/**
 * STG-UI-005 — Séquenceur (#page-sequencer)
 * Override habillage light sur legacy app.css (Quick + Advanced shell).
 * Ne pas toucher à la logique audio / step en JS.
 */

/* ── S0 · Page shell ─────────────────────────────────────────────────── */
#page-sequencer.page {
  max-width: 1280px;
  padding: var(--sp-5, 24px) var(--sp-6, 32px) var(--sp-9, 96px);
  color: var(--stg-ink, #161a14);
}

#page-sequencer #quickSequencerRoot {
  background: var(--stg-paper-deep, #f0eee8);
  border-radius: var(--stg-r-xl, 32px);
  padding: var(--sp-5, 24px);
  border: none;
  box-shadow: 0 8px 22px rgba(22, 26, 20, 0.05), inset 0 0 0 1px rgba(22, 26, 20, 0.04);
}

/* ── S1 · Transport header (Home hero deep green — stg-canvas-deep) ───── */
#page-sequencer .floating-header {
  background: var(--stg-canvas-deep, #2c5230);
  color: var(--stg-ink-on-deep, #f4ecd8);
  border: none;
  border-radius: var(--stg-r-2xl, 40px);
  box-shadow: 0 12px 40px rgba(22, 26, 20, 0.12);
  backdrop-filter: none;
  width: 100%;
  max-width: none;
  padding: var(--sp-5, 24px) var(--sp-6, 32px);
}

#page-sequencer .now-playing-label {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: var(--fs-caption, 0.75rem);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--stg-ink-on-deep-2, #d9f274);
}

#page-sequencer .now-playing-name {
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--stg-ink-on-deep, #f4ecd8);
}

#page-sequencer .now-playing-name--editable {
  border-bottom-color: rgba(244, 236, 216, 0.35);
}

#page-sequencer .now-playing-name--editable:focus {
  border-bottom-color: var(--stg-ink-on-deep, #f4ecd8);
}

#page-sequencer .now-playing-sub {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: var(--fs-small, 0.875rem);
  color: rgba(244, 236, 216, 0.8);
}

#page-sequencer .now-playing-sub a.tm-profile-deep-link,
#page-sequencer .tm-profile-deep-link {
  color: rgba(244, 236, 216, 0.9);
  font-weight: 500;
}

#page-sequencer .now-playing-sub a.tm-profile-deep-link:hover,
#page-sequencer .tm-profile-deep-link:hover {
  color: var(--stg-ink-on-deep, #f4ecd8);
}

#page-sequencer .dirty-star {
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  color: var(--stg-pop-peach, #f6c7b8);
  font-size: 1.5rem;
}

#page-sequencer .icon-history-btn {
  border: 1px solid rgba(244, 236, 216, 0.35);
  background: rgba(244, 236, 216, 0.08);
  color: var(--stg-ink-on-deep, #f4ecd8);
  border-radius: var(--stg-r-sm, 8px);
}

#page-sequencer .icon-history-btn:hover:not(:disabled) {
  background: rgba(244, 236, 216, 0.16);
  border-color: rgba(244, 236, 216, 0.55);
  color: var(--stg-ink-on-deep, #f4ecd8);
  transform: scale(1.04);
}

#page-sequencer .icon-history-btn:disabled {
  opacity: 0.35;
  border-color: rgba(244, 236, 216, 0.2);
  color: rgba(244, 236, 216, 0.45);
}

#page-sequencer .play-pause-btn {
  width: 38px;
  height: 38px;
  background: var(--stg-accent, #d9f274);
  color: var(--stg-ink, #161a14);
  box-shadow: none;
  font-size: 0.95rem;
  transition: transform 0.12s ease, background 0.12s ease;
}

#page-sequencer .play-pause-btn:hover {
  filter: none;
  background: var(--stg-paper, #ffffff);
  color: var(--stg-ink, #161a14);
  transform: scale(1.06);
}

#page-sequencer .play-pause-btn.transport-playing {
  background: var(--stg-danger, #b44a3a);
  color: var(--stg-paper, #ffffff);
  box-shadow: none;
}

#page-sequencer .play-pause-btn.transport-playing:hover {
  filter: brightness(1.12);
  background: var(--stg-danger, #b44a3a);
}

#page-sequencer .bpm-control {
  background: rgba(244, 236, 216, 0.12);
  border: none;
  border-radius: var(--stg-r-pill, 9999px);
  padding: 6px 10px 6px 14px;
  min-width: auto;
}

#page-sequencer .bpm-control-label {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: rgba(244, 236, 216, 0.65);
  opacity: 1;
}

#page-sequencer .bpm-input {
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-weight: 500;
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  color: var(--stg-ink-on-deep, #f4ecd8);
  background: transparent;
}

#page-sequencer .bpm-input:focus {
  color: var(--stg-ink-on-deep, #f4ecd8);
  outline: none;
}

#page-sequencer .bpm-input-wrap {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

#page-sequencer .bpm-step-stack {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  align-items: center;
  justify-content: center;
}

#page-sequencer .bpm-step-btn {
  width: 16px;
  height: 12px;
  border: none;
  border-radius: 9999px;
  background: rgba(244, 236, 216, 0.18);
  color: var(--stg-ink-on-deep, #f4ecd8);
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 10px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.12s ease, transform 0.08s ease;
}

#page-sequencer .bpm-step-btn:hover {
  background: rgba(244, 236, 216, 0.3);
}

#page-sequencer .bpm-step-btn:active {
  transform: translateY(1px);
}

#page-sequencer .bpm-step-btn--up,
#page-sequencer .bpm-step-btn--down {
  padding: 0;
}

#page-sequencer .master-volume-control {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px 6px 10px;
  background: rgba(244, 236, 216, 0.12);
  border-radius: var(--stg-r-pill, 9999px);
  min-width: 7rem;
}

#page-sequencer .master-volume-btn {
  background: transparent;
  border: none;
  color: var(--stg-ink-on-deep, #f4ecd8);
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  font-size: 14px;
}

#page-sequencer .master-volume-btn:hover {
  color: var(--stg-paper, #fff);
}

#page-sequencer .master-volume-btn.muted {
  color: rgba(244, 236, 216, 0.45);
  opacity: 1;
}

#page-sequencer .master-volume-slider {
  width: 88px;
  height: 4px;
  margin: 0;
  accent-color: var(--stg-accent, #d9f274);
  cursor: pointer;
}

#page-sequencer .sequencer-header-action-btn {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 8px 14px;
  border-radius: var(--stg-r-pill, 9999px);
  border: none;
  background: transparent;
  color: rgba(244, 236, 216, 0.75);
  min-width: auto;
}

#page-sequencer .sequencer-header-action-btn:hover {
  background: rgba(244, 236, 216, 0.12);
  color: var(--stg-ink-on-deep, #f4ecd8);
}

#page-sequencer .sequencer-header-action-btn:active {
  background: var(--stg-accent, #d9f274);
  color: var(--stg-ink, #161a14);
}

/* ── S5 · Mode toggle + pattern bar ──────────────────────────────────── */
#page-sequencer .sequencer-mode-toggle {
  background: var(--stg-paper-deep, #f0eee8);
  border: none;
  padding: 3px;
  margin-top: var(--sp-5, 24px);
  display: grid;
  grid-template-columns: 1fr 1fr;
}

#page-sequencer .sequencer-mode-btn {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  min-width: 110px;
  padding: 8px 18px;
  background: transparent;
  color: var(--stg-ink-3, #6b6b5f);
  text-align: center;
}

#page-sequencer .sequencer-mode-btn:hover:not(.active) {
  background: var(--stg-paper, #ffffff);
  color: var(--stg-ink, #161a14);
}

#page-sequencer .sequencer-mode-btn.active {
  background: var(--stg-ink, #161a14);
  color: var(--stg-paper, #ffffff);
  box-shadow: none;
}

#page-sequencer .sequencer-container {
  width: 100%;
  max-width: none;
  margin: var(--sp-5, 24px) 0 var(--sp-7, 48px);
  padding: 0;
  background: transparent;
}

/* ── Pattern strip (STG-UI-005 pat-sel) ─────────────────────────────── */
#page-sequencer .pattern-selector-group.pat-sel {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: var(--sp-3, 12px);
}

#page-sequencer .pat-sel__left,
#page-sequencer .pattern-selector-primary {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  min-width: 0;
  flex-wrap: wrap;
}

#page-sequencer .pat-sel__right,
#page-sequencer .pattern-actions-save {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  flex-wrap: wrap;
}

#page-sequencer .pat-sel__lab,
#page-sequencer .selector-label {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--stg-ink-4, #a6a59b);
  margin: 0;
  flex-shrink: 0;
}

#page-sequencer #patternSelect.pattern-dropdown-pill {
  appearance: none;
  -webkit-appearance: none;
  display: inline-block;
  max-width: min(280px, 42vw);
  min-width: 140px;
  width: auto;
  padding: 6px 28px 6px 12px;
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.3;
  color: var(--stg-ink, #161a14);
  background-color: var(--stg-paper-deep, #f3f2ee);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12' fill='none' stroke='%236b6b5f' stroke-width='1.6'%3E%3Cpath d='M3 4.5l3 3 3-3'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 12px;
  border: none;
  border-radius: var(--stg-r-pill, 9999px);
  cursor: pointer;
  transition: background-color 0.12s ease;
  box-shadow: none;
}

#page-sequencer #patternSelect.pattern-dropdown-pill:hover,
#page-sequencer #patternSelect.pattern-dropdown-pill:focus {
  background-color: var(--stg-paper-2, #fafaf7);
  outline: none;
  border: none;
  box-shadow: none;
}

#page-sequencer #patternSelect.pattern-dropdown-pill option,
#page-sequencer #patternSelect.pattern-dropdown-pill optgroup {
  background: var(--stg-paper, #fff);
  color: var(--stg-ink, #161a14);
  font-size: 13px;
  font-weight: 500;
}

#page-sequencer .pattern-nav-cluster {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

#page-sequencer .nav-circ.control-btn-nav {
  width: 30px;
  height: 30px;
  min-width: 30px;
  padding: 0;
  margin: 0;
  border: none;
  border-radius: 50%;
  background: var(--stg-paper-deep, #f3f2ee);
  color: var(--stg-ink-3, #6b6b5f);
  cursor: pointer;
  display: grid;
  place-items: center;
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 0;
  letter-spacing: 0;
  text-transform: none;
  transition: background 0.12s ease, color 0.12s ease;
  box-shadow: none;
}

#page-sequencer .nav-circ.control-btn-nav:hover {
  background: var(--stg-paper-2, #fafaf7);
  color: var(--stg-ink, #161a14);
  border: none;
}

#page-sequencer .nav-circ.control-btn-nav svg {
  display: block;
  width: 12px;
  height: 12px;
}

#page-sequencer .add-track-dropdown {
  background: var(--stg-paper, #ffffff);
  color: var(--stg-ink, #161a14);
  border: 1px solid var(--stg-border-strong, rgba(22, 26, 20, 0.14));
  border-radius: var(--stg-r-sm, 8px);
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-weight: 500;
}

#page-sequencer .control-btn {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: none;
  border-radius: var(--stg-r-pill, 9999px);
  border: 1px solid var(--stg-border-strong, rgba(22, 26, 20, 0.14));
  background: var(--stg-paper, #ffffff);
  color: var(--stg-ink, #161a14);
}

#page-sequencer .control-btn:hover {
  background: var(--stg-paper-deep, #f3f2ee);
}

#page-sequencer .control-btn-save,
#page-sequencer .control-btn-publish {
  background: var(--stg-accent, #d9f274);
  color: var(--stg-ink, #161a14);
  border-color: var(--stg-accent, #d9f274);
  font-weight: 600;
}

#page-sequencer .control-btn-save:hover,
#page-sequencer .control-btn-publish:hover {
  filter: brightness(0.98);
}

/* SEQ-C3 / SEQ-G — ⋮ aligné nav-circ + menu STG (écrase le thème sombre app.css) */
#page-sequencer .sequencer-pattern-menu-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
}

#page-sequencer .control-btn-more {
  width: 30px;
  height: 30px;
  min-width: 30px;
  padding: 0;
  margin: 0;
  border: none;
  border-radius: 50%;
  background: var(--stg-paper-deep, #f3f2ee);
  color: var(--stg-ink-3, #6b6b5f);
  font-size: 17px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0;
  display: grid;
  place-items: center;
  box-shadow: none;
  transition: background 0.12s ease, color 0.12s ease, box-shadow 0.12s ease;
}

#page-sequencer .control-btn-more:hover {
  background: var(--stg-paper-2, #fafaf7);
  color: var(--stg-ink, #161a14);
  filter: none;
}

#page-sequencer .control-btn-more[aria-expanded="true"] {
  background: var(--stg-paper, #ffffff);
  color: var(--stg-ink, #161a14);
  box-shadow: 0 0 0 2px var(--stg-border-strong, rgba(22, 26, 20, 0.14));
}

#page-sequencer .sequencer-pattern-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 11.5rem;
  z-index: 40;
  padding: 6px;
  background: var(--stg-paper, #ffffff);
  border: 1px solid var(--stg-border, rgba(22, 26, 20, 0.08));
  box-shadow: var(--stg-lift-2, 0 8px 24px rgba(22, 26, 20, 0.08));
  border-radius: var(--stg-r-md, 16px);
}

#page-sequencer .sequencer-pattern-dropdown__item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 12px;
  border: none;
  border-radius: var(--stg-r-sm, 8px);
  background: transparent;
  color: var(--stg-ink, #161a14);
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
}

#page-sequencer .sequencer-pattern-dropdown__item:hover {
  background: var(--stg-paper-deep, #f3f2ee);
}

#page-sequencer .sequencer-pattern-dropdown__item--danger {
  color: #b42318;
}

#page-sequencer .sequencer-pattern-dropdown__item--danger:hover {
  background: rgba(180, 35, 24, 0.08);
}

/* ── S2 · Quick block — STG-UI-011 Gemini (16 steps / bar, quick-16) ─── */
#page-sequencer #quickSequencerRoot.seq-block {
  background: var(--stg-paper-deep, #f0eee8);
  border-radius: var(--stg-r-xl, 32px);
  padding: 20px;
}

#page-sequencer .seq-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

#page-sequencer .seq-kit {
  display: flex;
  align-items: center;
  gap: 6px;
}

#page-sequencer .seq-kit__lab {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--stg-ink-4, #a6a59b);
}

#page-sequencer .seq-kit__btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--stg-paper, #fff);
  border: none;
  cursor: default;
  border-radius: var(--stg-r-md, 16px);
  padding: 5px 10px;
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-size: 14px;
  letter-spacing: -0.01em;
  color: var(--stg-ink, #161a14);
  transition: background 0.12s;
}

#page-sequencer .seq-kit__btn em {
  font-style: italic;
}

#page-sequencer .seq-kit__btn:hover { background: var(--stg-paper, #fff); }

/* Neutralize legacy app.css quick-window (gold/dark) inside STG block */
#page-sequencer #quickSequencerRoot .quick-window-nav {
  width: auto;
  max-width: none;
  margin: 0;
  padding: 0;
  flex-direction: row;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: none;
  border-radius: 0;
  box-shadow: none;
  backdrop-filter: none;
}

#page-sequencer #quickSequencerRoot .quick-window-segments-box {
  display: inline-flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: flex-start;
  gap: 0;
  padding: 2px;
  border: none;
  border-radius: var(--stg-r-pill, 9999px);
  background: var(--stg-paper, #fff);
  width: auto;
  max-width: none;
  box-shadow: none;
}

#page-sequencer #quickSequencerRoot .quick-window-segments {
  display: inline-flex;
  flex-wrap: nowrap;
  gap: 0;
  align-items: center;
  justify-content: flex-start;
}

#page-sequencer #quickSequencerRoot .quick-window-segment {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1;
  min-width: 30px;
  height: 26px;
  padding: 0 10px;
  border-radius: var(--stg-r-pill, 9999px);
  border: none;
  background: transparent;
  color: var(--stg-ink-3, #6b6b5f);
  box-shadow: none;
  text-align: center;
}

#page-sequencer #quickSequencerRoot .quick-window-segment:hover {
  background: transparent;
  color: var(--stg-ink, #161a14);
}

#page-sequencer #quickSequencerRoot .quick-window-segment.active {
  background: var(--stg-ink, #161a14);
  color: var(--stg-paper, #fff);
  border: none;
  box-shadow: none;
}

#page-sequencer #quickSequencerRoot .quick-segment-auto-btn {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
  padding: 4px 12px;
  min-height: 26px;
  border: none;
  border-radius: var(--stg-r-pill, 9999px);
  background: var(--stg-paper, #fff);
  color: var(--stg-ink-3, #6b6b5f);
  box-shadow: none;
  transition: background 0.12s, color 0.12s;
}

#page-sequencer #quickSequencerRoot .quick-segment-auto-btn:hover {
  color: var(--stg-ink, #161a14);
  background: var(--stg-paper-deep, #f3f2ee);
}

#page-sequencer #quickSequencerRoot .quick-segment-auto-btn.active,
#page-sequencer #quickSequencerRoot .quick-segment-auto-btn[aria-pressed="true"] {
  background: var(--stg-accent, #d9f274);
  color: var(--stg-ink, #161a14);
  font-weight: 600;
  border: none;
  box-shadow: none;
}

#page-sequencer #quickSequencerRoot .quick-segment-auto-btn.active:hover,
#page-sequencer #quickSequencerRoot .quick-segment-auto-btn[aria-pressed="true"]:hover {
  background: var(--stg-accent, #d9f274);
  filter: brightness(1.04);
  color: var(--stg-ink, #161a14);
}

#page-sequencer #quickSequencerRoot .quick-window-nav-title {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--stg-ink-4, #a6a59b);
  opacity: 1;
  text-transform: uppercase;
}

#page-sequencer .seq-bar-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
  box-shadow: none;
}

#page-sequencer .seq-bar-nav__lab,
#page-sequencer .quick-window-nav-title {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--stg-ink-4, #a6a59b);
  opacity: 1;
}

#page-sequencer .bar-segs,
#page-sequencer .quick-window-segments-box {
  display: inline-flex;
  background: var(--stg-paper, #fff);
  border-radius: var(--stg-r-pill, 9999px);
  padding: 2px;
  gap: 0;
  box-shadow: none;
}

#page-sequencer .quick-window-segments {
  display: inline-flex;
  gap: 0;
}

#page-sequencer .bar-seg,
#page-sequencer .quick-window-segment {
  min-width: 30px;
  height: 26px;
  border-radius: var(--stg-r-pill, 9999px);
  font-size: 12px;
  font-weight: 500;
  color: var(--stg-ink-3, #6b6b5f);
  cursor: pointer;
  background: transparent;
  border: none;
  font-variant-numeric: tabular-nums;
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  padding: 0 10px;
}

#page-sequencer .bar-seg:hover,
#page-sequencer .quick-window-segment:hover {
  color: var(--stg-ink, #161a14);
  background: transparent;
}

#page-sequencer .bar-seg.active,
#page-sequencer .bar-seg[aria-selected="true"],
#page-sequencer .quick-window-segment.active {
  background: var(--stg-ink, #161a14);
  color: var(--stg-paper, #fff);
}

#page-sequencer .auto-label,
#page-sequencer .quick-segment-auto-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 500;
  color: var(--stg-ink-3, #6b6b5f);
  cursor: pointer;
  user-select: none;
  letter-spacing: 0;
  text-transform: none;
}

/* Legacy app.css .step-pad — full reset to STG-UI-011 .p */
#page-sequencer #quickSequencerRoot #drumTracks button.step-pad {
  border: none;
  border-radius: 6px;
  background: var(--stg-paper, #fff);
  /* SEQ-D2 — contraste vs fond crème (#f0eee8) sur écrans faibles */
  box-shadow:
    inset 0 0 0 1px rgba(22, 26, 20, 0.12),
    0 1px 0 rgba(22, 26, 20, 0.04);
  cursor: pointer;
  touch-action: none;
  user-select: none;
  transition: transform 0.08s, background 0.08s, box-shadow 0.08s;
  position: relative;
}

#page-sequencer #quickSequencerRoot #drumTracks button.step-pad.step-downbeat,
#page-sequencer #quickSequencerRoot #drumTracks button.step-pad.b {
  border: none;
  box-shadow: inset 0 -2px 0 0 rgba(22, 26, 20, 0.06);
}

#page-sequencer #quickSequencerRoot #drumTracks button.step-pad.active,
#page-sequencer #quickSequencerRoot #drumTracks button.step-pad.on {
  background: var(--pad-on, #c8d8c4);
  box-shadow: none;
}

#page-sequencer #quickSequencerRoot #drumTracks button.step-pad.step-downbeat.active,
#page-sequencer #quickSequencerRoot #drumTracks button.step-pad.b.active {
  background: var(--pad-on, #c8d8c4);
  box-shadow: inset 0 -2px 0 0 rgba(22, 26, 20, 0.14);
}

#page-sequencer #quickSequencerRoot #drumTracks button.step-pad.playing {
  outline: none;
  box-shadow: none;
}

#page-sequencer #drumTracks {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

#page-sequencer .seq-ruler,
#page-sequencer .seq-trk {
  display: grid;
  grid-template-columns: 80px 1fr 90px;
  column-gap: 8px;
  align-items: center;
}

#page-sequencer .seq-ruler {
  margin-bottom: 4px;
}

#page-sequencer .seq-ruler__nums,
#page-sequencer .trk-pads {
  display: flex;
  gap: 8px;
  min-width: 0;
}

#page-sequencer .beat-nums,
#page-sequencer .beat-group {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3px;
  min-width: 0;
}

#page-sequencer .beat-nums span {
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 8.5px;
  color: var(--stg-ink-4, #a6a59b);
  text-align: center;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

#page-sequencer .beat-nums span.b {
  color: var(--stg-ink-2, #38382f);
  font-weight: 600;
}

#page-sequencer .trk-name {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 4px 8px;
  background: transparent;
  border: none;
  cursor: pointer;
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 10.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--stg-ink-2, #38382f);
  border-radius: var(--stg-r-sm, 8px);
  transition: background 0.12s;
  text-align: left;
}

#page-sequencer .trk-name:hover {
  background: var(--stg-paper, #fff);
}

#page-sequencer .trk-name .prelisten-ic {
  opacity: 0;
  transition: opacity 0.12s;
  flex-shrink: 0;
}

#page-sequencer .trk-name:hover .prelisten-ic {
  opacity: 0.7;
}

#page-sequencer #quickSequencerRoot .p,
#page-sequencer #quickSequencerRoot #drumTracks button.step-pad {
  aspect-ratio: 1;
  width: 100%;
  min-width: 0;
  min-height: 0;
  padding: 0;
  margin: 0;
}

#page-sequencer #quickSequencerRoot .p:active,
#page-sequencer #quickSequencerRoot #drumTracks button.step-pad:active {
  transform: translateY(0);
}

#page-sequencer .p:hover,
#page-sequencer #drumTracks button.step-pad:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(22, 26, 20, 0.07), inset 0 0 0 1px rgba(22, 26, 20, 0.06);
}

#page-sequencer .p.b,
#page-sequencer #drumTracks button.step-pad.b {
  box-shadow: inset 0 -2px 0 0 rgba(22, 26, 20, 0.06);
}

#page-sequencer .p.on,
#page-sequencer .p.active,
#page-sequencer #drumTracks button.step-pad.on,
#page-sequencer #drumTracks button.step-pad.active {
  background: var(--pad-on, #c8d8c4);
  box-shadow: none;
}

#page-sequencer .p.b.on,
#page-sequencer .p.b.active,
#page-sequencer #drumTracks button.step-pad.b.active {
  box-shadow: inset 0 -2px 0 0 rgba(22, 26, 20, 0.14);
}

#page-sequencer .p.on:hover,
#page-sequencer .p.active:hover {
  transform: translateY(-1px);
  filter: brightness(1.04);
}

#page-sequencer #quickSequencerRoot .p.now,
#page-sequencer #quickSequencerRoot .p.step-pad--playhead,
#page-sequencer #quickSequencerRoot #drumTracks button.step-pad.now,
#page-sequencer #quickSequencerRoot #drumTracks button.step-pad.step-pad--playhead {
  outline: 2px solid var(--stg-ink, #161a14);
  outline-offset: -2px;
  box-shadow: none;
}

#page-sequencer #quickSequencerRoot.seq-block.is-playing .p.now,
#page-sequencer #quickSequencerRoot.seq-block.is-playing .p.step-pad--playhead,
#page-sequencer #quickSequencerRoot.seq-block.is-playing #drumTracks button.step-pad.now,
#page-sequencer #quickSequencerRoot.seq-block.is-playing #drumTracks button.step-pad.step-pad--playhead {
  outline-color: var(--stg-accent, #d9f274);
}

#page-sequencer .seq-trk.is-muted .p,
#page-sequencer .seq-trk.is-muted button.step-pad {
  opacity: 0.35;
}

#page-sequencer .seq-trk.is-muted .trk-name {
  color: var(--stg-ink-4, #a6a59b);
}

#page-sequencer .drum-tracks--solo-mode .seq-trk.is-solo-dim {
  opacity: 0.34;
  filter: saturate(0.65);
}

#page-sequencer .trk-side {
  display: flex;
  justify-content: center;
  align-items: center;
}

#page-sequencer .trk-ctrl-pill {
  display: flex;
  align-items: center;
  gap: 3px;
  background: var(--stg-paper, #fff);
  border-radius: var(--stg-r-pill, 9999px);
  padding: 3px 4px;
  box-shadow: inset 0 0 0 1px rgba(22, 26, 20, 0.06);
}

#page-sequencer .trk-ctrl-menu-wrap {
  position: relative;
}

#page-sequencer .trk-ctrl-dropdown {
  position: absolute;
  right: 0;
  top: calc(100% + 4px);
  z-index: 40;
  min-width: 148px;
  padding: 4px;
  background: var(--stg-paper, #ffffff);
  border: 1px solid var(--stg-border, rgba(22, 26, 20, 0.08));
  border-radius: var(--stg-r-md, 16px);
  box-shadow: var(--stg-lift-2);
}

#page-sequencer .trk-ctrl-dropdown__item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 12px;
  border: none;
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 12px;
  font-weight: 500;
  color: var(--stg-ink, #161a14);
}

#page-sequencer .trk-ctrl-dropdown__item:hover {
  background: var(--stg-paper-deep, #f3f2ee);
}

#page-sequencer .trk-ctrl-dropdown__item--danger {
  color: var(--stg-danger, #b44a3a);
}

#page-sequencer .trk-ctrl-dropdown__item--danger:hover {
  background: rgba(180, 74, 58, 0.08);
}

#page-sequencer .trk-ctrl-btn {
  min-width: 26px;
  height: 26px;
  padding: 0 6px;
  border-radius: var(--stg-r-pill, 9999px);
  background: transparent;
  border: none;
  cursor: pointer;
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 8px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--stg-ink-3, #6b6b5f);
  display: grid;
  place-items: center;
  transition: background 0.1s, color 0.1s;
}

#page-sequencer .trk-ctrl-btn:hover {
  background: var(--stg-paper-deep, #f3f2ee);
  color: var(--stg-ink, #161a14);
}

#page-sequencer .trk-ctrl-btn.is-mute {
  background: var(--stg-danger, #b44a3a);
  color: var(--stg-paper, #fff);
}

#page-sequencer .trk-ctrl-btn.is-solo {
  background: var(--stg-accent, #d9f274);
  color: var(--stg-ink, #161a14);
}

#page-sequencer .trk-ctrl-opt {
  font-size: 14px;
  line-height: 1;
  letter-spacing: 0;
  color: var(--stg-ink-3, #6b6b5f);
}

#page-sequencer .trk-ctrl-opt:hover,
#page-sequencer .trk-ctrl-opt[aria-expanded="true"] {
  background: var(--stg-paper-deep, #f3f2ee);
  color: var(--stg-ink, #161a14);
}

#page-sequencer [data-t="kick"] {
  --pad-on: #8db89a;
}

#page-sequencer [data-t="snare"] {
  --pad-on: #a3c4d1;
}

#page-sequencer [data-t="hihat"] {
  --pad-on: #d4c4a8;
}

#page-sequencer [data-t="808"] {
  --pad-on: #d4b8a0;
}

#page-sequencer [data-t="perc"] {
  --pad-on: #a8c4b8;
}

#page-sequencer [data-t="clap"] {
  --pad-on: #c9b5d4;
}

#page-sequencer [data-t="rim"] {
  --pad-on: #b8c8d8;
}

#page-sequencer .seq-add,
#page-sequencer .add-track-section {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed rgba(22, 26, 20, 0.1);
}

#page-sequencer .seq-add__lab,
#page-sequencer .add-track-section label {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--stg-ink-4, #a6a59b);
  margin: 0;
}

#page-sequencer .seq-add__pill,
#page-sequencer .add-track-dropdown {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--stg-paper, #fff);
  border: none;
  cursor: pointer;
  border-radius: var(--stg-r-pill, 9999px);
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 500;
  color: var(--stg-ink, #161a14);
  font-family: var(--font-ui, "Inter Tight", sans-serif);
}

#page-sequencer .seq-add__circle,
#page-sequencer .add-track-btn {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--stg-paper, #fff);
  color: var(--stg-ink-2, #38382f);
  border: none;
  cursor: pointer;
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-size: 18px;
  line-height: 1;
  display: grid;
  place-items: center;
  padding: 0;
}

#page-sequencer .seq-add__circle:hover,
#page-sequencer .add-track-btn:hover {
  background: var(--stg-ink, #161a14);
  color: var(--stg-paper, #fff);
}

@media (max-width: 680px) {
  #page-sequencer #quickSequencerRoot.seq-block {
    padding: 14px;
    border-radius: var(--stg-r-lg, 24px);
  }

  #page-sequencer .seq-ruler,
  #page-sequencer .seq-trk {
    grid-template-columns: 56px 1fr 0;
    column-gap: 6px;
  }

  #page-sequencer .seq-ruler__ctrl-sp,
  #page-sequencer .trk-side {
    display: none;
  }

  #page-sequencer .seq-ruler__nums,
  #page-sequencer .trk-pads {
    gap: 4px;
  }

  #page-sequencer .beat-nums,
  #page-sequencer .beat-group {
    gap: 2px;
  }
}

/* ── S4 · Remake hero (STG-UI-005 ref-track) ─────────────────────────── */
#page-sequencer .remake-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: var(--sp-5, 24px);
  align-items: stretch;
  background: var(--stg-paper-deep, #f3f2ee);
  border: none;
  border-radius: var(--stg-r-xl, 32px);
  margin-bottom: var(--sp-5, 24px);
  padding: var(--sp-5, 24px);
  overflow: hidden;
}

#page-sequencer .remake-hero__media {
  min-width: 0;
}

#page-sequencer .remake-hero__iframe-wrap {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  margin: 0;
  border-radius: var(--stg-r-lg, 24px);
  background: var(--stg-paper-2, #fafaf7);
  overflow: hidden;
}

#page-sequencer .remake-hero__iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

#page-sequencer .remake-hero__info {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: var(--sp-2, 8px);
  min-width: 0;
  padding: var(--sp-4, 16px) 0 0;
}

#page-sequencer .remake-hero__eyebrow {
  margin: 0;
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--stg-ink-3, #6b6b5f);
}

#page-sequencer .remake-hero__badge {
  align-self: flex-start;
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--stg-ink, #161a14);
  background: var(--stg-pop-cream, #f4ecd8);
  border: none;
  border-radius: var(--stg-r-pill, 9999px);
  padding: 4px 10px;
}

#page-sequencer .remake-hero__title {
  margin: 0;
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-size: clamp(1.35rem, 2.8vw, 2rem);
  font-weight: 400;
  font-style: italic;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--stg-ink, #161a14);
}

#page-sequencer .remake-hero__artist {
  margin: var(--sp-2, 8px) 0 var(--sp-2, 8px);
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: var(--fs-body, 1rem);
  color: var(--stg-ink-2, #38382f);
}

#page-sequencer .remake-hero__meta-grid {
  margin: var(--sp-2, 8px) 0 0;
  padding: var(--sp-3, 12px) 0 0;
  border-top: 1px solid var(--stg-border, rgba(22, 26, 20, 0.08));
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 6px var(--sp-4, 16px);
  align-items: baseline;
}

#page-sequencer .remake-hero__meta-item {
  display: contents;
}

#page-sequencer .remake-hero__meta-item dt {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--stg-ink-3, #6b6b5f);
  margin: 0;
}

#page-sequencer .remake-hero__meta-item dd {
  margin: 0;
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: var(--fs-small, 0.875rem);
  color: var(--stg-ink-2, #38382f);
  line-height: 1.35;
}

@media (max-width: 860px) {
  #page-sequencer .remake-hero {
    grid-template-columns: 1fr;
    padding: var(--sp-4, 16px);
  }

  #page-sequencer .remake-hero__info {
    padding-top: 0;
  }
}

/* ── S3 · Advanced (.drumseq-app) ────────────────────────────────────── */
#page-sequencer .drumseq-app {
  --ds-text-on-brown: var(--stg-ink, #161a14);
  --ds-text-on-brown-dim: var(--stg-ink-2, #38382f);
  --ds-text-on-brown-muted: var(--stg-ink-3, #6b6b5f);
  --ds-gold: var(--stg-accent, #d9f274);
  --ds-gold-light: var(--stg-accent, #d9f274);
  --ds-brown-900: var(--stg-paper-deep, #f3f2ee);
  --ds-brown-800: var(--stg-paper, #ffffff);
  --ds-brown-700: var(--stg-paper-2, #fafaf7);
  --ds-brown-600: var(--stg-paper-deep, #f3f2ee);
  --ds-grid-row-light: var(--stg-paper, #ffffff);
  --ds-grid-row-dark: var(--stg-paper-2, #fafaf7);
  border: none;
  border-radius: var(--stg-r-xl, 32px);
  background: var(--stg-paper-deep, #f3f2ee);
  box-shadow: var(--stg-lift);
}

/* ── S3a · Advanced toolbar only (STG-UI-011-gemini advanced-32) ─────── */
#page-sequencer .drumseq-app .ds-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 52px;
  min-height: 52px;
  padding: 0 16px;
  background: var(--stg-paper, #fff);
  border-bottom: 1px solid rgba(22, 26, 20, 0.08);
  box-shadow: none;
}

#page-sequencer .drumseq-app .ds-toolbar-section {
  display: flex;
  align-items: center;
  gap: 8px;
  border: none;
  padding: 0;
  margin: 0;
}

#page-sequencer .drumseq-app .ds-toolbar-left {
  flex-shrink: 0;
}

#page-sequencer .drumseq-app .ds-toolbar-center {
  flex: 1;
  min-width: 0;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  row-gap: 6px;
}

#page-sequencer .drumseq-app .ds-toolbar-center .ds-control-group + .ds-control-group {
  padding: 0;
  margin: 0;
  border: none;
}

#page-sequencer .drumseq-app .ds-toolbar-right {
  flex-shrink: 0;
}

#page-sequencer .drumseq-app .ds-toolbar-right .ds-control-group + .ds-control-group {
  padding: 0;
  margin: 0;
  border: none;
}

#page-sequencer .drumseq-app .ds-toolbar-divider {
  width: 1px;
  height: 20px;
  flex-shrink: 0;
  background: rgba(22, 26, 20, 0.08);
}

#page-sequencer .drumseq-app .ds-tb-title,
#page-sequencer .drumseq-app .ds-title {
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-size: 13px;
  font-weight: 500;
  font-style: italic;
  letter-spacing: -0.01em;
  color: var(--stg-ink-3, #6b6b5f);
  text-shadow: none;
  line-height: 1.2;
  white-space: nowrap;
}

#page-sequencer .drumseq-app .ds-title-accent {
  color: inherit;
  font-style: italic;
}

#page-sequencer .drumseq-app .ds-toolbar .ds-control-group {
  display: flex;
  align-items: center;
  gap: 5px;
}

#page-sequencer .drumseq-app .ds-toolbar .ds-control-label {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--stg-ink-4, #a6a59b);
  opacity: 1;
}

#page-sequencer .drumseq-app .ds-toolbar .ds-control-select {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 11px;
  font-weight: 500;
  color: var(--stg-ink, #161a14);
  background: var(--stg-paper-deep, #f3f2ee);
  border: 1px solid rgba(22, 26, 20, 0.1);
  border-radius: var(--stg-r-sm, 8px);
  padding: 4px 8px;
  min-width: 56px;
  max-width: min(100%, 92px);
  cursor: pointer;
  outline: none;
  transition: border-color 0.12s;
}

#page-sequencer .drumseq-app .ds-toolbar .ds-control-select:hover {
  border-color: rgba(22, 26, 20, 0.2);
}

#page-sequencer .drumseq-app .ds-toolbar .ds-control-select:focus {
  border-color: rgba(22, 26, 20, 0.3);
  box-shadow: none;
}

#page-sequencer .drumseq-app .ds-toolbar .ds-control-select option,
#page-sequencer .drumseq-app .ds-toolbar .ds-control-select optgroup {
  background: var(--stg-paper, #fff);
  color: var(--stg-ink, #161a14);
}

#page-sequencer .drumseq-app .ds-toolbar .ds-toggle-group {
  display: inline-flex;
  align-items: center;
  background: var(--stg-paper-deep, #f3f2ee);
  border-radius: var(--stg-r-pill, 9999px);
  padding: 2px;
  border: none;
  overflow: visible;
}

#page-sequencer .drumseq-app .ds-toolbar .ds-toggle-btn {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
  color: var(--stg-ink-3, #6b6b5f);
  background: transparent;
  border: none;
  border-radius: var(--stg-r-pill, 9999px);
  padding: 4px 10px;
  min-height: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: background 0.12s, color 0.12s;
}

#page-sequencer .drumseq-app .ds-toolbar .ds-toggle-btn:not(:last-child) {
  border-right: none;
}

#page-sequencer .drumseq-app .ds-toolbar .ds-toggle-btn:hover {
  color: var(--stg-ink, #161a14);
  background: transparent;
}

#page-sequencer .drumseq-app .ds-toolbar .ds-toggle-btn.active {
  background: var(--stg-ink, #161a14);
  color: var(--stg-paper, #fff);
  font-weight: 500;
}

#page-sequencer .drumseq-app .ds-toolbar .ds-toggle-btn svg {
  display: block;
  flex-shrink: 0;
}

#page-sequencer .drumseq-app .ds-toolbar .ds-bars-control,
#page-sequencer .drumseq-app .ds-toolbar .ds-zoom-controls,
#page-sequencer .drumseq-app .ds-toolbar .ds-stepper {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--stg-paper-deep, #f3f2ee);
  border-radius: var(--stg-r-pill, 9999px);
  padding: 2px 4px;
}

#page-sequencer .drumseq-app .ds-toolbar .ds-sm-btn {
  width: 22px;
  height: 22px;
  min-width: 22px;
  min-height: 22px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--stg-ink-2, #38382f);
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 0.1s;
}

#page-sequencer .drumseq-app .ds-toolbar .ds-sm-btn:hover {
  background: var(--stg-paper, #fff);
  color: var(--stg-ink, #161a14);
  border: none;
}

#page-sequencer .drumseq-app .ds-toolbar .ds-sm-btn:active {
  transform: scale(0.94);
}

#page-sequencer .drumseq-app .ds-toolbar .ds-sm-btn:disabled {
  opacity: 1;
  color: var(--stg-ink-4, #a6a59b);
  cursor: default;
  background: transparent;
  border: none;
}

#page-sequencer .drumseq-app .ds-toolbar .ds-sm-btn:disabled:hover {
  background: transparent;
  color: var(--stg-ink-4, #a6a59b);
}

#page-sequencer .drumseq-app .ds-toolbar .ds-bars-value,
#page-sequencer .drumseq-app .ds-toolbar .ds-zoom-value,
#page-sequencer .drumseq-app .ds-toolbar .ds-val {
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 12px;
  font-weight: 500;
  color: var(--stg-ink, #161a14);
  min-width: 28px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

@media (max-width: 1100px) {
  #page-sequencer .drumseq-app .ds-toolbar .ds-control-label {
    display: inline;
  }
}

@media (max-width: 900px) {
  #page-sequencer .drumseq-app .ds-toolbar {
    height: auto;
    min-height: 52px;
    padding-top: 8px;
    padding-bottom: 8px;
    flex-wrap: wrap;
  }

  #page-sequencer .drumseq-app .ds-toolbar-divider {
    display: none;
  }

  #page-sequencer .drumseq-app .ds-toolbar-center {
    order: 3;
    flex-basis: 100%;
    justify-content: flex-start;
  }
}

/* ── S3b · Advanced body — track panel, canvas area, status (STG-UI-011) ─ */
#page-sequencer .drumseq-app {
  --ds-panel-w: 240px;
  --ds-timeline-h: 28px;
  --ds-track-h: 40px;
  --ds-status-h: 26px;
}

#page-sequencer .drumseq-app .ds-sequencer-body {
  background: var(--stg-paper, #fff);
  min-height: 280px;
}

/* Track panel */
#page-sequencer .drumseq-app .ds-track-panel {
  width: var(--ds-panel-w);
  min-width: var(--ds-panel-w);
  background: var(--stg-paper-deep, #f3f2ee);
  border-right: 1px solid rgba(22, 26, 20, 0.08);
}

#page-sequencer .drumseq-app .ds-timeline-corner {
  height: var(--ds-timeline-h);
  min-height: var(--ds-timeline-h);
  background: var(--stg-paper, #fff);
  border-bottom: 1px solid rgba(22, 26, 20, 0.08);
}

#page-sequencer .drumseq-app .ds-corner-label {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--stg-ink-4, #a6a59b);
}

#page-sequencer .drumseq-app .ds-track-list {
  flex: 1;
  overflow-y: auto;
}

#page-sequencer .drumseq-app .ds-track-row {
  height: var(--ds-track-h);
  padding: 0 8px 0 0;
  gap: 5px;
  border-bottom: 1px solid rgba(22, 26, 20, 0.04);
  transition: background 0.1s;
}

#page-sequencer .drumseq-app .ds-track-row:nth-child(even) {
  background: rgba(22, 26, 20, 0.03);
}

#page-sequencer .drumseq-app .ds-track-row:hover {
  background: rgba(255, 255, 255, 0.75);
}

#page-sequencer .drumseq-app .ds-track-row.is-muted .ds-track-name {
  color: var(--stg-ink-4, #a6a59b);
}

#page-sequencer .drumseq-app .ds-track-row.is-solo-dim {
  opacity: 0.35;
}

#page-sequencer .drumseq-app .ds-track-row.is-muted:not(.is-solo-dim) {
  opacity: 0.55;
}

#page-sequencer .drumseq-app .ds-track-color-bar {
  width: 4px;
  align-self: stretch;
  height: auto;
  border-radius: 0;
  flex-shrink: 0;
}

#page-sequencer .drumseq-app .ds-track-name {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--stg-ink-2, #38382f);
}

#page-sequencer .drumseq-app .ds-track-name.editing {
  background: var(--stg-paper, #fff);
  border: 1px solid rgba(22, 26, 20, 0.2);
  border-radius: var(--stg-r-sm, 8px);
  padding: 2px 6px;
  color: var(--stg-ink, #161a14);
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 10px;
  letter-spacing: 0;
  text-transform: none;
}

#page-sequencer .drumseq-app .ds-track-btns {
  gap: 2px;
  opacity: 0;
  transition: opacity 0.1s;
}

#page-sequencer .drumseq-app .ds-track-row:hover .ds-track-btns,
#page-sequencer .drumseq-app .ds-track-row:focus-within .ds-track-btns {
  opacity: 1;
}

#page-sequencer .drumseq-app .ds-track-btn {
  width: 20px;
  height: 20px;
  min-width: 20px;
  border: none;
  border-radius: var(--stg-r-pill, 9999px);
  background: transparent;
  color: var(--stg-ink-4, #a6a59b);
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0;
}

#page-sequencer .drumseq-app .ds-track-btn:hover {
  background: rgba(22, 26, 20, 0.08);
  color: var(--stg-ink, #161a14);
  border: none;
}

#page-sequencer .drumseq-app .ds-track-btn.mute-active {
  background: var(--stg-danger, #b44a3a);
  color: var(--stg-paper, #fff);
  border: none;
}

#page-sequencer .drumseq-app .ds-track-btn.solo-active {
  background: var(--stg-accent, #d9f274);
  color: var(--stg-ink, #161a14);
  border: none;
}

#page-sequencer .drumseq-app .ds-track-edit-btn {
  min-width: 34px;
  width: auto;
  padding: 0 5px;
  font-size: 7px;
  letter-spacing: 0.04em;
}

#page-sequencer .drumseq-app .ds-track-delete-btn {
  font-size: 13px;
  font-weight: 600;
  color: var(--stg-ink-4, #a6a59b);
}

#page-sequencer .drumseq-app .ds-track-delete-btn:hover {
  background: rgba(180, 74, 58, 0.12);
  color: var(--stg-danger, #b44a3a);
  border: none;
}

#page-sequencer .drumseq-app .ds-track-add-row {
  padding: 8px;
  border-top: 1px solid rgba(22, 26, 20, 0.08);
  gap: 6px;
}

#page-sequencer .drumseq-app .ds-add-track-select {
  background: var(--stg-paper, #fff);
  border: 1px solid rgba(22, 26, 20, 0.1);
  border-radius: var(--stg-r-sm, 8px);
  color: var(--stg-ink, #161a14);
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 11px;
  font-weight: 500;
  padding: 6px 8px;
}

#page-sequencer .drumseq-app .ds-add-track-select option {
  background: var(--stg-paper, #fff);
  color: var(--stg-ink, #161a14);
}

#page-sequencer .drumseq-app .ds-add-track-btn {
  padding: 7px 8px;
  background: transparent;
  border: 1.5px dashed rgba(22, 26, 20, 0.2);
  border-radius: var(--stg-r-sm, 8px);
  color: var(--stg-ink-4, #a6a59b);
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.03em;
}

#page-sequencer .drumseq-app .ds-add-track-btn:hover {
  border-color: rgba(22, 26, 20, 0.35);
  color: var(--stg-ink, #161a14);
  background: rgba(22, 26, 20, 0.03);
}

/* Grid area */
#page-sequencer .drumseq-app .ds-grid-area {
  background: var(--stg-paper, #fff);
}

#page-sequencer .drumseq-app .ds-timeline-canvas {
  border-bottom: 1px solid rgba(22, 26, 20, 0.1);
  background: var(--stg-paper, #fff);
}

#page-sequencer .drumseq-app .ds-grid-scroll::-webkit-scrollbar {
  height: 8px;
}

#page-sequencer .drumseq-app .ds-grid-scroll::-webkit-scrollbar-track {
  background: var(--stg-paper-deep, #f3f2ee);
}

#page-sequencer .drumseq-app .ds-grid-scroll::-webkit-scrollbar-thumb {
  background: rgba(22, 26, 20, 0.18);
  border-radius: 4px;
  border: 2px solid var(--stg-paper-deep, #f3f2ee);
}

#page-sequencer .drumseq-app .ds-grid-scroll::-webkit-scrollbar-thumb:hover {
  background: rgba(22, 26, 20, 0.28);
}

#page-sequencer .drumseq-app .ds-grid-canvas {
  background: var(--stg-paper, #fff);
}

/* Velocity popup */
#page-sequencer .drumseq-app .ds-velocity-popup {
  background: var(--stg-paper, #fff);
  border: 1px solid rgba(22, 26, 20, 0.12);
  border-radius: var(--stg-r-md, 16px);
  box-shadow: var(--stg-lift, 0 4px 24px rgba(22, 26, 20, 0.1));
}

#page-sequencer .drumseq-app .ds-vel-label {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--stg-ink-4, #a6a59b);
}

#page-sequencer .drumseq-app .ds-vel-slider {
  accent-color: var(--stg-ink, #161a14);
}

#page-sequencer .drumseq-app .ds-vel-value {
  color: var(--stg-ink, #161a14);
}

/* Status bar */
#page-sequencer .drumseq-app .ds-status-bar {
  height: var(--ds-status-h);
  min-height: var(--ds-status-h);
  background: var(--stg-paper, #fff);
  border-top: 1px solid rgba(22, 26, 20, 0.08);
  padding: 0 16px;
}

#page-sequencer .drumseq-app .ds-status-text {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 10px;
  font-weight: 500;
  color: var(--stg-ink-4, #a6a59b);
  letter-spacing: 0;
}

@media (max-width: 1100px) {
  #page-sequencer .drumseq-app {
    --ds-panel-w: 200px;
  }
}

@media (max-width: 900px) {
  #page-sequencer .drumseq-app {
    --ds-panel-w: 168px;
  }

  #page-sequencer .drumseq-app .ds-track-btns {
    opacity: 1;
  }

  #page-sequencer .drumseq-app .ds-track-edit-btn {
    min-width: 28px;
    padding: 0 3px;
    font-size: 6px;
  }
}

@media (max-width: 768px) {
  #page-sequencer.page {
    padding: var(--sp-4, 16px) var(--sp-4, 16px) var(--sp-7, 48px);
  }

  #page-sequencer .floating-header {
    flex-direction: column;
    align-items: stretch;
  }

  #page-sequencer .header-controls {
    justify-content: flex-start;
  }
}

/* ── S5 · Comments (STG-UI-005 .cmt-sec) ─────────────────────────────── */
#page-sequencer .sequencer-comments-separator {
  display: none;
}

#page-sequencer .sequencer-comments-panel.cmt-sec {
  max-width: none;
  width: 100%;
  margin: var(--sp-5, 24px) 0 var(--sp-7, 48px);
  padding: var(--sp-4, 16px) 0 0;
  background: transparent;
  border: none;
  border-top: 1px solid var(--stg-border, rgba(22, 26, 20, 0.08));
  border-radius: 0;
}

#page-sequencer .cmt-sec .head {
  display: flex;
  align-items: baseline;
  gap: var(--sp-2, 8px);
  margin-bottom: 4px;
}

#page-sequencer .cmt-sec .head h2,
#page-sequencer #sequencer-comments-title {
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--stg-ink, #161a14);
  text-transform: none;
  margin: 0;
}

#page-sequencer .cmt-sec .head .cnt,
#page-sequencer .sequencer-comments-count {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 11px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: var(--stg-r-pill, 9999px);
  background: var(--stg-paper-deep, #f3f2ee);
  color: var(--stg-ink-3, #6b6b5f);
  border: none;
  font-variant-numeric: tabular-nums;
}

#page-sequencer .cmt-sec .hint,
#page-sequencer .sequencer-comments-panel__hint {
  font-size: 13px;
  color: var(--stg-ink-3, #6b6b5f);
  margin: 0 0 var(--sp-4, 16px);
  opacity: 1;
}

#page-sequencer .pattern-comments-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 0;
  max-height: none;
  overflow: visible;
}

#page-sequencer .pattern-comment-row {
  background: var(--stg-paper-deep, #f3f2ee);
  border: none;
  border-radius: var(--stg-r-lg, 24px);
  padding: var(--sp-3, 12px);
  margin-bottom: 6px;
  box-shadow: none;
  color: var(--stg-ink, #161a14);
}

#page-sequencer .pattern-comment-row--hidden {
  opacity: 0.55;
}

#page-sequencer .pattern-comment-row__main {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: var(--sp-3, 12px);
  align-items: start;
}

#page-sequencer .pattern-comment-avatar {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-size: 13px;
  font-weight: 400;
  color: var(--stg-ink, #161a14);
  background: #a3c4d1;
  flex-shrink: 0;
}

#page-sequencer .pattern-comment-row:nth-child(3n + 1) .pattern-comment-avatar {
  background: #a3c4d1;
}

#page-sequencer .pattern-comment-row:nth-child(3n + 2) .pattern-comment-avatar {
  background: #d4c4a8;
}

#page-sequencer .pattern-comment-row:nth-child(3n) .pattern-comment-avatar {
  background: #8db89a;
}

#page-sequencer .pattern-comment-row--reply .pattern-comment-avatar {
  width: 28px;
  height: 28px;
  font-size: 12px;
}

#page-sequencer .pattern-comment-content {
  min-width: 0;
  font-size: 14px;
  line-height: 1.5;
}

#page-sequencer .pattern-comment-meta {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--sp-2, 8px);
  margin-bottom: 2px;
}

#page-sequencer .pattern-comment-author-link {
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-size: 15px;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--stg-ink, #161a14);
  text-decoration: none;
}

#page-sequencer .pattern-comment-author-link:hover {
  text-decoration: underline;
}

#page-sequencer .pattern-comment-time {
  font-size: 11px;
  color: var(--stg-ink-4, #a6a59b);
  font-weight: 400;
  letter-spacing: 0;
}

#page-sequencer .pattern-comment-body {
  margin: 0;
  max-width: 55ch;
  color: var(--stg-ink-2, #38382f);
  font-size: 14px;
  line-height: 1.5;
}

#page-sequencer .pattern-comment-body--system {
  color: var(--stg-ink-3, #6b6b5f);
  font-style: italic;
}

#page-sequencer .pattern-comment-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  margin-top: var(--sp-2, 8px);
}

#page-sequencer .pattern-comment-action,
#page-sequencer .pc-reaction-btn {
  border: none;
  background: transparent;
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 12px;
  font-weight: 500;
  color: var(--stg-ink-3, #6b6b5f);
  padding: 4px 8px;
  border-radius: var(--stg-r-pill, 9999px);
  cursor: pointer;
}

#page-sequencer .pattern-comment-action:hover,
#page-sequencer .pc-reaction-btn:hover {
  background: var(--stg-paper, #ffffff);
  color: var(--stg-ink, #161a14);
}

#page-sequencer .pattern-comment-action--danger:hover {
  background: rgba(180, 74, 58, 0.12);
  color: var(--stg-danger, #b44a3a);
}

#page-sequencer .pc-reaction-btn.pc-reaction-active {
  background: var(--stg-paper, #ffffff);
  color: var(--stg-ink, #161a14);
}

#page-sequencer .pattern-comment-replies {
  grid-column: 1 / -1;
  margin: 0;
  padding: var(--sp-2, 8px) 0 0 var(--sp-4, 16px);
  border-left: 1px solid var(--stg-border, rgba(22, 26, 20, 0.08));
  display: flex;
  flex-direction: column;
  gap: 6px;
}

#page-sequencer .pattern-comment-row--reply {
  background: var(--stg-paper, #ffffff);
  box-shadow: inset 0 0 0 1px rgba(22, 26, 20, 0.05);
}

#page-sequencer .pattern-comments-loading {
  font-size: 13px;
  color: var(--stg-ink-3, #6b6b5f);
  margin: 0 0 var(--sp-3, 12px);
}

#page-sequencer .pc-inline-toggle-btn.tm-profile-btn {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 10px 16px;
  border-radius: var(--stg-r-pill, 9999px);
  border: none;
  background: var(--stg-paper-deep, #f3f2ee);
  color: var(--stg-ink, #161a14);
  margin-bottom: var(--sp-3, 12px);
  cursor: pointer;
}

#page-sequencer .pc-inline-toggle-btn.tm-profile-btn:hover {
  background: var(--stg-paper, #ffffff);
}

#page-sequencer .pattern-comments-composer {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: var(--sp-3, 12px);
  align-items: start;
  background: var(--stg-paper, #ffffff);
  border-radius: var(--stg-r-lg, 24px);
  padding: var(--sp-3, 12px);
  margin-bottom: var(--sp-3, 12px);
  box-shadow: inset 0 0 0 1px rgba(22, 26, 20, 0.06);
}

#page-sequencer .pattern-comments-composer--inline-reply {
  margin-left: var(--sp-4, 16px);
  background: var(--stg-paper-deep, #f3f2ee);
}

#page-sequencer .pattern-comments-composer__content {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2, 8px);
}

#page-sequencer .pattern-comments-textarea {
  width: 100%;
  min-height: 4.5rem;
  padding: 10px 12px;
  border: none;
  border-radius: var(--stg-r-md, 16px);
  background: var(--stg-paper-deep, #f3f2ee);
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 14px;
  color: var(--stg-ink, #161a14);
  resize: vertical;
}

#page-sequencer .pattern-comments-textarea:focus {
  outline: 2px solid var(--stg-ink, #161a14);
  outline-offset: -1px;
}

#page-sequencer .pc-composer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

#page-sequencer .pc-composer-actions .modal-btn.primary {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 12px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--stg-r-pill, 9999px);
  border: none;
  background: var(--stg-ink, #161a14);
  color: var(--stg-paper, #ffffff);
  cursor: pointer;
}

#page-sequencer .pc-composer-actions .modal-btn.primary:hover {
  opacity: 0.9;
}

/* ── STG-UI-012 Tutorial overlay ───────────────────────────────────────────── */

/* Tutorial overlay — pas de scrim plein écran ; panneau flottant + outline spotlight */
.modal-overlay.modal-overlay--tutorial {
  background: transparent;
  backdrop-filter: none;
  pointer-events: none;
  z-index: calc(var(--tm-modal-overlay-z, 1200) + 100);
  align-items: center;
}

.tutorial-panel {
  background: var(--stg-paper, #faf6ee);
  border: 1px solid rgba(22, 26, 20, 0.12);
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(22, 26, 20, 0.18);
  padding: 32px 32px 28px;
  width: 460px;
  max-width: calc(100vw - 32px);
  position: relative;
  z-index: 2;
  pointer-events: auto;
}

.tutorial-step-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.tutorial-step-num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--stg-pop-lime, #c8f53c);
  color: var(--stg-ink, #1a1408);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
}

.tutorial-step-of {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--stg-ink-muted, #6b6b5f);
}

.tutorial-title {
  font-family: var(--stg-font-display, "Fraunces", Georgia, serif);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--stg-ink, #1a1408);
  margin: 0 0 10px;
  line-height: 1.2;
}

.tutorial-body {
  font-size: 14px;
  color: var(--stg-ink-muted, #6b6b5f);
  line-height: 1.6;
  margin: 0 0 24px;
}

.tutorial-footer {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tutorial-dots {
  display: flex;
  gap: 6px;
  justify-content: center;
}

.tutorial-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(22, 26, 20, 0.15);
  display: inline-block;
  transition: background 0.2s;
}

.tutorial-dot.active {
  background: var(--stg-pop-lime, #c8f53c);
}

.tutorial-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.tutorial-next-btn {
  font-family: var(--font-ui, "Inter Tight", sans-serif);
  font-size: 14px;
  font-weight: 600;
  background: var(--stg-ink, #1a1408);
  color: var(--stg-paper, #faf6ee);
  border: none;
  border-radius: 10px;
  padding: 10px 20px;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}

.tutorial-next-btn:hover {
  background: #2c2c1a;
  transform: translateY(-1px);
}

.tutorial-next-btn:focus-visible {
  outline: 3px solid var(--stg-pop-lime, #c8f53c);
  outline-offset: 2px;
}

.tutorial-next-btn.is-last {
  background: var(--stg-pop-lime, #c8f53c);
  color: var(--stg-ink, #1a1408);
}

.tutorial-next-btn.is-last:hover {
  background: #b8e02a;
}

.tutorial-next-btn.is-last:focus-visible {
  outline-color: var(--stg-ink, #1a1408);
}

.tutorial-skip-btn {
  font-size: 13px;
  color: rgba(22, 26, 20, 0.4);
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 0;
  text-decoration: none;
  transition: color 0.15s;
}

.tutorial-skip-btn:hover {
  color: var(--stg-ink-muted, #6b6b5f);
  text-decoration: underline;
}

/* Spotlight: outline only — no full-page dim (box-shadow scrim removed 2026-05-30) */
.tutorial-spotlight {
  position: relative;
  z-index: calc(var(--tm-modal-overlay-z, 1200) + 99);
  outline: 3px solid var(--stg-pop-lime, #c8f53c) !important;
  outline-offset: 4px;
  border-radius: 4px;
}


@media (max-width: 520px) {
  .tutorial-panel {
    width: calc(100vw - 32px);
    padding: 24px 22px 20px;
  }
  .tutorial-title { font-size: 19px; }
}