* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  background: #1a1a2e;
  color: #eee;
  min-height: 100vh;
  touch-action: manipulation;
}

/* Full-screen overlay: tap to unlock Web Audio (required on iOS) */
.audio-unlock-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 15, 26, 0.95);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.audio-unlock-overlay--hidden {
  display: none;
}

.audio-unlock-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1.5rem 2rem;
  margin: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  color: inherit;
  font: inherit;
  -webkit-tap-highlight-color: transparent;
  min-height: 44px;
  min-width: 44px;
}

.audio-unlock-btn .audio-unlock-text {
  display: block;
  font-size: 1.25rem;
  font-weight: 700;
  color: #eee;
  margin: 0 0 0.5rem;
}

.audio-unlock-btn .audio-unlock-hint {
  display: block;
  font-size: 0.9rem;
  color: #aaa;
  margin: 0;
}

.app {
  min-height: 100vh;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.main-with-sidebar {
  flex: 1 1 0;
  min-height: 0;
  display: flex;
  flex-direction: row;
}

.main-content {
  flex: 1 1 0;
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  padding: 0.75rem 1rem;
  gap: 0.75rem;
  overflow: auto;
}

.dials-section {
  flex: 0 0 auto;
}

.nav-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.nav-row-bottom {
  flex: 0 0 auto;
  margin-top: auto;
  padding-top: 0.5rem;
}

.piano-section {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.raga-description {
  flex: 1 1 0;
}

/* ——— Clock-style dials ——— */
.clock-dials {
  display: flex;
  align-items: flex-start;
  justify-content: space-evenly;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  padding: 0.5rem 0;
}

.dial {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.dial-controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
}

.dial-value-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.15rem;
  min-width: 3rem;
}

.dial-value {
  font-size: 1.25rem;
  font-weight: 700;
  text-align: center;
}

/* Dial buttons: transparent, only arrow visible; color from parent dial */
.dial-btn {
  min-width: 44px;
  min-height: 44px;
  padding: 0.35rem 0.5rem;
  background: transparent;
  color: inherit;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.dial-btn:hover {
  background: rgba(255, 255, 255, 0.08);
}

/* Dial M: blue */
.dial-m {
  --dial-color: #4a90d9;
}
.dial-m .dial-value,
.dial-m .dial-caption,
.dial-m .dial-btn {
  color: var(--dial-color);
}

/* Dial R–G: green */
.dial-rg {
  --dial-color: #3d9d6b;
}
.dial-rg .dial-value,
.dial-rg .dial-caption,
.dial-rg .dial-btn {
  color: var(--dial-color);
}

/* Dial D–N: purple */
.dial-dn {
  --dial-color: #9b59b6;
}
.dial-dn .dial-value,
.dial-dn .dial-caption,
.dial-dn .dial-btn {
  color: var(--dial-color);
}

.dial-caption {
  font-size: 0.7rem;
  text-align: center;
  margin-top: 0.15rem;
}

.dial-caption-two-lines {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.35;
}

.dial-caption-two-lines .dial-caption-line {
  display: block;
}

.header {
  flex: 0 0 auto;
  padding: 0.75rem 1rem;
  background: #16213e;
  border-bottom: 1px solid #0f3460;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.header h1 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.sidebar-toggle {
  padding: 0.4rem 0.75rem;
  background: #0f3460;
  color: #eee;
  border: 1px solid #1a4a7a;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.875rem;
}

.sidebar-toggle:hover {
  background: #1a4a7a;
}

/* ——— Full-screen settings overlay ——— */
.settings-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: #16213e;
  overflow: auto;
  display: none;
  align-items: flex-start;
  justify-content: center;
}

.settings-overlay.settings-overlay--open {
  display: flex;
}

.settings-panel {
  width: 100%;
  max-width: 360px;
  padding: 1.5rem;
  background: #16213e;
}

.settings-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.settings-panel-header .sidebar-title {
  margin: 0;
  font-size: 1.25rem;
}

.settings-close {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  font-size: 1.5rem;
  line-height: 1;
  background: #0f3460;
  color: #eee;
  border: 1px solid #1a4a7a;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.settings-close:hover {
  background: #1a4a7a;
}

/* ——— Collapsible sidebar (legacy, kept for content styles) ——— */
.sidebar {
  display: none;
}

.sidebar-content {
  padding: 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.sidebar-title {
  margin: 0 0 0.25rem;
  font-size: 1rem;
  font-weight: 600;
  color: #e0e8f0;
}

.sidebar-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.sidebar-group label {
  font-size: 0.875rem;
  color: #aaa;
}

.sidebar-group input[type="number"] {
  width: 100%;
  max-width: 6rem;
  padding: 0.4rem;
  background: #0f0f1a;
  border: 1px solid #333;
  border-radius: 4px;
  color: #eee;
  font-size: 0.9rem;
}

.sidebar-group input[type="range"] {
  width: 100%;
  accent-color: #4a9eff;
}

.sidebar-group .reverb-value {
  font-size: 0.85rem;
  color: #888;
}

.sidebar-group .sidebar-checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.875rem;
  color: #aaa;
}

.sidebar-group .sidebar-checkbox input {
  margin: 0;
}

.sidebar-group-checkboxes {
  gap: 0.5rem;
}

.sidebar-group-label {
  font-size: 0.8rem;
  color: #888;
  margin-bottom: 0.25rem;
}

.settings-radio-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.settings-radio-group .settings-radio {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: #aaa;
  cursor: pointer;
}

.settings-radio-group .settings-radio input {
  margin: 0;
  accent-color: #4a9eff;
}

.root-note-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.root-note-btn {
  padding: 0.35rem 0.5rem;
  min-width: 2.25rem;
  font-size: 0.75rem;
  background: #0f0f1a;
  color: #aaa;
  border: 1px solid #333;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.root-note-btn:hover {
  background: #1a2530;
  color: #eee;
  border-color: #444;
}

.root-note-btn.selected {
  background: #1a4a7a;
  border-color: #4a9eff;
  color: #fff;
}

.transpose-sa-label {
  display: block;
  font-size: 0.7rem;
  color: #888;
  margin-bottom: 0.35rem;
}

.root-note-control {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.root-note-control .root-note-arrow {
  padding: 0.35rem 0.5rem;
  background: #fff;
  color: #222;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
}

.root-note-control .root-note-arrow:hover {
  background: #eee;
}

.root-note-display {
  font-weight: bold;
  font-size: 1rem;
  color: #eee;
  min-width: 1.5rem;
  text-align: center;
}

.instrument-btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.instrument-btn {
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  font-size: 1.4rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0f0f1a;
  color: #aaa;
  border: 1px solid #333;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.1s;
}

.instrument-btn:hover {
  background: #1a2530;
  color: #eee;
  border-color: #444;
}

.instrument-btn.selected {
  background: #1a4a7a;
  border-color: #4a9eff;
  color: #fff;
}

.sidebar-checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: #c0c8d0;
  cursor: pointer;
}

.sidebar-checkbox input {
  margin: 0;
}

/* Raga description rows: hide when checkbox unchecked */
.raga-scale-row.raga-row-hidden {
  display: none !important;
}

.top-section .raga-info {
  padding: 0.35rem 0;
}

.split {
  display: flex;
  flex: 1;
  min-height: 0;
}

.left-panel,
.right-panel {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  padding: 1rem;
  gap: 1rem;
}

.left-panel {
  border-right: 1px solid #0f3460;
}

.right-panel {
  min-width: 0;
}

.raga-info {
  padding: 0.5rem 0;
}

.raga-number {
  font-size: 0.875rem;
  color: #888;
}

.raga-name {
  font-size: 1.25rem;
  font-weight: 600;
}

.raga-scale {
  font-size: 0.9rem;
  color: #aaa;
  font-family: ui-monospace, monospace;
}

.raga-scale-row {
  margin-top: 0.2rem;
}

.raga-scale-label {
  font-size: 0.8rem;
  color: #888;
  margin-right: 0.35rem;
}

.raga-scale-western {
  color: #b8c8e0;
}

.raga-phrase {
  margin: 0.6rem 0 0.4rem;
  font-size: 0.85rem;
  line-height: 1.4;
  color: #b0b8c8;
  font-style: italic;
}

.raga-meta-row {
  margin-top: 0.25rem;
  font-size: 0.8rem;
}

.raga-meta-label {
  color: #888;
  margin-right: 0.35rem;
}

.raga-meta {
  color: #a0a8b8;
}

.nav-buttons {
  display: flex;
  gap: 0.5rem;
}

.nav-buttons button,
.dial-btn {
  padding: 0.5rem 0.75rem;
  background: #0f3460;
  color: #eee;
  border: 1px solid #1a4a7a;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
}

.dial .dial-btn {
  background: transparent;
  border: none;
  color: inherit;
}

.dial .dial-btn:hover {
  background: rgba(255, 255, 255, 0.08);
}

.nav-buttons button:hover {
  background: #1a4a7a;
}

.axis-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.axis-row {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.axis-row span:first-child,
.m-toggle .axis-label {
  min-width: 2.5rem;
  font-size: 0.875rem;
}
.axis-row .axis-name {
  min-width: 0;
  flex-shrink: 0;
  margin-right: 0.25rem;
}

.axis-nav button {
  padding: 0.25rem 0.5rem;
  min-width: 2rem;
}

.m-toggle {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.m-toggle .m-btn {
  padding: 0.25rem 0.6rem;
  min-width: 2.5rem;
}

.m-toggle .m-btn.active {
  background: #1a4a7a;
  border-color: #4a9eff;
  color: #fff;
}

/* Raga selection panel: search + list */
.raga-select-panel {
  flex: 1 1 200px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.raga-search-label {
  font-size: 0.875rem;
  color: #aaa;
}

.raga-search-input {
  width: 100%;
  padding: 0.4rem 0.5rem;
  background: #0f0f1a;
  border: 1px solid #333;
  border-radius: 6px;
  color: #eee;
  font-size: 0.9rem;
}

.raga-list-container {
  max-height: 180px;
  overflow-y: auto;
  border: 1px solid #333;
  border-radius: 6px;
  background: #0f0f1a;
}

.raga-list {
  list-style: none;
  margin: 0;
  padding: 0.25rem 0;
}

.raga-list-item {
  padding: 0.35rem 0.5rem;
  font-size: 0.875rem;
  color: #ccc;
  cursor: pointer;
}

.raga-list-item:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.raga-list-item.selected {
  background: #1a4a7a;
  color: #fff;
}

.raga-equivalent-row {
  display: none;
}

/* ——— Piano: white keys in flow, black keys between (50% overlap each side) ——— */
.piano-container {
  width: 100%;
  flex: 1 1 0;
  min-height: 200px;
  display: flex;
  align-items: stretch;
  justify-content: stretch;
  padding: 0.5rem 0;
}

.piano {
  display: flex;
  align-items: stretch;
  flex: 1;
  width: 100%;
  position: relative;
  background: #1a1a2e;
  min-height: 180px;
}

/* White keys: equal flex so they share space; black keys sit between them */
.piano-key.white {
  flex: 1;
  min-width: 0;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: stretch;
  padding: 0.5rem 0.15rem 0.6rem;
  border: 1px solid #333;
  border-radius: 0 0 6px 6px;
  cursor: default;
  transition: background 0.15s, box-shadow 0.15s;
  user-select: none;
  height: 100%;
  background: #f5f5f5;
  color: #222;
  z-index: 0;
  margin-right: 1px;
  border-right: 1px solid #999;
}

.piano-key.white:last-of-type {
  margin-right: 0;
}

/* Black keys: narrower with gap between, opaque; centered between white keys (14 whites = 2 octaves) */
.piano-key.black {
  position: absolute;
  width: 6%;
  height: 62%;
  top: 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: stretch;
  padding: 0.5rem 0.15rem 0.6rem;
  border: 1px solid #333;
  border-radius: 0 0 6px 6px;
  cursor: default;
  transition: background 0.15s, box-shadow 0.15s;
  user-select: none;
  background: #2a2a2a;
  color: #ddd;
  z-index: 2;
  box-sizing: border-box;
}

/* Black keys: narrower; 14 white keys = 2 octaves. left = (pos/14)*100 - 3 */
.piano-key.black[data-black-index="1"] { left: 4.14%; }
.piano-key.black[data-black-index="2"] { left: 11.28%; }
.piano-key.black[data-black-index="3"] { left: 25.57%; }
.piano-key.black[data-black-index="4"] { left: 32.71%; }
.piano-key.black[data-black-index="5"] { left: 39.86%; }
.piano-key.black[data-black-index="6"] { left: 54.14%; }
.piano-key.black[data-black-index="7"] { left: 61.28%; }
.piano-key.black[data-black-index="8"] { left: 75.57%; }
.piano-key.black[data-black-index="9"] { left: 82.71%; }
.piano-key.black[data-black-index="10"] { left: 89.86%; }

/* Key labels at bottom of key: left = Carnatic, right = Western */
.piano-key .key-labels {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  width: 100%;
  min-width: 0;
  padding: 0.2rem 0.25rem 0.25rem;
  overflow: hidden;
  gap: 0.25rem;
}

/* Single system: show one label centered */
#piano.piano-labels-carnatic .piano-key .key-labels {
  justify-content: center;
}

#piano.piano-labels-carnatic .piano-key .western {
  display: none;
}

#piano.piano-labels-carnatic .piano-key .carnatic {
  text-align: center;
}

#piano.piano-labels-western .piano-key .key-labels {
  justify-content: center;
}

#piano.piano-labels-western .piano-key .carnatic {
  display: none;
}

#piano.piano-labels-western .piano-key .western {
  text-align: center;
}

.piano-key .carnatic {
  font-size: 0.6rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.02em;
  min-width: 0;
  text-align: left;
  flex: 0 1 auto;
}

.piano-key .western {
  font-size: 0.55rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.02em;
  min-width: 0;
  text-align: right;
  flex: 0 1 auto;
}

.piano-key.dimmed .key-labels {
  display: none;
}

.piano-key.highlighted .carnatic,
.piano-key.highlighted .western,
.piano-key.playing .carnatic,
.piano-key.playing .western,
.piano-key.black .carnatic,
.piano-key.black .western {
  color: #fff;
}

.piano-key.white .carnatic,
.piano-key.white .western {
  color: #000;
}

.piano-key.white.upper-sa {
  border-left: 2px solid #555;
}

.piano-key.white.upper-sa .carnatic {
  font-size: 0.7rem;
}

.piano-key.white.upper-sa .western {
  font-size: 0.6rem;
}

/* Black key labels */
.piano-key.black .carnatic,
.piano-key.black .western {
  font-size: 0.5rem;
  font-weight: 700;
}

.piano-key.highlighted {
  box-shadow: inset 0 0 0 2px currentColor;
}

/* Piano key colors: lighter tints for white keys, darker for black keys; labels stay white bold */
.piano-key.highlighted.scale-s {
  background: #e8d88a;
  color: #1a1a2e;
  border-color: #c9a227;
  box-shadow: inset 0 0 0 2px #c9a227;
}

.piano-key.highlighted.scale-rg {
  background: #7bc99e;
  color: #0a1a12;
  border-color: #3d9d6b;
  box-shadow: inset 0 0 0 2px #3d9d6b;
}

.piano-key.highlighted.scale-m {
  background: #7eb8e8;
  color: #0a1629;
  border-color: #4a90d9;
  box-shadow: inset 0 0 0 2px #4a90d9;
}

.piano-key.highlighted.scale-p {
  background: #e8d88a;
  color: #1a1a2e;
  border-color: #c9a227;
  box-shadow: inset 0 0 0 2px #c9a227;
}

.piano-key.highlighted.scale-dn {
  background: #b894d4;
  color: #1a0a22;
  border-color: #9b59b6;
  box-shadow: inset 0 0 0 2px #9b59b6;
}

.piano-key.black.highlighted.scale-s {
  background: #8b6914;
  color: #fff;
  box-shadow: inset 0 0 0 2px #c9a227;
}

.piano-key.black.highlighted.scale-rg {
  background: #2d7a4d;
  color: #fff;
  box-shadow: inset 0 0 0 2px #3d9d6b;
}

.piano-key.black.highlighted.scale-m {
  background: #2a5f94;
  color: #fff;
  box-shadow: inset 0 0 0 2px #4a90d9;
}

.piano-key.black.highlighted.scale-p {
  background: #8b6914;
  color: #fff;
  box-shadow: inset 0 0 0 2px #c9a227;
}

.piano-key.black.highlighted.scale-dn {
  background: #5c3470;
  color: #fff;
  box-shadow: inset 0 0 0 2px #9b59b6;
}

.piano-key.dimmed {
  pointer-events: none;
}

.piano-key:not(.dimmed).white {
  cursor: pointer;
}

.piano-key:not(.dimmed).black {
  cursor: pointer;
}

.piano-key:not(.dimmed):active,
.piano-key:not(.dimmed).highlighted:hover {
  filter: brightness(0.95);
}

/* Playing state: brighter shade of the key's scale color; white keys z-index 1, black z-index 2 */
.piano-key.playing {
  z-index: 1;
}

.piano-key.playing.scale-s {
  background: #f5e6a8 !important;
  box-shadow: 0 0 12px 2px #c9a227, inset 0 0 8px rgba(201, 162, 39, 0.5);
  color: #1a1a2e;
}

.piano-key.playing.scale-rg {
  background: #9ee0b8 !important;
  box-shadow: 0 0 12px 2px #3d9d6b, inset 0 0 8px rgba(61, 157, 107, 0.5);
  color: #0a1a12;
}

.piano-key.playing.scale-m {
  background: #a8d4f5 !important;
  box-shadow: 0 0 12px 2px #4a90d9, inset 0 0 8px rgba(74, 144, 217, 0.5);
  color: #0a1629;
}

.piano-key.playing.scale-p {
  background: #f5e6a8 !important;
  box-shadow: 0 0 12px 2px #c9a227, inset 0 0 8px rgba(201, 162, 39, 0.5);
  color: #1a1a2e;
}

.piano-key.playing.scale-dn {
  background: #d4b8ec !important;
  box-shadow: 0 0 12px 2px #9b59b6, inset 0 0 8px rgba(155, 89, 182, 0.5);
  color: #1a0a22;
}

.piano-key.black.playing {
  z-index: 2;
}

.piano-key.black.playing.scale-s {
  background: #b8921f !important;
  box-shadow: 0 0 10px 2px #c9a227, inset 0 0 6px rgba(201, 162, 39, 0.5);
  color: #fff;
}

.piano-key.black.playing.scale-rg {
  background: #2d8a55 !important;
  box-shadow: 0 0 10px 2px #3d9d6b, inset 0 0 6px rgba(61, 157, 107, 0.5);
  color: #fff;
}

.piano-key.black.playing.scale-m {
  background: #2d7cc4 !important;
  box-shadow: 0 0 10px 2px #4a90d9, inset 0 0 6px rgba(74, 144, 217, 0.5);
  color: #fff;
}

.piano-key.black.playing.scale-p {
  background: #b8921f !important;
  box-shadow: 0 0 10px 2px #c9a227, inset 0 0 6px rgba(201, 162, 39, 0.5);
  color: #fff;
}

.piano-key.black.playing.scale-dn {
  background: #6b3d7d !important;
  box-shadow: 0 0 10px 2px #9b59b6, inset 0 0 6px rgba(155, 89, 182, 0.5);
  color: #fff;
}

/* Scale playback */
.scale-playback {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.tempo-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tempo-row label {
  font-size: 0.9rem;
}

.reverb-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.reverb-row label {
  font-size: 0.9rem;
}

#reverbInput {
  width: 8rem;
  accent-color: #4a9eff;
}

.reverb-value {
  font-size: 0.9rem;
  color: #aaa;
  min-width: 2.5rem;
}

#bpmInput {
  width: 4rem;
  padding: 0.4rem;
  background: #0f0f1a;
  border: 1px solid #333;
  border-radius: 4px;
  color: #eee;
  font-size: 0.9rem;
}

.play-buttons {
  display: flex;
  gap: 0.5rem;
  justify-content: space-between;
  align-items: center;
}

.play-transpose-label {
  font-size: 0.9rem;
  font-weight: bold;
  color: #fff;
  white-space: nowrap;
}

.play-transpose-control {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.play-transpose-control .transpose-arrow {
  padding: 0.35rem 0.6rem;
  background: transparent;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  font-weight: bold;
}

.play-transpose-control .transpose-arrow:hover {
  color: #eee;
}

.play-buttons button {
  padding: 0.5rem 1rem;
  background: #0f3460;
  color: #eee;
  border: 1px solid #1a4a7a;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
}

.play-buttons button:hover {
  background: #1a4a7a;
}

.play-buttons button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

@media (min-width: 901px) {
  body {
    display: flex;
    justify-content: center;
    align-items: flex-start;
  }

  .app {
    width: 100%;
    max-width: 600px;
    margin: 0;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08);
  }
}

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

  .left-panel {
    border-right: none;
    border-bottom: 1px solid #0f3460;
  }
}