 0, 0, 0.5);
  color: var(--readout-fg);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-shadow: 0 0 10px rgba(192, 128, 0, 0.6), 0 0 22px rgba(192, 128, 0, 0.2);
}

/* TRANSPORT */
.transport {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 10px;
}

.transport-button {
  min-height: 46px;
  padding: 8px 12px;
  background: var(--panel);
  border: 2px solid var(--chrome);
  border-bottom-color: #5c5448;
  border-right-color: #6a6258;
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.55),
    inset 0 -1px 0 rgba(0, 0, 0, 0.1),
    2px 2px 0 rgba(0, 0, 0, 0.35);
  transition: box-shadow 80ms ease, transform 80ms ease, background 60ms;
}

.transport-button:hover:not(:disabled) {
  background: #d8ce9e;
}

.transport-button:active:not(:disabled) {
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.25);
  transform: translate(1px, 1px);
}

.transport-button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.process:not(:disabled) {
  color: var(--amber);
  border-color: var(--amber);
  border-bottom-color: #5a3c00;
  border-right-color: #6a4800;
}

.play:not(:disabled) {
  color: var(--green);
  border-color: var(--green);
  border-bottom-color: #1e3614;
  border-right-color: #283c1c;
}

.play.is-playing {
  background: var(--green);
  color: var(--panel);
  border-color: #2a4820;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.15),
    2px 2px 0 rgba(0, 0, 0, 0.35);
}

.save:not(:disabled) {
  color: var(--muted);
}

/* TRACKS */
.tracks {
  display: grid;
  gap: 7px;
  margin-bottom: 10px;
}

.track {
  border: 2px solid var(--chrome);
  border-bottom-color: #5c5448;
  border-right-color: #6a6258;
  background: var(--panel);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.4),
    2px 2px 0 rgba(0, 0, 0, 0.3);
}

.track-head {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 5px 8px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
}

.track-record {
  min-width: 72px;
  padding: 5px 8px;
  border: 2px solid var(--chrome);
  border-bottom-color: #5c5448;
  background: var(--panel);
  color: var(--text);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.5),
    1px 1px 0 rgba(0, 0, 0, 0.3);
}

.track-action {
  min-width: 48px;
  padding: 5px 7px;
  border: 2px solid var(--chrome);
  border-bottom-color: #5c5448;
  background: var(--panel);
  color: var(--text);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  line-height: 1.2;
  text-align: center;
  cursor: pointer;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.5),
    1px 1px 0 rgba(0, 0, 0, 0.3);
}

.track-record:hover:not(:disabled),
.track-action:hover:not(:disabled) {
  background: #d8ce9e;
  filter: none;
}

.track-record:active:not(:disabled),
.track-action:active:not(:disabled) {
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.22);
  transform: translate(1px, 1px);
}

.track-record:disabled,
.track-action:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.track-file {
  display: none;
}

.track-record.is-recording {
  background: var(--red);
  border-color: #e06040;
  color: #f0e8d8;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.2),
    1px 1px 0 rgba(0, 0, 0, 0.3),
    0 0 8px rgba(192, 64, 32, 0.4);
}

.track-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.track-name {
  font-weight: 700;
  color: var(--text);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.track-meta {
  color: var(--muted);
  font-size: 0.64rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.track-head .time {
  margin: 0;
  font-size: 0.64rem;
  color: var(--muted);
  letter-spacing: 0.1em;
}

.track-wave {
  display: block;
  width: 100%;
  height: 52px;
  background: #ddd4b4;
}

/* NUMBER INPUT — readout display */
.number-input {
  width: 100%;
  padding: 5px 7px;
  border: 2px solid var(--line-dark);
  background: var(--readout-bg);
  color: var(--readout-fg);
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.82rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  text-align: right;
  text-shadow: 0 0 6px rgba(192, 128, 0, 0.5);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.8);
}

.number-input::-webkit-inner-spin-button,
.number-input::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.number-input[type="number"] {
  -moz-appearance: textfield;
}

/* CONTROLS */
.controls {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 7px;
  margin-bottom: 10px;
}

.control {
  display: grid;
  gap: 6px;
  padding: 8px;
  border: 2px solid var(--chrome);
  border-bottom-color: #5c5448;
  border-right-color: #6a6258;
  background: var(--panel);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.4),
    2px 2px 0 rgba(0, 0, 0, 0.3);
}

.control-head {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  color: var(--muted);
  font-size: 0.65rem;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

output {
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

/* RANGE SLIDERS — fader style */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 10px;
  background: #a8986c;
  border: 1px solid #8a7a52;
  border-radius: 0;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.35);
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 22px;
  background: var(--panel);
  border: 2px solid var(--chrome);
  border-bottom-color: #5c5448;
  border-radius: 2px;
  box-shadow: 1px 1px 0 rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.55);
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 22px;
  background: var(--panel);
  border: 2px solid var(--chrome);
  border-radius: 2px;
  box-shadow: 1px 1px 0 rgba(0, 0, 0, 0.3);
  cursor: pointer;
}

/* WAVEFORMS */
.waveforms {
  display: grid;
  gap: 7px;
}

.wave-panel {
  border: 2px solid var(--chrome);
  border-bottom-color: #5c5448;
  border-right-color: #6a6258;
  background: var(--panel);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.4),
    2px 2px 0 rgba(0, 0, 0, 0.3);
}

.wave-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 5px 8px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--muted);
}

.wave-head h2 {
  color: var(--text);
  letter-spacing: 0.2em;
}

.wave-head span {
  font-size: 0.66rem;
  font-variant-numeric: tabular-nums;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

canvas {
  display: block;
  width: 100%;
  background: #ddd4b4;
}

#outputWave {
  height: 70px;
}

/* TIME */
.time {
  display: block;
  color: var(--muted);
  font-size: 0.64rem;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: 0.1em;
}

@media (max-width: 780px) {
  .transport,
  .controls {
    grid-template-columns: 1fr;
  }

  .transport-button {
    min-height: 38px;
  }
}