:root {
  --bg: #14161a;
  --panel: #1d2027;
  --panel-2: #242833;
  --edge: #333845;
  --text: #d8dce6;
  --dim: #8b93a5;
  --accent: #4da3ff;
  --rec: #ff4747;
  --od: #ffa229;
  --play: #3ddc84;
  --stop: #8b93a5;
  --queued: #b58cff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.hidden { display: none !important; }

/* ---- power overlay ---- */
#power-overlay {
  position: fixed; inset: 0; z-index: 100;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
}
.power-box { text-align: center; max-width: 26rem; padding: 1rem; }
.power-box .power-logo { height: 110px; width: auto; margin-bottom: 0.5rem; }
.power-box h1 { letter-spacing: 0.35em; font-weight: 300; margin-bottom: 0.75rem; }
.power-box p { color: var(--dim); margin-bottom: 1.5rem; }
.power-box .hint { font-size: 0.8rem; margin-top: 1rem; }
#power-msg { min-height: 1.2em; margin-top: 0.8rem; font-size: 0.85rem; color: var(--od); }
#power-btn {
  font-size: 1.2rem; letter-spacing: 0.2em; padding: 0.9rem 2.4rem;
  background: var(--accent); color: #04121f; border: none; border-radius: 8px;
  cursor: pointer; font-weight: 600;
}
#power-btn:hover { filter: brightness(1.15); }

/* ---- top bar ---- */
#topbar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.9rem;
  padding: 0.55rem 0.9rem;
  background: var(--panel);
  border-bottom: 1px solid var(--edge);
  position: sticky; top: 0; z-index: 10;
}
.brand {
  display: flex; align-items: center; gap: 0.5rem;
  letter-spacing: 0.3em; font-weight: 300; color: var(--accent); margin-right: 0.4rem;
}
.brand .logo { height: 30px; width: auto; display: block; }
.tb-group { display: flex; align-items: center; gap: 0.4rem; }
.tb-group label { font-size: 0.72rem; text-transform: uppercase; color: var(--dim); letter-spacing: 0.05em; }
.tb-group .unit { font-size: 0.72rem; color: var(--dim); }
.tb-group label.chk { display: flex; align-items: center; gap: 0.3rem; cursor: pointer; text-transform: none; font-size: 0.8rem; color: var(--text); }
.tb-group input[type="number"] {
  width: 4.6rem; background: var(--panel-2); color: var(--text);
  border: 1px solid var(--edge); border-radius: 4px; padding: 0.25rem 0.35rem;
}
.tb-group select {
  max-width: 11rem; background: var(--panel-2); color: var(--text);
  border: 1px solid var(--edge); border-radius: 4px; padding: 0.25rem;
}
.tb-group input[type="range"] { width: 7rem; accent-color: var(--accent); }
.tb-group button {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--edge);
  border-radius: 5px; padding: 0.35rem 0.7rem; cursor: pointer; font-size: 0.78rem;
  letter-spacing: 0.05em;
}
.tb-group button:hover { border-color: var(--accent); }
#midi-learn-btn.active { background: var(--queued); color: #120a20; border-color: var(--queued); font-weight: 700; }
#calibrate-btn {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--edge);
  border-radius: 5px; padding: 0.25rem 0.5rem; cursor: pointer; font-size: 0.72rem;
}
#calibrate-btn:hover:not(:disabled) { border-color: var(--accent); }
#calibrate-btn:disabled { opacity: 0.5; cursor: default; }
#beat-led {
  width: 12px; height: 12px; border-radius: 50%;
  background: #333; transition: background 0.05s;
}
#beat-led.on { background: var(--accent); box-shadow: 0 0 8px var(--accent); }
#beat-led.bar { background: var(--play); box-shadow: 0 0 8px var(--play); }
#clock-led {
  width: 9px; height: 9px; border-radius: 50%; display: inline-block; background: #333;
}
#clock-led.on { background: var(--play); box-shadow: 0 0 6px var(--play); }

/* ---- drum machine ---- */
#drum-panel {
  background: var(--panel);
  border-bottom: 1px solid var(--edge);
  padding: 0.6rem 0.9rem;
}
.drum-head { display: flex; align-items: center; gap: 0.7rem; margin-bottom: 0.5rem; flex-wrap: wrap; }
.drum-title { letter-spacing: 0.25em; font-weight: 300; color: var(--od); font-size: 0.85rem; }
.drum-head label { font-size: 0.72rem; text-transform: uppercase; color: var(--dim); }
.drum-head input[type="range"] { width: 7rem; accent-color: var(--od); }
.drum-head button {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--edge);
  border-radius: 5px; padding: 0.3rem 0.8rem; cursor: pointer; font-size: 0.75rem;
  letter-spacing: 0.05em;
}
.drum-head button:hover { border-color: var(--od); }
.drum-head #drums-toggle.active {
  background: var(--od); color: #1d1000; border-color: var(--od); font-weight: 700;
}
.drum-head .hint { font-size: 0.7rem; color: var(--dim); margin-left: auto; }
#drum-grid { display: flex; flex-direction: column; gap: 0.3rem; overflow-x: auto; }
.drum-row { display: flex; align-items: center; gap: 0.25rem; }
.pat-bank { display: inline-flex; gap: 0.15rem; }
.pat-slot {
  width: 1.5rem; background: var(--panel-2); color: var(--dim);
  border: 1px solid var(--edge); border-radius: 4px;
  font-size: 0.72rem; padding: 0.2rem 0; cursor: pointer;
  /* single letter: kill inherited letter-spacing (adds trailing space that
     shifts the glyph off-center) and center it properly */
  display: inline-flex; align-items: center; justify-content: center;
  letter-spacing: 0; line-height: 1;
}
.pat-slot.has { color: var(--text); }
.pat-slot.active { background: var(--od); color: #1d1000; border-color: var(--od); font-weight: 700; }
#bass-bank .pat-slot.active { background: var(--play); color: #04200f; border-color: var(--play); }
.pat-add {
  width: 1.5rem; background: none; color: var(--accent);
  border: 1px dashed var(--edge); border-radius: 4px;
  font-size: 0.85rem; padding: 0.15rem 0; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  letter-spacing: 0; line-height: 1;
}
.pat-add:hover { border-color: var(--accent); }

.drum-remove {
  flex: none; background: none; border: none; color: var(--dim);
  cursor: pointer; font-size: 0.7rem; padding: 0 0.15rem;
}
.drum-remove:hover { color: var(--rec); }
.drum-steps {
  width: 2.6rem; flex: none;
  background: var(--panel-2); color: var(--text);
  border: 1px solid var(--edge); border-radius: 4px;
  font-size: 0.68rem; padding: 0.15rem 0.2rem;
}
#drum-add-type {
  background: var(--panel-2); color: var(--text);
  border: 1px solid var(--edge); border-radius: 4px; padding: 0.2rem; font-size: 0.72rem;
}
.drum-label {
  width: 4.2rem; flex: none; text-align: left;
  background: none; border: 1px solid var(--edge); border-radius: 4px;
  color: var(--dim); font-size: 0.68rem; letter-spacing: 0.06em;
  padding: 0.3rem 0.4rem; cursor: pointer;
}
.drum-label:hover { color: var(--text); border-color: var(--od); }
.drum-row .step {
  width: 1.6rem; height: 1.6rem; flex: none;
  background: var(--panel-2); border: 1px solid var(--edge); border-radius: 4px;
  cursor: pointer;
}
.drum-row .step.beat1 { border-color: #4a5060; }
.drum-row .step.on { background: var(--od); border-color: var(--od); }
.drum-row .step.now { outline: 2px solid var(--accent); outline-offset: -2px; }
.drum-level { width: 5rem; flex: none; accent-color: var(--od); margin-left: 0.3rem; }

/* ---- song arranger ---- */
#song-panel {
  background: var(--panel);
  border-bottom: 1px solid var(--edge);
  padding: 0.6rem 0.9rem;
}
.song-title { color: var(--rec) !important; }
#song-panel .drum-head label { font-size: 0.72rem; text-transform: uppercase; color: var(--dim); }
#song-panel .drum-head select {
  background: var(--panel-2); color: var(--text);
  border: 1px solid var(--edge); border-radius: 4px; padding: 0.2rem; font-size: 0.72rem;
}
#song-panel .drum-head button {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--edge);
  border-radius: 5px; padding: 0.3rem 0.7rem; cursor: pointer; font-size: 0.75rem;
}
#song-panel .drum-head button:hover { border-color: var(--rec); }
.song-play { color: var(--play) !important; }
.song-render { color: var(--accent) !important; }
.song-render:disabled { color: var(--rec) !important; opacity: 1; }
.song-zoom { display: inline-flex; gap: 0.2rem; }
.song-zoom button { width: 1.6rem; }
.song-scroll {
  overflow: auto; resize: vertical;
  max-height: 70vh; min-height: 8rem;
}
.song-canvas { display: block; cursor: pointer; touch-action: none; }

/* ---- TB-303 bass ---- */
#bass-panel {
  background: var(--panel);
  border-bottom: 1px solid var(--edge);
  padding: 0.6rem 0.9rem;
}
#bass-panel .drum-head input[type="range"] { width: 4.5rem; accent-color: var(--play); }
#bass-panel .drum-head select {
  background: var(--panel-2); color: var(--text);
  border: 1px solid var(--edge); border-radius: 4px; padding: 0.2rem; font-size: 0.72rem;
}
#bass-panel .drum-head button:hover { border-color: var(--play); }
#bass-panel #bass-toggle.active {
  background: var(--play); color: #04200f; border-color: var(--play); font-weight: 700;
}
.bass-title { color: var(--play) !important; }
#bass-grid { display: flex; flex-direction: column; gap: 1px; overflow-x: auto; }
.bass-row { gap: 2px !important; }
.bass-label {
  width: 2.4rem; flex: none; text-align: right; padding-right: 0.3rem;
  color: var(--dim); font-size: 0.58rem; letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}
.bass-row .step.bass-step {
  width: 1.6rem; height: 0.72rem; border-radius: 2px;
}
.bass-row.c-row .step.bass-step { border-color: #4a5060; }
.bass-row .step.bass-step.on { background: var(--play); border-color: var(--play); }
.bass-row.mod-row .step.mod.on { background: var(--od); border-color: var(--od); }
.bass-row.mod-row { margin-top: 3px; }
.bass-head-cell {
  width: 1.6rem; height: 0.4rem; flex: none;
  border-radius: 2px; background: var(--panel-2);
}
.bass-head-cell.beat1 { background: #2c3140; }
.bass-head-cell.now { background: var(--accent); box-shadow: 0 0 6px var(--accent); }

/* ---- PRIZM-2 synth ---- */
#prizm-panel {
  background: var(--panel);
  border-bottom: 1px solid var(--edge);
  padding: 0.6rem 0.9rem;
}
.prizm-title {
  background: linear-gradient(90deg, #ff3b30, #ff9500, #ffd60a, #34c759, #32ade6, #5856d6, #af52de);
  -webkit-background-clip: text; background-clip: text; color: transparent !important;
  font-weight: 600;
}
#prizm-panel .drum-head input[type="range"] { accent-color: var(--queued); }
#prizm-ui { display: flex; flex-direction: column; gap: 0.6rem; }

/* ---- CHOPPAH ---- */
.choppah-title { color: var(--od) !important; font-weight: 600; letter-spacing: 0.25em; }
#choppah-ui { display: flex; flex-direction: column; gap: 0.5rem; padding: 0.2rem 0; }
.chop-row { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.chop-row button {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--edge);
  border-radius: 5px; padding: 0.32rem 0.7rem; cursor: pointer;
  font-size: 0.72rem; letter-spacing: 0.05em;
}
.chop-row button:hover { border-color: var(--od); }
.chop-load { color: var(--od) !important; }
.chop-name { font-size: 0.72rem; color: var(--dim); min-width: 8rem; }
.chop-canvas {
  width: 100%; height: 150px; display: block;
  border: 1px solid var(--edge); border-radius: 6px; cursor: pointer; background: #14161a;
}
.chop-hint { font-size: 0.68rem; color: var(--dim); }
.chop-kbd { background: var(--panel-2); border: 1px solid var(--edge); border-radius: 8px; padding: 0.4rem 0.6rem; }
.chop-kbd-top {
  display: flex; justify-content: space-between; font-size: 0.62rem;
  letter-spacing: 0.04em; margin-bottom: 0.35rem;
}
.chop-zone-ctrl { color: var(--od); }
.chop-zone-pitch { color: var(--accent); }
.chop-keys { position: relative; height: 84px; display: flex; border-radius: 6px; overflow: hidden; }
.chop-key {
  flex: 1; border: 1px solid #11131f; border-radius: 0 0 5px 5px;
  cursor: pointer; position: relative;
}
.chop-key.ctrl { background: linear-gradient(#ffe1b0, #ffca7a); }
.chop-key.pitch { background: linear-gradient(#cfe0ff, #a9c8f5); }
.chop-key.black {
  position: absolute; height: 58%; z-index: 2;
  border: 1px solid #000; border-radius: 0 0 4px 4px;
}
.chop-key.ctrl.black { background: linear-gradient(#7a4a10, #3a2405); }
.chop-key.pitch.black { background: linear-gradient(#1f3350, #0a1626); }
.chop-key.off { opacity: 0.3; cursor: default; }
.chop-key.held { filter: brightness(1.12); box-shadow: inset 0 0 0 2px var(--od); }
.chop-key.active { box-shadow: inset 0 0 0 2px var(--od); }
.chop-key .kc {
  position: absolute; bottom: 3px; left: 0; right: 0; text-align: center;
  font-size: 0.56rem; font-weight: 600; color: #3a3f52; pointer-events: none;
}
.chop-key.black .kc { color: #cfd3e0; bottom: 2px; }
.pz-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.6rem;
}
.pz-osc {
  background: var(--panel-2); border: 1px solid var(--edge); border-radius: 8px;
  padding: 0.5rem 0.7rem;
}
.pz-osc-title { font-size: 0.68rem; letter-spacing: 0.15em; color: var(--dim); margin-bottom: 0.4rem; }
.pz-osc-a .pz-osc-title { color: #ffb454; }
.pz-osc-b .pz-osc-title { color: #9d7bff; }
.pz-waves { display: flex; gap: 0.3rem; margin-bottom: 0.4rem; }
.pz-waves button {
  font-size: 0.62rem; letter-spacing: 0.08em; padding: 0.2rem 0.5rem;
  border-radius: 5px; border: 1px solid var(--edge);
  background: var(--panel); color: var(--dim); cursor: pointer;
}
.pz-waves button.on { color: var(--text); border-color: var(--accent); background: #1a2436; }
.pz-ctl {
  display: grid; grid-template-columns: 5.2rem 1fr 3.4rem;
  align-items: center; gap: 0.5rem; margin: 0.25rem 0;
}
.pz-ctl label { font-size: 0.66rem; color: var(--dim); letter-spacing: 0.05em; }
.pz-ctl input { width: 100%; accent-color: var(--accent); }
.pz-ctl output { font-size: 0.66rem; color: var(--text); text-align: right; font-variant-numeric: tabular-nums; }
.pz-kbd { background: var(--panel-2); border: 1px solid var(--edge); border-radius: 8px; padding: 0.5rem 0.7rem; }
.pz-kbd-top {
  display: flex; align-items: center; justify-content: center; gap: 0.6rem;
  font-size: 0.7rem; color: var(--dim); margin-bottom: 0.4rem;
}
.pz-kbd-top button {
  background: var(--panel); border: 1px solid var(--edge); color: var(--dim);
  border-radius: 5px; padding: 0.15rem 0.5rem; cursor: pointer; font-size: 0.68rem;
}
.pz-kbd-top button:hover { border-color: var(--accent); color: var(--text); }
.pz-keys { position: relative; height: 96px; display: flex; border-radius: 6px; overflow: hidden; }
.pz-key {
  flex: 1; border: 1px solid #11131f; border-radius: 0 0 5px 5px;
  background: linear-gradient(#f2f3f7, #d9dbe6); cursor: pointer; position: relative;
}
.pz-key.black {
  position: absolute; width: 6.2%; height: 60%; z-index: 2;
  background: linear-gradient(#2a2d3f, #14162a);
  border: 1px solid #000; border-radius: 0 0 4px 4px;
}
.pz-key.held { background: linear-gradient(90deg, #ff9500, #ffd60a, #34c759, #32ade6); }
.pz-key.black.held { filter: brightness(0.8); }
.pz-key .kc {
  position: absolute; bottom: 4px; left: 0; right: 0; text-align: center;
  font-size: 0.6rem; color: #8a8fa8; pointer-events: none;
}

/* per-loop quantize override */
.q-select {
  background: var(--panel-2); color: var(--dim);
  border: 1px solid var(--edge); border-radius: 4px;
  font-size: 0.66rem; padding: 0.12rem; margin-left: auto; margin-right: 0.4rem;
}

/* ---- channels grid ---- */
#channels {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 0.9rem;
  padding: 1rem;
  align-content: start;
}

.channel {
  background: var(--panel);
  border: 1px solid var(--edge);
  border-radius: 10px;
  padding: 0.7rem;
  display: flex; flex-direction: column; gap: 0.6rem;
}
.auto-channel {
  border-color: #5a4b79;
}
.auto-channel .ch-title {
  color: var(--queued);
}
.auto-channel .a-target {
  flex: 1;
  background: var(--panel-2); color: var(--text);
  border: 1px solid var(--edge); border-radius: 4px; padding: 0.2rem;
}
.auto-channel .a-state {
  color: var(--queued);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}
.auto-channel .a-seq-canvas {
  width: 100%;
  border: 1px solid var(--edge);
  border-radius: 5px;
  background: #14161a;
  cursor: crosshair;
  touch-action: none;
}
.auto-channel .a-rec.active {
  background: var(--rec);
  color: #fff;
  border-color: var(--rec);
}
.auto-channel .a-seq.active {
  background: var(--queued);
  color: #120a20;
  border-color: var(--queued);
}
.channel .ch-head { display: flex; align-items: center; justify-content: space-between; }
.channel .ch-title { font-size: 0.85rem; color: var(--dim); letter-spacing: 0.08em; }
.channel .ch-close {
  background: none; border: none; color: var(--dim); cursor: pointer; font-size: 1rem;
}
.channel .ch-close:hover { color: var(--rec); }

/* main loop button with progress ring */
.loop-btn-wrap { display: flex; justify-content: center; }
.loop-btn {
  position: relative; width: 108px; height: 108px;
  border-radius: 50%; border: none; cursor: pointer;
  background: var(--panel-2);
  display: flex; align-items: center; justify-content: center;
}
.loop-btn svg { position: absolute; inset: 0; transform: rotate(-90deg); pointer-events: none; }
.loop-btn .ring-bg { fill: none; stroke: var(--edge); stroke-width: 5; }
.loop-btn .ring-fg { fill: none; stroke: var(--play); stroke-width: 5; stroke-linecap: round; }
.loop-btn .state-label {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em;
  color: var(--dim); text-transform: uppercase; z-index: 1;
  text-align: center; line-height: 1.3;
}
.loop-btn .time-label { display: block; font-weight: 400; font-size: 0.68rem; color: var(--dim); }

.channel[data-state="recording"]   .loop-btn { box-shadow: 0 0 14px var(--rec); }
.channel[data-state="recording"]   .state-label { color: var(--rec); }
.channel[data-state="overdubbing"] .loop-btn { box-shadow: 0 0 14px var(--od); }
.channel[data-state="overdubbing"] .state-label { color: var(--od); }
.channel[data-state="playing"]     .state-label { color: var(--play); }
.channel[data-state="stopped"]     .state-label { color: var(--stop); }
.channel.pending .loop-btn { animation: pulse 0.5s ease-in-out infinite alternate; }
.channel.pending .state-label { color: var(--queued); }
@keyframes pulse { from { box-shadow: 0 0 4px var(--queued); } to { box-shadow: 0 0 16px var(--queued); } }

.ch-buttons { display: flex; gap: 0.4rem; justify-content: center; }
.ch-buttons button {
  flex: 1; background: var(--panel-2); color: var(--text);
  border: 1px solid var(--edge); border-radius: 5px;
  padding: 0.3rem 0; cursor: pointer; font-size: 0.72rem; letter-spacing: 0.05em;
}
.ch-buttons button:hover { border-color: var(--accent); }
.ch-buttons button:disabled { opacity: 0.35; cursor: default; }

.midi-row { align-items: center; }
.b-arm, .b-auto { max-width: 5rem; }
.b-auto.active { background: var(--accent); color: #04121f; border-color: var(--accent); }
.b-chop { color: var(--od); }
.b-oneshot.active { background: var(--od); color: #1d1000; border-color: var(--od); font-weight: 700; }
.b-arm.active {
  background: var(--rec); color: #fff; border-color: var(--rec);
  animation: pulse 0.6s ease-in-out infinite alternate;
}
.midi-rec {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 0.3rem;
  font-size: 0.72rem; color: var(--dim); cursor: pointer; user-select: none;
}
.midi-rec input { accent-color: var(--accent); }
.midi-count { color: var(--accent); }

.ch-vol { display: flex; align-items: center; gap: 0.45rem; }
.ch-vol label { font-size: 0.7rem; color: var(--dim); text-transform: uppercase; }
.ch-vol input { flex: 1; accent-color: var(--accent); }
.ch-pitch input {
  flex: none; width: 3.6rem;
  background: var(--panel-2); color: var(--text);
  border: 1px solid var(--edge); border-radius: 4px; padding: 0.15rem 0.3rem;
}
.ch-pitch .unit { font-size: 0.7rem; color: var(--dim); }
.ch-src select {
  flex: 1; min-width: 0;
  background: var(--panel-2); color: var(--text);
  border: 1px solid var(--edge); border-radius: 4px;
  padding: 0.15rem 0.2rem; font-size: 0.68rem;
}

/* fx */
.fx-section { border-top: 1px solid var(--edge); padding-top: 0.5rem; display: flex; flex-direction: column; gap: 0.45rem; }
.fx-add { display: flex; gap: 0.35rem; }
.fx-add select {
  flex: 1; background: var(--panel-2); color: var(--text);
  border: 1px solid var(--edge); border-radius: 4px; padding: 0.2rem; font-size: 0.75rem;
}
.fx-add button {
  background: var(--panel-2); color: var(--accent); border: 1px solid var(--edge);
  border-radius: 4px; cursor: pointer; padding: 0 0.5rem;
}
.fx-card { background: var(--panel-2); border-radius: 6px; padding: 0.4rem 0.5rem; }
.fx-card .fx-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.25rem; }
.fx-card .fx-name { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.05em; color: var(--accent); }
.fx-card .fx-remove { background: none; border: none; color: var(--dim); cursor: pointer; }
.fx-card .fx-remove:hover { color: var(--rec); }
.fx-param { display: grid; grid-template-columns: 4.2rem 1fr 2.7rem 1rem; gap: 0.3rem; align-items: center; font-size: 0.68rem; color: var(--dim); }
.fx-param input { width: 100%; accent-color: var(--accent); }
.fx-param .val { text-align: right; font-variant-numeric: tabular-nums; }
.fx-param select.fx-sel {
  grid-column: 2 / 5; background: var(--panel); color: var(--text);
  border: 1px solid var(--edge); border-radius: 3px; font-size: 0.66rem; padding: 0.1rem;
}
.fx-auto-btn {
  background: none; border: 1px solid var(--edge); color: var(--dim);
  border-radius: 3px; font-size: 0.6rem; padding: 0 0.2rem; cursor: pointer; line-height: 1.3;
}
.fx-auto-btn.on { color: #120a20; background: var(--queued); border-color: var(--queued); font-weight: 700; }
.fx-auto { margin: 0.15rem 0 0.4rem; display: flex; flex-direction: column; gap: 0.25rem; }
.fx-auto-bar { display: flex; align-items: center; gap: 0.3rem; }
.fx-auto-bar select {
  background: var(--panel); color: var(--queued);
  border: 1px solid var(--edge); border-radius: 3px; font-size: 0.62rem; padding: 0.05rem;
}
.fx-auto-bar button {
  background: var(--panel); color: var(--dim); border: 1px solid var(--edge);
  border-radius: 3px; font-size: 0.6rem; padding: 0.05rem 0.4rem; cursor: pointer;
}
.fx-auto-bar button:hover { color: var(--queued); border-color: var(--queued); }
.fx-auto-bar button.on {
  color: #2a0707;
  background: var(--rec);
  border-color: var(--rec);
  font-weight: 700;
}
.fx-auto-lane {
  width: 100%; height: 46px; display: block;
  border: 1px solid var(--edge); border-radius: 4px;
  cursor: crosshair; touch-action: none; background: #14161a;
}
.fx-param .val.auto-live { color: var(--queued); font-weight: 600; }

.fx-rack { display: flex; flex-direction: column; gap: 0.45rem; }
.fx-rack .fx-list { display: flex; flex-direction: column; gap: 0.45rem; }

/* instrument FX racks */
.inst-fx {
  margin-top: 0.5rem; padding-top: 0.5rem;
  border-top: 1px dashed var(--edge);
}
.inst-fx .fx-add { max-width: 16rem; margin-bottom: 0.45rem; }
.inst-fx .fx-list {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 0.5rem;
}
.drum-head #drums-fx-btn.active, .drum-head #bass-fx-btn.active, .drum-head #prizm-fx-btn.active {
  border-color: var(--queued); color: var(--queued);
}

/* MIDI learn highlighting */
body.learn-mode [data-mappable] { outline: 2px dashed var(--queued); outline-offset: 2px; cursor: crosshair; }
[data-mappable].learn-armed { outline: 2px solid var(--queued) !important; animation: pulse 0.4s infinite alternate; }
[data-mappable].mapped-badge { position: relative; }

/* add channel tools */
#add-loop-tools {
  position: fixed; right: 1.2rem; bottom: 3.2rem;
  display: flex; flex-direction: column; gap: 0.45rem;
  z-index: 20;
}
#add-channel,
#add-auto-channel {
  background: var(--accent); color: #04121f;
  border: none; border-radius: 999px;
  font-size: 0.82rem; font-weight: 700; letter-spacing: 0.07em;
  padding: 0.65rem 1rem; cursor: pointer;
  box-shadow: 0 4px 16px rgba(0,0,0,0.5);
}
#add-auto-channel {
  background: var(--queued);
  color: #120a20;
}
#add-channel:hover, #add-auto-channel:hover { filter: brightness(1.12); }

/* ---- waveform editor ---- */
#slicer-overlay {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(0, 0, 0, 0.65);
  display: flex; align-items: center; justify-content: center;
  padding: 1.5rem;
}
.slicer-title { color: var(--od) !important; }
#editor-overlay {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(0, 0, 0, 0.65);
  display: flex; align-items: center; justify-content: center;
  padding: 1.5rem;
}
.editor-box {
  background: var(--panel);
  border: 1px solid var(--edge);
  border-radius: 10px;
  width: min(64rem, 100%);
  padding: 0.8rem;
  display: flex; flex-direction: column; gap: 0.6rem;
}
.editor-head { display: flex; align-items: center; gap: 0.8rem; }
.editor-title { letter-spacing: 0.2em; color: var(--accent); font-size: 0.85rem; font-weight: 600; }
.editor-info { color: var(--dim); font-size: 0.75rem; flex: 1; }
.ed-close { background: none; border: none; color: var(--dim); cursor: pointer; font-size: 1.1rem; }
.ed-close:hover { color: var(--rec); }
.editor-canvas {
  width: 100%; height: 170px; display: block;
  border: 1px solid var(--edge); border-radius: 6px;
  cursor: crosshair;
}
.editor-row { display: flex; align-items: center; gap: 0.4rem; flex-wrap: wrap; }
.editor-row button {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--edge);
  border-radius: 5px; padding: 0.32rem 0.6rem; cursor: pointer;
  font-size: 0.7rem; letter-spacing: 0.05em;
}
.editor-row button:hover:not(:disabled) { border-color: var(--accent); }
.editor-row button:disabled { opacity: 0.35; cursor: default; }
.ed-gain { display: flex; align-items: center; gap: 0.35rem; font-size: 0.7rem; color: var(--dim); margin-left: 0.5rem; }
.ed-gain input { width: 7rem; accent-color: var(--accent); }
.ed-gain span { min-width: 3.4rem; text-align: right; font-variant-numeric: tabular-nums; }
.editor-foot .ed-sel { flex: 1; color: var(--dim); font-size: 0.72rem; }
.editor-foot .ed-apply {
  background: var(--accent); color: #04121f; border-color: var(--accent); font-weight: 700;
}
.editor-foot .ed-apply:hover { filter: brightness(1.15); }

/* ---- MIDI sequencer ---- */
#seq-overlay {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(0, 0, 0, 0.65);
  display: flex; align-items: center; justify-content: center;
  padding: 1.5rem;
}
.seq-box {
  width: min(70rem, 100%); height: min(80vh, 640px);
  min-width: 34rem; min-height: 22rem;
  resize: both; overflow: hidden;
  display: flex; flex-direction: column;
}
.seq-scroll {
  flex: 1 1 auto; overflow-y: auto; overflow-x: hidden;
  border: 1px solid var(--edge); border-radius: 6px; background: #1f232b;
}
.seq-canvas {
  width: 100%; display: block; cursor: crosshair; background: #1f232b;
}
.seq-l {
  display: flex; align-items: center; gap: 0.3rem;
  font-size: 0.7rem; color: var(--dim); text-transform: uppercase;
}
.seq-l select {
  background: var(--panel-2); color: var(--text);
  border: 1px solid var(--edge); border-radius: 4px; padding: 0.2rem; font-size: 0.75rem;
}
.seq-l input[type="range"] { width: 5.5rem; accent-color: var(--accent); }
.seq-vel-val { min-width: 1.8rem; text-align: right; font-variant-numeric: tabular-nums; }
.seq-loopout { font-size: 0.72rem; color: var(--dim); margin-left: 0.5rem; }
.seq-rec { background: var(--rec) !important; color: #fff !important; border-color: var(--rec) !important; }
.seq-step-group { display: inline-flex; gap: 0.25rem; margin-left: 0.4rem; }
.seq-step-group button {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--edge);
  border-radius: 5px; padding: 0.2rem 0.5rem; cursor: pointer; font-size: 0.72rem;
}
.seq-step-group button:hover { border-color: var(--play); }
.seq-step.active { background: var(--play); color: #04200f; border-color: var(--play); font-weight: 700; }

/* ---- tap tempo dialog ---- */
#tap-overlay {
  position: fixed; inset: 0; z-index: 60;
  background: rgba(0, 0, 0, 0.7);
  display: flex; align-items: center; justify-content: center;
  padding: 1.5rem;
}
.tap-box { width: min(24rem, 100%); text-align: center; }
.tap-help { color: var(--dim); font-size: 0.85rem; }
.tap-pad {
  width: 9rem; height: 9rem; border-radius: 50%; margin: 0.6rem auto;
  background: var(--accent); color: #04121f; border: none;
  font-size: 1.4rem; font-weight: 700; letter-spacing: 0.15em; cursor: pointer;
}
.tap-pad:active { filter: brightness(1.3); transform: scale(0.97); }
.tap-readout {
  font-size: 1.1rem; color: var(--play); min-height: 1.4em;
  font-variant-numeric: tabular-nums; margin-bottom: 0.4rem;
}

/* status bar */
#statusbar {
  display: flex; justify-content: space-between; gap: 1rem;
  padding: 0.35rem 0.9rem;
  background: var(--panel); border-top: 1px solid var(--edge);
  font-size: 0.72rem; color: var(--dim);
}