/* The song's placed patterns, in play order. Kept unlayered to match the
   workspace rail, without changing the source-pattern browser or editor. */
/* Legacy sidebar height:100vh includes the fixed app/status bars. Bound this
   column so its scrolling viewport and its visible center are the same. */
body > .daw-layout > .pattern-library-sidebar {
  box-sizing: border-box;
  min-height: 0;
  height: calc(100vh - var(--v6-app-bar-h, 44px) - var(--statusbar-h, 26px));
  height: calc(100dvh - var(--v6-app-bar-h, 44px) - var(--statusbar-h, 26px));
  max-height: calc(100dvh - var(--v6-app-bar-h, 44px) - var(--statusbar-h, 26px));
}
.v6-pattern-in-song:has(> .song-pattern-rail) {
  display: flex;
  flex: 1 1 auto;
  min-height: 0;
  padding: 0;
  overflow: hidden;
}
.song-pattern-rail {
  --spr-card: #202027;
  --spr-card-hover: #292832;
  --spr-well: #14141b;
  --spr-line: rgba(205, 203, 231, .14);
  --spr-ink: #f4f2fa;
  --spr-secondary: #b6b2c7;
  --spr-muted: #9690aa;
  --spr-accent: #b59aff;
  --spr-playing: #f8c86a;
  --spr-playing-wash: rgba(245, 180, 64, .10);
  --spr-focus: #c4b5fd;
  --spr-grid: rgba(211, 215, 242, .055);
  --spr-beat-grid: rgba(211, 215, 242, .16);
  --spr-note-mix: #ffffff;
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  color: var(--spr-ink);
  font-family: var(--font-sans, system-ui, sans-serif);
}

.song-pattern-rail[hidden],
.song-pattern-rail [hidden] { display: none !important; }

.song-pattern-rail__header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 4px 8px;
  flex: 0 0 auto;
  padding: 10px 11px 8px;
}
.song-pattern-rail__eyebrow {
  grid-column: 1;
  color: var(--spr-accent);
  font-size: 9px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: .13em;
}
.song-pattern-rail__heading {
  display: grid;
  gap: 3px;
  min-width: 0;
}
.song-pattern-rail__summary {
  grid-column: 1;
  min-width: 0;
  overflow: hidden;
  color: var(--spr-ink);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.4;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.song-pattern-rail__follow {
  grid-column: 2;
  grid-row: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-height: 30px;
  padding: 5px 8px;
  border: 1px solid var(--spr-line);
  border-radius: 8px;
  background: var(--spr-card);
  color: var(--spr-secondary);
  font: inherit;
  font-size: 10px;
  font-weight: 650;
  line-height: 1.3;
  white-space: nowrap;
  cursor: pointer;
}
.song-pattern-rail__follow::before {
  content: '';
  width: 5px;
  height: 5px;
  flex: 0 0 auto;
  border: 1px solid currentColor;
  border-radius: 50%;
}
.song-pattern-rail__follow[aria-pressed="true"] {
  color: var(--spr-accent);
  border-color: color-mix(in srgb, var(--spr-accent) 34%, transparent);
  background: color-mix(in srgb, var(--spr-accent) 9%, var(--spr-card));
}
.song-pattern-rail__follow[aria-pressed="true"]::before { background: currentColor; }
.song-pattern-rail__status {
  min-height: 25px;
  flex: 0 0 auto;
  margin: 0 9px 0;
  padding: 0 3px 7px;
  overflow: hidden;
  border-bottom: 1px solid var(--spr-line);
  color: var(--spr-secondary);
  font-size: 10px;
  line-height: 1.5;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.song-pattern-rail__list {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  padding: 0 8px;
  overscroll-behavior-y: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--spr-line) transparent;
  scrollbar-gutter: stable;
  overflow-anchor: none;
}
.song-pattern-rail__list::-webkit-scrollbar { width: 5px; }
.song-pattern-rail__list::-webkit-scrollbar-track { background: transparent; }
.song-pattern-rail__list::-webkit-scrollbar-thumb {
  background: var(--spr-line);
  border-radius: 5px;
}
.song-pattern-rail__items { min-width: 0; }
.song-pattern-rail__spacer { pointer-events: none; }
.song-pattern-rail__empty {
  display: grid;
  justify-items: start;
  gap: 9px;
  margin: 16px 2px;
  padding: 16px 12px;
  border: 1px dashed var(--spr-line);
  border-radius: 9px;
  color: var(--spr-secondary);
  font-size: 12px;
  line-height: 1.5;
}
.song-pattern-rail__empty strong { color: var(--spr-ink); }
.song-pattern-rail__empty button {
  min-height: 32px;
  padding: 5px 8px;
  border: 1px solid var(--spr-line);
  border-radius: 6px;
  background: var(--spr-card);
  color: var(--spr-accent);
  font: inherit;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}
.song-pattern-rail__section { margin: 0; }
.song-pattern-rail__section-title {
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 29px;
  margin: 0;
  padding: 6px 3px;
  color: var(--spr-secondary);
  font-size: 10px;
  font-weight: 650;
  line-height: 1.4;
}
.song-pattern-rail__section-number {
  color: var(--section-color, var(--spr-muted));
  font-size: 9px;
  font-variant-numeric: tabular-nums;
  font-weight: 800;
}
.song-pattern-rail__section-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.song-pattern-rail__section-bars {
  flex: 0 0 auto;
  margin-left: auto;
  color: var(--spr-muted);
  font-size: 9px;
  font-variant-numeric: tabular-nums;
  font-weight: 450;
}

.song-pattern-card {
  position: relative;
  min-width: 0;
  margin: 0 0 10px;
  overflow: hidden;
  border: 1px solid var(--spr-line);
  border-left: 3px solid var(--section-color, var(--spr-accent));
  border-radius: 9px;
  background: var(--spr-card);
  transition: border-color 140ms ease, background-color 140ms ease, box-shadow 140ms ease;
}
.song-pattern-card__open {
  display: block;
  width: 100%;
  min-width: 0;
  padding: 10px 8px 8px;
  border: 0;
  border-radius: 6px 6px 0 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.song-pattern-card__top {
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 17px;
}
.song-pattern-card__number {
  flex: 0 0 auto;
  color: var(--spr-muted);
  font-size: 9px;
  font-variant-numeric: tabular-nums;
  font-weight: 650;
}
.song-pattern-card__name {
  min-width: 0;
  flex: 1 1 auto;
  overflow: hidden;
  color: var(--spr-ink);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.4;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.song-pattern-card__playing-label {
  display: none;
  align-items: center;
  gap: 4px;
  flex: 0 0 auto;
  color: var(--spr-playing);
  font-size: 9px;
  font-weight: 750;
  line-height: 1.4;
}
.song-pattern-card__playing-label::before {
  content: '';
  width: 4px;
  height: 8px;
  border-left: 2px solid currentColor;
  border-right: 2px solid currentColor;
}
.song-pattern-card__meta {
  display: flex;
  justify-content: space-between;
  gap: 6px;
  margin-top: 2px;
  overflow: hidden;
  color: var(--spr-secondary);
  font-size: 9px;
  font-variant-numeric: tabular-nums;
  line-height: 1.5;
  white-space: nowrap;
}
.song-pattern-card__meta > * {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}
.song-pattern-card__editing-label { visibility: hidden; color: var(--spr-accent); }
.song-pattern-card.is-selected .song-pattern-card__editing-label { visibility: visible; }
.song-pattern-card__preview {
  --preview-label-width: 64px;
  display: block;
  width: 100%;
  margin-top: 8px;
  overflow: hidden;
  border: 1px solid var(--spr-line);
  border-radius: 6px;
  background: var(--spr-well);
}
.song-pattern-card__ruler,
.song-pattern-card__lane {
  position: relative;
  display: grid;
  grid-template-columns: var(--preview-label-width) minmax(0, 1fr);
  align-items: center;
  min-width: 0;
}
.song-pattern-card__ruler {
  min-height: 22px;
  color: var(--spr-secondary);
  border-bottom: 1px solid var(--spr-line);
  font-size: 10px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.song-pattern-card__ruler-label {
  padding-left: 7px;
  color: var(--spr-muted);
  font-size: 9px;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.song-pattern-card__beats {
  display: grid;
  grid-template-columns: repeat(var(--preview-beats), minmax(0, 1fr));
}
.song-pattern-card__beats > span { padding-left: 4px; }
.song-pattern-card__lane {
  height: 30px;
  border-bottom: 1px solid color-mix(in srgb, var(--spr-line) 60%, transparent);
}
.song-pattern-card__lane:last-child { border-bottom: 0; }
.song-pattern-card__lane:nth-child(odd) {
  background: color-mix(in srgb, var(--spr-ink) 3%, transparent);
}
.song-pattern-card__lane-name {
  display: flex;
  align-items: center;
  gap: 5px;
  min-width: 0;
  padding: 0 6px;
  color: var(--spr-ink);
  font-size: 11px;
  font-weight: 550;
  line-height: 1.4;
}
.song-pattern-card__lane-name > span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.song-pattern-card__lane-dot {
  flex: 0 0 auto;
  width: 3px;
  height: 12px;
  border-radius: 2px;
  background: var(--lane-color);
}
.song-pattern-card__lane-roll {
  position: relative;
  display: block;
  min-width: 0;
  height: 100%;
  overflow: hidden;
  border-left: 1px solid var(--spr-beat-grid);
  background-image:
    linear-gradient(to right, var(--spr-beat-grid) 1px, transparent 1px),
    linear-gradient(to right, var(--spr-grid) 1px, transparent 1px);
  background-size: calc(100% / var(--preview-beats)) 100%, calc(100% / var(--preview-steps)) 100%;
}
.song-pattern-card__lane-roll svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: hidden;
}
.song-pattern-card__note {
  fill: color-mix(in srgb, var(--lane-color) 78%, var(--spr-note-mix));
}
.song-pattern-card__lane[data-state="muted"] .song-pattern-card__note { opacity: .65; }
.song-pattern-card__lane[data-state="rest"] .song-pattern-card__note { opacity: .25; }
.song-pattern-card__lane-state {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--spr-secondary);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .02em;
  background: color-mix(in srgb, var(--spr-well) 60%, transparent);
}
.song-pattern-card__lane[data-state="muted"] .song-pattern-card__lane-name {
  align-self: start;
  padding-top: 2px;
}
.song-pattern-card__lane[data-state="muted"] > .song-pattern-card__lane-state {
  inset: auto auto 2px 14px;
  background: none;
  font-size: 8px;
  line-height: 1.2;
}
.song-pattern-card__lane-roll::after {
  content: '';
  display: none;
  position: absolute;
  inset: 0 auto 0 calc(var(--pattern-progress, 0) * 100%);
  width: 2px;
  background: var(--spr-playing);
  box-shadow: 0 0 7px color-mix(in srgb, var(--spr-playing) 40%, transparent);
  pointer-events: none;
}
.song-pattern-card.is-playing .song-pattern-card__lane-roll::after { display: block; }
.song-pattern-card__no-notes {
  display: block;
  padding: 20px 10px;
  color: var(--spr-secondary);
  font-size: 11px;
  text-align: center;
}
.song-pattern-card__actions {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 6px 8px;
}
.song-pattern-card__seek,
.song-pattern-card__edit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 4px 6px;
  border: 1px solid transparent;
  border-radius: 5px;
  background: transparent;
  color: var(--spr-secondary);
  font: inherit;
  font-size: 11px;
  font-weight: 550;
  line-height: 1.4;
  cursor: pointer;
}
.song-pattern-card__seek { margin-right: auto; }
.song-pattern-card__edit {
  border-color: var(--spr-line);
  background: color-mix(in srgb, var(--spr-ink) 3%, transparent);
}
.song-pattern-card__progress {
  position: absolute;
  inset: auto 0 0;
  height: 2px;
  background: var(--spr-playing);
  opacity: 0;
  transform: scaleX(var(--progress, 0));
  transform-origin: left center;
  pointer-events: none;
}

.song-pattern-card.is-selected {
  border-color: var(--spr-accent);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--spr-accent) 20%, transparent);
}
.song-pattern-card.is-playing {
  border-color: var(--spr-playing);
  background: linear-gradient(110deg, var(--spr-playing-wash), transparent 80%), var(--spr-card);
  box-shadow: 0 3px 16px rgba(0, 0, 0, .15);
}
.song-pattern-card.is-playing.is-selected {
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--spr-accent) 65%, transparent);
}
.song-pattern-card.is-playing .song-pattern-card__playing-label { display: inline-flex; }
.song-pattern-card.is-playing .song-pattern-card__progress { opacity: 1; }
.song-pattern-card.is-past:not(.is-playing):not(.is-selected) .song-pattern-card__number {
  color: var(--spr-secondary);
}
.song-pattern-rail button:disabled { opacity: .5; cursor: default; }
.song-pattern-rail button:focus-visible,
.song-pattern-rail__list:focus-visible {
  outline: 2px solid var(--spr-focus);
  outline-offset: -2px;
}
@media (hover: hover) {
  .song-pattern-card:hover { background-color: var(--spr-card-hover); }
  .song-pattern-card__seek:hover:not(:disabled),
  .song-pattern-card__edit:hover:not(:disabled),
  .song-pattern-rail__follow:hover:not(:disabled) {
    color: var(--spr-ink);
    background-color: color-mix(in srgb, var(--spr-accent) 12%, var(--spr-card));
  }
}

body[data-theme="light"] .song-pattern-rail {
  --spr-card: #ffffff;
  --spr-card-hover: #f8f7fc;
  --spr-well: #edf1f6;
  --spr-line: rgba(40, 44, 71, .17);
  --spr-ink: #202235;
  --spr-secondary: #565e73;
  --spr-muted: #697086;
  --spr-accent: #7143b8;
  --spr-playing: #98600b;
  --spr-playing-wash: rgba(245, 180, 64, .16);
  --spr-focus: #7143b8;
  --spr-grid: rgba(40, 44, 71, .055);
  --spr-beat-grid: rgba(40, 44, 71, .18);
  --spr-note-mix: #1f2440;
}

/* The visibility controller uses .open and .collapsed on every viewport.
   On a phone the rail is an intentional drawer, below the persistent bar. */
@media (max-width: 768px) {
  body > .daw-layout > .pattern-library-sidebar {
    position: fixed;
    top: var(--v6-app-bar-h, 44px);
    bottom: var(--statusbar-h, 26px);
    left: 0;
    width: min(288px, calc(100vw - 48px));
    height: auto;
    z-index: 100;
    box-shadow: 10px 0 32px rgba(0, 0, 0, .24);
  }
  body > .daw-layout > .pattern-library-sidebar.open { transform: translateX(0); }
}
@media (pointer: coarse) {
  .song-pattern-rail__follow { min-height: 36px; }
  .song-pattern-card__seek,
  .song-pattern-card__edit { min-height: 36px; }
}
@media (prefers-reduced-motion: reduce) {
  .song-pattern-card { transition: none; }
  .song-pattern-rail__list { scroll-behavior: auto; }
}
.v6-pattern-pane-toolbar[hidden] { display: none !important; }