/* Compose · Percussion · the two-circle sequencer (perc-seq-face.js; design: compose/B-percussion/programmable).
   An instrument face (FACE.md): the mover (--ae-walk) is every hit and the needle; the place (--ae-land) is the kit's
   standing levels and the loudness diamonds; amber (--face-sel) is the chosen track and hit, only; a hit's sound
   family (D-22: --hit-drum, --hit-snare, --hit-metal) tints hairlines and tabs, never a pin. Dashed = could have
   sounded and didn't (FACE §2a). House tokens and mixes only (no raw hex). */
.fp-percseq {
  --pp-zoom-ground: color-mix(in srgb, var(--display) 70%, black);
  --pp-hatch: color-mix(in srgb, var(--text3) 38%, transparent);
  --pp-row-hover: color-mix(in srgb, var(--text) 6%, transparent);
  --pp-row-sel: color-mix(in srgb, var(--accent) 8%, transparent);
}
.fp-percseq .fh-h1 .w, .fp-percseq .fh-h1 .l { font-weight: 500; }
.fp-percseq .fh-h1 .l { color: var(--text); }
.fp-percseq .ps-tog { display: inline-flex; gap: 16px; flex-wrap: wrap; }
.fp-percseq .ps-tog .gsw { --g: var(--ae-walk); font-size: 13px; color: var(--text2); }
/* the stage: the big circle (focal) beside the loop and the kit */
.fp-percseq .pp-stage { display: grid; grid-template-columns: var(--bigw, 460px) minmax(0, 1fr); gap: 8px 36px; padding: 10px 28px 8px; }   /* its foot is the key row (D-64) */
.fp-percseq .pp-col { min-width: 0; }
.fp-percseq .pp-col h2, .fp-percseq .pp-side h2 { margin: 0; }   /* the picture title: face.css (D-63) */
.fp-percseq .pp-colhead { display: flex; align-items: center; justify-content: space-between; gap: 6px 14px; min-height: 30px; }
.fp-percseq .pp-colhead h2 { flex: none; }
.fp-percseq .pp-sellab { min-width: 0; display: flex; justify-content: flex-end; }
.fp-percseq .pp-seltext { min-width: 0; overflow: hidden; white-space: nowrap; }
.fp-percseq .pp-fact { margin: 3px 0 0; font-size: 12.5px; line-height: 1.45; color: var(--face-quiet); }
.fp-percseq .pp-fact b { font-weight: 500; color: var(--text2); font-family: var(--mono); font-variant-numeric: tabular-nums; }
.fp-percseq .pp-fact b.nm { font-family: var(--font); }
.fp-percseq .pp-sel { display: inline-flex; min-width: 0; align-items: center; gap: 8px; min-height: 28px; padding: 1px 4px 1px 10px; border-radius: 14px; font-size: 12.5px; color: var(--text); border: 1px solid var(--face-sel-60); background: color-mix(in srgb, var(--accent) 6%, transparent); max-width: 100%; }
.fp-percseq .pp-sel .mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.fp-percseq .pp-sel.none { border-color: var(--border2); color: var(--face-quiet); background: none; padding-right: 10px; }
.fp-percseq .pp-x { font: inherit; font-size: 15px; line-height: 1; color: var(--text2); background: var(--face-seg); border: 1px solid var(--border2); border-radius: 50%; width: 22px; height: 22px; padding: 0; cursor: pointer; position: relative; flex: none; }
.fp-percseq .pp-x::before { content: ""; position: absolute; inset: -11px; }   /* a 44 px target */
.fp-percseq .pp-x:hover { color: var(--text); }
.fp-percseq .pp-x:focus-visible { outline: 2px solid var(--face-sel); outline-offset: 2px; }
.fp-percseq .pp-big { position: relative; margin-top: 4px; }
/* touch: a vertical swipe on a circle scrolls the page (BAR lesson 1, D-10); taps act, nothing drags */
.fp-percseq .pp-big svg, .fp-percseq .pp-zoom svg { display: block; touch-action: pan-y; user-select: none; -webkit-user-select: none; outline: none; }
.fp-percseq .pp-big svg:focus-visible, .fp-percseq .pp-zoom svg:focus-visible { outline: 2px solid var(--face-sel); outline-offset: -2px; border-radius: 50%; }
.fp-percseq .pp-big svg text, .fp-percseq .pp-zoom svg text { font-family: var(--font); }
.fp-percseq .pp svg .mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.fp-percseq .deck.pp-hitdeck { background: none; border-top: 1px solid var(--face-deck-edge); padding: 12px 0 0; margin-top: 8px; }
.fp-percseq .pp-hitdeck[hidden] { display: none; }
.fp-percseq .pp-hitdeck .deck-foot { display: none; }   /* the deck under the page carries the key hint */
.fp-percseq .pp-side { display: grid; grid-template-columns: var(--loopw, 340px) minmax(0, 1fr); column-gap: 28px; align-content: start; min-width: 0; }
.fp-percseq .pp-loophead { display: flex; align-items: center; justify-content: space-between; gap: 10px; min-height: 30px; }
.fp-percseq .pp-loopctl { display: inline-flex; align-items: center; gap: 16px; }
.fp-percseq .pp-loopctl .gsw { --g: var(--ae-walk); font-size: 12.5px; color: var(--text2); }
.fp-percseq .pp-loopctl .gsw[aria-checked="false"] { color: var(--face-quiet); }
.fp-percseq .pp-loophead .fh-seg button { position: relative; min-width: 0; }
.fp-percseq .pp-fact .stack { display: grid; }
.fp-percseq .pp-zoomhead .pp-fact { min-height: calc(3 * 1.45em); }
.fp-percseq .pp-fact .stack > span { grid-area: 1 / 1; }
.fp-percseq .pp-fact .stack .ghost { visibility: hidden; }
.fp-percseq .pp-fact .gl-pin { display: inline-block; vertical-align: -1px; margin-right: 2px; }
.fp-percseq .pp-col > .pp-kit { margin-top: 18px; }
.fp-percseq .pp-zoomcol { min-width: 0; }
.fp-percseq .pp-zoom { position: relative; margin: 10px 0 0; }
.fp-percseq .pp-kit { min-width: 0; }
.fp-percseq .pp-kithead { margin-bottom: 8px; }
.fp-percseq .pp-rows { display: flex; flex-direction: column; gap: 2px; }
.fp-percseq .pp-row { position: relative; display: grid; grid-template-columns: 3px minmax(0, 1fr) 112px 30px; align-items: center; column-gap: 10px; min-height: 46px; padding: 4px 6px 4px 0; border-radius: 6px; cursor: pointer; }
.fp-percseq .pp-row:hover { background: var(--pp-row-hover); }
.fp-percseq .pp-row[aria-current="true"] { background: var(--pp-row-sel); }

.fp-percseq .pp-row .fam-tab { width: 3px; align-self: stretch; border-radius: 2px; background: var(--fam); margin: 6px 0; }
.fp-percseq .pp-row[aria-current="true"] .fam-tab { background: var(--face-sel); }
.fp-percseq .pp-rowtext { min-width: 0; display: block; text-align: left; font: inherit; color: inherit; background: none; border: 0; padding: 4px 0; cursor: pointer; }
.fp-percseq .pp-rowtext:focus-visible { outline: 2px solid var(--face-sel); outline-offset: 2px; border-radius: 4px; }
.fp-percseq .pp-row .nm, .fp-percseq .pp-row .rl { display: block; }
.fp-percseq .pp-sel .nw { white-space: nowrap; }
.fp-percseq .pp-row .nm { font-size: 13.5px; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.fp-percseq .pp-row .rl .ck { white-space: nowrap; }
.fp-percseq .pp-row .rl { font-size: 12px; line-height: 1.35; color: var(--face-quiet); margin-top: 1px; }
.fp-percseq .pp-row.muted .nm, .fp-percseq .pp-row.muted .rl { color: var(--face-quiet); }
/* the level shelf: a warm shelf from the left wall, its dB at the tip */
.fp-percseq .pp-lvl { position: relative; height: 30px; cursor: ew-resize; touch-action: pan-y; }
.fp-percseq .pp-lvl .well { position: absolute; left: 0; right: 46px; top: 14px; height: 2px; border-radius: 1px; background: var(--face-base); }
.fp-percseq .pp-lvl .shelf { position: absolute; left: 0; top: 13px; height: 4px; border-radius: 2px; width: calc(var(--f) * (100% - 46px)); background: var(--ae-land-60); }
.fp-percseq .pp-lvl .kn { position: absolute; top: 8px; left: calc(var(--f) * (100% - 46px)); width: 10px; height: 14px; margin-left: -5px; border-radius: 4px; background: var(--ae-land); box-shadow: 0 0 0 2px var(--knob-ring); }
.fp-percseq .pp-lvl .db { position: absolute; right: 0; top: 8px; width: 42px; text-align: right; font: 11px/14px var(--mono); font-variant-numeric: tabular-nums; color: var(--face-quiet); }
.fp-percseq .pp-lvl:focus-visible { outline: 2px solid var(--face-sel); outline-offset: 2px; border-radius: 4px; }
.fp-percseq .pp-mute { width: 30px; height: 30px; border-radius: 50%; border: 1px solid var(--border2); background: none; color: var(--face-quiet); font: 600 11px var(--font); cursor: pointer; padding: 0; }
.fp-percseq .pp-mute[aria-pressed="true"] { color: var(--bg); background: var(--text2); border-color: var(--text2); }
.fp-percseq .pp-mute:focus-visible { outline: 2px solid var(--face-sel); outline-offset: 2px; }
.fp-percseq .pp-kitfoot { display: flex; flex-wrap: wrap; gap: 8px 10px; margin-top: 8px; }
.fp-percseq .fbtn:focus-visible { outline: 2px solid var(--face-sel); outline-offset: 3px; }
.fp-percseq .fbtn[aria-disabled="true"] { color: var(--face-quiet); cursor: default; }
.fp-percseq .pp-kitfoot #ps-rm { margin-left: auto; }
.fp-percseq .pp-hint { position: absolute; left: 50%; transform: translateX(-50%); bottom: 4px; max-width: calc(100% - 16px); padding: 6px 12px; border-radius: 14px; font-size: 12.5px; color: var(--text); background: var(--face-chip); border: 1px solid var(--border2); text-align: center; pointer-events: none; opacity: 0; transition: opacity 160ms ease; }
.fp-percseq .pp-hint.on { opacity: 1; }
/* the deck's three views (D-31: a zone drives the deck): the pattern, the sound, the feel */
.fp-percseq .pp-decktabs { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 14px; padding: 10px 24px 0; background: var(--face-deck); border-top: 1px solid var(--face-deck-edge); }
.fp-percseq .pp-decktabs + .pp-soundrow, .fp-percseq .pp-decktabs ~ .deck { border-top: 0; }
.fp-percseq .pp-decktabs .gl { font-size: 12px; color: var(--face-quiet); }
.fp-percseq .pp-decktabs .hint { margin-left: auto; font-size: 11.5px; color: var(--face-quiet); }
.fp-percseq .pp-decktabs .hint kbd { font: inherit; color: var(--text2); }
/* the Sound view's picker: the studio's own, with Hear */
.fp-percseq .pp-soundrow { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 14px; padding: 14px 24px 0; background: var(--face-deck); }
.fp-percseq .pp-soundrow[hidden] { display: none; }
.fp-percseq .pp-soundlab { font-size: 12px; color: var(--text2); }
.fp-percseq .pp-soundpick { min-width: 220px; max-width: 360px; flex: 1 1 260px; }
.fp-percseq .g-act { font: inherit; font-size: 12.5px; color: var(--text2); background: none; border: 0; padding: 0 2px; cursor: pointer; position: relative; }
.fp-percseq .g-act::before { content: ""; position: absolute; inset: -13px 0; }
.fp-percseq .g-act:hover { color: var(--text); }
.fp-percseq .g-act:focus-visible { outline: 2px solid var(--face-sel); outline-offset: 3px; border-radius: 4px; }
.fp-percseq .ctl .lab svg { color: var(--ae-walk-60); }   /* a Feel ruler's glyph: the same mark it moves in the loop */
/* the layouts (from the face's own width: perc-seq-face.js layout()) */
.fp-percseq .pp[data-layout="mid"] .pp-side, .fp-percseq .pp[data-layout="stack"] .pp-side { display: flex; flex-direction: column; gap: 14px; }
.fp-percseq .pp[data-layout="stack"] .pp-stage { grid-template-columns: 1fr; }
.fp-percseq .pp[data-layout="stack"] .pp-colhead { max-width: 560px; }
.fp-percseq .pp.compact .pp-stage { padding: 14px 16px 8px; }
.fp-percseq .pp.compact .pp-colhead { flex-wrap: wrap; }
.fp-percseq .pp.compact .pp-sellab { justify-content: flex-start; flex-basis: 100%; min-height: 50px; align-items: flex-start; }
.fp-percseq .pp.compact .pp-seltext { white-space: normal; }
.fp-percseq .pp.compact .pp-decktabs { padding: 12px 16px 0; }
.fp-percseq .pp.compact .pp-soundrow { padding: 12px 16px 0; }
.fp-percseq .pp.compact .pp-decktabs .hint { margin-left: 0; }
.fp-percseq .pp.compact .pp-row { grid-template-columns: 3px minmax(0, 1fr) 104px 44px; min-height: 52px; }
.fp-percseq .pp.compact .pp-mute { width: 44px; height: 44px; }
.fp-percseq .pp.compact .pp-lvl { height: 44px; }
.fp-percseq .pp.compact .pp-lvl .well { top: 21px; }
.fp-percseq .pp.compact .pp-lvl .shelf { top: 20px; }
.fp-percseq .pp.compact .pp-lvl .kn { top: 13px; width: 14px; height: 18px; margin-left: -7px; }
.fp-percseq .pp.compact .pp-lvl .db { top: 4px; }
.fp-percseq .pp.compact .fh-seg button { padding: 0 12px; }
@media (pointer: coarse) {
  .fp-percseq .fbtn { height: 44px; }
  .fp-percseq .pp-loophead .fh-seg button { height: 38px; }
  .fp-percseq .pp-loophead .fh-seg button::before { content: ""; position: absolute; inset: -3px 0; }   /* a 44 px target */
  .fp-percseq .pp-row { grid-template-columns: 3px minmax(0, 1fr) 104px 44px; min-height: 52px; }
  .fp-percseq .pp-mute { width: 44px; height: 44px; }
  .fp-percseq .pp-lvl { height: 44px; } .fp-percseq .pp-lvl .well { top: 21px; } .fp-percseq .pp-lvl .shelf { top: 20px; }
  .fp-percseq .pp-lvl .kn { top: 13px; width: 14px; height: 18px; margin-left: -7px; } .fp-percseq .pp-lvl .db { top: 4px; }
  .fp-percseq .kbd-only { display: none; }
}
@media (prefers-reduced-motion: reduce) { .fp-percseq .pp-hint { transition: none; } }

/* D-63: the three heads share one line box, so Sequence, Loop and Kit sit on one baseline with every face's titles */
.fp-percseq .pp-col h2, .fp-percseq .pp-side h2 { line-height: 30px; }
.fp-percseq .pp-colhead, .fp-percseq .pp-loophead { min-height: 30px; align-items: center; }