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

:root {
  --bg: #1a1a2e;
  --panel: rgba(22, 33, 62, 0.88);
  --panel-strong: #121c33;
  --control-surface: #14395f;
  --input-surface: #225382;
  --border: #2a2a4a;
  --border-strong: #355173;
  --text: #e0e0e0;
  --text-muted: #b8c7d9;
  --text-soft: #8ea0b6;
  --text-faint: #7f91a8;
  --accent: #e2b714;
  --accent-warm: #f0c832;
  --accent-cool: #6ec6ff;
  --danger: #c96c7d;
  --success: #2ecc71;
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --shadow-soft: 0 10px 24px rgba(4, 10, 24, 0.18);
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background:
    radial-gradient(circle at top, rgba(110, 198, 255, 0.08), transparent 28%),
    linear-gradient(180deg, #1b1d34, var(--bg));
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

#app {
  width: 100%;
  max-width: 860px;
  padding: 2rem 1.5rem;
  text-align: center;
}

.app-header {
  margin-bottom: 1.25rem;
}

.app-header-links {
  display: flex;
  justify-content: center;
  gap: 0.85rem;
  margin-bottom: 0.65rem;
  flex-wrap: wrap;
}

.app-header-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-cool);
  text-decoration: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.app-header-link-button {
  padding: 0;
  border: 0;
  background: transparent;
  font: inherit;
  cursor: pointer;
}

.app-header-link:hover {
  text-decoration: underline;
}

.social-share-links {
  display: flex;
  justify-content: center;
  gap: 0.65rem;
  margin-bottom: 0.95rem;
  flex-wrap: wrap;
}

.social-share-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.8rem;
  border: 1px solid rgba(110, 198, 255, 0.25);
  border-radius: 999px;
  background: rgba(20, 57, 95, 0.48);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: transform 120ms ease, border-color 120ms ease, color 120ms ease, background 120ms ease;
}

.social-share-link:hover,
.social-share-link:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(110, 198, 255, 0.55);
  background: rgba(34, 83, 130, 0.7);
  color: var(--text);
}

.social-share-link svg {
  width: 0.95rem;
  height: 0.95rem;
  fill: currentColor;
  flex: 0 0 auto;
}

.app-layout {
  display: grid;
  gap: 1rem;
}

.app-footer {
  margin-top: 1.5rem;
  padding-bottom: 0.2rem;
}

#app-version {
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  opacity: 0.9;
}

h1 {
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--text);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.app-subtitle {
  max-width: 42rem;
  margin: 0.7rem auto 0;
  font-size: 0.98rem;
  line-height: 1.55;
  color: var(--text-muted);
}

.demo-page {
  align-items: flex-start;
}

.demo-app {
  max-width: 980px;
}

.demo-header {
  margin-bottom: 1.5rem;
}

.demo-back-link {
  display: inline-block;
  margin-bottom: 0.9rem;
  color: var(--accent-cool);
  text-decoration: none;
  font-size: 0.84rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.demo-back-link:hover {
  text-decoration: underline;
}

.demo-grid {
  display: grid;
  gap: 1rem;
}

.demo-card {
  text-align: left;
}

.demo-card h2 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.35rem;
}

.demo-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.5;
  margin-bottom: 0.9rem;
}

.demo-video-frame {
  position: relative;
  width: 100%;
  max-width: 720px;
  aspect-ratio: 16 / 9;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-soft);
  background: rgba(0, 0, 0, 0.25);
}

.demo-video-frame-portrait {
  max-width: 420px;
  aspect-ratio: 9 / 16;
}

.demo-video-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
}


.surface-block,
.control-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1rem;
  box-shadow: var(--shadow-soft);
}

.surface-display {
  padding: 1rem;
}

.section-heading {
  display: flex;
  justify-content: flex-start;
  margin-bottom: 0.85rem;
  text-align: left;
}

.section-kicker {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-cool);
}

.selected-keys-summary {
  display: inline;
  margin: -0.2rem 0 0.55rem;
  padding: 0;
  border: 0;
  background: transparent;
  font-size: 0.88rem;
  color: var(--text-faint);
  text-align: left;
  line-height: 1.35;
  cursor: pointer;
  list-style: none;
  transition: color 0.15s;
}

.selected-keys-summary:hover,
.selected-keys-summary:focus-visible {
  color: var(--accent-cool);
}

.selected-keys-summary:focus-visible {
  outline: 2px solid rgba(110, 198, 255, 0.45);
  outline-offset: 4px;
}

.selected-keys-summary::-webkit-details-marker {
  display: none;
}

.display-key-picker#key-picker {
  position: relative;
  padding: 0;
  border: 0;
  background: transparent;
  overflow: visible;
  width: fit-content;
  text-align: left;
}

.display-key-picker-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(7, 16, 26, 0.46);
  backdrop-filter: blur(10px) saturate(0.78);
  -webkit-backdrop-filter: blur(10px) saturate(0.78);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease;
  z-index: 30;
}

.display-key-picker[open] .display-key-picker-backdrop {
  opacity: 1;
  pointer-events: auto;
}

.display-key-picker-panel {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, calc(-50% - 0.5rem));
  width: min(68rem, calc(100vw - 2rem));
  max-height: min(40rem, calc(100vh - 2rem));
  margin-top: 0;
  padding: 1rem 1rem 1.1rem;
  border: 1px solid var(--border-strong);
  border-radius: calc(var(--radius-md) + 0.3rem);
  background: rgba(12, 24, 38, 0.94);
  box-shadow: 0 1.25rem 3rem rgba(0, 0, 0, 0.32);
  overflow: auto;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
  z-index: 31;
}

.display-key-picker[open] .display-key-picker-panel {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%);
}

.display-key-picker-header {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 0.35rem;
}

.display-key-picker-close {
  padding: 0.38rem 0.72rem;
  border: 1px solid rgba(110, 198, 255, 0.28);
  border-radius: 999px;
  background: rgba(110, 198, 255, 0.1);
  color: var(--accent-cool);
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.display-key-picker-close:hover {
  background: rgba(110, 198, 255, 0.18);
  border-color: rgba(110, 198, 255, 0.4);
}

body.key-picker-open {
  overflow: hidden;
}

/* ---- Display ---- */

#display {
  padding: 0.5rem 0.25rem 2.5rem;
  position: relative;
  height: clamp(11rem, 24vw, 13.5rem);
}

.display-placeholder {
  position: absolute;
  inset: 0.25rem 0.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  pointer-events: none;
}

.display-placeholder.hidden {
  display: none;
}

.display-placeholder p {
  max-width: 26rem;
  color: var(--text-faint);
  font-size: 0.95rem;
  line-height: 1.5;
  display: none;
}

.display-quickstart-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  white-space: nowrap;
  padding: 0;
  border: 0;
  background: none;
  color: var(--text-faint);
  font: inherit;
  font-size: 1.18rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(255, 255, 255, 0.18);
  transition: color 0.15s, text-decoration-color 0.15s;
}

.display-quickstart-button.hidden {
  display: none;
}

.display-quickstart-button:hover {
  color: var(--text);
  text-decoration-color: rgba(255, 255, 255, 0.45);
}

#display-columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-rows: auto auto auto;
  justify-items: center;
  align-content: start;
  column-gap: 1.5rem;
  width: 100%;
  min-height: 100%;
}

/* Row 1: headers */
.col-header {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-cool);
  min-height: 1.4rem;
  display: flex;
  align-items: flex-end;
}
#current-header { grid-column: 1; grid-row: 1; }
#next-header    { grid-column: 2; grid-row: 1; }

/* Row 2: key names */
#key-display,
#next-key-display {
  grid-row: 2;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--accent);
  min-height: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: color 0.15s;
}
#key-display      { grid-column: 1; }
#next-key-display  { grid-column: 2; color: var(--accent-cool); }

#key-display:not(:empty)::before,
#next-key-display:not(:empty)::before {
  content: 'key:';
  font-size: 0.72em;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.8;
}

/* Row 3: chord symbols */
#chord-display,
#next-chord-display {
  grid-row: 3;
  margin-top: 0.22rem;
  font-size: 5rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  overflow: visible;
}
#chord-display      { grid-column: 1; }
#next-chord-display  { grid-column: 2; color: var(--text-soft); }

.chord-symbol {
  display: inline-grid;
  grid-auto-flow: column;
  align-items: start;
  column-gap: 0.02em;
}

.chord-symbol-main {
  display: inline-flex;
  align-items: baseline;
}

.chord-symbol-root,
.chord-symbol-root-letter,
.chord-symbol-root-accidental,
.chord-symbol-base,
.chord-symbol-sup {
  display: inline-block;
}

.chord-symbol-root-accidental {
  font-size: 0.78em;
  transform: translateY(-0.18em);
  transform-origin: left bottom;
}

.chord-symbol-base {
  font-size: 0.68em;
  margin-left: 0.04em;
}

.chord-symbol-sup {
  font-size: 0.5em;
  line-height: 1;
  white-space: nowrap;
  color: inherit;
  transform: translateY(-0.12em);
  transform-origin: left bottom;
}

/* Hidden state for next-column cells */
#next-header.hidden,
#next-key-display.hidden,
#next-chord-display.hidden {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}
#next-header:not(.hidden),
#next-key-display:not(.hidden),
#next-chord-display:not(.hidden) {
  opacity: 0.55;
  transition: opacity 0.2s;
}

.display-hide-current #current-header,
.display-hide-current #key-display,
.display-hide-current #chord-display {
  display: none;
}

.display-hide-current #next-header,
.display-hide-current #next-key-display,
.display-hide-current #next-chord-display {
  grid-column: 1 / -1;
}

.display-hide-current #next-header:not(.hidden),
.display-hide-current #next-key-display:not(.hidden),
.display-hide-current #next-chord-display:not(.hidden) {
  opacity: 1;
}

.display-show-both #key-display,
.display-show-both #next-key-display {
  font-size: 1.1rem;
  min-height: 1.5rem;
}

.display-show-both #chord-display,
.display-show-both #next-chord-display {
  font-size: 5rem;
}

.display-chords-only #key-display,
.display-chords-only #next-key-display {
  display: none;
}

.display-chords-only #display-columns {
  grid-template-rows: auto auto;
}

.display-chords-only #chord-display,
.display-chords-only #next-chord-display {
  grid-row: 2;
  font-size: 6rem;
}

.display-key-only #chord-display,
.display-key-only #next-chord-display {
  display: none;
}

.display-key-only #display-columns {
  grid-template-rows: auto auto;
}

.display-key-only #key-display,
.display-key-only #next-key-display {
  grid-row: 2;
  font-size: 1.5rem;
  min-height: 1.8rem;
}

/* Beat dots */
#beat-indicator {
  position: absolute;
  left: 50%;
  bottom: 0.6rem;
  transform: translateX(-50%);
  display: flex;
  justify-content: center;
  gap: 12px;
}

#beat-indicator.hidden {
  display: none;
}

.beat-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--border);
  transition: background 0.08s;
}
.beat-dot.active {
  background: var(--accent);
}
.beat-dot.intro {
  background: var(--accent-cool);
}

/* ---- Controls ---- */

#controls {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

.control-panel {
  text-align: left;
}

.control-panel-compact {
  grid-column: 1 / -1;
}

.control-panel .control-row + .control-row,
.control-panel details + details,
.control-panel .toggles {
  margin-top: 1rem;
}

.control-row {
  text-align: left;
}

.control-row label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

.inline-select-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.inline-select-row label {
  margin-bottom: 0;
  white-space: nowrap;
}

.inline-select-row select {
  width: auto;
  min-width: 4.5rem;
  padding-right: 2rem;
}

.transposition-row {
  flex-wrap: wrap;
}

.transposition-row select {
  min-width: 0;
  width: fit-content;
  max-width: 100%;
  field-sizing: content;
  flex: 0 1 auto;
}

.next-preview-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
}

.next-preview-controls input[type="number"] {
  width: 6rem;
}

.next-preview-mode-toggle {
  margin-bottom: 0 !important;
}

.next-preview-mode-toggle .mode-toggle-track {
  max-width: 190px;
}

.control-row legend {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

select,
input[type="text"],
input[type="number"] {
  width: 100%;
  padding: 0.5rem 0.65rem;
  font-size: 0.95rem;
  color: var(--text);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
}

select {
  background: var(--control-surface);
  border: 1px solid var(--border);
}

input[type="text"],
input[type="number"] {
  background: var(--input-surface);
  border: 1px solid var(--border-strong);
}

select:focus,
input[type="text"]:focus,
input[type="number"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(226, 183, 20, 0.14);
}

.pattern-picker {
  position: relative;
}

.pattern-picker-select,
.pattern-picker-custom input[type="text"] {
  min-height: 2.4rem;
}

.pattern-picker-custom {
  position: relative;
}

.pattern-picker-custom input[type="text"] {
  padding-right: 2.5rem;
}

.pattern-picker.custom-active .pattern-picker-custom {
  display: block;
}

.pattern-picker.custom-active .pattern-picker-select {
  position: absolute;
  top: 0;
  right: 0;
  width: 2.4rem;
  height: 100%;
  opacity: 0;
  z-index: 2;
}

.pattern-picker-arrow {
  position: absolute;
  top: 50%;
  right: 0.8rem;
  width: 0.7rem;
  height: 0.4rem;
  transform: translateY(-50%);
  pointer-events: none;
}

.pattern-picker-arrow::before {
  content: "";
  display: block;
  width: 100%;
  height: 100%;
  background: var(--text);
  clip-path: polygon(0 0, 100% 0, 50% 100%);
}

input[type="range"] {
  width: 100%;
  accent-color: #e2b714;
}

.hint {
  font-size: 0.75rem;
  color: var(--text-faint);
  margin-top: 0.25rem;
}

.pattern-preview-row {
  margin-top: 0;
}

.pattern-preview-field {
  min-height: 2.5rem;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: rgba(20, 57, 95, 0.52);
  color: var(--text-muted);
  text-align: left;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}

#progression-feedback {
  color: var(--text-faint);
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
}

#progression-feedback.error-text {
  color: var(--danger);
}

.progression-feedback-action {
  padding: 0.3rem 0.65rem;
  border: 1px solid rgba(110, 198, 255, 0.28);
  border-radius: 999px;
  background: rgba(110, 198, 255, 0.08);
  color: var(--accent-cool);
  font-size: 0.74rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.progression-feedback-action:hover {
  background: rgba(110, 198, 255, 0.12);
  border-color: rgba(110, 198, 255, 0.42);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  background: rgba(7, 12, 28, 0.72);
  backdrop-filter: blur(8px);
}

.modal-overlay.hidden {
  display: none;
}

.modal-card {
  width: min(100%, 32rem);
  padding: 1.25rem;
  border: 1px solid rgba(110, 198, 255, 0.2);
  border-radius: 1rem;
  background: linear-gradient(180deg, rgba(24, 40, 82, 0.98), rgba(14, 25, 54, 0.98));
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.modal-card h2 {
  margin: 0 0 0.65rem;
  font-size: 1.15rem;
}

.modal-card p {
  margin: 0;
  color: var(--text-faint);
  line-height: 1.5;
}

.modal-actions {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.modal-button {
  padding: 0.7rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.15s, box-shadow 0.15s;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.modal-button:hover {
  transform: translateY(-1px);
}

.modal-button-primary {
  background: var(--accent);
  color: var(--bg);
  box-shadow: 0 10px 24px rgba(226, 183, 20, 0.18);
}

.modal-button-primary:hover {
  background: var(--accent-warm);
}

.modal-button-secondary {
  background: rgba(110, 198, 255, 0.14);
  border-color: rgba(110, 198, 255, 0.28);
  color: #dce8f5;
}

.modal-button-secondary:hover {
  background: rgba(110, 198, 255, 0.22);
  border-color: rgba(110, 198, 255, 0.42);
}

.modal-button-tertiary {
  background: rgba(142, 160, 182, 0.12);
  border-color: rgba(142, 160, 182, 0.24);
  color: var(--text-muted);
}

.modal-button-tertiary:hover {
  background: rgba(142, 160, 182, 0.18);
  border-color: rgba(142, 160, 182, 0.34);
}

body.welcome-open {
  overflow: hidden;
}

.welcome-overlay {
  position: fixed;
  inset: 0;
  z-index: 45;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  background:
    radial-gradient(circle at top left, rgba(226, 183, 20, 0.18), transparent 34%),
    radial-gradient(circle at right 20%, rgba(110, 198, 255, 0.18), transparent 30%),
    rgba(6, 10, 24, 0.84);
  backdrop-filter: blur(12px);
}

.welcome-overlay.hidden {
  display: none;
}

.welcome-card {
  width: min(100%, 52rem);
  max-height: min(92vh, 60rem);
  overflow: auto;
  padding: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 1.5rem;
  background: linear-gradient(135deg, rgba(22, 31, 60, 0.98), rgba(11, 18, 40, 0.98));
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.42);
}

.welcome-skip-button {
  padding: 0.55rem 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-faint);
  font: inherit;
  font-size: 0.84rem;
  cursor: pointer;
}

.welcome-skip-button:hover {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.09);
}

.welcome-kicker {
  margin: 0 0 0.55rem;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.welcome-card h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.04;
}

.welcome-intro {
  max-width: 48rem;
  margin: 0.85rem 0 0;
  color: var(--text-faint);
  line-height: 1.6;
}

.welcome-title {
  margin: 0 0 0.25rem;
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.welcome-kicker,
.welcome-intro {
  display: none;
}

.welcome-section {
  margin-top: 1.35rem;
}

.welcome-section.hidden {
  display: none;
}

.welcome-section h3 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
}

.welcome-choice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.welcome-choice-card,
.welcome-pill {
  position: relative;
  display: block;
  cursor: pointer;
}

.welcome-choice-card input,
.welcome-pill input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.welcome-choice-card::before,
.welcome-pill::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 1.1rem;
  background: rgba(255, 255, 255, 0.04);
  transition: border-color 0.16s, background 0.16s, transform 0.16s, box-shadow 0.16s;
}

.welcome-choice-card {
  min-height: 100%;
  padding: 1rem;
}

.welcome-choice-title,
.welcome-choice-copy,
.welcome-pill span {
  position: relative;
  z-index: 1;
  display: block;
}

.welcome-choice-title {
  font-size: 1rem;
  font-weight: 700;
}

.welcome-choice-copy {
  margin-top: 0.45rem;
  color: var(--text-faint);
  font-size: 0.92rem;
  line-height: 1.5;
}

.welcome-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.welcome-standard-select {
  width: 100%;
  padding: 0.9rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 1rem;
  background: #1a233d;
  color: var(--text);
  font: inherit;
  font-weight: 600;
}

.welcome-standard-select option {
  background: #1a233d;
  color: var(--text);
}

.welcome-standard-select:focus {
  outline: 2px solid rgba(226, 183, 20, 0.45);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.welcome-pill span {
  padding: 0.75rem 1rem;
  border-radius: 999px;
  color: var(--text);
  font-weight: 600;
}

.welcome-pill::before {
  border-radius: 999px;
}

.welcome-choice-card:hover::before,
.welcome-pill:hover::before {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.07);
}

.welcome-choice-card:has(input:checked)::before,
.welcome-pill:has(input:checked)::before {
  border-color: rgba(226, 183, 20, 0.55);
  background: linear-gradient(135deg, rgba(226, 183, 20, 0.16), rgba(110, 198, 255, 0.14));
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.22);
}

.welcome-choice-card:has(input:checked) .welcome-choice-title,
.welcome-pill:has(input:checked) span {
  color: #fff5d7;
}

.welcome-choice-card:has(input:checked) .welcome-choice-copy {
  color: rgba(255, 247, 217, 0.82);
}

.welcome-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.5rem;
}

.welcome-footer-meta {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.welcome-summary {
  margin: 0;
  color: var(--text-faint);
  line-height: 1.5;
}

.welcome-apply-button {
  padding: 0.9rem 2rem;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-warm));
  color: #0d1322;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 16px 34px rgba(226, 183, 20, 0.24);
}

.welcome-apply-button:hover {
  transform: translateY(-1px);
}

.welcome-show-next-time {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text-faint);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}

.welcome-show-next-time input {
  width: 1rem;
  height: 1rem;
  accent-color: var(--accent);
  cursor: pointer;
}

.welcome-show-next-time span {
  line-height: 1.2;
}

.custom-pattern-panel {
  margin-top: 0.75rem;
}

.pattern-help.hidden {
  display: none;
}

.custom-pattern-body {
  display: grid;
  gap: 1rem;
}

.custom-pattern-panel input[type="text"] {
  background: var(--input-surface);
  border-color: var(--border-strong);
}

.custom-pattern-panel input[type="text"]:focus {
  border-color: var(--accent);
}

.custom-pattern-panel label,
.custom-pattern-panel legend {
  color: var(--text-muted);
}

.custom-pattern-panel.hidden,
.pattern-picker-custom.hidden,
#double-time-row.hidden {
  display: none;
}

.progression-manager-row {
  border: 0;
  min-width: 0;
  padding: 0;
  margin-top: 0.75rem;
}

.progression-manager-grid {
  display: grid;
  grid-template-columns: auto auto;
  gap: 0.6rem;
  align-items: center;
  justify-content: start;
}

#save-progression,
#cancel-progression-edit,
#new-progression,
#edit-progression,
#delete-progression,
#manage-progressions,
#restore-default-progressions,
#clear-all-progressions {
  padding: 0.55rem 0.85rem;
  font-size: 0.88rem;
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s, opacity 0.15s, transform 0.15s, box-shadow 0.15s;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

#save-progression {
  background: var(--accent);
  color: var(--bg);
}

#save-progression:hover {
  background: var(--accent-warm);
}

#cancel-progression-edit {
  background: rgba(142, 160, 182, 0.14);
  border-color: rgba(142, 160, 182, 0.28);
  color: var(--text-muted);
}

#cancel-progression-edit:hover:not(:disabled) {
  background: rgba(142, 160, 182, 0.22);
}

#new-progression {
  background: rgba(110, 198, 255, 0.12);
  border-color: rgba(110, 198, 255, 0.28);
  color: #dce8f5;
}

#new-progression:hover:not(:disabled) {
  background: rgba(110, 198, 255, 0.2);
  border-color: rgba(110, 198, 255, 0.4);
}

#edit-progression {
  background: rgba(110, 198, 255, 0.12);
  border-color: rgba(110, 198, 255, 0.28);
  color: #dce8f5;
}

#edit-progression:hover:not(:disabled) {
  background: rgba(110, 198, 255, 0.2);
  border-color: rgba(110, 198, 255, 0.4);
}

#delete-progression {
  background: rgba(201, 108, 125, 0.14);
  border-color: rgba(201, 108, 125, 0.28);
  color: #f0d7df;
}

#delete-progression:hover:not(:disabled) {
  background: rgba(201, 108, 125, 0.22);
  border-color: rgba(201, 108, 125, 0.4);
}

#manage-progressions {
  background: rgba(110, 198, 255, 0.12);
  border-color: rgba(110, 198, 255, 0.28);
  color: #dce8f5;
}

#manage-progressions:hover:not(:disabled) {
  background: rgba(110, 198, 255, 0.2);
  border-color: rgba(110, 198, 255, 0.4);
}

#restore-default-progressions {
  background: rgba(110, 198, 255, 0.12);
  border-color: rgba(110, 198, 255, 0.28);
  color: #dce8f5;
}

#restore-default-progressions:hover {
  background: rgba(110, 198, 255, 0.2);
  border-color: rgba(110, 198, 255, 0.4);
}

#clear-all-progressions {
  background: rgba(201, 108, 125, 0.14);
  border-color: rgba(201, 108, 125, 0.28);
  color: #f0d7df;
}

#clear-all-progressions:hover:not(:disabled) {
  background: rgba(201, 108, 125, 0.22);
  border-color: rgba(201, 108, 125, 0.4);
}

#save-progression.hidden,
#cancel-progression-edit.hidden,
#new-progression.hidden,
#edit-progression.hidden,
#delete-progression.hidden,
#manage-progressions.hidden,
#restore-default-progressions.hidden {
  display: none;
}

#cancel-progression-edit:disabled,
#edit-progression:disabled,
#delete-progression:disabled {
  opacity: 0.45;
  cursor: default;
}

.progression-manager-panel {
  margin-top: 0.9rem;
  padding: 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--panel-strong);
}

.progression-manager-panel.hidden {
  display: none;
}

.progression-manager-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.7rem;
}

.progression-manager-panel-heading {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.2rem;
}

.progression-manager-panel-title {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
}

.progression-manager-panel-hint {
  font-size: 0.8rem;
  color: var(--accent-cool);
}

.progression-manager-back-button {
  padding: 0.4rem 0.75rem;
  border: 1px solid rgba(110, 198, 255, 0.28);
  border-radius: 999px;
  background: rgba(110, 198, 255, 0.08);
  color: var(--accent-cool);
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
}

.progression-manager-back-button:hover {
  background: rgba(110, 198, 255, 0.12);
  border-color: rgba(110, 198, 255, 0.42);
}

.progression-manager-list {
  display: grid;
  gap: 0.45rem;
}

.progression-manager-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.7rem;
  align-items: center;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #182543;
}

.progression-manager-item.is-selected {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px rgba(226, 183, 20, 0.2);
}

.progression-manager-item.is-dragging {
  opacity: 0.55;
}

.progression-manager-item.drop-before {
  box-shadow: inset 0 2px 0 var(--accent);
}

.progression-manager-item.drop-after {
  box-shadow: inset 0 -2px 0 var(--accent);
}

.progression-manager-handle {
  color: var(--text-soft);
  cursor: grab;
  font-size: 1rem;
  user-select: none;
}

.progression-manager-item-name {
  min-width: 0;
  font-size: 0.88rem;
  color: #dfe8f2;
}

.progression-manager-item-mode {
  color: var(--text-soft);
}

.progression-manager-item-delete {
  padding: 0.45rem 0.7rem;
  border: 1px solid rgba(201, 108, 125, 0.28);
  border-radius: var(--radius-sm);
  background: rgba(201, 108, 125, 0.14);
  color: #f0d7df;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
}

.progression-manager-item-delete:hover {
  background: rgba(201, 108, 125, 0.22);
  border-color: rgba(201, 108, 125, 0.4);
}

.progression-manager-item-actions {
  display: flex;
  gap: 0.4rem;
}

.progression-manager-item-edit,
.progression-manager-item-copy {
  padding: 0.45rem 0.7rem;
  border: 1px solid rgba(226, 183, 20, 0.22);
  border-radius: var(--radius-sm);
  background: rgba(226, 183, 20, 0.1);
  color: #f0e6c0;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
}

.progression-manager-item-edit:hover,
.progression-manager-item-copy:hover {
  background: rgba(226, 183, 20, 0.18);
  border-color: rgba(226, 183, 20, 0.35);
}

.progression-manager-undo-placeholder {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
  padding: 0.55rem 0.75rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  background: rgba(201, 108, 125, 0.06);
}

.progression-manager-undo-message {
  font-size: 0.84rem;
  color: var(--text-soft);
  font-style: italic;
}

.progression-manager-undo-button {
  padding: 0.4rem 0.75rem;
  border: 1px solid rgba(226, 183, 20, 0.28);
  border-radius: var(--radius-sm);
  background: rgba(226, 183, 20, 0.12);
  color: #f0e6c0;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
}

.progression-manager-undo-button:hover {
  background: rgba(226, 183, 20, 0.22);
  border-color: rgba(226, 183, 20, 0.4);
}

.progression-manager-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.85rem;
}

.pattern-help,
#key-picker,
#mixer-panel {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  background: var(--panel-strong);
  overflow: hidden;
}

.pattern-help-static {
  margin-top: 0.75rem;
}

.pattern-help-title {
  padding: 0.72rem 0.85rem;
  font-size: 0.84rem;
  color: var(--accent-cool);
  font-weight: 600;
}

.pattern-help summary {
  cursor: pointer;
  list-style: none;
  padding: 0.72rem 0.85rem;
  font-size: 0.84rem;
  color: var(--accent-cool);
  user-select: none;
  background: rgba(20, 57, 95, 0.42);
}

.pattern-help summary::-webkit-details-marker {
  display: none;
}

.pattern-help summary::before {
  content: '▸';
  display: inline-block;
  margin-right: 0.45rem;
  transition: transform 0.15s ease;
}

.pattern-help[open] summary::before {
  transform: rotate(90deg);
}

.pattern-help summary::before {
  content: '\25B6';
}

.pattern-help-body {
  padding: 0 0.8rem 0.8rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.pattern-help-body p + p,
.pattern-help-body ul + p {
  margin-top: 0.6rem;
}

.pattern-help-body ul {
  margin: 0.5rem 0 0;
  padding-left: 1.1rem;
}

.pattern-help-body li + li {
  margin-top: 0.3rem;
}

.pattern-help-body code {
  color: #f2d675;
}

.pattern-help-comment {
  color: var(--text-faint);
  font-style: italic;
}

.error {
  font-size: 0.8rem;
  color: var(--danger);
  margin-top: 0.25rem;
}
.error.hidden {
  display: none;
}

/* Toggles row */
.toggles {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.toggle-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
}

.toggle-label {
  display: flex !important;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem !important;
  color: var(--text) !important;
  cursor: pointer;
}

.toggle-label strong {
  color: var(--accent);
  font-weight: 700;
}

.mode-row {
  display: grid;
  gap: 0.35rem;
  margin-top: 0.75rem;
}

.mode-row + .custom-pattern-panel {
  margin-top: 0.75rem;
}

.mode-toggle {
  display: block !important;
  margin-bottom: 0 !important;
  cursor: pointer;
}

.mode-toggle input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.mode-toggle input[type="checkbox"]:disabled + .mode-toggle-track {
  opacity: 0.45;
  cursor: default;
}

.mode-toggle input[type="checkbox"]:disabled + .mode-toggle-track::before {
  background: #8f9aa7;
}

.mode-toggle input[type="checkbox"]:disabled + .mode-toggle-track .mode-option {
  color: #5e6a77;
}

.mode-toggle input[type="checkbox"]:disabled:not(:checked) + .mode-toggle-track .mode-option-major,
.mode-toggle input[type="checkbox"]:disabled:checked + .mode-toggle-track .mode-option-minor {
  color: #1a1a2e;
}

.mode-toggle-track {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 0.15rem;
  background: #0f3460;
  border: 1px solid #2a2a4a;
  border-radius: 999px;
  overflow: hidden;
  max-width: 220px;
}

.mode-toggle-track::before {
  content: '';
  position: absolute;
  top: 0.15rem;
  bottom: 0.15rem;
  left: 0.15rem;
  width: calc(50% - 0.15rem);
  background: #e2b714;
  border-radius: 999px;
  transition: transform 0.18s ease;
}

.mode-toggle input:checked + .mode-toggle-track::before {
  transform: translateX(100%);
}

.mode-option {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0.4rem 0.65rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-faint);
  transition: color 0.18s ease;
}

.mode-toggle input:not(:checked) + .mode-toggle-track .mode-option-major {
  color: #1a1a2e;
}

.mode-toggle input:checked + .mode-toggle-track .mode-option-minor {
  color: #1a1a2e;
}

.toggle-label input[type="checkbox"] {
  accent-color: #e2b714;
  width: 16px;
  height: 16px;
}

.toggle-select-label {
  flex-wrap: nowrap;
}

.toggle-select-label select {
  width: auto;
  min-width: 0;
}

/* Transport buttons */
#transport-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin: -0.1rem 0 0.15rem;
}

.transport-tempo {
  display: grid;
  gap: 0.45rem;
  width: min(100%, 640px);
  margin: 0 auto 1.1rem;
}

.transport-tempo label {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text);
  text-align: center;
}

#start-stop, #pause {
  padding: 0.75rem 2rem;
  font-size: 1.1rem;
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  letter-spacing: 0.03em;
  transition: background 0.15s, border-color 0.15s, transform 0.15s, box-shadow 0.15s;
  box-shadow: 0 8px 18px rgba(4, 10, 24, 0.2);
}

#start-stop {
  color: var(--bg);
  background: var(--accent);
}

#start-stop:hover {
  background: var(--accent-warm);
}

#start-stop.running {
  background: #d98c1f;
  color: var(--bg);
  border-color: rgba(255, 210, 100, 0.24);
}
#start-stop.running:hover {
  background: #e8a12f;
}
#pause {
  background: rgba(110, 198, 255, 0.12);
  border-color: rgba(110, 198, 255, 0.28);
  color: #dce8f5;
}
#pause:hover {
  background: rgba(110, 198, 255, 0.2);
  border-color: rgba(110, 198, 255, 0.4);
}
#pause.paused {
  background: var(--success);
  color: var(--bg);
  border-color: rgba(115, 255, 173, 0.22);
}
#pause.paused:hover {
  background: #3ddb80;
}
#pause.hidden {
  display: none;
}

/* ---- Key Picker ---- */

#key-picker,
#mixer-panel {
  padding: 0;
}

.key-picker-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.72rem 0.85rem;
  cursor: pointer;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--accent-cool);
  list-style: none;
  user-select: none;
  background: rgba(20, 57, 95, 0.42);
}

.key-picker-summary::-webkit-details-marker { display: none; }

.key-picker-summary > span:first-child::before {
  content: '\25B6';
  display: inline-block;
  font-size: 0.6rem;
  margin-right: 0.45rem;
  transition: transform 0.15s;
  vertical-align: middle;
}

#key-picker[open] > .key-picker-summary > span:first-child::before {
  transform: rotate(90deg);
}

#key-checkboxes {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  grid-template-rows: auto auto;
  gap: 0.4rem 0.5rem;
  width: min(100%, 54rem);
  margin: 0 auto;
  padding: 0.55rem 0 0.8rem;
  align-items: end;
}

.key-picker-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.55rem;
  width: min(100%, 54rem);
  margin: 0 auto;
  padding: 0.55rem 0 0.1rem;
}

.key-picker-action {
  padding: 0.42rem 0.82rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #dce8f5;
  background: rgba(110, 198, 255, 0.12);
  border: 1px solid rgba(110, 198, 255, 0.28);
  border-radius: 999px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 1px 2px rgba(0, 0, 0, 0.12);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.15s, box-shadow 0.15s;
}

.key-picker-action:hover {
  background: rgba(110, 198, 255, 0.2);
  border-color: rgba(110, 198, 255, 0.4);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12), 0 3px 8px rgba(0, 0, 0, 0.14);
}

.key-picker-action:active {
  transform: translateY(1px);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.18);
}

.key-picker-action:focus-visible {
  outline: 2px solid rgba(226, 183, 20, 0.85);
  outline-offset: 2px;
}

.reset-settings-button {
  padding: 0.5rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-faint);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.reset-settings-button:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.22);
  color: var(--text);
}

.reset-settings-button:active {
  transform: translateY(1px);
}

.reset-settings-button:focus-visible {
  outline: 2px solid rgba(226, 183, 20, 0.85);
  outline-offset: 2px;
}

.key-checkbox-label {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  min-height: 4.8rem;
  padding: 0.45rem 0.35rem 0.55rem;
  border-radius: 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.82rem;
  font-weight: 700;
  text-align: center;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s, border-color 0.15s, color 0.15s;
}

.key-checkbox-label input[type="checkbox"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.key-checkbox-text {
  position: relative;
  z-index: 1;
  line-height: 1.1;
}

.key-checkbox-white {
  color: #17324e;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(223, 233, 244, 0.92));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.85),
    0 4px 12px rgba(0, 0, 0, 0.14);
}

.key-checkbox-white.is-selected {
  color: #102437;
  border-color: rgba(226, 183, 20, 0.62);
  background:
    linear-gradient(180deg, rgba(255, 244, 199, 0.98), rgba(242, 209, 117, 0.96));
}

.key-checkbox-black {
  min-height: 3.3rem;
  width: 72%;
  justify-self: end;
  transform: translateX(50%);
  color: #f4f7fb;
  background:
    linear-gradient(180deg, rgba(34, 48, 64, 0.98), rgba(9, 15, 22, 0.98));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    0 6px 16px rgba(0, 0, 0, 0.28);
}

.key-checkbox-black.is-selected {
  border-color: rgba(226, 183, 20, 0.72);
  background:
    linear-gradient(180deg, rgba(191, 147, 16, 0.98), rgba(116, 83, 0, 0.98));
}

.key-checkbox-label:hover {
  transform: translateY(-1px);
}

.key-checkbox-black:hover {
  transform: translateX(50%) translateY(-1px);
}

.key-checkbox-label:focus-within {
  outline: 2px solid rgba(226, 183, 20, 0.85);
  outline-offset: 2px;
}

@media (max-width: 560px) {
  .display-key-picker-panel {
    width: calc(100vw - 1rem);
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }

  #key-checkboxes {
    gap: 0.35rem 0.32rem;
  }

  .key-checkbox-label {
    min-height: 4.2rem;
    padding-left: 0.2rem;
    padding-right: 0.2rem;
    font-size: 0.74rem;
  }

  .key-checkbox-black {
    min-height: 2.9rem;
    width: 76%;
  }
}

/* ---- Mixer ---- */

.mixer-controls {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  padding: 0.35rem 0.65rem 0.8rem;
}

.mixer-slider {
  display: flex !important;
  flex-direction: column;
  gap: 0.35rem;
  margin: 0 !important;
}

.mixer-slider > span {
  font-size: 0.88rem;
  color: var(--text);
}

.mixer-slider-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
  align-items: center;
}

.mixer-slider-row output {
  min-width: 3.5rem;
  text-align: right;
  font-size: 0.84rem;
  color: var(--accent-cool);
}

@media (max-width: 720px) {
  .social-share-link span {
    display: none;
  }

  .social-share-link {
    padding: 0.55rem;
  }

  #app {
    max-width: 520px;
  }

  #display {
    height: 10rem;
    padding-left: 0;
    padding-right: 0;
  }

  #display-columns {
    column-gap: 0.8rem;
  }

  .display-show-both #chord-display,
  .display-show-both #next-chord-display {
    font-size: 3rem;
  }

  .display-chords-only #chord-display,
  .display-chords-only #next-chord-display {
    font-size: 3.5rem;
  }

  .display-key-only #key-display,
  .display-key-only #next-key-display {
    font-size: 1.3rem;
    min-height: 1.5rem;
  }

  #controls {
    grid-template-columns: 1fr;
  }

  .control-panel-compact {
    grid-column: auto;
  }

  .progression-manager-grid {
    grid-template-columns: 1fr;
  }

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

  .progression-manager-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.55rem;
  }

  .progression-manager-actions button {
    width: 100%;
  }

  .progression-manager-item {
    grid-template-columns: auto 1fr;
    align-items: start;
  }

  .progression-manager-item-actions {
    grid-column: 2;
    flex-wrap: wrap;
  }

  .progression-manager-item-mode {
    display: none;
  }

  .welcome-card {
    padding: 1.15rem;
  }

  .welcome-choice-grid {
    grid-template-columns: 1fr;
  }

  .welcome-footer {
    flex-direction: column;
    align-items: center;
  }

  .welcome-apply-button {
    width: 100%;
  }
}