@media (max-width: 900px) {
  .transport-btn--mix {
    display: inline-flex;
  }

  /* ETAPA — letra em abas no mobile: só uma camada por linha por vez
     (Letra OU Tradução OU Pronúncia), em vez das três empilhadas do
     desktop. Reaproveita o MESMO lyricsLayerPrefs -- as abas só mudam
     como esse estado já existente é apresentado. */
  .lyrics-layers {
    display: none;
  }

  .lyrics-tabs {
    display: flex;
  }

  #lyrics-view-body[data-active-tab='translation'] .lv-pronunciation,
  #lyrics-view-body[data-active-tab='pronunciation'] .lv-translation {
    display: none;
  }

  #lyrics-view-body[data-active-tab='translation'] .lv-original:not(.lv-hidden),
  #lyrics-view-body[data-active-tab='pronunciation'] .lv-original:not(.lv-hidden) {
    display: none;
  }

  /* Volume/Pan ficam ocultos por padrão nas tracks no mobile -- só M/S
     aparecem direto. O botão MIX (acima) revela os MESMOS controles
     (não são duplicados, é o mesmo elemento, só escondido/mostrado). */
  .track-channel-strip__fader {
    display: none;
  }

  .rehearsal.mix-panel-open .track-channel-strip__fader {
    display: flex;
  }

  .home-empty-hero {
    padding: 34px 18px 28px;
  }

  .demo-song-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .demo-song-card__actions {
    margin-left: 0;
    width: 100%;
  }

  .demo-song-card__actions .btn {
    flex: 1;
  }

  .jam-card__content {
    padding: 26px 18px;
    min-height: 130px;
  }

  .jam-intro-compare {
    grid-template-columns: 1fr;
  }

  .jam-setlist-row {
    grid-template-columns: 24px 1fr;
    row-gap: 6px;
  }

  .jam-setlist-row .song-meta-row {
    grid-column: 1 / -1;
  }

  .jam-overview-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .home-greeting__inner {
    padding: 30px 20px;
  }

  .app-shell {
    grid-template-columns: 1fr;
  }

  /* No mobile o <aside> em si não é mais uma barra visível -- só serve
     de contêiner pro header fixo e pro drawer (ambos position:fixed,
     não dependem do layout do próprio <aside>). */
  .sidebar {
    position: static;
    height: auto;
    padding: 0;
    border-right: none;
  }

  .sidebar-brand,
  .sidebar-nav--desktop,
  .sidebar-foot {
    display: none;
  }

  /* ---------- Header mobile: [ ☰ ] ENSAYA PLAY ---------- */

  .mobile-header {
    display: flex;
    align-items: center;
    gap: 10px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 56px;
    padding: 0 10px;
    background: var(--bg-void);
    border-bottom: 1px solid var(--border-soft);
    z-index: 40;
  }

  .mobile-header__menu-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
  }

  .mobile-header__menu-btn:active {
    background: var(--bg-panel);
  }

  .mobile-header__title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 0.04em;
    color: var(--text-primary);
  }

  /* ---------- Drawer lateral (navegação completa do app) ---------- */

  .mobile-drawer-overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 60;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
  }

  .mobile-drawer-overlay.is-open {
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-drawer {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 80%;
    max-width: 320px;
    background: var(--bg-void);
    border-right: 1px solid var(--border-soft);
    display: flex;
    flex-direction: column;
    padding: 16px 12px calc(env(safe-area-inset-bottom, 0px) + 16px);
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform 0.22s ease;
  }

  .mobile-drawer-overlay.is-open .mobile-drawer {
    transform: translateX(0);
  }

  .mobile-drawer__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 8px 16px;
    margin-bottom: 6px;
    border-bottom: 1px solid var(--border-soft);
  }

  .mobile-drawer__title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.04em;
  }

  .mobile-drawer__nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
  }

  .mobile-drawer__nav .nav-item {
    flex-direction: row;
    gap: 12px;
    padding: 12px 10px;
    font-size: 0.92rem;
    text-align: left;
    width: 100%;
    border-left: 2px solid transparent;
    border-top: none;
  }

  .mobile-drawer__nav .nav-item--active {
    border-left-color: var(--accent);
    color: var(--accent);
    background: var(--bg-panel);
  }

  .mobile-drawer__nav .nav-icon {
    width: 19px;
    height: 19px;
    flex-shrink: 0;
  }

  .mobile-drawer__nav .nav-item span {
    white-space: normal;
  }

  .mobile-drawer__divider {
    height: 1px;
    background: var(--border-soft);
    margin: 10px 4px;
  }

  .mobile-drawer__nav--secondary {
    margin-top: auto;
    padding-top: 6px;
  }

  .main-content {
    padding: 72px 18px 32px;
    max-height: none;
  }

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

  .rehearsal-stats {
    gap: 14px;
  }

  .continue-row {
    grid-template-columns: 40px 1fr;
    grid-template-areas:
      'cover name'
      'progress progress';
    gap: 6px 12px;
  }

  .continue-row__cover {
    grid-area: cover;
  }

  .continue-row__name {
    grid-area: name;
  }

  .continue-row__progress {
    grid-area: progress;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .toolbar .input {
    flex: 0 0 auto;
    width: 100%;
  }

  .toolbar .select {
    flex: 1 1 auto;
  }

  .transport-btn span,
  .time-readout {
    font-size: 0.8rem;
  }

  .control-row__label {
    flex-basis: 100%;
  }

  .segmented__btn {
    padding: 7px 9px;
    font-size: 0.72rem;
  }

  .wf-toolbar {
    gap: 8px;
  }

  .marker-form {
    flex-direction: column;
    align-items: stretch;
  }

  .marker-form .input {
    flex: 0 0 auto;
    width: 100%;
  }

  .marker-list li {
    flex-wrap: wrap;
  }

  .lyrics-row {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-soft);
  }

  .lyrics-row__fields {
    grid-template-columns: 1fr;
  }

  .lyrics-row__index,
  .lyrics-row__time {
    text-align: left;
  }

  .mixer-channel {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .lyrics-view-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .lyrics-view-row__time {
    order: -1;
  }

  .take-row {
    flex-direction: column;
    align-items: stretch;
  }

  .take-row__name {
    flex: 1 1 auto;
  }

  .record-controls {
    gap: 10px;
  }

  .daw-track__header {
    gap: 6px;
  }

  .daw-track__meta {
    order: 5;
    flex-basis: 100%;
    margin-right: 0;
  }

  .daw-track__controls input[type='range'] {
    width: 70px;
  }

  .metronome-row {
    gap: 8px;
  }

  .metronome-volume input[type='range'] {
    width: 70px;
  }

  .select--compact {
    flex: 1 1 100px;
  }
}

@media (max-width: 480px) {
  .track-channel-strip,
  .timeline-ruler__spacer {
    width: 108px;
    flex-basis: 108px;
  }

  .global-playhead {
    left: 108px;
  }

  .home-greeting__inner {
    padding: 22px 16px;
  }

  .home-greeting h1 {
    font-size: 1.6rem;
  }

  .how-it-works {
    grid-template-columns: 1fr;
  }

  .home-empty-hero__title {
    font-size: 1.5rem;
  }

  .rehearsal-head h1 {
    font-size: 1.4rem;
  }

  .playback-controls {
    flex-wrap: wrap;
    row-gap: 10px;
  }

  .time-readout {
    margin-left: 0;
    width: 100%;
    text-align: right;
  }

  .karaoke-view {
    max-height: 60vh;
    padding: 16px 8px;
  }

  .karaoke-line.is-current .lv-original {
    font-size: 1.25rem;
  }

  .lyrics-layers {
    flex-wrap: wrap;
    gap: 8px 14px;
  }
}

/* Telas de auth escondem o header mobile junto com a sidebar -- não precisa do respiro reservado pra ele */
body.is-auth-screen .main-content {
  padding-top: 22px;
}