@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Orbitron:wght@400;700;900&display=swap');

* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --orange-bright: #FF6A00;
  --orange-mid: #E85D00;
  --orange-dark: #CC5200;
  --orange-glow: #FF8C33;
  --amber: #FFB800;
  --amber-dim: #CC9300;
  --panel-dark: #1A1A1A;
  --panel-mid: #2A2A2A;
  --panel-light: #3A3A3A;
  --panel-highlight: #4A4A4A;
  --text-bright: #FFDDBB;
  --text-dim: #AA8866;
  --led-green: #00FF66;
  --led-red: #FF3333;
  --screw-color: #888;
  --rail-color: #333;
  --knob-size: 36px;
}

body {
  background: #0D0D0D;
  color: var(--text-bright);
  font-family: 'Share Tech Mono', monospace;
  min-height: 100vh;
  overflow-x: hidden;
  user-select: none;
}

#rack {
  position: relative;
  max-width: 1400px;
  margin: 0 auto;
  padding: 10px 0;
  display: flex;
}

.rack-rail {
  width: 28px;
  background: linear-gradient(180deg, #222 0%, #333 50%, #222 100%);
  border: 1px solid #444;
  flex-shrink: 0;
  background-image: repeating-linear-gradient(
    180deg,
    transparent 0px,
    transparent 18px,
    #444 18px,
    #444 19px
  );
}

#rack-content {
  flex: 1;
  min-width: 0;
}

/* Rack Unit */
.rack-unit {
  display: flex;
  border: 1px solid #444;
  margin-bottom: 2px;
  position: relative;
  background: var(--panel-dark);
}

.rack-unit.global {
  background: linear-gradient(180deg, #1E1E1E 0%, #161616 100%);
  border-color: var(--orange-bright);
  box-shadow: 0 0 15px rgba(255, 106, 0, 0.15);
}

.rack-unit.module {
  background: linear-gradient(180deg, #1C1C1C 0%, #141414 100%);
  border-color: #555;
  transition: border-color 0.3s;
}

.rack-unit.module:hover {
  border-color: var(--orange-glow);
}

.rack-unit.module.powered-off {
  opacity: 0.5;
  filter: grayscale(0.5);
}

.rack-screws {
  width: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  background: var(--panel-mid);
  flex-shrink: 0;
}

.screw {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, #AAA, #555);
  border: 1px solid #444;
  position: relative;
}

.screw::after {
  content: '+';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 10px;
  color: #333;
  font-weight: bold;
}

.rack-panel {
  flex: 1;
  padding: 8px 12px;
  min-width: 0;
}

/* Brand Header */
.brand-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
  border-bottom: 2px solid var(--orange-bright);
  padding-bottom: 6px;
}

.brand-name {
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  font-size: 22px;
  color: var(--orange-bright);
  text-shadow: 0 0 10px rgba(255, 106, 0, 0.5);
  letter-spacing: 3px;
}

.model-name {
  font-family: 'Orbitron', sans-serif;
  font-weight: 400;
  font-size: 12px;
  color: var(--amber);
  letter-spacing: 2px;
}

.sub-label {
  font-size: 9px;
  color: var(--text-dim);
  letter-spacing: 2px;
  margin-left: auto;
}

/* Module Header */
.module-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--orange-dark);
  padding-bottom: 6px;
}

.module-title {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 14px;
  color: var(--orange-bright);
  letter-spacing: 2px;
}

.module-lcd {
  background: #001a00;
  border: 1px solid #333;
  padding: 3px 10px;
  border-radius: 2px;
  min-width: 180px;
  text-align: center;
  box-shadow: inset 0 0 8px rgba(0, 255, 0, 0.1);
}

.lcd-text {
  font-family: 'Share Tech Mono', monospace;
  font-size: 12px;
  color: var(--led-green);
  text-shadow: 0 0 6px rgba(0, 255, 102, 0.5);
}

.power-section {
  margin-left: auto;
  display: flex;
  gap: 6px;
}

/* Controls */
.controls-row {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  flex-wrap: wrap;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.section-label {
  font-family: 'Orbitron', sans-serif;
  font-size: 9px;
  color: var(--orange-bright);
  letter-spacing: 2px;
  text-transform: uppercase;
  border-bottom: 1px solid var(--panel-highlight);
  padding-bottom: 2px;
  margin-bottom: 4px;
}

.knob-row {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  flex-wrap: wrap;
}

.knob-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.knob-group label {
  font-size: 7px;
  color: var(--text-dim);
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ============================================================
   ROTARY KNOB (Ableton-style)
   ============================================================ */
.rotary-knob {
  position: relative;
  width: var(--knob-size);
  height: var(--knob-size);
  cursor: pointer;
}

.rotary-knob .knob-body {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: conic-gradient(
    from 225deg,
    var(--panel-highlight) 0deg,
    var(--panel-highlight) 270deg,
    transparent 270deg
  );
  position: relative;
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.6),
    inset 0 1px 1px rgba(255, 255, 255, 0.05);
}

.rotary-knob .knob-track {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: conic-gradient(
    from 225deg,
    var(--orange-bright) 0deg,
    var(--orange-bright) 0deg,
    transparent 0deg
  );
  mask: radial-gradient(circle, transparent 40%, black 42%, black 50%, transparent 52%);
  -webkit-mask: radial-gradient(circle, transparent 40%, black 42%, black 50%, transparent 52%);
}

.rotary-knob .knob-cap {
  position: absolute;
  top: 15%;
  left: 15%;
  width: 70%;
  height: 70%;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 35%,
    #555 0%,
    #333 40%,
    #222 100%
  );
  border: 1px solid #555;
  box-shadow:
    0 1px 4px rgba(0, 0, 0, 0.5),
    inset 0 1px 1px rgba(255, 255, 255, 0.08);
}

.rotary-knob .knob-indicator {
  position: absolute;
  top: 15%;
  left: 50%;
  width: 2px;
  height: 22%;
  background: var(--orange-bright);
  transform-origin: bottom center;
  border-radius: 1px;
  box-shadow: 0 0 4px rgba(255, 106, 0, 0.6);
  pointer-events: none;
}

.rotary-knob:hover .knob-cap {
  background: radial-gradient(circle at 40% 35%,
    #666 0%,
    #444 40%,
    #2A2A2A 100%
  );
}

.rotary-knob:hover .knob-indicator {
  box-shadow: 0 0 8px rgba(255, 106, 0, 0.9);
}

.rotary-knob.small {
  --knob-size: 28px;
}

/* Hidden range input inside knob */
.rotary-knob input[type="range"] {
  display: none;
}

/* LED Display */
.led-display {
  background: #0a0a0a;
  border: 1px solid #333;
  padding: 1px 4px;
  font-size: 9px;
  color: var(--led-green);
  text-shadow: 0 0 4px rgba(0, 255, 102, 0.4);
  text-align: center;
  min-width: 40px;
  border-radius: 2px;
  font-family: 'Share Tech Mono', monospace;
}

/* LCD Select */
.lcd-select {
  background: #001a00;
  border: 1px solid #333;
  color: var(--led-green);
  font-family: 'Share Tech Mono', monospace;
  font-size: 10px;
  padding: 3px 6px;
  text-shadow: 0 0 4px rgba(0, 255, 102, 0.4);
  cursor: pointer;
  border-radius: 2px;
  outline: none;
  min-width: 60px;
}

.lcd-select option {
  background: #001a00;
  color: var(--led-green);
}

/* Buttons */
.rack-btn {
  font-family: 'Orbitron', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 5px 10px;
  border: 1px solid;
  cursor: pointer;
  border-radius: 3px;
  text-transform: uppercase;
  transition: all 0.15s;
}

.rack-btn:active {
  transform: scale(0.96);
}

.add-btn {
  background: linear-gradient(180deg, var(--orange-bright), var(--orange-dark));
  border-color: var(--orange-glow);
  color: #fff;
  text-shadow: 0 1px 2px rgba(0,0,0,0.5);
  box-shadow: 0 0 8px rgba(255, 106, 0, 0.3);
}

.add-btn:hover {
  background: linear-gradient(180deg, var(--orange-glow), var(--orange-bright));
  box-shadow: 0 0 15px rgba(255, 106, 0, 0.5);
}

.preset-btn {
  background: linear-gradient(180deg, var(--panel-light), var(--panel-mid));
  border-color: var(--amber);
  color: var(--amber);
  font-size: 9px;
}

.preset-btn:hover {
  background: linear-gradient(180deg, var(--panel-highlight), var(--panel-light));
  box-shadow: 0 0 8px rgba(255, 184, 0, 0.3);
}

.record-btn {
  background: #330000;
  border-color: var(--led-red);
  color: var(--led-red);
}

.record-btn:hover {
  background: #440000;
  box-shadow: 0 0 8px rgba(255, 51, 51, 0.4);
}

.stop-btn {
  background: var(--panel-mid);
  border-color: #666;
  color: var(--text-bright);
}

.stop-btn:hover:not(:disabled) {
  background: var(--panel-light);
}

.stop-btn:disabled {
  opacity: 0.4;
  cursor: default;
}

.power-btn {
  background: #002200;
  border-color: var(--led-green);
  color: var(--led-green);
  font-size: 9px;
  padding: 3px 8px;
}

.power-btn.off {
  background: #220000;
  border-color: var(--led-red);
  color: var(--led-red);
}

.remove-btn {
  background: #220000;
  border-color: #663333;
  color: var(--led-red);
  font-size: 9px;
  padding: 3px 8px;
}

.remove-btn:hover {
  background: #440000;
  box-shadow: 0 0 8px rgba(255, 51, 51, 0.3);
}

.chord-btn {
  background: linear-gradient(180deg, var(--amber), var(--amber-dim));
  border-color: var(--amber);
  color: #1a1a00;
  min-width: 70px;
  font-size: 9px;
}

.chord-btn:hover {
  box-shadow: 0 0 10px rgba(255, 184, 0, 0.4);
}

.oct-shift-btn {
  background: var(--panel-mid);
  border-color: var(--orange-dark);
  color: var(--orange-bright);
  font-size: 12px;
  padding: 2px 8px;
  min-width: 28px;
}

.oct-shift-btn:hover {
  background: var(--panel-light);
}

/* Recording indicator */
.rec-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #333;
  align-self: center;
}

.rec-indicator.recording {
  background: var(--led-red);
  box-shadow: 0 0 10px var(--led-red);
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* Oscillator Grid */
.osc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.osc-channel {
  background: var(--panel-mid);
  border: 1px solid var(--panel-highlight);
  border-radius: 3px;
  padding: 5px 3px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}

.osc-label {
  font-family: 'Orbitron', sans-serif;
  font-size: 10px;
  color: var(--orange-bright);
  letter-spacing: 1px;
}

.osc-knobs-row {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: center;
}

.osc-sub-label {
  font-size: 7px;
  color: var(--text-dim);
  letter-spacing: 1px;
  margin-top: 2px;
  border-top: 1px solid var(--panel-highlight);
  padding-top: 2px;
  width: 100%;
  text-align: center;
}

/* Bottom Controls Row */
.controls-row-bottom {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.sub-section {
  flex: 1;
  min-width: 140px;
}

/* Transport section */
.transport {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.button-row {
  display: flex;
  gap: 6px;
  align-items: center;
}

/* Reverb section styling */
.reverb-section {
  flex: 1;
}

.master-vol {
  align-items: center;
}

/* Module body */
.module-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Scale section */
.scale-section .knob-row {
  align-items: center;
}

.oct-shift-group {
  display: flex;
  align-items: center;
  gap: 4px;
}

.oct-shift-display {
  min-width: 24px;
  text-align: center;
}

/* Hidden file input */
#preset-file-input {
  display: none;
}

/* Responsive */
@media (max-width: 900px) {
  .osc-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .controls-row {
    flex-direction: column;
  }
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #0D0D0D;
}
::-webkit-scrollbar-thumb {
  background: var(--panel-highlight);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--orange-dark);
}