@import url("https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Teko:wght@300;400;600&display=swap");

:root {
  --bg: #0a0c0e;
  --bg2: #111418;
  --bg3: #181d22;
  --border: #1e2830;
  --accent: #00e5ff;
  --accent2: #ff6b35;
  --accent3: #7fff00;
  --dim: #2a3540;
  --text: #c8d8e0;
  --text-dim: #4a6070;
  --active: #00e5ff22;
  --step-on: #00e5ff;
  --step-off: #1a2830;
  --playing: #ff6b35;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Share Tech Mono", monospace;
  font-size: 12px;
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* HEADER */
.header {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.logo {
  font-family: "Teko", sans-serif;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 4px;
  color: var(--accent);
  text-transform: uppercase;
}
.logo span {
  color: var(--text-dim);
  font-weight: 300;
}
.subtitle {
  color: var(--text-dim);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* TRANSPORT */
.transport {
  background: var(--bg2);
  border-bottom: 2px solid var(--border);
  padding: 8px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.btn {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: "Share Tech Mono", monospace;
  font-size: 11px;
  padding: 5px 14px;
  cursor: pointer;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: all 0.1s;
}
.btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.btn.active {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}
.btn.stop-btn {
  border-color: var(--accent2);
  color: var(--accent2);
}
.btn.stop-btn:hover {
  background: var(--accent2);
  color: var(--bg);
}

.bpm-group {
  display: flex;
  align-items: center;
  gap: 8px;
}
.label {
  color: var(--text-dim);
  font-size: 10px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
input[type="range"] {
  -webkit-appearance: none;
  width: 100px;
  height: 2px;
  background: var(--dim);
  outline: none;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  background: var(--accent);
  cursor: pointer;
}
.val-display {
  color: var(--accent);
  min-width: 36px;
  font-size: 13px;
}
.divider {
  width: 1px;
  height: 24px;
  background: var(--border);
}
.pos-display {
  color: var(--accent);
  font-size: 16px;
  font-family: "Teko", sans-serif;
  letter-spacing: 3px;
  min-width: 60px;
}

/* MAIN LAYOUT */
.main {
  display: grid;
  grid-template-columns: 280px 1fr;
  grid-template-rows: 1fr;
  gap: 0;
  flex: 1;
  min-height: 0;
}

/* SCALE PANEL */
.scale-panel {
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.panel-header {
  background: var(--bg3);
  border-bottom: 1px solid var(--border);
  padding: 8px 12px;
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
}
.scale-category {
  font-size: 9px;
  letter-spacing: 1px;
  color: var(--text-dim);
  text-transform: uppercase;
  padding: 6px 12px 3px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.scale-list {
  flex: 1;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--dim) var(--bg2);
}
.scale-item {
  padding: 5px 12px;
  cursor: pointer;
  border-bottom: 1px solid #0d1115;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.1s;
}
.scale-item:hover {
  background: var(--active);
}
.scale-item.selected {
  background: var(--active);
  border-left: 2px solid var(--accent);
}
.scale-name {
  color: var(--text);
  font-size: 11px;
}
.scale-info {
  color: var(--text-dim);
  font-size: 9px;
  letter-spacing: 1px;
}

/* RIGHT PANEL */
.right-panel {
  display: flex;
  flex-direction: column;
  overflow-y: hidden;
  overflow-x: hidden;
  min-height: 0;
}

/* Horizontally-scrollable synth row (delay+reverb) */
.synth-row-scroll {
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--dim) var(--bg2);
}

/* SYNTH CONTROLS */
.synth-row {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
  display: flex;
  gap: 24px;
  align-items: center;
  flex-wrap: wrap;
}
.knob-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.knob-label {
  font-size: 9px;
  color: var(--text-dim);
  letter-spacing: 1px;
  text-transform: uppercase;
}
.knob-val {
  font-size: 12px;
  color: var(--accent);
  min-width: 40px;
  text-align: center;
}
.knob-slider {
  width: 70px;
}

.root-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stacked-selects {
  display: flex;
  flex-direction: column;
  gap: 5px;
  justify-content: center;
}
.select-row {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 6px;
}
.select-row .knob-label {
  min-width: 32px;
  text-align: right;
}
.select-row select {
  font-size: 10px;
  padding: 2px 5px;
}
.lfo-label-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 5px;
}
.lfo-unit {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 6px;
}
.lfo-rd-col {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.lfo-knob {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 5px;
}
.lfo-knob .knob-label {
  min-width: 30px;
  text-align: right;
}
.lfo-knob .knob-val {
  min-width: 34px;
  text-align: left;
}
.knob-sm {
  width: 26px;
  height: 26px;
}
.knob-sm::after {
  width: 2px;
  height: 8px;
  top: 1px;
}
select {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: "Share Tech Mono", monospace;
  font-size: 11px;
  padding: 4px 8px;
  cursor: pointer;
  outline: none;
}
select:focus {
  border-color: var(--accent);
}

/* SCALE DISPLAY */
.scale-display {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 8px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.scale-display-name {
  font-family: "Teko", sans-serif;
  font-size: 18px;
  color: var(--accent);
  letter-spacing: 2px;
}
.scale-degrees {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.degree-chip {
  background: var(--bg3);
  border: 1px solid var(--border);
  padding: 2px 8px;
  font-size: 10px;
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  min-width: 52px;
}
.degree-chip.root-chip {
  border-color: var(--accent);
  color: var(--accent);
}
.degree-num {
  font-size: 9px;
  color: var(--text-dim);
}
.degree-hz {
  font-size: 9px;
  color: var(--accent3);
}
.degree-cents {
  font-size: 8px;
  color: var(--text-dim);
}

/* SEQUENCER */
.seq-panel {
  flex: 1;
  min-height: 0;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
}
.seq-controls {
  display: flex;
  gap: 12px;
  align-items: center;
}
.seq-steps-label {
  color: var(--text-dim);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(16, 1fr);
  gap: 4px;
}
.step {
  background: var(--step-off);
  border: 1px solid var(--border);
  padding: 6px 4px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  transition: all 0.1s;
  min-height: 80px;
  user-select: none;
}
.step:hover {
  border-color: var(--dim);
}
.step.active-step {
  border-color: var(--accent);
  background: var(--active);
}
.step.playing-step {
  background: var(--playing) !important;
  border-color: var(--playing) !important;
}
.step.playing-step .step-num {
  color: var(--bg) !important;
}
.step-num {
  font-size: 9px;
  color: var(--text-dim);
}
.step-note {
  font-family: "Teko", sans-serif;
  font-size: 16px;
  color: var(--text);
}
.step.active-step .step-note {
  color: var(--accent);
}
.step-hz {
  font-size: 8px;
  color: var(--text-dim);
}
.step-rest {
  font-size: 9px;
  color: var(--text-dim);
  font-style: italic;
}

.step-btns {
  display: flex;
  flex-direction: column;
  gap: 2px;
  width: 100%;
  margin-top: auto;
}
.step-btn-row {
  display: flex;
  gap: 2px;
  width: 100%;
}
.step-mini-btn {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-family: "Share Tech Mono", monospace;
  font-size: 8px;
  padding: 2px 0;
  cursor: pointer;
  text-align: center;
  transition: all 0.1s;
}
.step-mini-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.step-mini-btn.rest-active {
  border-color: var(--accent2);
  color: var(--accent2);
}

/* 88-NOTE KEYBOARD DISPLAY */
.keyboard-panel {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 8px 20px;
  overflow-x: auto;
}
.kb-label {
  font-size: 9px;
  color: var(--text-dim);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.kb-strip {
  display: flex;
  gap: 1px;
  height: 32px;
  min-width: max-content;
}
.kb-key {
  flex: 1;
  min-width: 6px;
  max-width: 10px;
  background: var(--bg3);
  border: 1px solid var(--border);
  cursor: pointer;
  position: relative;
  transition: background 0.05s;
}
.kb-key.in-scale {
  background: var(--dim);
  border-color: var(--accent);
}
.kb-key.root-key {
  background: var(--accent);
}
.kb-key.playing-key {
  background: var(--playing) !important;
}
.kb-key:hover {
  background: #2a4050;
}

/* WAVEFORM */
.waveform-panel {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 6px 20px;
  display: flex;
  gap: 12px;
  align-items: center;
}
canvas.waveform {
  width: 200px;
  height: 40px;
  background: var(--bg);
  border: 1px solid var(--border);
}
.env-display {
  display: flex;
  gap: 8px;
  align-items: center;
}
canvas.env-canvas {
  width: 120px;
  height: 40px;
  background: var(--bg);
  border: 1px solid var(--border);
}

/* STATUS BAR */
.status-bar {
  background: var(--bg3);
  border-top: 1px solid var(--border);
  padding: 4px 20px;
  display: flex;
  gap: 24px;
  font-size: 9px;
  color: var(--text-dim);
  letter-spacing: 1px;
}
.status-bar span {
  color: var(--accent);
}
.row-label {
  font-size: 9px;
  letter-spacing: 2px;
  text-transform: uppercase;
  align-self: center;
}

/* ── ROTARY KNOB ─────────────────────────────────────────────────────────── */
.knob-hidden {
  display: none;
}

.knob {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: radial-gradient(circle, #1a2530 60%, #0e1418 100%);
  border: 2px solid var(--border);
  position: relative;
  cursor: ns-resize;
  user-select: none;
  box-shadow:
    0 0 0 1px #0a0c0e,
    inset 0 1px 3px rgba(0, 0, 0, 0.6);
  transition: border-color 0.1s;
}
.knob:hover {
  border-color: var(--accent);
}
.knob::after {
  content: "";
  position: absolute;
  width: 3px;
  height: 11px;
  background: var(--accent);
  top: 2px;
  left: 50%;
  transform-origin: bottom center;
  transform: translateX(-50%) rotate(var(--rot, -135deg));
  border-radius: 2px;
}
.knob.active {
  border-color: var(--accent);
}

/* ADSR sub-block: canvas stacked above knob row */
.adsr-block {
  display: flex;
  flex-direction: column;
  gap: 2px;
  width: fit-content;
}
.adsr-block > canvas {
  width: 100%;
  display: block;
}
.adsr-knobs {
  display: flex;
  gap: 10px;
}

/* ── PRESETS ─────────────────────────────────────────────────────────────── */
.preset-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 220px;
}
.preset-controls {
  display: flex;
  gap: 6px;
  align-items: center;
}
.preset-save-btn {
  border-color: var(--accent3);
  color: var(--accent3);
  font-size: 10px;
  padding: 4px 10px;
  white-space: nowrap;
}
.preset-save-btn:hover {
  background: var(--accent3);
  color: var(--bg);
}
.preset-del-btn {
  border-color: var(--accent2);
  color: var(--accent2);
  font-size: 10px;
  padding: 4px 8px;
}
.preset-del-btn:hover {
  background: var(--accent2);
  color: var(--bg);
}
.preset-select {
  flex: 1;
  font-size: 10px;
  max-width: 200px;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: "Share Tech Mono", monospace;
  padding: 3px 6px;
  cursor: pointer;
  outline: none;
}
.preset-select:focus {
  border-color: var(--accent);
}
.preset-name-display {
  font-size: 9px;
  color: var(--accent3);
  letter-spacing: 1px;
  text-transform: uppercase;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  opacity: 0.7;
}
.preset-export-btn {
  border-color: var(--accent);
  color: var(--accent);
  font-size: 10px;
  padding: 4px 8px;
  white-space: nowrap;
}
.preset-export-btn:hover {
  background: var(--accent);
  color: var(--bg);
}
.preset-import-btn {
  border-color: var(--text-dim);
  color: var(--text-dim);
  font-size: 10px;
  padding: 4px 8px;
  white-space: nowrap;
}
.preset-import-btn:hover {
  border-color: var(--text);
  color: var(--text);
}
.preset-morph-btn {
  border-color: var(--accent3);
  color: var(--accent3);
  font-size: 10px;
  padding: 4px 10px;
  white-space: nowrap;
}
.preset-morph-btn:hover {
  background: var(--accent3);
  color: var(--bg);
}
.preset-controls-row2 {
  display: flex;
  gap: 6px;
  align-items: center;
}
/* inline knob-group for morph time inside preset row */
.knob-group-inline {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 6px;
}
.knob-group-inline .knob-label {
  white-space: nowrap;
}

/* ── CAPTURE ─────────────────────────────────────────────────────────────── */
.capture-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 80px;
}
.capture-controls {
  display: flex;
  gap: 6px;
  align-items: center;
}
#captureBtn {
  white-space: nowrap;
  font-size: 10px;
  padding: 4px 10px;
  border-color: var(--accent2);
  color: var(--accent2);
}
#captureBtn:hover {
  background: var(--accent2);
  color: var(--bg);
}
#captureBtn.capturing {
  border-color: #ff3333;
  color: #ff3333;
  animation: rec-pulse 1s ease-in-out infinite;
}
@keyframes rec-pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}
.capture-timer {
  font-size: 11px;
  font-family: "Share Tech Mono", monospace;
  color: #ff3333;
  letter-spacing: 1px;
  min-width: 36px;
}