/* Knobs, faders, meters, buttons, selects, icons (widgets.js). */

/* ---------------------------------------------------------------- buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 28px;
  padding: 0 11px;
  border-radius: 8px;
  border: 1px solid var(--line-2);
  background: var(--lacquer-hi);
  box-shadow:
    var(--inset),
    0 2px 6px rgba(0, 0, 0, 0.35);
  color: var(--champagne);
  font-weight: 600;
  font-size: 11.5px;
  letter-spacing: 0.04em;
  transition:
    border-color 0.15s,
    box-shadow 0.15s,
    color 0.15s,
    background 0.15s;
  white-space: nowrap;
}
.btn:hover {
  border-color: var(--line-3);
  color: var(--gold-hi);
  box-shadow:
    var(--inset),
    0 0 0 1px rgba(212, 175, 55, 0.08),
    0 4px 14px rgba(0, 0, 0, 0.45);
}
.btn:active {
  transform: translateY(0.5px);
}
.btn.on,
.btn.gold {
  background: var(--metal);
  color: #251a06;
  border-color: rgba(255, 230, 160, 0.7);
  text-shadow: 0 1px 0 rgba(255, 245, 210, 0.5);
  box-shadow:
    0 0 16px rgba(212, 175, 55, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
}
.btn.ghost {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
  color: var(--muted);
}
.btn.ghost:hover {
  color: var(--gold-hi);
  background: rgba(212, 175, 55, 0.06);
}
.btn.small {
  height: 22px;
  padding: 0 8px;
  font-size: 10.5px;
  border-radius: 6px;
}
.btn.danger:hover {
  color: var(--danger);
  border-color: rgba(224, 112, 126, 0.5);
}
.btn.icon {
  width: 30px;
  padding: 0;
}
.btn.icon.small {
  width: 22px;
}
.btn[disabled] {
  opacity: 0.4;
  pointer-events: none;
}

.glyph {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.glyph-play path,
.glyph-stop path,
.glyph-pause path,
.glyph-record path,
.glyph-spark path {
  fill: currentColor;
  stroke: none;
}
.btn.small .glyph {
  width: 13px;
  height: 13px;
}

.btn.play {
  width: 40px;
  height: 34px;
  border-radius: 10px;
}
.btn.play .glyph {
  width: 18px;
  height: 18px;
}
.btn.play.on {
  color: #1f1504;
}
.btn.stop {
  width: 34px;
  height: 34px;
  border-radius: 10px;
}
.btn.metro {
  width: 34px;
  height: 34px;
  border-radius: 10px;
}
.btn.metro.on {
  color: var(--gold-hi);
  border-color: var(--gold-mid);
  box-shadow: 0 0 10px rgba(212, 175, 55, 0.35);
}
.btn.rec {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  color: var(--rose);
}
.btn.rec.armed {
  color: #fff;
  background: radial-gradient(circle at 50% 40%, #e2717f, #8e2336);
  border-color: rgba(255, 170, 180, 0.7);
  box-shadow: 0 0 18px rgba(224, 112, 126, 0.6);
  animation: pulse 1.2s ease-in-out infinite;
}
@keyframes pulse {
  50% {
    box-shadow: 0 0 6px rgba(224, 112, 126, 0.3);
  }
}

.seg {
  display: inline-flex;
  padding: 2px;
  border-radius: 9px;
  background: var(--ob-0);
  border: 1px solid var(--line);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.7);
}
.seg .btn {
  height: 26px;
  border-color: transparent;
  background: transparent;
  box-shadow: none;
  color: var(--muted);
  border-radius: 7px;
}
.seg .btn:hover {
  color: var(--champagne);
}
.seg .btn.on {
  background: var(--metal);
  color: #231804;
  box-shadow: 0 0 12px rgba(212, 175, 55, 0.3);
}

/* ---------------------------------------------------------------- LCD */

.lcd {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 92px;
  height: 38px;
  padding: 3px 10px 4px;
  border-radius: 8px;
  background:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.015) 0 1px, transparent 1px 3px), radial-gradient(120% 140% at 50% 0%, #1a1510 0%, #07060a 70%);
  border: 1px solid rgba(212, 175, 55, 0.22);
  box-shadow:
    inset 0 2px 8px rgba(0, 0, 0, 0.85),
    0 1px 0 rgba(255, 240, 200, 0.05);
  cursor: ns-resize;
}
.lcd.static {
  cursor: default;
}
/* An LCD being typed into (the tempo, on a click). */
.lcd.editing {
  cursor: text;
  border-color: var(--gold);
}
.lcd-input {
  width: 6.8ch;
  padding: 0;
  border: 0;
  outline: 0;
  background: transparent;
  font: inherit;
  color: inherit;
  letter-spacing: inherit;
  text-shadow: inherit;
  caret-color: var(--gold-hi);
}
.lcd-label {
  font: 600 8.5px/1 var(--sans);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--dim);
}
.lcd-value {
  font: 500 17px/1.15 var(--mono);
  color: var(--gold-hi);
  text-shadow:
    0 0 10px rgba(245, 214, 120, 0.55),
    0 0 2px rgba(255, 230, 170, 0.8);
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.lcd-value small {
  font-size: 10px;
  color: var(--muted);
  text-shadow: none;
  margin-left: 3px;
}

/* ---------------------------------------------------------------- knobs */

.knob {
  --v: 0.5;
  --size: 30px;
  position: relative;
  width: var(--size);
  height: var(--size);
  flex: none;
  cursor: ns-resize;
  touch-action: none;
}
.knob-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(
    from 225deg,
    var(--gold-hi) 0deg,
    var(--gold) calc(var(--v) * 270deg),
    rgba(255, 255, 255, 0.07) calc(var(--v) * 270deg),
    rgba(255, 255, 255, 0.07) 270deg,
    transparent 270deg
  );
  -webkit-mask: radial-gradient(circle, transparent 57%, #000 59%);
  mask: radial-gradient(circle, transparent 57%, #000 59%);
  filter: drop-shadow(0 0 3px rgba(212, 175, 55, 0.35));
}
.knob-cap {
  position: absolute;
  inset: 17%;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 28%, rgba(255, 240, 210, 0.22), transparent 45%), conic-gradient(from 0deg, #2c2732, #17141b, #2c2732, #17141b, #2c2732);
  border: 1px solid rgba(212, 175, 55, 0.35);
  box-shadow:
    0 2px 5px rgba(0, 0, 0, 0.7),
    inset 0 1px 1px rgba(255, 240, 210, 0.15);
  transform: rotate(calc(-135deg + var(--v) * 270deg));
}
.knob-dot {
  position: absolute;
  left: 50%;
  top: 8%;
  width: 2px;
  height: 32%;
  margin-left: -1px;
  border-radius: 2px;
  background: var(--gold-hi);
  box-shadow: 0 0 4px rgba(245, 226, 166, 0.9);
}
.knob:hover .knob-cap {
  border-color: var(--gold-hi);
}
.knob.small {
  --size: 22px;
}
.knob.large {
  --size: 44px;
}
.knob-label {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  font-size: 9px;
  color: var(--muted);
  white-space: nowrap;
  margin-top: 2px;
}

.param {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  width: 70px;
}
.param .knob {
  --size: 38px;
}
.param-name {
  font: 600 9.5px/1 var(--sans);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: center;
}
.param-value {
  font: 500 10.5px/1 var(--mono);
  color: var(--champagne);
}

/* ---------------------------------------------------------------- faders & meters */

.fader {
  --v: 0.8;
  position: relative;
  width: 26px;
  height: 100%;
  min-height: 90px;
  cursor: ns-resize;
  touch-action: none;
}
.fader-track {
  position: absolute;
  left: 50%;
  top: 12px;
  bottom: 12px;
  width: 4px;
  margin-left: -2px;
  border-radius: 3px;
  background: linear-gradient(180deg, #050406, #1c1920);
  box-shadow:
    inset 0 1px 2px rgba(0, 0, 0, 0.9),
    0 0 0 1px rgba(212, 175, 55, 0.12);
}
.fader-cap {
  position: absolute;
  left: 1px;
  right: 1px;
  height: 22px;
  top: calc(12px + (1 - var(--v)) * (100% - 24px) - 11px);
  border-radius: 5px;
  background: var(--metal);
  box-shadow:
    0 3px 8px rgba(0, 0, 0, 0.7),
    0 0 10px rgba(212, 175, 55, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(90, 64, 18, 0.9);
}
.fader-cap::after {
  content: "";
  position: absolute;
  left: 3px;
  right: 3px;
  top: 50%;
  height: 2px;
  margin-top: -1px;
  background: rgba(40, 26, 4, 0.7);
  border-radius: 1px;
}

.meter {
  display: flex;
  gap: 2px;
  height: 100%;
  min-height: 90px;
  padding: 12px 0;
}
.meter-bar {
  position: relative;
  width: 5px;
  height: 100%;
  border-radius: 2px;
  background: #07060a;
  box-shadow: inset 0 0 0 1px rgba(212, 175, 55, 0.1);
  overflow: hidden;
}
.meter-fill {
  position: absolute;
  inset: 0;
  transform-origin: bottom;
  background: linear-gradient(0deg, #2f8f78 0%, #6fcf9f 45%, #e6cd7a 72%, #e79a5d 88%, #e0606f 100%);
  transition: transform 60ms linear;
}
.meter-fill.clip {
  box-shadow: 0 -2px 6px rgba(224, 96, 111, 0.9);
}

.led-meter {
  position: relative;
  width: 36px;
  height: 4px;
  border-radius: 2px;
  background: #07060a;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(212, 175, 55, 0.1);
}
.led-fill {
  position: absolute;
  inset: 0;
  transform-origin: left;
  background: linear-gradient(90deg, #3a9c83, #e6cd7a 75%, #e0606f);
  transition: transform 60ms linear;
}