/* ───────────────────────────────────────────────────────────────
   LYSERGIC INSTRUMENT — drone field console
   ─────────────────────────────────────────────────────────────── */
:root {
  --bg:      oklch(0.13 0.012 240);
  --bg-2:    oklch(0.17 0.012 240);
  --fg:      oklch(0.94 0.012 90);
  --fg-dim:  oklch(0.66 0.010 90);
  --fg-mute: oklch(0.44 0.008 240);
  --line:    oklch(0.27 0.010 240);
  --accent:  oklch(0.82 0.13 155);
  --accent-d:oklch(0.55 0.10 155);
  --panel:   color-mix(in oklab, var(--bg) 72%, transparent);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
html { background: var(--bg); }
body {
  background: var(--bg); color: var(--fg);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 13px; line-height: 1.6; font-weight: 400;
  -webkit-font-smoothing: antialiased;
  height: 100vh; overflow: hidden;
  display: flex; flex-direction: column;
  cursor: crosshair; user-select: none; -webkit-user-select: none;
  touch-action: manipulation; overscroll-behavior: none;
}
/* only the draggable instruments swallow touch — everything else can scroll */
.pad, .kn-dial, .seq-len, #keys, .srow input[type="range"], .seq-cells { touch-action: none; }
a { color: inherit; }
::selection { background: var(--accent); color: var(--bg); }

#viz { position: fixed; inset: 0; z-index: 0; display: block; animation: vizFlicker 5s steps(2) infinite; }
@keyframes vizFlicker {
  0%, 96%, 100% { opacity: 1; }
  97% { opacity: 0.72; }
  98% { opacity: 1; }
  98.6% { opacity: 0.55; }
  99% { opacity: 1; }
}
/* horror CRT overlays */
.vignette {
  position: fixed; inset: 0; pointer-events: none; z-index: 2;
  background:
    radial-gradient(120% 90% at 50% 42%, transparent 38%, rgba(40,0,6,0.35) 78%, rgba(0,0,0,0.78) 100%);
  mix-blend-mode: multiply;
}
.scanlines {
  position: fixed; inset: 0; pointer-events: none; z-index: 3; opacity: 0.5;
  background: repeating-linear-gradient(0deg, rgba(0,0,0,0.42) 0px, rgba(0,0,0,0.42) 1px, transparent 1px, transparent 3px);
  mix-blend-mode: multiply;
  animation: scanDrift 8s linear infinite;
}
@keyframes scanDrift { from { background-position: 0 0; } to { background-position: 0 -120px; } }
.grain {
  position: fixed; inset: 0; pointer-events: none; z-index: 40; opacity: 0.06;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.6 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  mix-blend-mode: overlay;
}
.sm { font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-mute); }

/* ── top bar ── */
.ibar {
  position: relative; z-index: 10;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
  padding: 14px 24px; gap: 16px;
  font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  background: linear-gradient(180deg, color-mix(in oklab, var(--bg) 80%, transparent), transparent);
}
.ibar .mark { color: var(--fg); letter-spacing: 0.18em; }
.ibar .mark::before { content: "◐ "; color: var(--accent); }
.ibar .title { text-align: center; color: var(--fg-dim); }
.ibar .title b { color: var(--accent); font-weight: 500; }
.ibar .right { display: flex; gap: 18px; justify-content: flex-end; align-items: center; color: var(--fg-dim); }
.ibar .back { text-decoration: none; color: var(--fg-dim); border-bottom: 1px solid var(--line); transition: color .2s, border-color .2s; }
.ibar .back:hover { color: var(--accent); border-color: var(--accent); }
.ibar .dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); margin-right: 7px; vertical-align: 1px; animation: pd 2.4s ease-out infinite; }
@keyframes pd { 0% { box-shadow: 0 0 0 0 color-mix(in oklab, var(--accent) 60%, transparent); } 70% { box-shadow: 0 0 0 7px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }

/* ── stage ── */
.stage { position: relative; z-index: 5; flex: 1; min-height: 0; display: grid; place-items: center; }

/* XY morph field */
.pad-wrap { position: relative; }
.hidden { display: none !important; }

/* play-surface segmented toggle */
.surf-seg {
  display: inline-flex; gap: 2px; margin-bottom: 12px; padding: 3px;
  border: 1px solid var(--line); border-radius: 2px; background: color-mix(in oklab, var(--bg) 60%, transparent);
}
.surfbtn {
  font: inherit; font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase;
  padding: 6px 16px; border: 0; background: transparent; color: var(--fg-mute);
  cursor: pointer; border-radius: 1px; transition: background .15s, color .15s;
}
.surfbtn:hover { color: var(--fg); }
.surfbtn.on { background: var(--accent); color: var(--bg); }

/* walkable field surface — shares the pad's square footprint */
.field {
  position: relative;
  width: min(46vh, calc(100vw - 660px), 440px); aspect-ratio: 1;
  border: 1px solid var(--line); border-radius: 2px; overflow: hidden;
  background: #080b0e; cursor: crosshair; touch-action: none;
}
.field canvas#fieldcv { display: block; width: 100%; height: 100%; }
.field-mini {
  position: absolute; right: 8px; top: 8px; width: 74px; height: 74px;
  border: 1px solid var(--line); border-radius: 2px;
  background: color-mix(in oklab, var(--bg) 70%, transparent);
}
.field .ax-c { position: absolute; left: 10px; bottom: 8px; font-size: 9px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent-d); pointer-events: none; }
.pad {
  position: relative;
  width: min(46vh, calc(100vw - 660px), 440px); aspect-ratio: 1;
  border: 1px solid var(--line);
  background: color-mix(in oklab, var(--bg) 40%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--accent) 6%, transparent), 0 30px 80px -40px #000;
  cursor: crosshair; overflow: hidden;
}
.pad::before, .pad::after { content: ""; position: absolute; background: var(--line); opacity: 0.5; }
.pad::before { left: 50%; top: 0; bottom: 0; width: 1px; }
.pad::after { top: 50%; left: 0; right: 0; height: 1px; }
.pad .pad-grid {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.5;
  background-image:
    linear-gradient(color-mix(in oklab, var(--line) 60%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in oklab, var(--line) 60%, transparent) 1px, transparent 1px);
  background-size: 12.5% 12.5%;
}
.pad .pad-puck {
  position: absolute; width: 26px; height: 26px; border-radius: 50%;
  transform: translate(-50%, -50%); pointer-events: none;
  border: 1px solid var(--accent);
  background: radial-gradient(circle, color-mix(in oklab, var(--accent) 60%, transparent), transparent 70%);
  box-shadow: 0 0 22px color-mix(in oklab, var(--accent) 70%, transparent);
}
.pad .pad-puck::after { content: ""; position: absolute; inset: 10px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); }
.pad .ax { position: absolute; font-size: 9px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--fg-mute); pointer-events: none; }
.pad .ax-x { right: 10px; bottom: 8px; }
.pad .ax-y { left: 8px; top: 10px; writing-mode: vertical-rl; }
.pad .ax-c { left: 10px; bottom: 8px; color: var(--accent-d); }
.pad-cap { display: flex; justify-content: space-between; margin-top: 10px; font-size: 9.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-mute); }

/* hint */
#hint {
  position: relative; z-index: 8; margin-top: 16px; text-align: center;
  pointer-events: none; transition: opacity .6s ease;
}
#hint .box { color: var(--fg-dim); font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase; line-height: 1.9; }
#hint .box b { color: var(--accent); font-weight: 500; }
#hint.gone { opacity: 0; }

/* ── sequencer panel (left) ── */
.seq {
  position: absolute; left: 24px; top: 18px; z-index: 9;
  width: 280px; padding: 14px 14px 16px;
  border: 1px solid var(--line); background: var(--panel); backdrop-filter: blur(7px);
  display: flex; flex-direction: column; gap: 11px;
}
.seq-h { display: flex; justify-content: space-between; align-items: baseline; border-bottom: 1px solid var(--line); padding-bottom: 9px; }
.seq-h b { font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg); font-weight: 500; }
.seq-transport { display: flex; gap: 7px; }
.sbtn {
  font: inherit; font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  background: var(--bg-2); color: var(--fg-dim); border: 1px solid var(--line);
  padding: 7px 9px; cursor: pointer; transition: all .16s ease; flex: 1; white-space: nowrap;
}
.sbtn:hover { border-color: var(--accent-d); color: var(--fg); }
.sbtn.play { flex: 1.3; }
.sbtn.on { background: var(--accent); color: var(--bg); border-color: var(--accent); }
.seq-grid { display: flex; flex-direction: column; gap: 6px; }
.seq-row { display: grid; grid-template-columns: 28px 1fr 24px; gap: 7px; align-items: center; }
.seq-lab { font-size: 9px; letter-spacing: 0.08em; color: var(--fg-mute); }
.seq-lab.glt { color: oklch(0.72 0.20 25); }
.seq-cells { display: grid; grid-template-columns: repeat(16, 1fr); gap: 2px; }
.seq-len {
  font-size: 10px; color: var(--fg-dim); text-align: center; cursor: ns-resize;
  border: 1px solid var(--line); background: var(--bg-2); padding: 3px 0; user-select: none;
  transition: border-color .15s ease, color .15s ease;
}
.seq-len:hover { border-color: var(--accent-d); color: var(--fg); }
.seq-len.drag { border-color: var(--accent); color: var(--accent); }
.step {
  appearance: none; padding: 0; aspect-ratio: 1; min-width: 0;
  background: color-mix(in oklab, var(--bg-2) 70%, transparent);
  border: 1px solid var(--line); cursor: pointer; transition: background .1s ease, box-shadow .1s ease;
}
.step.beat { border-color: color-mix(in oklab, var(--accent) 26%, var(--line)); }
.step:hover { background: color-mix(in oklab, var(--accent) 22%, transparent); }
.step.on { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 7px color-mix(in oklab, var(--accent) 60%, transparent); }
.step.play { outline: 1px solid var(--fg); outline-offset: -1px; }
.step.on.play { box-shadow: 0 0 12px var(--accent); }
.step.muted { opacity: 0.28; pointer-events: none; }
.seq-params { display: flex; flex-direction: column; gap: 7px; border-top: 1px solid var(--line); padding-top: 10px; }
.srow { display: grid; grid-template-columns: 46px 1fr 26px; gap: 10px; align-items: center; }
.srow span { font-size: 9px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--fg-mute); }
.srow b { font-size: 10px; color: var(--fg-dim); text-align: right; font-weight: 400; }
.srow input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 2px; background: var(--line); cursor: pointer;
}
.srow input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 11px; height: 11px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 6px color-mix(in oklab, var(--accent) 60%, transparent); cursor: ew-resize; }
.srow input[type="range"]::-moz-range-thumb { width: 11px; height: 11px; border: none; border-radius: 50%; background: var(--accent); cursor: ew-resize; }
.rack {
  position: absolute; right: 24px; top: 18px; z-index: 9;
  width: 202px; padding: 16px 14px;
  max-height: calc(100vh - 250px); overflow-y: auto;
  border: 1px solid var(--line); background: var(--panel); backdrop-filter: blur(7px);
  display: flex; flex-direction: column; gap: 13px;
}
.rack::-webkit-scrollbar { width: 6px; }
.rack::-webkit-scrollbar-thumb { background: var(--line); border-radius: 3px; }
.rack .rack-h { display: flex; justify-content: space-between; align-items: baseline; border-bottom: 1px solid var(--line); padding-bottom: 10px; position: sticky; top: 0; background: var(--panel); z-index: 2; }
.rack .rack-h b { font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg); font-weight: 500; }
.kn-group { display: flex; flex-direction: column; gap: 9px; }
.kn-gh { font-size: 8.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); opacity: 0.7; border-bottom: 1px solid color-mix(in oklab, var(--line) 60%, transparent); padding-bottom: 5px; }
.knobs { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px 4px; }
.knob { display: flex; flex-direction: column; align-items: center; gap: 5px; }
.kn-dial { position: relative; width: 42px; height: 42px; border-radius: 50%; cursor: ns-resize; }
.kn-arc { position: absolute; inset: 0; border-radius: 50%; -webkit-mask: radial-gradient(circle, transparent 58%, #000 60%); mask: radial-gradient(circle, transparent 58%, #000 60%); }
.kn-face { position: absolute; inset: 5px; border-radius: 50%; background: var(--bg-2); border: 1px solid var(--line); }
.knob.drag .kn-face { border-color: var(--accent-d); }
.kn-ind { position: absolute; inset: 5px; }
.kn-ind::before { content: ""; position: absolute; top: 5px; left: 50%; width: 2px; height: 11px; margin-left: -1px; background: var(--accent); border-radius: 1px; box-shadow: 0 0 6px var(--accent); }
.kn-label { font-size: 8.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-mute); }
.kn-val { font-size: 9px; color: var(--fg-dim); margin-top: -3px; }

/* transport strip (above keyboard) */
.transport { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.t-modes { display: flex; gap: 8px; }
.mbtn {
  font: inherit; font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase;
  background: var(--panel); color: var(--fg-dim); border: 1px solid var(--line);
  padding: 8px 16px; cursor: pointer; transition: all .18s ease; backdrop-filter: blur(6px); white-space: nowrap;
}
.mbtn:hover { border-color: var(--accent-d); color: var(--fg); }
.mbtn.on { background: var(--accent); color: var(--bg); border-color: var(--accent); }
.oct { display: flex; align-items: center; gap: 4px; border: 1px solid var(--line); background: var(--panel); backdrop-filter: blur(6px); padding: 4px 8px; white-space: nowrap; }
.oct span { font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-dim); padding: 0 6px; }
.oct b { color: var(--accent); }
.oct button { font: inherit; background: transparent; border: none; color: var(--fg); width: 26px; height: 24px; cursor: pointer; font-size: 14px; }
.oct button:hover { color: var(--accent); }

/* ── keyboard ── */
.keys-dock { position: relative; z-index: 10; padding: 0 18px 18px; }
#keys {
  position: relative; height: 150px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, color-mix(in oklab, var(--bg) 78%, transparent), color-mix(in oklab, var(--bg) 92%, transparent));
  backdrop-filter: blur(6px);
  overflow: hidden;
}
.kb-white { position: absolute; inset: 0; display: flex; }
.wkey {
  flex: 1; border-right: 1px solid oklch(0.32 0.010 240); position: relative;
  background: linear-gradient(180deg, oklch(0.52 0.010 240), oklch(0.40 0.010 240));
  transition: background .12s ease;
}
.wkey:last-child { border-right: 0; }
.wkey:hover { background: linear-gradient(180deg, oklch(0.60 0.03 155), oklch(0.46 0.03 155)); }
.wkey.on { background: var(--accent); box-shadow: inset 0 0 24px color-mix(in oklab, #000 30%, transparent); }
.wlbl { position: absolute; bottom: 8px; left: 0; right: 0; text-align: center; font-size: 8.5px; letter-spacing: 0.1em; color: oklch(0.20 0.008 240); }
.wkey.on .wlbl { color: var(--bg); }
.kb-black { position: absolute; top: 0; left: 0; right: 0; height: 62%; pointer-events: none; }
.bkey {
  position: absolute; top: 0; height: 100%;
  transform: translateX(-50%); pointer-events: auto;
  background: oklch(0.10 0.012 240); border: 1px solid #000;
  box-shadow: 0 6px 10px -4px #000, inset 0 -6px 8px -6px color-mix(in oklab, var(--accent) 30%, transparent);
  transition: background .12s ease;
}
.bkey:hover { background: oklch(0.16 0.03 155); }
.bkey.on { background: var(--accent); box-shadow: 0 0 18px color-mix(in oklab, var(--accent) 60%, transparent); }

.legend { display: flex; justify-content: space-between; gap: 14px; margin-top: 8px; color: var(--fg-mute); font-size: 9px; letter-spacing: 0.12em; text-transform: uppercase; flex-wrap: wrap; }
.legend kbd { font: inherit; background: var(--bg-2); border: 1px solid var(--line); border-radius: 2px; padding: 1px 5px; color: var(--fg-dim); }

@media (max-width: 900px) {
  .stage {
    display: flex; flex-direction: column; gap: 16px; padding: 16px 0 28px;
    align-items: center; overflow-y: auto; -webkit-overflow-scrolling: touch;
    touch-action: pan-y; overscroll-behavior: contain;
  }
  .seq, .rack { position: static; transform: none; width: min(92vw, 380px); }
  /* Voice rack: lay out in full inside the page scroll — no tiny nested box */
  .rack { max-height: none; overflow: visible; order: 0; }
  .rack .rack-h { position: static; }
  .seq { order: 1; }
  .pad-wrap { order: -1; }
  .pad { width: min(72vw, 320px); }
  .ibar .title { display: none; }
  /* roomier knobs for touch */
  .knobs { gap: 18px 8px; }
  .kn-dial { width: 52px; height: 52px; }
  .kn-ind::before { height: 13px; }
}
@media (max-height: 620px) {
  #keys { height: 120px; }
  .pad { width: min(34vh, 300px); }
}