/* SolAudioLab V7.4.0 Rhythm Creator Lower Panels Fold Fix */
.rhythm-shell {
  display: grid;
  gap: 12px;
}

.rhythm-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 360px);
  gap: 16px;
  align-items: end;
}

.tagline {
  color: var(--green);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.rhythm-title {
  margin: 0;
  font-size: clamp(42px, 8vw, 86px);
  line-height: .82;
  letter-spacing: -0.09em;
  font-weight: 1000;
}

.rhythm-sub {
  color: var(--muted);
  line-height: 1.5;
  max-width: 780px;
  margin: 14px 0 0;
  font-size: 14px;
}

.hero-badge {
  border: 1px solid rgba(66,211,107,.26);
  background: rgba(66,211,107,.08);
  border-radius: 14px;
  padding: 12px;
  color: #bcffc9;
  font-size: 12px;
  line-height: 1.45;
  box-shadow: var(--inset);
}

.hero-badge strong {
  display: block;
  color: var(--green);
  letter-spacing: .09em;
  text-transform: uppercase;
  margin-bottom: 5px;
}

.hero-badge b {
  color: var(--text);
  font-size: 15px;
}

.intro-counter {
  margin-top: 10px;
}

.creator-layout,
.split-panels {
  display: grid;
  grid-template-columns: minmax(320px, .86fr) minmax(0, 1.14fr);
  gap: 12px;
}

.transport-panel,
.settings-panel,
.pattern-panel {
  min-width: 0;
}

.transport-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 170px;
  gap: 12px;
  align-items: stretch;
}

.bpm-display {
  border: 1px solid var(--line-soft);
  border-radius: 18px;
  background:
    radial-gradient(circle at 90% 10%, rgba(224,0,18,.16), transparent 42%),
    #11151a;
  padding: 16px;
  box-shadow: var(--inset);
}

.bpm-display span {
  color: var(--dim);
  font-size: 11px;
  font-weight: 950;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.bpm-display strong {
  display: block;
  color: var(--green);
  font-size: clamp(58px, 10vw, 94px);
  line-height: .82;
  letter-spacing: -0.085em;
  font-weight: 1000;
  margin-top: 8px;
}

.start-button {
  border: 1px solid #ff5260;
  background: linear-gradient(180deg, #ff3040, #93000a);
  color: #fff;
  border-radius: 18px;
  font-size: 28px;
  font-weight: 1000;
  letter-spacing: -0.05em;
  cursor: pointer;
  box-shadow: var(--shadow), var(--inset);
}

.start-button.playing {
  border-color: #60e280;
  background: linear-gradient(180deg, #45c765, #176b2d);
}

.control-grid,
.setup-grid,
.practice-grid,
.save-grid {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.control-grid {
  grid-template-columns: minmax(140px, 1fr) minmax(0, 1.1fr) 150px;
}

.setup-grid,
.practice-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.input-row {
  display: grid;
  gap: 5px;
}

.input-row label,
.slider-group label span {
  color: var(--dim);
  font-size: 10px;
  font-weight: 950;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.input-row input,
.input-row select {
  min-width: 0;
  width: 100%;
  border: 1px solid var(--line-soft);
  background: #0f1318;
  color: var(--text);
  border-radius: 12px;
  padding: 10px 11px;
  font-size: 15px;
  font-weight: 850;
  outline: none;
  box-shadow: var(--inset);
}

.input-row input:focus,
.input-row select:focus {
  border-color: var(--green);
}

.button-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  align-self: end;
}

.btn {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(180deg, #303743, #171b22);
  color: var(--text);
  font-weight: 950;
  letter-spacing: .035em;
  text-transform: uppercase;
  padding: 10px 10px;
  cursor: pointer;
  box-shadow: var(--inset);
}

.btn:hover {
  border-color: #ff5260;
}

.btn.small {
  font-size: 11px;
  padding: 8px 8px;
}

.btn.green {
  background: linear-gradient(180deg, #45c765, #176b2d);
  border-color: #60e280;
}

.btn.copied {
  border-color: #60e280;
  color: #9bffb3;
}

.transport-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.transport-stats div {
  border: 1px solid var(--line-soft);
  background: #11151a;
  border-radius: 13px;
  padding: 9px;
}

.transport-stats span {
  display: block;
  color: var(--dim);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.transport-stats strong {
  color: var(--text);
  display: block;
  margin-top: 5px;
  font-size: 16px;
  font-weight: 1000;
}

.status-line,
.hint-line,
.panel-copy {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
  margin: 10px 0 0;
}

.status-line strong {
  color: var(--green);
}

.panel-title {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 1000;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 12px;
}

.legend-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
}

.legend {
  border-radius: 999px;
  padding: 6px 8px;
  border: 1px solid var(--line-soft);
  font-size: 11px;
  font-weight: 950;
  white-space: nowrap;
}

.legend.accent { color: #fff; background: rgba(224,0,18,.28); border-color: rgba(255,82,96,.5); }
.legend.normal { color: #cbffda; background: rgba(66,211,107,.12); border-color: rgba(66,211,107,.35); }
.legend.ghost { color: #d2d9e3; background: rgba(150,160,175,.13); }
.legend.mute { color: var(--dim); background: #11151a; }

.pattern-ruler,
.step-grid {
  display: grid;
  gap: 6px;
}

.pattern-ruler {
  margin-bottom: 7px;
}

.ruler-cell {
  color: var(--dim);
  font-size: 10px;
  font-weight: 900;
  text-align: center;
  min-width: 0;
  overflow: hidden;
}

.step-button {
  position: relative;
  min-height: 62px;
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  color: var(--text);
  font-size: clamp(16px, 3vw, 25px);
  font-weight: 1000;
  cursor: pointer;
  box-shadow: var(--inset);
  transition: transform .05s ease, border-color .08s ease, box-shadow .08s ease;
}

.step-button:hover {
  transform: translateY(-1px);
  border-color: rgba(255,255,255,.3);
}

.step-button.playing {
  outline: 3px solid rgba(255,255,255,.28);
  box-shadow: 0 0 0 2px rgba(66,211,107,.25), 0 0 22px rgba(66,211,107,.25);
}

.step-button.accent {
  background:
    radial-gradient(circle at 70% 12%, rgba(255,255,255,.22), transparent 28%),
    linear-gradient(180deg, #ff3040, #89000a);
  border-color: #ff5260;
}

.step-button.normal {
  background: linear-gradient(180deg, #2f9b4d, #145a28);
  border-color: rgba(66,211,107,.55);
}

.step-button.ghost {
  background: linear-gradient(180deg, #4c5564, #242a33);
  border-color: rgba(185,195,210,.28);
  color: #d4dae2;
}

.step-button.mute {
  background: #0f1318;
  color: #596270;
}

.step-number {
  position: absolute;
  top: 6px;
  left: 7px;
  color: rgba(255,255,255,.45);
  font-size: 9px;
  font-weight: 900;
}

.step-button.mute .step-number {
  color: rgba(255,255,255,.22);
}

.edit-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 12px;
}

.preset-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 8px;
  margin-top: 12px;
}

.preset-btn {
  text-align: left;
  border: 1px solid var(--line-soft);
  background: #11151a;
  color: var(--text);
  border-radius: 13px;
  padding: 10px;
  cursor: pointer;
  box-shadow: var(--inset);
}

.preset-btn:hover {
  border-color: #ff5260;
}

.preset-btn strong {
  display: block;
  font-size: 13px;
  font-weight: 1000;
}

.preset-btn span {
  display: block;
  color: var(--muted);
  font-size: 11px;
  margin-top: 4px;
  line-height: 1.32;
}

.slider-group {
  margin-top: 12px;
}

.slider-group label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  color: var(--muted);
}

.slider-group label strong {
  color: var(--green);
  font-size: 12px;
  font-weight: 1000;
}

.slider-group input[type="range"] {
  width: 100%;
  margin-top: 8px;
  accent-color: var(--accent-2);
}

.switch-row {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line-soft);
  background: #11151a;
  border-radius: 12px;
  padding: 10px;
  color: var(--text);
  font-size: 13px;
  font-weight: 950;
}

.save-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.saved-box {
  margin-top: 14px;
  border-top: 1px solid var(--line-soft);
  padding-top: 12px;
}

.saved-title {
  color: var(--dim);
  font-size: 10px;
  font-weight: 1000;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.saved-list {
  display: grid;
  gap: 7px;
  margin-top: 8px;
}

.saved-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 6px;
  align-items: center;
  border: 1px solid var(--line-soft);
  background: #11151a;
  border-radius: 12px;
  padding: 8px;
}

.saved-name {
  min-width: 0;
  color: var(--text);
  font-size: 13px;
  font-weight: 900;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.saved-empty {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.seo-section {
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.6;
}

.seo-section h2,
.seo-section h3 {
  color: var(--text);
  letter-spacing: -0.045em;
}

@media (max-width: 1040px) {
  .creator-layout,
  .split-panels {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 900px) {
  .rhythm-hero,
  .panel-head {
    grid-template-columns: 1fr;
    display: grid;
  }

  .legend-row {
    justify-content: flex-start;
  }

  .transport-top {
    grid-template-columns: 1fr;
  }

  .start-button {
    min-height: 82px;
  }
}

@media (max-width: 680px) {
  .rhythm-title {
    font-size: clamp(42px, 16vw, 64px);
  }

  .setup-grid,
  .practice-grid,
  .save-grid,
  .preset-grid,
  .transport-stats {
    grid-template-columns: 1fr;
  }

  .step-button {
    min-height: 52px;
    border-radius: 11px;
  }

  .button-row {
    grid-template-columns: repeat(4, 1fr);
  }
}


/* V7.0.1 Rhythm Creator mobile transport and control layout fix */

/* Prevent Tap Tempo from covering BPM delta buttons on medium widths */
.control-grid {
  grid-template-columns: minmax(150px, .75fr) minmax(220px, 1fr);
  align-items: end;
}

.control-grid .button-row {
  min-width: 220px;
}

#tapTempoBtn {
  grid-column: 1 / -1;
  min-height: 48px;
  width: 100%;
}

/* Make transport controls stay usable while editing on mobile */
.mobile-sticky-transport {
  display: none;
}

@media (max-width: 1040px) {
  .control-grid {
    grid-template-columns: minmax(150px, .8fr) minmax(230px, 1fr);
  }

  #tapTempoBtn {
    grid-column: 1 / -1;
  }
}

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

  .control-grid .button-row {
    min-width: 0;
  }

  #tapTempoBtn {
    min-height: 54px;
    font-size: 14px;
  }

  .rhythm-shell {
    padding-bottom: 96px;
  }

  .mobile-sticky-transport {
    position: fixed;
    left: 10px;
    right: 10px;
    bottom: 10px;
    z-index: 80;
    display: grid;
    grid-template-columns: 76px minmax(0, 1fr) minmax(82px, .72fr);
    gap: 8px;
    align-items: stretch;
    padding: 9px;
    border: 1px solid rgba(255,255,255,.18);
    border-radius: 18px;
    background:
      radial-gradient(circle at 90% 0%, rgba(224,0,18,.19), transparent 42%),
      linear-gradient(180deg, rgba(31,36,44,.97), rgba(13,16,20,.98));
    box-shadow: 0 18px 38px rgba(0,0,0,.48), inset 0 1px 0 rgba(255,255,255,.07);
    backdrop-filter: blur(10px);
  }

  .mobile-bpm-box {
    border: 1px solid var(--line-soft);
    border-radius: 13px;
    background: #0f1318;
    box-shadow: var(--inset);
    padding: 8px 7px;
    display: grid;
    align-content: center;
    text-align: center;
  }

  .mobile-bpm-box span {
    display: block;
    color: var(--dim);
    font-size: 9px;
    font-weight: 1000;
    letter-spacing: .12em;
    text-transform: uppercase;
  }

  .mobile-bpm-box strong {
    display: block;
    color: var(--green);
    font-size: 25px;
    font-weight: 1000;
    line-height: .9;
    letter-spacing: -0.07em;
    margin-top: 3px;
  }

  .mobile-start-button,
  .mobile-tap-button {
    border: 1px solid var(--line);
    border-radius: 14px;
    color: #fff;
    font-weight: 1000;
    cursor: pointer;
    box-shadow: var(--inset);
  }

  .mobile-start-button {
    background: linear-gradient(180deg, #ff3040, #93000a);
    border-color: #ff5260;
    font-size: 20px;
    letter-spacing: -0.04em;
  }

  .mobile-start-button.playing {
    background: linear-gradient(180deg, #45c765, #176b2d);
    border-color: #60e280;
  }

  .mobile-tap-button {
    background: linear-gradient(180deg, #303743, #171b22);
    font-size: 15px;
    letter-spacing: .03em;
  }

  .start-button {
    min-height: 82px;
  }
}

@media (max-width: 390px) {
  .mobile-sticky-transport {
    left: 7px;
    right: 7px;
    bottom: 7px;
    grid-template-columns: 68px minmax(0, 1fr) 74px;
    gap: 6px;
    padding: 7px;
  }

  .mobile-start-button {
    font-size: 18px;
  }

  .mobile-tap-button {
    font-size: 13px;
  }

  .mobile-bpm-box strong {
    font-size: 22px;
  }
}


/* V7.1.0 mobile-first rhythm flow */
.rhythm-app {
  display: grid;
  grid-template-columns: minmax(320px, .82fr) minmax(0, 1.18fr);
  gap: 12px;
  align-items: start;
}

.app-transport {
  grid-column: 1;
  grid-row: 1;
}

.app-pattern {
  grid-column: 2;
  grid-row: 1 / span 2;
}

.quick-preset-panel {
  grid-column: 1;
  grid-row: 2;
}

.rhythm-disclosure-stack {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.quick-preset-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 7px;
  margin-top: 10px;
}

.quick-preset-grid .preset-btn {
  min-height: 50px;
  padding: 9px;
}

.quick-preset-grid .preset-btn strong {
  font-size: 12px;
}

.quick-preset-grid .preset-btn span {
  font-size: 10px;
}

.compact-head {
  margin-bottom: 0;
}

.rhythm-disclosure {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(31,36,44,0.94), rgba(21,24,29,0.96));
  box-shadow: var(--shadow), var(--inset);
  overflow: hidden;
}

.rhythm-disclosure > summary {
  min-height: 54px;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 14px;
  user-select: none;
}

.rhythm-disclosure > summary::-webkit-details-marker {
  display: none;
}

.rhythm-disclosure > summary span {
  color: var(--text);
  font-size: 13px;
  font-weight: 1000;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.rhythm-disclosure > summary small {
  color: var(--muted);
  font-size: 11px;
  font-weight: 850;
  text-align: right;
}

.rhythm-disclosure > summary::after {
  content: "+";
  flex: 0 0 auto;
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border: 1px solid rgba(66,211,107,0.25);
  border-radius: 999px;
  color: var(--green);
  font-weight: 1000;
}

.rhythm-disclosure[open] > summary {
  border-bottom: 1px solid var(--line-soft);
}

.rhythm-disclosure[open] > summary::after {
  content: "−";
}

.disclosure-body {
  padding: 12px;
}

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

.state-guide {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-top: 10px;
}

.state-guide div {
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  background: #11151a;
  padding: 10px;
  text-align: center;
  box-shadow: var(--inset);
}

.state-guide strong {
  display: block;
  color: var(--green);
  font-size: 22px;
  line-height: 1;
}

.state-guide span {
  display: block;
  color: var(--muted);
  margin-top: 5px;
  font-size: 10px;
  font-weight: 900;
  text-transform: uppercase;
}

.mobile-step-box {
  border: 1px solid var(--line-soft);
  border-radius: 13px;
  background: #0f1318;
  box-shadow: var(--inset);
  padding: 8px 7px;
  display: grid;
  align-content: center;
  text-align: center;
}

.mobile-step-box span {
  display: block;
  color: var(--dim);
  font-size: 9px;
  font-weight: 1000;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.mobile-step-box strong {
  display: block;
  color: var(--text);
  font-size: 20px;
  font-weight: 1000;
  line-height: .9;
  letter-spacing: -0.04em;
  margin-top: 3px;
}

@media (min-width: 1041px) {
  .rhythm-disclosure:nth-child(1),
  .rhythm-disclosure:nth-child(2) {
    grid-column: auto;
  }
}

@media (max-width: 1040px) {
  .rhythm-app {
    grid-template-columns: 1fr;
  }

  .app-transport,
  .app-pattern,
  .quick-preset-panel,
  .rhythm-disclosure-stack {
    grid-column: 1;
    grid-row: auto;
  }

  .rhythm-disclosure-stack {
    grid-template-columns: 1fr;
  }
}

/* spacing polish pass for compact mobile rhythm editing */
@media (max-width: 760px) {
  .rhythm-shell {
    gap: 10px;
    padding-left: 8px;
    padding-right: 8px;
    padding-bottom: 104px;
  }

  .rhythm-hero {
    display: block;
    padding: 13px;
  }

  .tagline {
    font-size: 10px;
    margin-bottom: 5px;
  }

  .rhythm-title {
    font-size: clamp(31px, 10.5vw, 46px);
    letter-spacing: -0.08em;
  }

  .rhythm-sub {
    margin-top: 8px;
    font-size: 12.5px;
    line-height: 1.4;
    max-width: 350px;
  }

  .intro-counter {
    display: none;
  }

  .tool-panel,
  .sub-panel {
    padding: 12px;
    border-radius: 15px;
  }

  .rhythm-app {
    gap: 10px;
  }

  .transport-top {
    grid-template-columns: 1fr minmax(120px, .8fr);
    gap: 8px;
  }

  .bpm-display {
    padding: 11px 12px;
    border-radius: 15px;
  }

  .bpm-display strong {
    font-size: clamp(48px, 16vw, 72px);
    margin-top: 5px;
  }

  .start-button {
    min-height: 74px;
    border-radius: 15px;
    font-size: 25px;
  }

  .control-grid {
    grid-template-columns: 1fr;
    gap: 7px;
    margin-top: 9px;
  }

  .button-row {
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
  }

  .btn,
  .btn.small {
    min-height: 42px;
    padding: 8px 7px;
  }

  #tapTempoBtn {
    min-height: 46px;
  }

  .transport-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    margin-top: 9px;
  }

  .transport-stats div {
    padding: 7px;
    border-radius: 11px;
  }

  .transport-stats span {
    font-size: 8.5px;
  }

  .transport-stats strong {
    font-size: 13px;
    margin-top: 3px;
  }

  .status-line,
  .hint-line,
  .panel-copy {
    margin-top: 8px;
    font-size: 11.5px;
    line-height: 1.35;
  }

  .pattern-head {
    display: block;
    margin-bottom: 8px;
  }

  .legend-row {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 5px;
    margin-top: 8px;
  }

  .legend {
    padding: 5px 4px;
    font-size: 9px;
    text-align: center;
  }

  .pattern-ruler,
  .step-grid {
    gap: 5px;
  }

  .pattern-ruler {
    margin-bottom: 5px;
  }

  .ruler-cell {
    font-size: 9px;
  }

  .step-button {
    min-height: 47px;
    border-radius: 11px;
    font-size: 18px;
  }

  .step-number {
    top: 4px;
    left: 5px;
    font-size: 8px;
  }

  .step-button.playing {
    outline: 2px solid rgba(255,255,255,.34);
    box-shadow: 0 0 0 2px rgba(66,211,107,.22), 0 0 18px rgba(66,211,107,.22);
  }

  .edit-toolbar {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
    margin-top: 9px;
  }

  .quick-preset-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
    margin-top: 8px;
  }

  .quick-preset-grid .preset-btn {
    min-height: 45px;
    padding: 8px 6px;
  }

  .quick-preset-grid .preset-btn strong {
    font-size: 11px;
  }

  .quick-preset-grid .preset-btn span {
    display: none;
  }

  .rhythm-disclosure > summary {
    min-height: 49px;
    padding: 12px;
  }

  .rhythm-disclosure > summary span {
    font-size: 12px;
  }

  .rhythm-disclosure > summary small {
    max-width: 135px;
    font-size: 10px;
  }

  .disclosure-body {
    padding: 10px;
  }

  .setup-grid,
  .practice-grid,
  .save-grid {
    grid-template-columns: 1fr;
    gap: 7px;
  }

  .preset-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 7px;
  }

  .preset-btn {
    padding: 9px;
    border-radius: 12px;
  }

  .preset-btn strong {
    font-size: 12px;
  }

  .preset-btn span {
    font-size: 10px;
  }

  .state-guide {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 6px;
  }

  .state-guide div {
    padding: 8px 5px;
  }

  .state-guide strong {
    font-size: 18px;
  }

  .state-guide span {
    font-size: 9px;
  }

  .saved-item {
    grid-template-columns: 1fr;
  }

  .mobile-sticky-transport {
    left: 8px;
    right: 8px;
    bottom: 8px;
    grid-template-columns: 66px 68px minmax(0, 1fr) 66px;
    gap: 6px;
    padding: 7px;
    border-radius: 16px;
  }

  .mobile-bpm-box,
  .mobile-step-box {
    padding: 7px 5px;
  }

  .mobile-bpm-box strong {
    font-size: 21px;
  }

  .mobile-step-box strong {
    font-size: 16px;
  }

  .mobile-start-button {
    font-size: 18px;
    border-radius: 13px;
  }

  .mobile-tap-button {
    font-size: 12px;
    border-radius: 13px;
  }
}

@media (max-width: 390px) {
  .rhythm-shell {
    padding-left: 7px;
    padding-right: 7px;
  }

  .transport-top {
    grid-template-columns: 1fr minmax(112px, .72fr);
  }

  .start-button {
    font-size: 23px;
  }

  .step-button {
    min-height: 43px;
    font-size: 16px;
  }

  .pattern-ruler,
  .step-grid {
    gap: 4px;
  }

  .legend {
    font-size: 8.5px;
  }

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

  .rhythm-disclosure > summary small {
    display: none;
  }

  .mobile-sticky-transport {
    left: 7px;
    right: 7px;
    bottom: 7px;
    grid-template-columns: 58px 60px minmax(0, 1fr) 58px;
    gap: 5px;
    padding: 6px;
  }

  .mobile-bpm-box strong {
    font-size: 19px;
  }

  .mobile-step-box strong {
    font-size: 14px;
  }

  .mobile-start-button {
    font-size: 16px;
  }

  .mobile-tap-button {
    font-size: 11px;
  }
}


/* V7.2.0 PC density polish
   Keeps mobile flow unchanged while tightening desktop spacing and panel height. */
@media (min-width: 901px) {
  .rhythm-shell {
    gap: 10px;
  }

  .rhythm-hero {
    padding: 16px 18px;
    gap: 14px;
    align-items: center;
  }

  .tagline {
    margin-bottom: 7px;
  }

  .rhythm-title {
    font-size: clamp(46px, 6.1vw, 70px);
    line-height: .86;
  }

  .rhythm-sub {
    margin-top: 7px;
    line-height: 1.38;
    font-size: 13px;
  }

  .intro-counter {
    margin-top: 8px;
  }

  .rhythm-app {
    grid-template-columns: minmax(300px, .76fr) minmax(0, 1.24fr);
    gap: 10px;
  }

  .app-pattern {
    grid-row: 1;
    align-self: start;
  }

  .quick-preset-panel {
    grid-row: 2;
    align-self: start;
  }

  .transport-panel,
  .pattern-panel,
  .quick-preset-panel {
    padding: 12px;
    border-radius: 15px;
  }

  .transport-top {
    grid-template-columns: minmax(0, 1fr) 150px;
    gap: 9px;
  }

  .bpm-display {
    padding: 12px;
    border-radius: 15px;
  }

  .bpm-display strong {
    font-size: clamp(50px, 7vw, 76px);
    margin-top: 5px;
  }

  .start-button {
    border-radius: 15px;
    font-size: 24px;
  }

  .control-grid {
    grid-template-columns: minmax(120px, .9fr) minmax(0, 1fr) 130px;
    gap: 7px;
    margin-top: 9px;
  }

  .input-row input,
  .input-row select {
    padding: 8px 9px;
    font-size: 14px;
    border-radius: 10px;
  }

  .btn {
    padding: 8px 9px;
  }

  .btn.small {
    padding: 7px 7px;
  }

  .transport-stats {
    gap: 7px;
    margin-top: 9px;
  }

  .transport-stats div {
    padding: 8px;
    border-radius: 11px;
  }

  .transport-stats strong {
    margin-top: 3px;
    font-size: 14px;
  }

  .status-line,
  .hint-line,
  .panel-copy {
    font-size: 11.5px;
    line-height: 1.35;
  }

  .pattern-head {
    margin-bottom: 8px;
  }

  .legend-row {
    gap: 5px;
  }

  .legend {
    padding: 5px 8px;
    font-size: 10px;
  }

  .pattern-ruler,
  .step-grid {
    gap: 5px;
  }

  .pattern-ruler {
    margin-bottom: 5px;
  }

  .step-button {
    min-height: 48px;
    border-radius: 12px;
    font-size: clamp(15px, 2.1vw, 22px);
  }

  .edit-toolbar {
    gap: 6px;
    margin-top: 10px;
  }

  .quick-preset-grid {
    gap: 6px;
    margin-top: 8px;
  }

  .quick-preset-grid .preset-btn {
    min-height: 42px;
    padding: 8px;
    border-radius: 11px;
  }

  .quick-preset-grid .preset-btn span {
    line-height: 1.2;
  }

  .rhythm-disclosure-stack {
    gap: 9px;
  }

  .rhythm-disclosure > summary {
    min-height: 46px;
    padding: 11px 12px;
  }

  .disclosure-body {
    padding: 10px;
  }

  .sub-panel {
    padding: 12px;
    border-radius: 13px;
  }

  .preset-grid,
  .saved-list {
    gap: 7px;
  }

  .seo-section {
    margin-top: 0;
  }
}

@media (min-width: 901px) and (max-width: 1120px) {
  .rhythm-title {
    font-size: clamp(42px, 5.6vw, 62px);
  }

  .rhythm-app {
    grid-template-columns: minmax(270px, .72fr) minmax(0, 1.28fr);
  }

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

  .transport-top {
    grid-template-columns: 1fr 132px;
  }

  .step-button {
    min-height: 44px;
  }
}


/* V7.3.0 Rhythm Creator PC layout polish
   - Top BPM panel and Pattern Grid panel share the same row height.
   - Quick Presets becomes a full-width row below the main editor.
   - Six advanced panels stay collapsed in a clean 2-column x 3-row layout. */
@media (min-width: 901px) {
  .rhythm-app {
    grid-template-columns: minmax(320px, .76fr) minmax(0, 1.24fr);
    grid-template-rows: auto auto auto;
    align-items: stretch;
  }

  .app-transport {
    grid-column: 1;
    grid-row: 1;
    height: 100%;
    align-self: stretch;
  }

  .app-pattern {
    grid-column: 2;
    grid-row: 1;
    height: 100%;
    align-self: stretch;
    display: flex;
    flex-direction: column;
  }

  .app-pattern .pattern-ruler {
    flex: 0 0 auto;
  }

  .app-pattern .step-grid {
    flex: 1 1 auto;
    align-content: center;
  }

  .app-pattern .edit-toolbar {
    flex: 0 0 auto;
  }

  .step-button {
    min-height: 56px;
  }

  .quick-preset-panel {
    grid-column: 1 / -1;
    grid-row: 2;
    align-self: stretch;
  }

  .quick-preset-panel .compact-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
  }

  .quick-preset-grid {
    grid-template-columns: repeat(8, minmax(0, 1fr));
    gap: 7px;
  }

  .quick-preset-grid .preset-btn {
    min-height: 46px;
  }

  .rhythm-disclosure-stack {
    grid-column: 1 / -1;
    grid-row: 3;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px 10px;
  }

  .rhythm-disclosure {
    align-self: start;
  }

  .rhythm-disclosure:not([open]) > summary {
    border-bottom: 0;
  }

  .rhythm-disclosure > summary {
    min-height: 46px;
  }
}

@media (min-width: 901px) and (max-width: 1120px) {
  .quick-preset-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .step-button {
    min-height: 52px;
  }
}


/* V7.4.0 lower advanced panels fold fix
   The six lower panels should look like compact fold bars on PC until opened. */
@media (min-width: 901px) {
  .rhythm-disclosure-stack {
    align-items: start;
  }

  .rhythm-disclosure {
    min-height: 0;
  }

  .rhythm-disclosure > summary {
    min-height: 48px;
    padding: 12px 13px;
    border-bottom: 0;
  }

  .rhythm-disclosure:not([open]) {
    background: linear-gradient(180deg, rgba(31,36,44,0.94), rgba(18,21,26,0.96));
  }

  .rhythm-disclosure:not([open]) > .disclosure-body,
  .rhythm-disclosure:not([open]) > *:not(summary) {
    display: none !important;
  }

  .rhythm-disclosure[open] > summary {
    border-bottom: 1px solid var(--line-soft);
  }

  .rhythm-disclosure > summary span {
    font-size: 12px;
  }

  .rhythm-disclosure > summary small {
    font-size: 10px;
  }

  .rhythm-disclosure > summary::after {
    width: 22px;
    height: 22px;
  }
}


/* SolAudioLab Mobile Alignment V1 - Rhythm Creator */
@media (max-width: 760px) {
  .rhythm-shell {
    gap: var(--at-mobile-gap, 10px);
  }

  .rhythm-hero,
  .rhythm-app,
  .rhythm-disclosure-stack,
  .control-grid,
  .quick-preset-grid,
  .step-grid,
  .edit-toolbar {
    gap: var(--at-mobile-gap-tight, 8px) !important;
  }

  .tool-panel,
  .transport-panel,
  .settings-panel,
  .pattern-panel,
  .quick-preset-panel,
  .rhythm-disclosure,
  .seo-section {
    border-radius: var(--at-mobile-panel-radius, 15px);
    box-sizing: border-box;
  }

  .rhythm-disclosure > summary {
    min-height: 44px;
  }
}

@media (max-width: 430px) {
  .rhythm-shell {
    gap: var(--at-mobile-gap, 9px);
  }

  .rhythm-hero,
  .rhythm-app,
  .rhythm-disclosure-stack,
  .control-grid,
  .quick-preset-grid,
  .step-grid,
  .edit-toolbar {
    gap: 7px !important;
  }

  .tool-panel,
  .transport-panel,
  .settings-panel,
  .pattern-panel,
  .quick-preset-panel,
  .rhythm-disclosure,
  .seo-section {
    border-radius: var(--at-mobile-panel-radius, 14px);
  }

  .rhythm-disclosure > summary {
    min-height: 42px;
  }
}


/* SolAudioLab Mobile Alignment V2 - Rhythm Creator volume and button polish */
.master-volume-row {
  grid-column: 1 / -1;
  display: grid;
  gap: 7px;
  min-width: 0;
  padding: 10px 11px;
  border: 1px solid var(--line-soft);
  border-radius: 13px;
  background: rgba(0,0,0,0.16);
  box-shadow: var(--inset);
}

.master-volume-row label {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 950;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.master-volume-row label strong {
  color: var(--green);
  font-size: 12px;
}

.master-volume-row input {
  width: 100%;
  min-width: 0;
  accent-color: var(--accent-2);
}

@media (max-width: 760px) {
  #tapTempoBtn {
    min-height: 64px;
  }

  .master-volume-row {
    padding: 9px 10px;
    border-radius: var(--at-mobile-inner-radius, 12px);
  }
}

@media (max-width: 430px) {
  #tapTempoBtn {
    min-height: 58px;
  }

  .master-volume-row {
    padding: 8px 9px;
  }
}


/* V35 Rhythm Creator grid label balance
   Step counts are now shown inside the Grid dropdown options, so the setup rows stay even. */
.grid-row select {
  margin-bottom: 0;
}