:root {
  --bg: #ececec;
  --gridLine: rgba(0, 0, 0, 0.74);
  --circleFill: #f4f4f4;
  --circleStroke: rgba(0, 0, 0, 0.9);
  --labelColor: #111;
  --uiBg: rgba(255, 255, 255, 0.9);
  --uiText: #111;
  --uiBorder: rgba(0, 0, 0, 0.16);
  --uiMuted: #4f4f4f;
  --uiButtonBg: #fff;
  --uiButtonHoverBg: #f5f5f5;
  --focusRing: #111;
  --panelShadow: rgba(0, 0, 0, 0.15);
  --chipBg: rgba(255, 255, 255, 0.75);
  --chipBorder: rgba(0, 0, 0, 0.22);
  --chipText: #1a1a1a;
  --chipMeta: #535353;
  --contextBg: rgba(255, 255, 255, 0.98);
  --contextHover: rgba(0, 0, 0, 0.06);
}

:root[data-theme="dark"] {
  --bg: #14171c;
  --gridLine: rgba(228, 235, 246, 0.34);
  --circleFill: #1f242d;
  --circleStroke: rgba(236, 243, 255, 0.5);
  --labelColor: #eef3fc;
  --uiBg: rgba(25, 30, 38, 0.9);
  --uiText: #eef3fc;
  --uiBorder: rgba(215, 226, 245, 0.22);
  --uiMuted: #b3bfd4;
  --uiButtonBg: #232a34;
  --uiButtonHoverBg: #2c3542;
  --focusRing: #d7e3f7;
  --panelShadow: rgba(0, 0, 0, 0.34);
  --chipBg: rgba(33, 40, 52, 0.92);
  --chipBorder: rgba(216, 229, 248, 0.2);
  --chipText: #e8effa;
  --chipMeta: #b7c5dc;
  --contextBg: rgba(24, 31, 42, 0.98);
  --contextHover: rgba(215, 231, 255, 0.12);
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--uiText);
  font-family: Arial, Helvetica, sans-serif;
}

body {
  position: relative;
}

#tonnetz-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  display: block;
  background: var(--bg);
  cursor: grab;
  touch-action: none;
}

#tonnetz-canvas.dragging {
  cursor: grabbing;
}

.map-function-overlay {
  position: fixed;
  inset: 0;
  z-index: 9;
  pointer-events: none;
}

.map-function-btn {
  position: absolute;
  transform: translate(-50%, -50%);
  pointer-events: auto;
  border: 1.5px solid var(--uiBorder);
  border-radius: 999px;
  min-width: 26px;
  height: 22px;
  padding: 0 7px;
  background: var(--uiBg);
  color: var(--labelColor);
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
  box-shadow: 0 1px 5px var(--panelShadow);
  cursor: pointer;
}

.map-function-btn:hover {
  background: var(--uiButtonHoverBg);
}

.top-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 12;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 14px;
  border-bottom: 1px solid var(--uiBorder);
  background: color-mix(in srgb, var(--uiBg) 94%, transparent);
  backdrop-filter: blur(8px);
}

.brand-wrap {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  flex: 0 0 auto;
}

.brand-logo {
  width: clamp(160px, 16vw, 290px);
  height: auto;
  pointer-events: none;
  user-select: none;
}

.controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
  margin-left: auto;
}

.controls button {
  border: 1px solid var(--uiBorder);
  background: var(--uiButtonBg);
  color: var(--uiText);
  padding: 6px 10px;
  border-radius: 8px;
  font: inherit;
  font-size: 14px;
  line-height: 1.2;
  cursor: pointer;
}

.controls button:hover {
  background: var(--uiButtonHoverBg);
}

.controls button:active {
  transform: translateY(1px);
}

.controls button:focus-visible {
  outline: 2px solid var(--focusRing);
  outline-offset: 1px;
}

.header-menu-wrap > button[aria-expanded="true"] {
  background: var(--uiButtonHoverBg);
  box-shadow: inset 0 0 0 1px var(--uiBorder);
}

#theme-btn.theme-icon-btn {
  min-width: 40px;
  width: 40px;
  height: 40px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-size: 0;
  line-height: 1;
  background-repeat: no-repeat;
  background-position: center;
  background-size: 20px 20px;
}

#theme-btn.theme-icon-btn[data-theme-icon="moon"] {
  background-image: url("assets/moon.svg");
}

#theme-btn.theme-icon-btn[data-theme-icon="sun"] {
  background-image: url("assets/sun.svg");
}

.header-menu-wrap {
  position: relative;
  display: inline-flex;
}

.header-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  z-index: 30;
  min-width: 220px;
  max-width: min(88vw, 280px);
  max-height: min(52vh, 360px);
  overflow: auto;
  border: 1px solid var(--uiBorder);
  border-radius: 10px;
  background: color-mix(in srgb, var(--uiBg) 96%, transparent);
  box-shadow: 0 8px 26px var(--panelShadow);
  backdrop-filter: blur(8px);
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.header-menu[hidden] {
  display: none !important;
}

.header-menu-item {
  width: 100%;
  text-align: left;
  border: 1px solid var(--uiBorder);
  background: var(--uiButtonBg);
  color: var(--uiText);
  min-height: 30px;
  border-radius: 8px;
  padding: 0 10px;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
}

.header-menu-item:hover {
  background: var(--uiButtonHoverBg);
}

.header-menu-item[aria-pressed="true"] {
  background: var(--uiButtonHoverBg);
  box-shadow: inset 0 0 0 1px var(--uiBorder);
}

.selected-readout {
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 28px;
  font-size: 14px;
  line-height: 1.2;
  color: var(--uiMuted);
  margin-right: 4px;
  transform: translateY(1px);
}

.selected-label {
  color: var(--uiText);
  font-weight: 600;
}

#selected-notes {
  color: var(--uiText);
  font-weight: 500;
}

.progression-dock {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 11;
  overflow: visible;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px 14px 14px;
  border-top: 1px solid var(--uiBorder);
  background: linear-gradient(to top, var(--uiBg), color-mix(in srgb, var(--uiBg) 86%, transparent));
  box-shadow: 0 -8px 24px var(--panelShadow);
  backdrop-filter: blur(8px);
}

.progression-resize-handle {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 14px;
  cursor: ns-resize;
  z-index: 22;
  touch-action: none;
}

.progression-resize-handle::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 3px;
  width: 78px;
  height: 4px;
  transform: translateX(-50%);
  border-radius: 999px;
  background: color-mix(in srgb, var(--uiBorder) 85%, transparent);
  opacity: 0.55;
  transition: opacity 120ms ease, background 120ms ease;
}

.progression-dock:hover .progression-resize-handle::before,
.progression-dock.is-resizing .progression-resize-handle::before {
  opacity: 0.95;
  background: color-mix(in srgb, var(--focusRing) 42%, var(--uiBorder));
}

body.is-resizing-progression-panel,
body.is-resizing-progression-panel * {
  cursor: ns-resize !important;
  user-select: none !important;
}

.piano-keyboard-panel {
  border: 1px solid var(--uiBorder);
  border-radius: 12px;
  background: color-mix(in srgb, var(--uiBg) 84%, transparent);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--uiBorder) 45%, transparent);
  padding: 8px 8px 6px;
}

.piano-live-layout {
  display: flex;
  align-items: stretch;
  gap: 8px;
}

.live-chord-panel {
  flex: 0 0 188px;
  min-width: 0;
  border: 1px solid color-mix(in srgb, var(--uiBorder) 88%, transparent);
  border-radius: 8px;
  padding: 8px 10px;
  background: color-mix(in srgb, var(--uiBg) 90%, transparent);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.live-chord-panel-title {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--uiText) 78%, transparent);
}

.live-chord-symbol {
  font-size: 26px;
  font-weight: 800;
  line-height: 1.05;
  color: var(--uiText);
}

.live-chord-notes,
.live-chord-bass,
.live-chord-meta {
  font-size: 12px;
  font-weight: 600;
  color: color-mix(in srgb, var(--uiText) 84%, transparent);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.live-chord-meta {
  margin-top: 2px;
  font-size: 11px;
  font-weight: 700;
  color: color-mix(in srgb, var(--uiText) 68%, transparent);
}

.piano-keyboard {
  --black-key-width: calc(100% / 52 * 0.62);
  position: relative;
  flex: 1 1 auto;
  width: auto;
  height: 112px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--uiBorder);
  background: color-mix(in srgb, var(--uiBg) 88%, transparent);
  user-select: none;
  touch-action: none;
}

.piano-keys-white {
  position: absolute;
  inset: 0;
  display: flex;
}

.piano-keys-black {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.piano-key {
  position: relative;
  box-sizing: border-box;
  cursor: pointer;
}

.piano-key.white {
  flex: 1;
  height: 100%;
  border-right: 1px solid color-mix(in srgb, var(--uiBorder) 90%, transparent);
  background: linear-gradient(to bottom, #f6f7f9, #eceff4);
  transition: background 120ms ease, box-shadow 120ms ease;
}

:root[data-theme="dark"] .piano-key.white {
  background: linear-gradient(to bottom, #c7ced9, #afb8c6);
}

.piano-key.black {
  position: absolute;
  top: 0;
  width: var(--black-key-width);
  height: 66%;
  pointer-events: auto;
  border: 1px solid rgba(0, 0, 0, 0.5);
  border-top: 0;
  border-radius: 0 0 4px 4px;
  background: linear-gradient(to bottom, #2b2f36, #0b0d11 86%);
  transition: background 120ms ease, box-shadow 120ms ease;
}

.piano-key.white.is-active {
  background: linear-gradient(to bottom, color-mix(in srgb, #7dd6ff 44%, #ffffff), color-mix(in srgb, #7dd6ff 28%, #edf2f7));
  box-shadow: inset 0 0 0 2px rgba(58, 167, 255, 0.78), inset 0 -34px rgba(82, 183, 255, 0.2);
}

:root[data-theme="dark"] .piano-key.white.is-active {
  background: linear-gradient(to bottom, #f8fcff 0%, #d7eaff 45%, #b4d7ff 100%);
  box-shadow:
    inset 0 0 0 2px rgba(66, 169, 255, 0.95),
    inset 0 -38px rgba(73, 174, 255, 0.35),
    0 0 14px rgba(79, 173, 255, 0.45);
}

.piano-key.black.is-active {
  background: linear-gradient(to bottom, #79cfff, #2d8ec7 86%);
  box-shadow: 0 0 11px rgba(92, 181, 255, 0.45);
}

.piano-key.white.is-midi-active {
  background: linear-gradient(to bottom, color-mix(in srgb, #ff8c8c 46%, #ffffff), color-mix(in srgb, #ff7a7a 28%, #edf2f7));
  box-shadow: inset 0 0 0 2px rgba(239, 82, 82, 0.92), inset 0 -34px rgba(255, 96, 96, 0.22);
}

:root[data-theme="dark"] .piano-key.white.is-midi-active {
  background: linear-gradient(to bottom, #fff7f7 0%, #ffc8c8 45%, #ff9f9f 100%);
  box-shadow:
    inset 0 0 0 2px rgba(255, 106, 106, 0.97),
    inset 0 -38px rgba(255, 105, 105, 0.35),
    0 0 14px rgba(255, 98, 98, 0.46);
}

.piano-key.black.is-midi-active {
  background: linear-gradient(to bottom, #ff9b9b, #c95b5b 86%);
  border-color: rgba(255, 126, 126, 0.9);
  box-shadow: 0 0 11px rgba(255, 96, 96, 0.48);
}

.piano-key.white.is-active.is-midi-active {
  background: linear-gradient(to bottom, #f0e5ff 0%, #ceb8ff 45%, #b19cff 100%);
  box-shadow:
    inset 0 0 0 2px rgba(148, 114, 255, 0.92),
    inset 0 -36px rgba(151, 118, 255, 0.3),
    0 0 12px rgba(142, 108, 255, 0.38);
}

:root[data-theme="dark"] .piano-key.white.is-active.is-midi-active {
  background: linear-gradient(to bottom, #f7f1ff 0%, #d7c4ff 45%, #bfa5ff 100%);
  box-shadow:
    inset 0 0 0 2px rgba(166, 132, 255, 0.98),
    inset 0 -38px rgba(153, 118, 255, 0.35),
    0 0 16px rgba(151, 118, 255, 0.48);
}

.piano-key.black.is-active.is-midi-active {
  background: linear-gradient(to bottom, #c09eff, #7f63cd 86%);
  border-color: rgba(176, 148, 255, 0.94);
  box-shadow: 0 0 12px rgba(157, 126, 255, 0.5);
}

.piano-key-label {
  position: absolute;
  left: 50%;
  bottom: 2px;
  transform: translateX(-50%);
  font-size: 10px;
  font-weight: 700;
  color: #404750;
  pointer-events: none;
}

:root[data-theme="dark"] .piano-key-label {
  color: #29303a;
}

.piano-key-active-info {
  display: none;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  min-width: 28px;
  border-radius: 6px;
  border: 1px solid rgba(0, 0, 0, 0.25);
  background: rgba(15, 17, 22, 0.85);
  color: #f3f8ff;
  line-height: 1.1;
  text-align: center;
  padding: 2px 5px;
  pointer-events: none;
}

.piano-key.white .piano-key-active-info {
  bottom: 17px;
}

.piano-key.black .piano-key-active-info {
  top: 6px;
  font-size: 10px;
}

.piano-key-note {
  display: block;
  font-size: 11px;
  font-weight: 700;
}

.piano-key-midi {
  display: block;
  margin-top: 1px;
  font-size: 9px;
  opacity: 0.9;
}

.piano-key.is-active .piano-key-active-info {
  display: block;
}

:root[data-theme="dark"] .piano-key.is-active .piano-key-active-info {
  background: rgba(9, 13, 20, 0.94);
  border-color: rgba(113, 196, 255, 0.95);
  color: #f2f8ff;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.35);
}

.progression-list-wrap {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
  gap: 8px;
}

.progression-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.progression-label-wrap {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  min-width: 0;
}

.progression-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--uiText);
}

.current-project-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--uiMuted);
  max-width: min(38vw, 360px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.progression-library {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  justify-content: flex-end;
  flex-wrap: wrap;
  max-width: 100%;
  overflow: visible;
  padding-bottom: 2px;
}

.progression-secondary-controls {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.progression-secondary-controls > button {
  border: 1px solid var(--uiBorder);
  background: var(--uiButtonBg);
  color: var(--uiText);
  border-radius: 8px;
  min-height: 30px;
  padding: 0 10px;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.progression-secondary-controls > button:hover {
  background: var(--uiButtonHoverBg);
}

.progression-secondary-controls > button:disabled {
  opacity: 0.55;
  cursor: default;
}

.progression-secondary-controls > button[aria-expanded="true"] {
  background: var(--uiButtonHoverBg);
  box-shadow: inset 0 0 0 1px var(--uiBorder);
}

.progression-secondary-controls > button:focus-visible {
  outline: 2px solid var(--focusRing);
  outline-offset: 1px;
}

.progression-playback-controls {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-right: 4px;
}

.progression-playback-controls button {
  border: 1px solid var(--uiBorder);
  background: var(--uiButtonBg);
  color: var(--uiText);
  border-radius: 8px;
  min-height: 30px;
  padding: 0 10px;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.progression-playback-controls button:hover {
  background: var(--uiButtonHoverBg);
}

.progression-playback-controls button[aria-pressed="true"] {
  background: var(--uiButtonHoverBg);
  box-shadow: inset 0 0 0 1px var(--uiBorder);
}

#loop-progression-btn[aria-pressed="true"] {
  background: var(--uiButtonBg);
  border-color: color-mix(in srgb, #2f7fff 62%, var(--uiBorder));
  color: var(--uiText);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, #2f7fff 58%, var(--uiBorder));
}

.progression-playback-controls button:focus-visible {
  outline: 2px solid var(--focusRing);
  outline-offset: 1px;
}

.progression-playback-controls button:disabled {
  opacity: 0.55;
  cursor: default;
}

.voicing-debug-panel {
  border: 1px solid var(--uiBorder);
  border-radius: 9px;
  background: color-mix(in srgb, var(--uiBg) 92%, transparent);
  padding: 8px 10px;
  margin: 2px 0 4px;
  box-shadow: 0 2px 10px var(--panelShadow);
}

.voicing-debug-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--uiMuted);
  margin-bottom: 6px;
}

.voicing-debug-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3px 8px;
  align-items: start;
}

.voicing-debug-k {
  font-size: 12px;
  font-weight: 700;
  color: var(--uiText);
  white-space: nowrap;
}

.voicing-debug-v {
  font-size: 12px;
  color: var(--uiText);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  word-break: break-word;
}

.voicing-debug-note {
  margin-top: 6px;
  font-size: 11px;
  color: var(--uiMuted);
}

.piano-engine-status {
  display: none !important;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid var(--uiBorder);
  border-radius: 8px;
  background: var(--uiButtonBg);
  color: var(--uiTextMuted);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.piano-engine-status.is-custom {
  color: #2e8f5d;
}

:root[data-theme="dark"] .piano-engine-status.is-custom {
  color: #79d9a9;
}

.piano-engine-status.is-fallback {
  color: #b27f2e;
}

:root[data-theme="dark"] .piano-engine-status.is-fallback {
  color: #f2cb87;
}

.piano-engine-status.is-error {
  color: #c64848;
}

:root[data-theme="dark"] .piano-engine-status.is-error {
  color: #ff8b8b;
}

.play-toggle-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  min-width: 34px;
  height: 30px;
  padding: 0;
  color: transparent;
  font-size: 0;
}

.play-toggle-btn::before {
  content: "";
  display: block;
  background: var(--uiText);
  transition: transform 120ms ease, opacity 120ms ease, border-radius 120ms ease;
}

.play-toggle-btn[data-icon="play"]::before {
  width: 12px;
  height: 12px;
  clip-path: polygon(16% 10%, 16% 90%, 92% 50%);
  border-radius: 3px;
  transform: translateX(1px);
}

.play-toggle-btn[data-icon="stop"]::before {
  width: 11px;
  height: 11px;
  border-radius: 3.5px;
}

.play-from-start-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  min-width: 34px;
  height: 30px;
  padding: 0;
  color: transparent;
  font-size: 0;
}

.play-from-start-btn::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 8px;
  width: 2px;
  height: 14px;
  border-radius: 2px;
  background: var(--uiText);
}

.play-from-start-btn::after {
  content: "";
  position: absolute;
  left: 13px;
  top: 9px;
  width: 11px;
  height: 12px;
  clip-path: polygon(14% 8%, 14% 92%, 92% 50%);
  border-radius: 2px;
  background: var(--uiText);
}

.options-menu {
  position: absolute;
  right: 0;
  bottom: calc(100% + 8px);
  z-index: 24;
  width: min(260px, calc(100vw - 24px));
  max-height: min(460px, calc(100vh - 96px));
  overflow: auto;
  border: 1px solid var(--uiBorder);
  border-radius: 10px;
  background: var(--contextBg);
  box-shadow: 0 14px 30px var(--panelShadow);
  padding: 8px 6px;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--uiBorder) 76%, transparent)
    color-mix(in srgb, var(--uiBg) 76%, transparent);
}

.options-menu::-webkit-scrollbar {
  width: 9px;
}

.options-menu::-webkit-scrollbar-track {
  background: color-mix(in srgb, var(--uiBg) 80%, transparent);
  border-radius: 999px;
}

.options-menu::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--uiBorder) 82%, transparent);
  border-radius: 999px;
  border: 2px solid color-mix(in srgb, var(--uiBg) 82%, transparent);
}

.options-menu::-webkit-scrollbar-thumb:hover {
  background: color-mix(in srgb, var(--uiBorder) 96%, transparent);
}

:root[data-theme="dark"] .options-menu {
  scrollbar-color: rgba(160, 184, 214, 0.72) rgba(20, 29, 41, 0.8);
}

:root[data-theme="dark"] .options-menu::-webkit-scrollbar-track {
  background: rgba(20, 29, 41, 0.8);
}

:root[data-theme="dark"] .options-menu::-webkit-scrollbar-thumb {
  background: rgba(160, 184, 214, 0.72);
  border-color: rgba(20, 29, 41, 0.8);
}

:root[data-theme="dark"] .options-menu::-webkit-scrollbar-thumb:hover {
  background: rgba(198, 218, 245, 0.86);
}

.options-menu-section {
  display: block;
}

.options-menu-section + .options-menu-section {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid color-mix(in srgb, var(--uiBorder) 82%, transparent);
}

.options-menu-title {
  padding: 1px 8px 3px;
  color: var(--uiMuted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.options-menu-item {
  display: flex;
  width: 100%;
  text-align: left;
  justify-content: flex-start;
  align-items: center;
  border: 1px solid var(--uiBorder);
  background: var(--uiButtonBg);
  color: var(--uiText);
  border-radius: 8px;
  min-height: 30px;
  padding: 0 10px;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
}

#custom-piano-toggle-btn[hidden] {
  display: none !important;
}

.options-menu-section > .options-menu-item + .options-menu-item,
.options-menu-section > .options-menu-control,
.options-menu-section > .options-menu-item + .options-menu-control {
  margin-top: 6px;
}

.options-menu-item:hover {
  background: var(--uiButtonHoverBg);
}

.options-menu-item.is-active,
.options-menu-item[aria-pressed="true"] {
  background: color-mix(in srgb, var(--focusRing) 14%, var(--uiButtonBg));
  border-color: color-mix(in srgb, var(--focusRing) 46%, var(--uiBorder));
}

.voicing-options-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.options-menu-control {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 6px;
  width: 100%;
  box-sizing: border-box;
  border: 1px solid var(--uiBorder);
  border-radius: 8px;
  background: var(--uiButtonBg);
  color: var(--uiText);
  min-height: 56px;
  padding: 8px 10px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
}

.options-menu-control-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.options-menu-control input[type="range"] {
  width: 100%;
  accent-color: var(--focusRing);
}

.options-menu-control select {
  width: 100%;
  border: 1px solid var(--uiBorder);
  border-radius: 8px;
  background: var(--uiPanelBg);
  color: var(--uiText);
  padding: 6px 8px;
  font: inherit;
  font-size: 12px;
}

.options-menu-control select:focus-visible {
  outline: 2px solid var(--focusRing);
  outline-offset: 1px;
}

#midi-input-gain-value {
  min-width: 44px;
  text-align: right;
}

.tempo-control {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 30px;
  border: 1px solid var(--uiBorder);
  border-radius: 8px;
  background: var(--uiButtonBg);
  color: var(--uiText);
  padding: 0 8px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
}

.tempo-control input[type="range"] {
  width: 92px;
  accent-color: var(--focusRing);
}

#tempo-value {
  min-width: 58px;
  text-align: right;
}

.volume-control input[type="range"] {
  width: 80px;
}

#volume-value {
  min-width: 44px;
  text-align: right;
}

.strum-control input[type="range"] {
  width: 82px;
}

#strum-value {
  min-width: 40px;
  text-align: right;
}

.shortcut-sheet {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(8, 11, 16, 0.45);
  backdrop-filter: blur(3px);
}

.shortcut-sheet[hidden] {
  display: none !important;
}

.shortcut-sheet-card {
  width: min(460px, calc(100vw - 24px));
  max-height: min(80vh, 560px);
  overflow: auto;
  border: 1px solid var(--uiBorder);
  border-radius: 12px;
  background: var(--contextBg);
  box-shadow: 0 18px 36px var(--panelShadow);
  padding: 12px 14px;
}

.shortcut-sheet-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.shortcut-sheet-header h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--uiText);
}

.shortcut-sheet-header button {
  border: 1px solid var(--uiBorder);
  background: var(--uiButtonBg);
  color: var(--uiText);
  border-radius: 8px;
  width: 30px;
  height: 30px;
  font: inherit;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
}

.shortcut-sheet-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.shortcut-sheet-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border: 1px solid var(--uiBorder);
  border-radius: 8px;
  padding: 8px 10px;
  color: var(--uiText);
  font-size: 13px;
  font-weight: 600;
}

.shortcut-sheet-list kbd {
  min-width: 38px;
  text-align: center;
  border: 1px solid var(--uiBorder);
  border-radius: 6px;
  background: var(--uiButtonBg);
  color: var(--uiText);
  padding: 2px 7px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
}

.tutorial-overlay {
  position: fixed;
  inset: 0;
  z-index: 45;
  pointer-events: none;
}

.tutorial-overlay[hidden] {
  display: none !important;
}

.tutorial-scrim {
  position: absolute;
  inset: 0;
  background: rgba(7, 10, 15, 0.34);
  pointer-events: none;
}

.tutorial-spotlight {
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 0;
  border-radius: 12px;
  border: 2px solid color-mix(in srgb, var(--focusRing) 82%, transparent);
  box-shadow:
    0 0 0 2px color-mix(in srgb, var(--uiBg) 88%, transparent),
    0 0 0 9999px rgba(0, 0, 0, 0);
  opacity: 0;
  transform: translate3d(0, 0, 0);
  transition: left 140ms ease, top 140ms ease, width 140ms ease, height 140ms ease, opacity 120ms ease;
  pointer-events: none;
}

.tutorial-spotlight.is-active {
  opacity: 1;
}

.tutorial-card {
  position: fixed;
  left: 14px;
  top: 86px;
  z-index: 46;
  width: min(380px, calc(100vw - 24px));
  max-width: 380px;
  border: 1px solid var(--uiBorder);
  border-radius: 12px;
  background: var(--contextBg);
  box-shadow: 0 18px 34px var(--panelShadow);
  padding: 12px;
  pointer-events: auto;
}

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

.tutorial-step-counter {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--uiMuted);
}

#tutorial-close-btn {
  border: 1px solid var(--uiBorder);
  background: var(--uiButtonBg);
  color: var(--uiText);
  border-radius: 8px;
  width: 28px;
  height: 28px;
  padding: 0;
  font: inherit;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  touch-action: manipulation;
}

#tutorial-title {
  margin: 0 0 6px;
  color: var(--uiText);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.2;
}

#tutorial-body {
  margin: 0;
  color: var(--uiText);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.45;
}

.tutorial-hint {
  margin-top: 8px;
  min-height: 18px;
  color: var(--uiMuted);
  font-size: 12px;
  font-weight: 600;
}

.tutorial-hint.is-complete {
  color: color-mix(in srgb, #2aa561 84%, var(--uiText));
}

.tutorial-dont-show {
  margin-top: 10px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--uiMuted);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
}

.tutorial-dont-show input {
  margin: 0;
}

.tutorial-actions {
  margin-top: 12px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
}

.tutorial-actions button {
  border: 1px solid var(--uiBorder);
  background: var(--uiButtonBg);
  color: var(--uiText);
  border-radius: 8px;
  min-height: 30px;
  padding: 0 10px;
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  touch-action: manipulation;
}

.tutorial-actions button:hover {
  background: var(--uiButtonHoverBg);
}

.tutorial-actions button:disabled {
  opacity: 0.5;
  cursor: default;
}

.tutorial-actions #tutorial-next-btn {
  background: color-mix(in srgb, var(--focusRing) 18%, var(--uiButtonBg));
  border-color: color-mix(in srgb, var(--focusRing) 42%, var(--uiBorder));
}

.saved-progressions-menu {
  position: absolute;
  right: 0;
  bottom: calc(100% + 8px);
  z-index: 31;
  width: min(560px, calc(100vw - 24px));
  max-height: min(340px, 55vh);
  overflow: auto;
  border: 1px solid var(--uiBorder);
  border-radius: 10px;
  background: var(--contextBg);
  box-shadow: 0 14px 30px var(--panelShadow);
  padding: 8px;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--uiBorder) 82%, transparent)
    color-mix(in srgb, var(--uiBg) 72%, transparent);
}

.saved-progressions-menu::-webkit-scrollbar {
  width: 10px;
}

.saved-progressions-menu::-webkit-scrollbar-track {
  background: color-mix(in srgb, var(--uiBg) 82%, transparent);
  border-radius: 999px;
}

.saved-progressions-menu::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--uiBorder) 76%, transparent);
  border-radius: 999px;
  border: 2px solid color-mix(in srgb, var(--uiBg) 82%, transparent);
}

.saved-progressions-menu::-webkit-scrollbar-thumb:hover {
  background: color-mix(in srgb, var(--uiBorder) 96%, transparent);
}

:root[data-theme="dark"] .saved-progressions-menu {
  scrollbar-color: rgba(160, 184, 214, 0.68) rgba(20, 29, 41, 0.78);
}

:root[data-theme="dark"] .saved-progressions-menu::-webkit-scrollbar-track {
  background: rgba(20, 29, 41, 0.78);
}

:root[data-theme="dark"] .saved-progressions-menu::-webkit-scrollbar-thumb {
  background: rgba(160, 184, 214, 0.68);
  border-color: rgba(20, 29, 41, 0.78);
}

:root[data-theme="dark"] .saved-progressions-menu::-webkit-scrollbar-thumb:hover {
  background: rgba(198, 218, 245, 0.84);
}

.transpose-menu {
  position: absolute;
  z-index: 30;
  width: min(780px, calc(100vw - 24px));
  max-height: min(250px, 52vh);
  overflow: auto;
  border: 1px solid var(--uiBorder);
  border-radius: 10px;
  background: var(--contextBg);
  box-shadow: 0 14px 30px var(--panelShadow);
  padding: 8px;
}

.transpose-menu-list {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 6px;
}

.transpose-option-btn {
  flex: 0 0 auto;
  min-width: 46px;
  border: 1px solid var(--uiBorder);
  background: var(--uiButtonBg);
  color: var(--uiText);
  border-radius: 7px;
  min-height: 28px;
  padding: 0 8px;
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
}

.transpose-option-btn:hover {
  background: var(--uiButtonHoverBg);
}

.transpose-option-btn.is-active,
.transpose-option-btn[aria-pressed="true"] {
  background: color-mix(in srgb, var(--focusRing) 14%, var(--uiButtonBg));
  border-color: color-mix(in srgb, var(--focusRing) 46%, var(--uiBorder));
}

.saved-progressions-empty {
  color: var(--uiMuted);
  font-size: 13px;
  padding: 10px 8px;
}

.saved-progressions-toolbar {
  display: flex;
  justify-content: flex-start;
  gap: 6px;
  margin-bottom: 8px;
}

.saved-folder-section {
  border: 1px solid var(--uiBorder);
  border-radius: 8px;
  background: color-mix(in srgb, var(--uiBg) 72%, transparent);
  padding: 8px;
}

.saved-folder-section + .saved-folder-section {
  margin-top: 8px;
}

.saved-folder-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.saved-folder-title {
  color: var(--uiText);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.2;
}

.saved-folder-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
}

.saved-folder-empty {
  color: var(--uiMuted);
  font-size: 12px;
  padding: 2px 0 4px;
}

.saved-folder-items[hidden] {
  display: none;
}

.saved-folder-section.is-collapsed .saved-folder-header {
  margin-bottom: 0;
}

.saved-progression-item {
  border: 1px solid var(--uiBorder);
  border-radius: 8px;
  padding: 8px;
  background: color-mix(in srgb, var(--uiBg) 72%, transparent);
}

.saved-progression-item + .saved-progression-item {
  margin-top: 8px;
}

.saved-progression-title {
  color: var(--uiText);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.2;
}

.saved-progression-meta {
  margin-top: 3px;
  color: var(--uiMuted);
  font-size: 12px;
}

.saved-progression-actions {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.saved-progression-btn {
  border: 1px solid var(--uiBorder);
  background: var(--uiButtonBg);
  color: var(--uiText);
  border-radius: 6px;
  min-height: 26px;
  padding: 0 8px;
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

.saved-progression-btn:hover {
  background: var(--uiButtonHoverBg);
}

.saved-progression-btn.warn {
  color: #d65f5f;
}

.saved-progression-btn.icon-delete-btn {
  min-width: 26px;
  width: 26px;
  padding: 0;
  text-align: center;
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
}

.progression-list {
  display: flex;
  align-items: flex-start;
  align-content: flex-start;
  flex: 1 1 auto;
  min-height: 40px;
  gap: 8px;
  flex-wrap: wrap;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-gutter: stable;
  overscroll-behavior: contain;
  padding: 6px 4px 4px 4px;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--uiBorder) 78%, transparent) color-mix(in srgb, var(--uiBg) 70%, transparent);
}

.progression-list::-webkit-scrollbar {
  width: 10px;
}

.progression-list::-webkit-scrollbar-track {
  background: color-mix(in srgb, var(--uiBg) 74%, transparent);
  border-radius: 999px;
}

.progression-list::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--uiBorder) 78%, var(--uiButtonBg));
  border-radius: 999px;
  border: 2px solid color-mix(in srgb, var(--uiBg) 74%, transparent);
}

.progression-list::-webkit-scrollbar-thumb:hover {
  background: color-mix(in srgb, var(--focusRing) 30%, var(--uiBorder));
}

:root[data-theme="dark"] .progression-list {
  scrollbar-color: rgba(176, 194, 222, 0.62) rgba(26, 34, 46, 0.72);
}

:root[data-theme="dark"] .progression-list::-webkit-scrollbar-track {
  background: rgba(24, 31, 43, 0.82);
}

:root[data-theme="dark"] .progression-list::-webkit-scrollbar-thumb {
  background: rgba(176, 195, 226, 0.62);
  border-color: rgba(24, 31, 43, 0.82);
}

:root[data-theme="dark"] .progression-list::-webkit-scrollbar-thumb:hover {
  background: rgba(206, 220, 246, 0.78);
}

.progression-empty {
  color: var(--uiMuted);
  font-size: 14px;
}

.progression-chip {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  min-width: 160px;
  padding: 12px 16px;
  border-radius: 18px;
  border: 1px solid var(--chipBorder);
  background: var(--chipBg);
  color: var(--chipText);
  user-select: none;
  cursor: grab;
}

.progression-section-chip {
  min-width: 190px;
  background: color-mix(in srgb, var(--chipBg) 72%, var(--uiButtonBg));
  border-style: dashed;
}

.progression-section-label {
  font-size: 19px;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.progression-section-meta {
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 11px;
}

.progression-chip.is-playing {
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--focusRing) 70%, transparent), 0 0 22px color-mix(in srgb, var(--focusRing) 24%, transparent);
}

.progression-chip.is-cursor {
  box-shadow:
    inset -3px 0 0 color-mix(in srgb, var(--focusRing) 86%, transparent),
    2px 0 10px color-mix(in srgb, var(--focusRing) 18%, transparent);
}

.progression-chip.is-dragging {
  opacity: 0.55;
  cursor: grabbing;
}

.progression-chip.drop-before {
  box-shadow: inset 3px 0 0 color-mix(in srgb, var(--focusRing) 70%, transparent);
}

.progression-chip.drop-after {
  box-shadow: inset -3px 0 0 color-mix(in srgb, var(--focusRing) 70%, transparent);
}

.progression-chip:focus-within {
  outline: 2px solid var(--focusRing);
  outline-offset: 1px;
}

.progression-chip-label {
  font-size: 22px;
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.progression-chip-meta {
  font-size: 13px;
  color: var(--chipMeta);
  font-weight: 600;
}

.progression-chip-footer {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.progression-chip-actions {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.progression-chip-btn {
  border: 1px solid var(--chipBorder);
  background: color-mix(in srgb, var(--chipBg) 66%, transparent);
  color: var(--chipText);
  border-radius: 8px;
  width: 28px;
  height: 28px;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
}

.progression-chip-duration-btn {
  width: auto;
  min-width: 52px;
  padding: 0 10px;
  font-size: 12px;
  letter-spacing: 0;
}

.progression-chip-btn:hover {
  background: color-mix(in srgb, var(--uiButtonHoverBg) 70%, var(--chipBg));
}

.progression-chip-btn:disabled {
  opacity: 0.42;
  cursor: default;
}

.progression-chip-delete-btn {
  color: #d65f5f;
}

.progression-chip-melody-btn.is-set {
  border-color: color-mix(in srgb, #4c90ff 85%, var(--chipBorder));
  color: color-mix(in srgb, #4c90ff 94%, var(--chipText));
  box-shadow: 0 0 0 1px color-mix(in srgb, #4c90ff 48%, transparent);
  background: color-mix(in srgb, #4c90ff 12%, var(--chipBg));
}

:root[data-theme="dark"] .progression-chip-melody-btn.is-set {
  border-color: rgba(114, 177, 255, 0.92);
  color: rgba(169, 211, 255, 0.98);
  box-shadow: 0 0 0 1px rgba(114, 177, 255, 0.38);
  background: rgba(74, 138, 214, 0.22);
}

.progression-chip-melody-btn.is-armed {
  border-color: color-mix(in srgb, #d65f5f 85%, var(--chipBorder));
  color: color-mix(in srgb, #d65f5f 95%, var(--chipText));
  box-shadow: 0 0 0 1px color-mix(in srgb, #d65f5f 55%, transparent);
  background: color-mix(in srgb, #d65f5f 12%, var(--chipBg));
}

/* Armed state must win over set-state (including dark-theme .is-set selector). */
.progression-chip-melody-btn.is-set.is-armed,
:root[data-theme="dark"] .progression-chip-melody-btn.is-set.is-armed {
  border-color: color-mix(in srgb, #d65f5f 85%, var(--chipBorder));
  color: color-mix(in srgb, #d65f5f 95%, var(--chipText));
  box-shadow: 0 0 0 1px color-mix(in srgb, #d65f5f 55%, transparent);
  background: color-mix(in srgb, #d65f5f 12%, var(--chipBg));
}

.chip-duration-menu {
  position: fixed;
  z-index: 26;
  width: 92px;
  max-height: min(280px, calc(100vh - 20px));
  overflow-y: auto;
  border-radius: 10px;
  border: 1px solid var(--uiBorder);
  background: var(--contextBg);
  box-shadow: 0 10px 24px var(--panelShadow);
  padding: 6px;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--uiBorder) 82%, transparent)
    color-mix(in srgb, var(--uiBg) 72%, transparent);
}

.chip-duration-menu-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
}

.chip-duration-option-btn {
  width: 100%;
  border: 1px solid var(--uiBorder);
  background: color-mix(in srgb, var(--uiBg) 90%, transparent);
  color: var(--uiText);
  border-radius: 8px;
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.1;
  padding: 7px 8px;
  text-align: center;
  cursor: pointer;
}

.chip-duration-option-btn:hover {
  background: color-mix(in srgb, var(--uiButtonHoverBg) 76%, transparent);
}

.chip-duration-option-btn.is-active {
  border-color: color-mix(in srgb, var(--focusRing) 70%, var(--uiBorder));
  color: color-mix(in srgb, var(--focusRing) 92%, var(--uiText));
  background: color-mix(in srgb, var(--focusRing) 16%, var(--uiBg));
}

@media (max-width: 900px) {
  .piano-live-layout {
    flex-direction: column;
  }

  .live-chord-panel {
    flex: 0 0 auto;
  }

  .progression-chip {
    min-width: 136px;
    padding: 10px 12px;
    border-radius: 14px;
  }

  .piano-keyboard {
    height: 92px;
  }

  .progression-chip-label {
    font-size: 18px;
  }

  .progression-chip-meta {
    font-size: 12px;
  }

  .progression-chip-btn {
    width: 24px;
    height: 24px;
    font-size: 12px;
  }

  .progression-chip-duration-btn {
    min-width: 46px;
    padding: 0 8px;
  }
}

.chord-context-menu {
  position: fixed;
  z-index: 25;
  box-sizing: border-box;
  width: min(260px, calc(100vw - 20px));
  min-width: 0;
  max-height: 320px;
  overflow: auto;
  border-radius: 10px;
  border: 1px solid var(--uiBorder);
  background: var(--contextBg);
  box-shadow: 0 14px 30px var(--panelShadow);
  padding: 6px;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--uiBorder) 82%, transparent)
    color-mix(in srgb, var(--uiBg) 72%, transparent);
}

.chord-context-menu::-webkit-scrollbar {
  width: 10px;
}

.chord-context-menu::-webkit-scrollbar-track {
  background: color-mix(in srgb, var(--uiBg) 82%, transparent);
  border-radius: 999px;
}

.chord-context-menu::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--uiBorder) 86%, transparent);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: padding-box;
}

.chord-context-menu::-webkit-scrollbar-thumb:hover {
  background: color-mix(in srgb, var(--focusRing) 36%, var(--uiBorder));
  background-clip: padding-box;
}

:root[data-theme="dark"] .chord-context-menu {
  scrollbar-color: rgba(160, 184, 214, 0.68) rgba(20, 29, 41, 0.78);
}

:root[data-theme="dark"] .chord-context-menu::-webkit-scrollbar-track {
  background: rgba(20, 29, 41, 0.78);
}

:root[data-theme="dark"] .chord-context-menu::-webkit-scrollbar-thumb {
  background: rgba(160, 184, 214, 0.68);
  background-clip: padding-box;
}

:root[data-theme="dark"] .chord-context-menu::-webkit-scrollbar-thumb:hover {
  background: rgba(186, 207, 233, 0.86);
  background-clip: padding-box;
}

.chord-context-option {
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  color: var(--uiText);
  border-radius: 6px;
  padding: 8px 9px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}

.chord-context-group-label {
  margin: 7px 4px 4px;
  color: var(--mutedText);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.chord-context-group-label:first-child {
  margin-top: 2px;
}

.chord-context-option:hover {
  background: var(--contextHover);
}

.chord-context-option.is-favorite {
  color: color-mix(in srgb, var(--focusRing) 78%, var(--uiText));
}

.chord-context-option.warn {
  color: #d65f5f;
}

@media (max-width: 720px) {
  .top-header {
    height: auto;
    align-items: flex-start;
    padding: 8px 10px;
  }

  .brand-logo {
    width: clamp(138px, 36vw, 200px);
  }

  .controls {
    width: 100%;
    justify-content: flex-start;
  }

  .selected-readout {
    flex-basis: auto;
  }

  .progression-header {
    align-items: flex-start;
  }

  .saved-progressions-menu {
    right: 0;
    width: min(96vw, 420px);
    max-height: 46vh;
  }

  .progression-playback-controls {
    margin-right: 0;
  }

  .tempo-control {
    width: 100%;
    justify-content: space-between;
  }

  .tempo-control input[type="range"] {
    width: min(52vw, 180px);
  }

  .volume-control input[type="range"] {
    width: min(40vw, 140px);
  }

  .progression-dock {
    padding-bottom: max(12px, env(safe-area-inset-bottom));
  }
}