button, 
input[type="button"], 
input[type="submit"], 
input[type="reset"],
.role-btn,
.floating-qa-btn {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  overflow-x: hidden;
}

/* ==========================================================================
   HERO BANNER
   ========================================================================== */
.hero {
  text-align: center;
  max-width: 720px;
  margin: 20px 20px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-left: auto;
  margin-right: auto;
}

.hero .eyebrow {
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 3.2px;
  text-transform: uppercase;
  color: var(--ink-dev, #5c5f3f);
  margin-bottom: 16px;
  user-select: none;
}

.hero h1 {
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 2.1rem;
  letter-spacing: -0.5px;
  color: #212918;
  margin-bottom: 12px;
  user-select: none;
}

.title-rule {
  width: 92px;
  height: 3px;
  background-color: #212918;
  margin: 0 auto 6px;
}

.title-rule-thin {
  width: 92px;
  height: 1px;
  background-color: var(--rule-line, rgba(43, 51, 31, 0.3));
  margin: 0 auto;
}

/* ==========================================================================
   INTRO NOTE CARD
   ========================================================================== */
.note-card {
  background-color: var(--parchment, #efe8d3);
  border: 1px solid var(--parchment-edge, #ddd3ae);
  border-radius: 4px;
  padding: 26px 32px;
  max-width: 850px;
  width: calc(100% - 40px);
  box-shadow: 0 12px 26px rgba(43, 51, 31, 0.18);
  position: relative;
  margin: 0 auto 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  box-sizing: border-box;
}

.note-card::before {
  content: "";
  position: absolute;
  top: 9px; left: 9px; right: 9px; bottom: 9px;
  border: 1px solid rgba(43, 51, 31, 0.15);
  border-radius: 2px;
  pointer-events: none;
}

.note-card p {
  font-size: 0.98rem;
  line-height: 1.6;
  color: #2d3620;
  margin: 0;
}

.note-card .info-icon {
  margin-top: 2px;
}

/* ==========================================================================
   SHARED WIDGET CARD
   ========================================================================== */
.widget-card {
  background-color: var(--parchment, #efe8d3);
  border: 1px solid var(--parchment-edge, #ddd3ae);
  border-radius: 4px;
  box-shadow: 0 14px 30px rgba(43, 51, 31, 0.18);
  position: relative;
}

.widget-card::before {
  content: "";
  position: absolute;
  top: 9px; left: 9px; right: 9px; bottom: 9px;
  border: 1px solid rgba(43, 51, 31, 0.15);
  border-radius: 2px;
  pointer-events: none;
}

.music-layout-wrapper {
  max-width: 900px;
  margin: 0 auto 60px;
  padding: 0 20px;
  box-sizing: border-box;
}

.music-card {
  padding: 40px;
  color: var(--text-main, #2b331f);
  line-height: 1.7;
}

select, select option {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

button, 
input[type="button"], 
input[type="submit"], 
input[type="reset"] {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.music-card p {
    margin-bottom: 30px;
    font-size: 1.02rem;
    color: #2d3620;
}

.music-card label {
    display: block;
    font-family: 'Fraunces', serif;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--ink-dev, #5c5f3f);
    font-size: 0.9rem;
}

.studio-toolbar {
    display: flex;
    gap: 20px;
    background: transparent;
    padding: 0;
    border: none;
    border-radius: 0;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.toolbar-section {
    flex: 1;
    min-width: 100%;
    background: #f6f1e2;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid var(--parchment-edge, #ddd3ae);
    box-sizing: border-box;
}

.toggle-buttons, .db-controls {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* The Save/Load and Project Name/Composer rows are inline-styled flex
   rows in the HTML (display:flex is set inline) - this adds the wrap
   behavior that's missing from those inline styles without needing to
   touch the markup. */
.db-controls > div {
    flex-wrap: wrap;
}

.mode-btn {
    flex: 1;
    min-width: 0;
    background: var(--parchment, #efe8d3);
    color: var(--ink-dev, #5c5f3f);
    border: 1.5px solid var(--ink-dev, #5c5f3f);
    padding: 10px;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s;
}

.mode-btn:hover {
    border-color: var(--ink-live, #8a3b2b);
}

.mode-btn.active {
    background-color: rgba(138, 59, 43, 0.5); 
    color: var(--parchment, #efe8d3);
    border-color: rgba(138, 59, 43, 0.5);
    font-weight: bold;
}

.db-controls input {
    flex: 1;
    min-width: 0;
    background: var(--parchment, #efe8d3);
    border: 1px solid var(--parchment-edge, #ddd3ae);
    color: var(--text-main, #2b331f);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 16px;
    outline: none;
    height: 38px;
    box-sizing: border-box;
}

.db-controls input:focus {
    border-color: var(--ink-live, #8a3b2b);
}

.db-btn {
    background: transparent;
    color: var(--ink-dev, #5c5f3f);
    border: 1.5px solid var(--ink-dev, #5c5f3f);
    padding: 8px 12px;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s;
    height: 38px;
    box-sizing: border-box;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
}

.db-btn:hover {
    border-color: var(--ink-live, #8a3b2b);
}

.save-btn {
    color: var(--ink-live, #8a3b2b);
    border-color: var(--ink-live, #8a3b2b);
}
.save-btn:hover { border-color: var(--ink-live, #8a3b2b); }
.load-btn:hover { border-color: var(--ink-live, #8a3b2b); }

.instrument-clef-row {
    margin-top: 5px;
}

.instrument-clef-row .clef-selector {
    display: flex;
    gap: 8px;
    width: 100%;
    flex-wrap: wrap;
}

.instrument-clef-row .mode-btn {
    background-color: #f6f1e2;
    color: var(--text-main, #2b331f);
    border: 1px solid var(--parchment-edge, #ddd3ae);
    padding: 6px 10px;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 38px;
    box-sizing: border-box;
    white-space: nowrap;
    min-width: 0;
    flex: 1 1 auto;
}

.instrument-clef-row .mode-btn:hover {
    border-color: var(--ink-live, #8a3b2b);
}

.instrument-clef-row .mode-btn.active {
    background-color: rgba(138, 59, 43, 0.5); 
    color: var(--parchment, #efe8d3);
    border-color: rgba(138, 59, 43, 0.5);
    font-weight: bold;
}

.dot-btn {
    flex: 0 0 42px;
    min-width: 42px;
    margin-left: 20px;
    background-color: #f6f1e2;
    color: var(--text-main, #2b331f);
    border: 1px solid var(--parchment-edge, #ddd3ae);
    padding: 6px;
    border-radius: 6px;
    font-size: 1.4rem;
    font-weight: bold;
    cursor: pointer;
    text-align: center;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.15s, color 0.15s, border-color 0.15s;
}

.dot-btn:hover {
    border-color: var(--ink-live, #8a3b2b);
}

.dot-btn.active {
    background-color: rgba(138, 59, 43, 0.5); 
    color: var(--parchment, #efe8d3);
    border-color: rgba(138, 59, 43, 0.5);
    font-weight: bold;
}

.builder-controls {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.control-group {
    flex: 1;
    min-width: 180px;
	margin-bottom: 0;
	flex-direction: row;
	align-items: center;
	gap: 8px;
}

.full-width-group {
    flex: 1 1 100%;
}

.preset-dropdown {
    width: 100%;
    padding: 8px 12px;
    background-color: var(--parchment, #efe8d3);
    border: 1px solid var(--parchment-edge, #ddd3ae);
    border-radius: 6px;
    color: var(--text-main, #2b331f);
    font-size: 0.9rem;
    outline: none;
}

.octave-selector, 
.duration-selector, 
.accidental-selector {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

.oct-btn, 
.dur-btn, 
.acc-btn {
    flex: 1;
    min-width: 60px;
    background-color: #f6f1e2;
    color: var(--text-main, #2b331f);
    border: 1px solid var(--parchment-edge, #ddd3ae);
    padding: 8px 6px;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    text-align: center;
    transition: background-color 0.15s, color 0.15s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.oct-btn:hover,
.dur-btn:hover,
.acc-btn:hover {
    border-color: var(--ink-live, #8a3b2b);
}

.dur-btn {
    min-width: 95px;
    gap: 4px;
    padding: 6px 8px;
    font-size: 0.78rem;
}

.acc-btn {
    gap: 4px;
}

.oct-btn.active, 
.dur-btn.active, 
.acc-btn.active {
    background-color: rgba(138, 59, 43, 0.5); 
    color: var(--parchment, #efe8d3);
    border-color: rgba(138, 59, 43, 0.5);
    font-weight: bold;
}

.note-icon, 
.acc-icon {
    font-family: "Segoe UI Symbol", "Apple Symbols", "DejaVu Sans", "Bravura Text", sans-serif;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    vertical-align: middle;
}

.note-icon {
    margin-right: 4px;
}

.note-icon img {
    height: 1.3rem;
    width: auto;
    display: block;
}

.dur-btn[data-dur="4"] .note-icon img {
    height: 0.4rem;
	position: relative;
    top: 6px;
}

.acc-icon {
    font-size: 1.2rem;
    transform: translateY(-1px);
}

.note-pad-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
    margin-bottom: 12px;
}

.note-key {
    background-color: #f6f1e2;
    color: var(--ink-dev, #5c5f3f);
    border: 1.5px solid var(--ink-dev, #5c5f3f);
    padding: 8px 12px;
    border-radius: 6px;
    font-weight: bold;
    font-size: 1.1rem;
    cursor: pointer;
    transition: transform 0.08s, background-color 0.15s;
}

.note-letter {
  font-size: 1rem;
  font-weight: bold;
}

.solfege {
  font-size: 0.75rem;
  opacity: 0.85;
}

.note-key:hover {
	border-color: var(--ink-live, #8a3b2b);
}

.note-key:active {
	transform: scale(0.94);
	background-color: rgba(138, 59, 43, 0.5);
	color: var(--parchment, #efe8d3); 
    border-color: var(--ink-live, #8a3b2b);
}

.composition-actions {
    display: flex;
    gap: 8px;
    margin-bottom: 15px;
}

.action-btn {
    flex: 1;
    background: #f6f1e2;
    color: var(--text-main, #2b331f);
    border: 1px solid var(--parchment-edge, #ddd3ae);
    padding: 8px;
    border-radius: 6px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: border-color 0.2s;
}

.action-btn:hover {
    border-color: var(--ink-live, #8a3b2b);
}

.action-btn.warning:hover { border-color: var(--ink-live, #8a3b2b); }
.action-btn.danger:hover { border-color: var(--ink-live, #8a3b2b); }

.action-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    border-color: var(--parchment-edge, #ddd3ae);
    color: #888888;
}
.action-btn:disabled:hover {
    border-color: var(--parchment-edge, #ddd3ae);
}

.horizontal-controls {
    display: flex;
    flex-direction: row;
    align-items: flex-end;
    gap: 15px;
    flex-wrap: wrap;
}

.horizontal-controls .control-item {
    display: flex;
    flex-direction: column;
}

.barline-controls {
    display: flex;
    gap: 6px;
    width: 100%;
}

.transpose-stepper {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 38px;
}

.trans-step-btn {
  background-color: #f6f1e2;
  color: var(--text-main, #2b331f);
  border: 1px solid var(--parchment-edge, #ddd3ae);
  padding: 0 12px;
  height: 100%;
  border-radius: 6px;
  font-weight: bold;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all 0.15s;
}

.trans-step-btn:hover {
  border-color: var(--ink-live, #8a3b2b);
}

.trans-step-btn:active {
  transform: scale(0.95);
}

.transpose-badge {
  flex: 1;
  background-color: var(--parchment, #efe8d3);
  border: 1px solid var(--parchment-edge, #ddd3ae);
  border-radius: 6px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-weight: bold;
  font-size: 0.85rem;
  color: var(--ink-dev, #5c5f3f);
  min-width: 130px;
  box-sizing: border-box;
}

.pdf-btn, .audio-btn {
    background-color: transparent !important;
    color: var(--ink-dev, #5c5f3f) !important;
    border: 1.5px solid var(--ink-dev, #5c5f3f) !important;
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.pdf-btn:hover, .audio-btn:hover {
    border-color: var(--ink-live, #8a3b2b) !important;
}

select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-color: var(--parchment, #efe8d3);
    color: var(--text-main, #2b331f);
    border: 1px solid var(--parchment-edge, #ddd3ae);
    padding: 8px 36px 8px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    outline: none;
    cursor: pointer;
    box-sizing: border-box;
    height: 38px;
    width: 100%;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235c5f3f' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 14px;
    transition: border-color 0.2s, background-color 0.2s;
    accent-color: var(--ink-live, #8a3b2b);
}

select:hover {
    border-color: var(--ink-live, #8a3b2b);
}

select:focus {
    outline: none;
    border-color: var(--ink-live, #8a3b2b);
    box-shadow: 0 0 0 2px rgba(138, 59, 43, 0.15);
}

select option {
    background-color: var(--parchment, #efe8d3) !important;
    color: var(--text-main, #2b331f) !important;
    padding: 10px;
}

select option:checked,
select option:hover {
    background-color: var(--parchment-edge, #ddd3ae) !important;
    color: var(--ink-live, #8a3b2b) !important;
}

.canvas-wrapper {
    width: 100%;
    background-color: #e3d9bc;
    border-radius: 8px;
    border: 1px solid var(--parchment-edge, #ddd3ae);
    overflow: hidden;
    margin-bottom: 20px;
}

#visualizerCanvas {
    display: block;
    width: 100%;
    height: 90px;
}

.sheet-container {
    background: #f6f1e2;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid var(--parchment-edge, #ddd3ae);
}

.score-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}
.score-toolbar .preset-dropdown {
	min-width: 260px;
}

.score-toolbar-actions {
    display: flex;
	align-items: center;
    gap: 8px;
	margin-top: 20px;
}

.score-toolbar .control-group {
	flex: unset;
    min-width: auto;
    margin-bottom: 0;
    flex-direction: row;
    align-items: center;
    gap: 8px;
}

.score-toolbar .control-group label {
    white-space: nowrap;
    margin-bottom: 0;
}

.play-btn {
    background-color: transparent !important;
    color: var(--ink-live, #8a3b2b) !important;
    border: 2px solid var(--ink-live, #8a3b2b) !important;
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
}

.play-btn:hover {
    border-color: var(--ink-live, #8a3b2b) !important;
}

.stop-btn {
    background-color: transparent !important;
    color: var(--ink-live, #8a3b2b) !important;
    border: 1.5px solid var(--ink-live, #8a3b2b) !important;
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
}

.stop-btn:hover {
    border-color: var(--ink-live, #8a3b2b) !important;
}

.stop-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    border-color: var(--parchment-edge, #ddd3ae) !important;
    color: #888888 !important;
}

.status-box {
    font-size: 0.88rem;
    color: var(--ink-dev, #5c5f3f);
    margin-bottom: 10px;
    min-height: 18px;
}

#sheetOutput {
    background-color: #ffffff !important;
    padding: 20px;
    border-radius: 8px;
    min-height: 140px;
    overflow-x: auto;
    overflow-y: hidden;
    color: #000000 !important;
    display: flex;
    justify-content: center;
    align-items: center;
}

#sheetOutput svg {
    display: block;
    width: 100%;
    height: auto;
    max-width: 100%;
    box-sizing: border-box;
}

/* Playback cursor: abcjs adds/removes this class on the note currently
   playing (see handleCursorEvent in music-lab-audio.js). */
#sheetOutput svg .abcjs-highlight {
    fill: var(--ink-live, #8a3b2b) !important;
}

.abc-details {
    margin-top: 15px;
    color: var(--ink-dev, #5c5f3f);
    font-size: 0.88rem;
}

.abc-details summary {
    cursor: pointer;
    font-weight: bold;
    margin-bottom: 8px;
}

.abc-details textarea {
    width: 100%;
    height: 200px;
    background: #e3d9bc;
    border: 1px solid var(--parchment-edge, #ddd3ae);
    border-radius: 6px;
    color: var(--text-main, #2b331f);
    font-family: monospace;
    font-size: 16px;
    padding: 8px;
    box-sizing: border-box;
    resize: vertical;
}

#bpmInput {
  background-color: var(--parchment, #efe8d3);
  color: var(--text-main, #2b331f);
  border: 1px solid var(--parchment-edge, #ddd3ae);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 16px;
  font-weight: 600;
  text-align: center;
  outline: none;
  height: 38px;
  box-sizing: border-box;
  transition: all 0.2s ease;
}

#bpmInput:hover {
  border-color: var(--ink-live, #8a3b2b);
}

#bpmInput:focus {
  border-color: var(--ink-live, #8a3b2b);
}

#bpmInput::-webkit-outer-spin-button,
#bpmInput::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

#bpmInput[type=number] {
  -moz-appearance: textfield;
  appearance: textfield;
}

.metro-btn {
    height: 38px;
    background-color: var(--parchment, #efe8d3);
    color: var(--text-main, #2b331f);
    border: 1px solid var(--parchment-edge, #ddd3ae);
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: bold;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: all 0.2s;
    width: 100%;
}

.metro-btn:hover {
    border-color: var(--ink-live, #8a3b2b);
    color: var(--ink-live, #8a3b2b);
}

.metro-btn.active {
    background-color: rgba(138, 59, 43, 0.5);
    color: var(--parchment, #efe8d3);
    border-color: rgba(138, 59, 43, 0.5);
}

.metro-icon {
    font-size: 1.1rem;
}

.tempo-stepper {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 38px;
}

.tempo-step-btn {
  background-color: var(--parchment, #efe8d3);
  color: var(--text-main, #2b331f);
  border: 1px solid var(--parchment-edge, #ddd3ae);
  padding: 0 12px;
  height: 100%;
  border-radius: 6px;
  font-weight: bold;
  font-size: 1.1rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
  flex-shrink: 0;
}

.tempo-step-btn:hover {
  border-color: var(--ink-live, #8a3b2b);
}

.tempo-step-btn:active {
  transform: scale(0.95);
}

.ml-svg-icon {
    width: 18px;
    height: 18px;
    display: inline-block;
    vertical-align: middle;
    margin-right: 6px;
    transform: translateY(-1px);
    color: #3b2f2f;
    fill: currentColor;
    stroke: currentColor;
	stroke-width: 0.1px;
    stroke-linejoin: round;
}

#paper {
    background-color: #fffdf9;
    border-radius: px;
    padding: 1px;
}

#paper svg {
    background-color: #fffdf9;
}

@media screen and (max-width: 921px) {
  .tempo-stepper {
    height: 44px;
  }
}

@media screen and (min-width: 922px) {
    .toolbar-section {
        min-width: 240px;
    }

    .horizontal-controls {
        flex-wrap: nowrap;
    }
    .horizontal-controls .control-item:nth-child(1) { flex: 0 0 100px; } 
    .horizontal-controls .control-item:nth-child(2) { flex: 0 0 180px; } 
    .horizontal-controls .control-item:nth-child(3) { flex: 0 0 160px; } 
    .horizontal-controls .control-item:nth-child(4) { flex: 1; min-width: 150px; } 

    .octave-row-controls {
        flex-wrap: nowrap;
    }
    .octave-row-controls .control-item.tempo-item { flex: 0 0 100px; }
    .octave-row-controls .control-item.metro-item { flex: 0 0 110px; }
    .octave-row-controls .control-item.octave-item { flex: 1; min-width: 250px; }
}

@media screen and (max-width: 921px) {
    .music-layout-wrapper {
        width: 100%;
        padding: 0 10px;
    }

    .music-card {
        padding: 20px 15px;
        margin: 0;
        border-radius: 4px;
    }

    .hero h1 {
        font-size: 1.7rem;
    }

    .studio-toolbar {
        flex-direction: column-reverse;
        gap: 15px;
    }

    .toolbar-section {
        min-width: 100%;
    }

    .horizontal-controls {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
    }

    .horizontal-controls .control-item:nth-child(1) {
        order: 1;
        flex: 1 1 calc(50% - 6px) !important;
        width: calc(50% - 6px) !important;
    }
    .horizontal-controls .control-item:nth-child(2) {
        order: 2;
        flex: 1 1 calc(50% - 6px) !important;
        width: calc(50% - 6px) !important;
    }

    .horizontal-controls .clef-control-item {
        order: 3;
        flex: 1 1 100% !important;
        width: 100% !important;
    }

    .horizontal-controls .control-item:nth-child(3) {
        order: 3;
        flex: 1 1 100% !important;
        width: 100% !important;
    }

    .horizontal-controls .control-item:nth-child(4) {
        order: 4;
        flex: 1 1 100% !important;
        width: 100% !important;
    }

    .octave-row-controls {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
    }

    .octave-row-controls .control-item.octave-item {
        flex: 1 1 100% !important;
        min-width: 100% !important;
        width: 100% !important;
    }

    .octave-row-controls .control-item.tempo-item,
    .octave-row-controls .control-item.metro-item {
        flex: 1 1 calc(50% - 6px) !important;
        min-width: calc(50% - 6px) !important;
        width: calc(50% - 6px) !important;
    }

    select, 
    #bpmInput, 
    .metro-btn, 
    .trans-step-btn, 
    .transpose-badge {
        height: 44px;
        font-size: 1rem;
    }

    .transpose-stepper {
        height: 44px;
    }

    #barlineSelect {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }
}

@media screen and (max-width: 650px) {
    .note-pad-grid { 
        grid-template-columns: repeat(4, 1fr); 
    }
    .studio-toolbar { 
        flex-direction: column-reverse; 
    }
    .dur-btn { 
        min-width: 45%; 
    }
}

@media screen and (max-width: 600px) {
    .note-pad-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 6px;
    }

    .note-key {
        padding: 12px 6px;
        font-size: 1rem;
    }

    .composition-actions {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .composition-actions button {
        width: 100%;
        padding: 10px 8px;
        font-size: 0.85rem;
        box-sizing: border-box;
    }

    /* Buttons flow in natural source order (Line Break, Undo, Redo, Clear,
       Export PDF, Export Audio) - 2 per row, 3 rows. Kept order-based
       instead of pinning individual buttons so adding/removing an action
       button doesn't silently break the layout. */

    .octave-selector {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 4px;
    }

    .oct-btn {
        min-width: unset;
        padding: 10px 4px;
    }

    .duration-selector {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
    }

    .dur-btn {
        min-width: unset;
        width: 100%;
    }

    .dot-btn {
        margin-left: 0;
        grid-column: span 3;
        height: 40px;
    }
}

@media screen and (max-width: 581px) {
    .horizontal-controls .control-item:nth-child(3),
    .horizontal-controls .control-item:nth-child(4) {
        flex: 1 1 100% !important;
        min-width: 100% !important;
        width: 100% !important;
    }
}

@media screen and (max-width: 400px) {
    .note-pad-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}