:root {
  --bg: #000;
  --fg: #fff;
  --muted: #9f9f9f;
  --danger: #ff4f4f;
  --pixel: 2px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  min-height: 100%;
  font-family: "Courier New", monospace;
  image-rendering: pixelated;
}

body {
  padding: 16px;
}

.app {
  max-width: 1500px;
  margin: 0 auto 0 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 12px;
  align-items: start;
}

.panel {
  border: var(--pixel) solid var(--fg);
  padding: 10px;
  background: #010101;
  border-radius: 3px;
}

.app > .controls {
  grid-column: 2;
  grid-row: 1 / span 20;
  position: sticky;
  top: 16px;
  max-height: calc(100vh - 32px);
  overflow: auto;
  z-index: 5;
  display: grid;
  gap: 10px;
}

.app > :not(.controls) {
  grid-column: 1;
}

.app-header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo {
  width: 90px;
  height: auto;
  flex-shrink: 0;
  image-rendering: pixelated;
  filter: invert(1) contrast(1.2) brightness(1);
}

.header-text h1 {
  margin: 0;
  font-size: 18px;
  letter-spacing: 1px;
}

.header-text p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.controls .row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 0;
}

.controls .row:first-of-type {
  grid-template-columns: 1fr 1fr auto;
  align-items: center;
}

.controls .row:last-of-type {
  grid-template-columns: 1fr;
}

.controls .btn {
  width: 100%;
  text-align: center;
}

.controls #connectBtn,
.controls #disconnectBtn {
  min-height: 38px;
  padding-top: 8px;
  padding-bottom: 8px;
}

.row .badge {
  margin-left: auto;
}

.connection-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.connection-light {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid var(--fg);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.connection-light.offline {
  background: #7a0000;
  box-shadow: 0 0 6px rgba(255, 0, 0, 0.25);
}

.connection-light.online {
  background: #00d26a;
  box-shadow: 0 0 10px rgba(0, 255, 128, 0.45);
}

.btn,
input,
select {
  border: var(--pixel) solid var(--fg);
  background: var(--bg);
  color: var(--fg);
  padding: 6px 8px;
  font: inherit;
  border-radius: 3px;
}

.btn {
  cursor: pointer;
  text-transform: uppercase;
}

.btn:hover:enabled,
.slot-tab:hover {
  background: #111;
}

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

.badge {
  display: inline-flex;
  align-items: center;
  border: var(--pixel) solid var(--fg);
  padding: 4px 8px;
  font-size: 12px;
  border-radius: 3px;
}

.slot-tabs {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 6px;
}

.slot-tab {
  border: var(--pixel) solid var(--fg);
  background: var(--bg);
  color: var(--fg);
  padding: 8px 0;
  font: inherit;
  border-radius: 3px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}

.slot-tab.active {
  background: var(--fg);
  color: var(--bg);
}

.slot-tab.active .slot-tab-state {
  color: var(--fg);
  background: var(--bg);
  padding: 0 4px;
  border-radius: 2px;
  border: 1px solid var(--fg);
}

.slot-tab.active.occupied .slot-tab-state,
.slot-tab.active.empty .slot-tab-state {
  color: var(--fg);
}

.slot-tab-state {
  font-size: 10px;
  letter-spacing: 0.5px;
  opacity: 0.85;
}

.slot-tab.occupied .slot-tab-state {
  color: var(--fg);
}

.slot-tab.empty .slot-tab-state {
  color: var(--muted);
}

.controls-help {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.35;
}

.chord-readonly-note {
  margin: 0 0 8px;
  font-size: 11px;
  line-height: 1.35;
  color: var(--muted);
  border-left: 2px solid var(--muted);
  padding-left: 8px;
}

.editor-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

h2 {
  margin: 0 0 8px;
  font-size: 16px;
}

.form-grid {
  display: grid;
  gap: 12px;
}

.group {
  border-radius: 3px;
  border: 1px solid var(--fg);
  padding: 8px;
}

.group h3 {
  margin: 0 0 8px;
  font-size: 13px;
  text-transform: uppercase;
}

.field {
  display: grid;
  grid-template-columns: minmax(180px, 240px) 1fr;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.field:last-child {
  margin-bottom: 0;
}

.field label {
  font-size: 12px;
}

.field input[type="checkbox"] {
  width: 18px;
  height: 18px;
}

#logOutput {
  margin: 0;
  max-height: 210px;
  overflow: auto;
  border: 1px solid var(--fg);
  padding: 8px;
  font-size: 12px;
  white-space: pre-wrap;
}

.error {
  color: var(--danger);
}

/* Chord Layout Grid */
.chord-layout-editor {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 38%);
  gap: 10px;
  align-items: start;
}

.chord-grid {
  display: grid;
  grid-template-columns: 52px repeat(5, minmax(0, 1fr));
  gap: 4px;
  max-width: 430px;
}

.chord-label {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: bold;
  text-transform: uppercase;
  min-height: 34px;
}

.chord-label.note {
  grid-column: 1;
  writing-mode: horizontal-tb;
}

.chord-key {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1;
  border: var(--pixel) solid var(--fg);
  background: var(--bg);
  color: var(--fg);
  cursor: pointer;
  border-radius: 4px;
  font-size: 10px;
  font-weight: bold;
  text-transform: uppercase;
  min-height: 34px;
  line-height: 1.05;
  font: inherit;
  image-rendering: pixelated;
  text-shadow: 0 0 2px rgba(255, 255, 255, 0.2);
  padding: 2px 4px;
}

.chord-key:hover {
  background: #222;
  color: var(--fg);
}

.chord-key:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.chord-key.selected {
  background: var(--fg);
  color: var(--bg);
  box-shadow: inset 0 0 0 2px var(--danger);
}

.chord-editor-panel {
  border: 1px solid var(--fg);
  border-radius: 3px;
  padding: 8px;
  min-height: 320px;
  overflow-y: auto;
  max-height: 70vh;
  width: 100%;
}

.chord-editor-panel h3 {
  margin: 0 0 8px;
  font-size: 12px;
  text-transform: uppercase;
}

.chord-editor-hint {
  margin: 0 0 8px;
  font-size: 11px;
  white-space: pre-line;
  color: var(--muted);
}

.chord-selected-info {
  display: grid;
  gap: 6px;
  margin-bottom: 8px;
  font-size: 11px;
}

.chord-note-palette {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.chord-note-choice {
  border: var(--pixel) solid var(--fg);
  background: var(--bg);
  color: var(--fg);
  border-radius: 3px;
  padding: 8px 4px;
  font: inherit;
  font-size: 11px;
  cursor: pointer;
  text-transform: uppercase;
}

.chord-note-choice:hover {
  background: #111;
}

.chord-note-choice.selected {
  background: var(--fg);
  color: var(--bg);
}

.chord-editor-panel.is-readonly {
  opacity: 0.7;
}

@media (max-width: 760px) {
  .chord-layout-editor {
    grid-template-columns: 1fr;
  }

  .chord-grid {
    max-width: 100%;
  }

  .chord-note-palette {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .app {
    grid-template-columns: 1fr;
    margin: 0 auto;
  }

  .app > .controls,
  .app > :not(.controls) {
    grid-column: auto;
    grid-row: auto;
  }

  .app > .controls {
    position: static;
    max-height: none;
  }

  .field {
    grid-template-columns: 1fr;
  }

  .slot-tabs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .controls-help {
    font-size: 10px;
  }
}

/* Quality selector styles */
.chord-quality-selector {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px 0;
  margin-top: 8px;
  border-top: 1px solid var(--muted);
}

.chord-quality-label {
  font-size: 11px;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: bold;
}

.chord-quality-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
  gap: 6px;
}

.chord-quality-btn {
  border: var(--pixel) solid var(--fg);
  background: var(--bg);
  color: var(--fg);
  border-radius: 3px;
  padding: 10px 6px;
  font: inherit;
  font-size: 11px;
  cursor: pointer;
  text-transform: uppercase;
  font-weight: bold;
  transition: all 0.15s ease;
}

.chord-quality-btn:hover:not(:disabled) {
  background: #111;
}

.chord-quality-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.chord-quality-btn.selected {
  background: var(--fg);
  color: var(--bg);
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
}

/* ===== ARP SEQUENCER STYLES ===== */

.chord-presets-section {
  padding: 10px;
  border: var(--pixel) solid var(--fg);
  background: #010101;
  border-radius: 3px;
  margin-bottom: 12px;
}

.chord-presets-section h4 {
  margin: 0 0 8px 0;
  font-size: 12px;
  text-transform: uppercase;
  font-weight: bold;
}

.arp-sequencer-editor {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.arp-sequencer-editor h3 {
  margin: 0;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.arp-sequencer-header {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px;
  border: var(--pixel) solid var(--fg);
  background: #010101;
  border-radius: 3px;
}

.arp-sequencer-header label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  cursor: pointer;
  user-select: none;
}

.arp-sequencer-header input[type="checkbox"] {
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.arp-timing-info {
  font-size: 10px;
  color: var(--muted);
  padding: 6px;
  background: #000;
  border-radius: 2px;
  font-family: "Courier New", monospace;
}

.arp-timing-info strong {
  color: var(--fg);
}

.arp-grid-container {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: var(--pixel) solid var(--fg);
  background: #000;
  overflow: auto;
  max-height: 600px;
}

.arp-grid-row {
  display: grid;
  grid-template-columns: 45px repeat(8, 1fr);
  gap: 0;
  border-bottom: var(--pixel) solid #111;
}

.arp-grid-row:last-child {
  border-bottom: none;
}

.arp-grid-cell {
  min-height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: var(--pixel) solid #111;
  padding: 2px;
  font-size: 9px;
}

.arp-grid-cell:last-child {
  border-right: none;
}

.arp-grid-header {
  position: sticky;
  top: 0;
  background: #050505;
  border-bottom: var(--pixel) solid var(--fg);
  z-index: 2;
  font-weight: bold;
  text-transform: uppercase;
}

.arp-grid-corner {
  background: #000;
  border-right: var(--pixel) solid var(--fg);
}

.arp-grid-step-header {
  background: #050505;
  color: var(--fg);
  font-size: 9px;
}

.arp-grid-note-label {
  background: #050505;
  border-right: var(--pixel) solid var(--fg);
  font-weight: bold;
  min-width: 45px;
  text-align: center;
}

.arp-grid-note-button {
  background: #000;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 8px;
  padding: 4px;
  transition: all 0.15s ease;
  font-weight: bold;
  text-transform: uppercase;
}

.arp-grid-note-button:hover:not(:disabled) {
  background: #111;
  color: var(--fg);
}

.arp-grid-note-button:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.arp-grid-note-button.selected {
  background: #00ff00;
  color: #000;
  font-weight: bold;
}

.arp-sequencer-legend {
  padding: 10px;
  border: var(--pixel) solid var(--fg);
  background: #010101;
  border-radius: 3px;
  font-size: 10px;
}

.arp-sequencer-legend strong {
  display: block;
  margin-bottom: 6px;
  text-transform: uppercase;
}

.arp-legend-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 8px;
}

.arp-legend-content p {
  margin: 0;
  font-size: 9px;
  line-height: 1.3;
}

.arp-legend-content p strong {
  display: inline;
  margin-right: 4px;
}

/* ARP Custom Order Sequencer Styles */
.arp-custom-order-editor {
  padding: 12px;
  border: var(--pixel) solid var(--muted);
  border-radius: 3px;
  background: #010101;
}

.arp-custom-order-editor h3 {
  margin: 0 0 12px 0;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.arp-enable-section {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  padding: 8px;
  background: #0a0a0a;
  border-radius: 2px;
}

.arp-enable-section label {
  font-size: 12px;
  text-transform: uppercase;
  flex: 1;
}

.arp-enable-section input[type="checkbox"] {
  width: 20px;
  height: 20px;
  cursor: pointer;
  accent-color: var(--fg);
}

.arp-sequencer {
  margin: 12px 0;
}

.arp-sequencer-note {
  font-size: 11px;
  color: var(--muted);
  margin: 0 0 8px 0;
  padding: 6px;
  background: #0a0a0a;
  border-left: var(--pixel) solid var(--muted);
}

.arp-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin: 12px 0;
}

.arp-step {
  border: var(--pixel) solid var(--muted);
  border-radius: 3px;
  padding: 8px;
  background: #0a0a0a;
}

.arp-step-num {
  font-size: 11px;
  font-weight: bold;
  text-align: center;
  margin-bottom: 6px;
  color: var(--muted);
  text-transform: uppercase;
}

.arp-code-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 2px;
}

.arp-code-btn {
  border: var(--pixel) solid var(--fg);
  background: var(--bg);
  color: var(--muted);
  font: inherit;
  font-size: 10px;
  padding: 6px 3px;
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.15s ease;
  text-transform: uppercase;
}

.arp-code-btn:hover:not(:disabled) {
  background: #111;
  color: var(--fg);
  border-color: var(--fg);
}

.arp-code-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.arp-code-btn.selected {
  background: var(--fg);
  color: var(--bg);
  font-weight: bold;
  box-shadow: 0 0 6px rgba(255, 255, 255, 0.2);
}

.arp-legend {
  margin-top: 12px;
  padding: 8px;
  border: var(--pixel) dashed var(--muted);
  border-radius: 2px;
  background: #0a0a0a;
  font-size: 11px;
}

.arp-legend strong {
  display: block;
  margin-bottom: 6px;
  text-transform: uppercase;
  color: var(--fg);
}

.arp-legend-items {
  margin: 0;
  color: var(--muted);
  line-height: 1.4;
  font-size: 10px;
}