/* benten — dark stage console.
   Built to read across a room mid-jam: near-black ground, one bright red-rust
   accent, amber for roots + "now playing", oversized glanceable chords, and a
   luminous fretboard. Markdown is still the source of truth; this is just the
   glass it's shown through. */

:root {
  /* grounds — near-black, faintly warm-blue, stepping up for raised surfaces */
  --bg:      #14161a;
  --bg-2:    #1b1e24;   /* panels */
  --bg-3:    #23272f;   /* inputs, chips */
  --bg-4:    #2c313b;   /* hover */
  --board:   #0d0f13;   /* fretboard + chord boxes — darkest, the "stage floor" */

  /* ink */
  --ink:     #f3efe4;   /* primary — chord symbols, headings */
  --ink-2:   #d8d4c8;
  --muted:   #8b929c;
  --faint:   #5b626d;

  /* lines */
  --line:    #2b303a;
  --line-2:  #383f4b;

  /* the red pencil, brightened for the dark; amber is the stage light */
  --accent:      #e85835;
  --accent-2:    #f07752;
  --accent-soft: rgba(232, 88, 53, 0.16);
  --amber:       #e8b24a;
  --amber-soft:  rgba(232, 178, 74, 0.18);
  --good:        #6fcf97;
  --bad:         #e8776b;

  --font:  ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --mono:  "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html { color-scheme: dark; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.55;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* faint stage-light wash so the near-black never reads as flat */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(140% 80% at 50% -10%, rgba(232, 88, 53, 0.07), transparent 60%),
    radial-gradient(120% 90% at 100% 0%, rgba(232, 178, 74, 0.04), transparent 55%);
}

a { color: var(--accent); }
.muted, .muted code { color: var(--muted); }
code {
  font-family: var(--mono);
  background: var(--bg-3);
  color: var(--ink-2);
  padding: 0.05rem 0.35rem;
  border-radius: 4px;
}

/* form controls ----------------------------------------------------------- */
button, select, input, textarea { font: inherit; }
button, select,
input[type="text"], input[type="search"], input[type="number"], textarea {
  background: var(--bg-3);
  color: var(--ink);
  border: 1px solid var(--line-2);
  border-radius: 6px;
  padding: 8px 11px;
  min-height: 39px;
  transition: background-color .16s, border-color .16s, color .16s, box-shadow .16s;
}
textarea { resize: vertical; }
button { cursor: pointer; }
button:hover:not(:disabled) { background: var(--bg-4); border-color: var(--faint); }
button:disabled, select:disabled { opacity: 0.4; cursor: not-allowed; }
input::placeholder, textarea::placeholder { color: var(--faint); }
input[type="checkbox"], input[type="range"] { accent-color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.skip-link {
  position: fixed; left: 12px; top: -80px; z-index: 20;
  padding: 10px 16px; background: var(--accent); color: #17110e;
  border-radius: 6px; font-weight: 600;
}
.skip-link:focus { top: 12px; }

/* ------------------------------------------------------------------------- */
/* the stage bar — nav + workspace + live light, sticky across the top       */
/* ------------------------------------------------------------------------- */
.appbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 18px;
  height: 58px; padding: 0 22px;
  background: rgba(20, 22, 26, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--accent); color: #17110e;
  font: italic 22px/30px var(--serif); text-align: center;
  box-shadow: 0 0 18px rgba(232, 88, 53, 0.45);
}
.brand-name { font: 600 20px var(--serif); letter-spacing: -0.5px; }
.brand-dot { color: var(--accent); }

.modules { display: flex; gap: 4px; }
.module {
  display: flex; align-items: center; gap: 9px;
  background: transparent; color: var(--muted);
  border: 1px solid transparent; border-radius: 7px;
  padding: 8px 13px; min-height: 40px; font-size: 14px;
}
.module:hover:not(:disabled):not(.is-active) { color: var(--ink); background: var(--bg-2); }
.module.is-active {
  color: var(--ink); background: var(--bg-3);
  border-color: var(--line-2);
  box-shadow: inset 0 -2px 0 var(--accent);
}
.module.is-stub { opacity: 0.4; cursor: not-allowed; }
.nav-number { font: 10px var(--mono); color: var(--faint); }
.module.is-active .nav-number { color: var(--accent); }

.appbar-status {
  margin-left: auto; display: flex; align-items: center; gap: 8px;
  font: 10px var(--mono); letter-spacing: 1.4px; text-transform: uppercase;
  color: var(--muted);
}
#workspace-name { color: var(--ink-2); }
.live-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--good); box-shadow: 0 0 9px var(--good);
  animation: livePulse 2.4s ease-in-out infinite;
}
@keyframes livePulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

/* ------------------------------------------------------------------------- */
/* shell                                                                     */
/* ------------------------------------------------------------------------- */
.app-shell {
  position: relative; z-index: 1;
  flex: 1; display: flex; flex-direction: column; min-height: 0;
}
main {
  flex: 1; width: 100%; max-width: 1320px; margin: 0 auto;
  padding: 30px 34px 44px;
}

.statusbar {
  display: flex; justify-content: space-between; gap: 18px;
  border-top: 1px solid var(--line);
  padding: 13px 34px;
  font: 10px var(--mono); letter-spacing: 0.6px;
  color: var(--muted);
}
.statusbar #status { color: var(--ink-2); }
.statusbar-motto { color: var(--faint); font-family: var(--serif); font-style: italic; font-size: 12px; letter-spacing: 0; }

/* page heading — compressed: get to the chords fast ----------------------- */
.page-heading {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 24px; margin-bottom: 26px;
}
.eyebrow {
  font: 10px var(--mono); letter-spacing: 1.4px; text-transform: uppercase;
  color: var(--accent); margin: 0 0 9px;
}
.module-view .page-heading h2 {
  font: 400 30px/1.1 var(--serif); letter-spacing: -0.8px; margin: 0; color: var(--ink);
}
.page-heading h2 em { color: var(--muted); font-style: italic; }
.page-intro { color: var(--muted); font-size: 12.5px; margin: 12px 0 0; max-width: 46ch; }
.harmony-art { display: none; }  /* minimal chrome — the chords are the art */

.module-view h2 { margin-top: 0; font-weight: 600; }
.section-heading {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 12px; margin-bottom: 18px;
}
.section-heading h3 { font: 400 17px var(--serif); margin: 0; letter-spacing: -0.2px; color: var(--ink-2); }
.small-label, .nav-caption, .patterns-label {
  font: 10px var(--mono); letter-spacing: 1.1px; text-transform: uppercase; color: var(--faint);
  white-space: nowrap;
}

/* ------------------------------------------------------------------------- */
/* Chords — the console                                                       */
/* ------------------------------------------------------------------------- */
.row { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; margin: 0.75rem 0; }

.chord-workspace {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.35fr);
  border: 1px solid var(--line); border-radius: 12px;
  background: var(--bg-2); overflow: hidden;
}
.palette-panel, .progression-panel { min-width: 0; padding: 24px; }
.palette-panel { border-right: 1px solid var(--line); background: var(--bg); }

.key-row { margin: 0 0 18px; gap: 8px; }
.key-row label { flex: 1; display: flex; gap: 0.4rem; align-items: center; font: 10px var(--mono); letter-spacing: 1px; text-transform: uppercase; color: var(--muted); }
.key-row #tonic { margin-left: auto; min-width: 64px; }
.key-row #mode { min-width: 104px; }

/* palette — the chord buttons you build from */
.palette { display: grid; grid-template-columns: repeat(4, 1fr); gap: 7px; margin: 0 0 20px; }
.chip {
  display: inline-flex; align-items: center; gap: 0.4rem;
  border: 1px solid var(--line-2); border-radius: 999px;
  padding: 0.3rem 0.7rem; background: var(--bg-3);
}
.chip.add {
  position: relative; flex-direction: column; gap: 4px;
  border-radius: 8px; padding: 11px 5px 13px;
  font: 24px var(--serif); color: var(--ink);
  background: var(--bg-3); border-color: var(--line);
}
.chip.add:first-child { background: var(--bg-4); }
.chip.add:hover:not(:disabled) { background: var(--accent); color: #17110e; border-color: var(--accent); }
.chord-degree { font: 10px var(--mono); color: var(--muted); }
.chip.add:hover .chord-degree { color: #3a1c12; }
.chord-plus { position: absolute; right: 7px; top: 5px; font: 12px var(--font); color: var(--faint); }
.chip.add:hover .chord-plus { color: #3a1c12; }

/* patterns — a place to start */
.patterns { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin: 0 0 20px; }
.patterns-label { flex-basis: 100%; margin-bottom: 4px; }
.chip.pattern {
  cursor: pointer; border-radius: 7px; padding: 6px 10px; min-height: 30px;
  font-size: 11px; color: var(--ink-2);
}
.chip.pattern:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

#free-form { flex-wrap: nowrap; gap: 0; margin-bottom: 0; }
#free { flex: 1; min-width: 0; font-size: 12px; border-radius: 7px 0 0 7px; }
#free-form button { white-space: nowrap; font-size: 12px; border-left: 0; border-radius: 0 7px 7px 0; color: var(--accent); }
.palette-footnote { font: italic 12px var(--serif); color: var(--faint); margin: 14px 0 0; }

/* the progression — the hero. Big enough to read from across the room. */
.progression { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 10px; counter-reset: chord; }
.progression .empty {
  width: 100%; min-height: 260px; border: 1px dashed var(--line-2); border-radius: 10px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 24px; background: none;
}
.empty-staff {
  display: block; width: 150px; height: 66px; margin-bottom: 22px;
  font: italic 54px/64px var(--serif); color: var(--faint);
  background: repeating-linear-gradient(to bottom, transparent 0 12px, var(--line) 12px 13px);
}
.empty strong { font: 24px var(--serif); color: var(--ink-2); letter-spacing: -0.6px; }
.empty p { color: var(--muted); font-size: 12.5px; line-height: 1.8; margin: 11px 0 20px; }

.chip.prog {
  counter-increment: chord;
  flex: 1 1 130px; display: flex; flex-direction: column; align-items: stretch; gap: 10px;
  padding: 14px 14px 12px; border-radius: 10px;
  background: var(--bg-3); border: 1px solid var(--line-2);
}
.chip.prog::before { content: "0" counter(chord); font: 9px var(--mono); color: var(--faint); letter-spacing: 1px; }
.chip.prog .sym {
  font: 400 clamp(38px, 5.4vw, 60px)/1 var(--serif);
  color: var(--ink); letter-spacing: -1px; text-align: left;
}
.chip .ops { display: inline-flex; gap: 2px; justify-content: space-between; }
.chip .ops button {
  min-width: 26px; min-height: 28px; padding: 0 3px;
  background: transparent; border: 1px solid transparent; color: var(--muted); border-radius: 6px;
}
.chip .ops button:hover { color: var(--ink); background: var(--bg-4); border-color: transparent; }
.chip.prog.is-invalid { border-color: var(--bad); }
.chip.prog.is-invalid .sym { color: var(--bad); }
/* now playing — the amber stage light lands here */
.chip.prog.is-playing {
  border-color: var(--amber); background: var(--amber-soft);
  box-shadow: 0 0 0 1px var(--amber), 0 0 26px rgba(232, 178, 74, 0.28);
}
.chip.prog.is-playing .sym { color: var(--amber); }
.chip.prog .ops button.is-showing { color: var(--accent); border-color: var(--accent); }

/* practice loop / transport */
.practice { background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 15px; margin-top: 20px; }
.transport { gap: 12px; margin: 0; }
.transport label { display: flex; gap: 0.35rem; align-items: center; color: var(--muted); font: 10px var(--mono); letter-spacing: 0.5px; text-transform: uppercase; }
.transport label.check { gap: 0.3rem; }
.transport input[type="number"] { width: 54px; padding: 6px 8px; }
.transport select { padding: 6px 8px; }
#play-btn {
  background: var(--accent); color: #17110e; border-color: var(--accent);
  font-weight: 600; font-size: 12px; padding: 9px 16px; letter-spacing: 0.3px;
}
#play-btn:hover:not(:disabled) { background: var(--accent-2); border-color: var(--accent-2); }
#play-btn.is-playing { background: var(--amber); color: #1f1708; border-color: var(--amber); box-shadow: 0 0 20px rgba(232, 178, 74, 0.4); }

.save-row { gap: 8px; margin-top: 18px; }
.save-row input { flex: 1; min-width: 120px; font-size: 12px; }

/* exploration — scales + fretboard: "what to play" */
.exploration-panel { margin-top: 24px; border-top: 1px solid var(--line); padding-top: 24px; }
.explorer-empty { display: flex; align-items: center; gap: 28px; padding: 4px 0 8px; }
.explorer-empty p { font-size: 12.5px; line-height: 1.9; color: var(--muted); }
.fret-preview {
  width: 160px; flex-shrink: 0; height: 63px; position: relative; padding-top: 5px;
  border-left: 3px solid var(--line-2);
  background: repeating-linear-gradient(to right, transparent 0 30px, var(--line) 30px 31px);
}
.fret-preview i { display: block; height: 10px; border-top: 1px solid var(--line); }
.fret-preview::before, .fret-preview::after { content: ""; position: absolute; width: 10px; height: 10px; border-radius: 50%; background: var(--accent); left: 42px; top: 20px; }
.fret-preview::after { background: var(--amber); left: 104px; top: 40px; }

.summary { margin: 0.5rem 0; font-size: 12.5px; }
.summary .out { color: var(--bad); font-weight: 600; }
.suggestions { list-style: none; padding: 0; margin: 0.5rem 0; display: flex; flex-direction: column; gap: 10px; font-size: 12.5px; }
.suggestions li { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.suggestions .sym { font: 600 16px var(--serif); min-width: 3.4rem; color: var(--ink); }
.suggestions .arrow { color: var(--faint); }
.suggestions .scales { flex: 1 1 auto; display: flex; flex-wrap: wrap; gap: 6px; }
.suggestions .tag { font: 9px var(--mono); text-transform: uppercase; letter-spacing: 0.5px; color: var(--bad); border: 1px solid var(--bad); border-radius: 999px; padding: 1px 7px; }

.scale-pick {
  background: transparent; border: 1px solid var(--line-2); color: var(--ink-2);
  border-radius: 7px; padding: 5px 11px; min-height: 31px; font-size: 11px; cursor: pointer;
}
.scale-pick:hover { border-color: var(--accent); color: var(--accent); }
.scale-pick.is-active { background: var(--accent); color: #17110e; border-color: var(--accent); }

.hint { margin-top: 0.75rem; }

/* the fretboard — luminous, big, the centerpiece of "what to play" */
.fretboard-wrap { margin-top: 16px; padding: 18px; background: var(--bg); border: 1px solid var(--line); border-radius: 10px; }
.fretboard-wrap h4 { margin: 0 0 12px; font: 400 17px var(--serif); color: var(--ink-2); }
.on-guitar { font-weight: 400; font-size: 0.8rem; }
.fretboard { display: block; width: 100%; max-width: 100%; height: auto; background: var(--board); border: 1px solid var(--line-2); border-radius: 8px; padding: 12px; }

.fb-string { stroke: #565c66; stroke-width: 1; }
.fb-nut { stroke: #d7dae0; stroke-width: 4; }
.fb-fret { stroke: #3a404a; stroke-width: 2; }
.fb-inlay { fill: #363c46; }
.fb-dot.fb-scale { fill: #223037; stroke: var(--accent); stroke-width: 1.5; }
.fb-dot.fb-chord { fill: var(--accent); }
.fb-dot.fb-root { fill: var(--amber); }
.fb-fretnum { fill: var(--muted); font: 10px var(--font); text-anchor: middle; }
.fb-label { fill: #fff; stroke: #0a0c0f; stroke-width: 2.2; paint-order: stroke; font: 600 9px var(--font); text-anchor: middle; }

/* scale-degree colours — one per interval (1–7), a blue ramp that reads calm
   on the dark board: deepest at the root, lightening up the scale. */
.fb-deg-1 { fill: #2f6fd0; background: #2f6fd0; } /* root — deep blue, brightened for dark */
.fb-deg-2 { fill: #3f83db; background: #3f83db; }
.fb-deg-3 { fill: #5397e3; background: #5397e3; }
.fb-deg-4 { fill: #6faceb; background: #6faceb; }
.fb-deg-5 { fill: #8fc2f1; background: #8fc2f1; }
.fb-deg-6 { fill: #b2d7f6; background: #b2d7f6; }
.fb-deg-7 { fill: #d5eafb; background: #d5eafb; } /* 7th — pale blue */
/* a note in the current chord gets a bright ring around its degree colour */
.fb-dot.is-chord { stroke: #fbf8f0; stroke-width: 2.5; }

.legend { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-top: 12px; font-size: 11px; color: var(--muted); }
.legend .deg { display: inline-flex; align-items: center; gap: 0.25rem; }
.legend .deg.ring { margin-left: 0.4rem; }
.key-dot { display: inline-block; width: 12px; height: 12px; border-radius: 50%; vertical-align: middle; }
.key-dot.is-chord { background: #223037; border: 2px solid #fbf8f0; }
.key-dot.fb-scale { background: #223037; border: 1.5px solid var(--accent); }
.key-dot.fb-chord { background: var(--accent); }
.key-dot.fb-root { background: var(--amber); }

/* chord-shape box */
.chord-shape { margin: 16px 0; padding: 16px; background: var(--bg); border: 1px solid var(--line); border-radius: 10px; }
.chord-shape h4 { margin: 0 0 10px; font: 400 17px var(--serif); color: var(--ink-2); }
.chord-shape h4 .muted { font-size: 0.85rem; }
.chord-box { display: block; width: 150px; height: auto; background: var(--board); border: 1px solid var(--line-2); border-radius: 8px; padding: 6px 8px; }
.cb-pos { fill: var(--muted); font: 11px var(--font); text-anchor: end; }
.fb-marker { fill: var(--muted); font: 13px var(--font); text-anchor: middle; }
.fb-open { fill: none; stroke: var(--muted); stroke-width: 1.5; }
.shape-meta { margin: 0.6rem 0 0; font-size: 12px; color: var(--muted); }
.shape-meta .mk { display: inline-block; margin: 0 0.1rem 0 0.4rem; color: var(--ink-2); }

/* ------------------------------------------------------------------------- */
/* generic panels for the other modules (studio / tabs / effects)            */
/* ------------------------------------------------------------------------- */
.module-view:not(.chords) > .row,
.module-view:not(.chords) > form {
  padding: 20px; background: var(--bg-2); border: 1px solid var(--line); border-radius: 10px;
}
.module-view:not(.chords) h3 { font: 400 20px var(--serif); color: var(--ink-2); }
.module-view:not(.chords) .hint,
.rack > p {
  padding: 48px 24px; text-align: center; border: 1px dashed var(--line-2); border-radius: 10px;
  font: italic 18px var(--serif); color: var(--muted); background: var(--bg-2);
}

/* Studio — mic, meter, takes */
.studio .mic-row label { display: flex; gap: 0.4rem; align-items: center; color: var(--muted); }
#mic-btn { color: var(--accent); }
#mic-btn.is-open { background: var(--accent); color: #17110e; border-color: var(--accent); }
.mic-error { color: var(--bad); border: 1px solid var(--bad); border-radius: 8px; padding: 0.6rem 0.8rem; background: rgba(232, 119, 107, 0.08); }

.meter-wrap { display: flex; align-items: center; gap: 0.6rem; margin: 0.75rem 0; padding: 14px 20px; }
.meter { flex: 1; height: 10px; background: var(--board); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.meter-fill { height: 100%; width: 0; background: var(--good); transition: width 0.05s linear; }
.meter-fill.is-hot { background: var(--bad); }
.meter-label { color: var(--muted); font: 10px var(--mono); min-width: 3rem; }

.studio-transport { margin: 0.5rem 0; }
#rec-btn { color: var(--bad); font-weight: 600; }
#rec-btn.is-recording { background: var(--bad); color: #1c0d0b; border-color: var(--bad); box-shadow: 0 0 18px rgba(232, 119, 107, 0.4); }
#rec-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.studio-transport .latency { display: flex; gap: 0.35rem; align-items: center; color: var(--muted); font-size: 0.9rem; }
.studio-transport .latency input { width: 4rem; }
.overdub-tag { color: var(--amber); font-size: 0.85rem; }

.takes { list-style: none; padding: 0; margin: 0.75rem 0; display: flex; flex-direction: column; gap: 12px; }
.take { padding: 20px; background: var(--bg-2); border: 1px solid var(--line); border-radius: 10px; }
.take.is-backing { border-color: var(--amber); }
.take-head { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 0.4rem; }
.role-tag { font: 9px var(--mono); text-transform: uppercase; letter-spacing: 0.6px; color: var(--accent); border: 1px solid var(--line-2); border-radius: 999px; padding: 2px 8px; }
.take-name { flex: 1; }
.take .dur { font-size: 0.85rem; color: var(--muted); }
.take audio { width: 100%; margin: 0.35rem 0; }
.take-ops { margin: 0.4rem 0 0; gap: 0.4rem; }
.take-ops .saved { margin: 0; color: var(--good); }
.backing-btn { color: var(--amber); }
.backing-btn.is-on { background: var(--amber); color: #1f1708; border-color: var(--amber); }
.save-take { color: var(--accent); }
.riff-take { color: var(--amber); }
.drop-take { color: var(--muted); border-color: transparent; background: transparent; }
.drop-take:hover { color: var(--bad); border-color: transparent; background: transparent; }

.session-note { margin-top: 1.5rem; border-top: 1px solid var(--line); padding-top: 1rem; }
.session-note h3 { margin: 0 0 0.25rem; }
.session-note input[type="text"], .session-note textarea { width: 100%; margin: 0.4rem 0; }
.session-note textarea { padding: 12px; }
#save-session { color: var(--accent); }

/* Tabs — search + save */
.tabs #q { flex: 1 1 16rem; min-width: 0; }
.tabs #tab-search label { font-size: 11px; color: var(--muted); }
.tabs .error { color: var(--bad); }
.tab-results { list-style: none; margin: 0.75rem 0 0; padding: 0; }
.tab-result { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; padding: 18px 0; border-bottom: 1px solid var(--line); }
.tab-name { flex: 1 1 12rem; }
.tab-link { color: var(--accent); text-decoration: none; }
.tab-link:hover { text-decoration: underline; }
.save-tab { color: var(--accent); }
.save-tab.is-saved, .save-tab.is-saved:disabled {
  color: var(--good); border-color: transparent; background: transparent; opacity: 1; cursor: default;
}
.library-empty {
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 60px 24px; margin-top: 28px; text-align: center;
  background: repeating-linear-gradient(0deg, transparent, transparent 31px, var(--line) 31px, var(--line) 32px);
}
.library-empty p { font: 34px/1.2 var(--serif); color: var(--ink-2); letter-spacing: -1px; margin: 22px 0; }
.library-empty > .muted { display: inline-block; font-size: 12px; background: var(--bg); padding: 3px 10px; }

/* Effects — the rack */
.effects .source-row { align-items: center; gap: 14px; }
.file-btn {
  display: inline-flex; align-items: center; gap: 0.3rem; cursor: pointer;
  color: var(--accent); background: var(--bg-3); border: 1px solid var(--line-2); border-radius: 7px; padding: 8px 12px;
}
.file-btn:hover { border-color: var(--accent); }
.file-btn:focus-within { outline: 2px solid var(--accent); outline-offset: 3px; }
.file-btn input[type="file"] { position: absolute; width: 1px; height: 1px; opacity: 0; overflow: hidden; }
.effects .take-label { flex: 1 1 8rem; }
.effects .bypass { display: inline-flex; align-items: center; gap: 0.35rem; color: var(--muted); }

.rack { display: flex; flex-direction: column; gap: 12px; margin: 1rem 0; }
.fx-block { background: var(--bg-2); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 10px; padding: 20px; }
.fx-head { display: flex; align-items: center; gap: 0.6rem; border-bottom: 1px solid var(--line); padding-bottom: 14px; margin-bottom: 18px; }
.fx-name { flex: 1; font: 400 20px var(--serif); color: var(--ink-2); }
.fx-ops { display: inline-flex; gap: 0.2rem; }
.fx-ops button { padding: 0.05rem 0.45rem; background: transparent; border-color: transparent; color: var(--muted); }
.fx-ops button:hover:not(:disabled) { color: var(--ink); border-color: var(--line-2); background: var(--bg-3); }
.fx-ops button:disabled { opacity: 0.25; }
.fx-remove:hover:not(:disabled) { color: var(--bad) !important; }
.fx-params { display: flex; flex-wrap: wrap; gap: 20px 34px; }
.param { display: flex; flex-direction: column; gap: 5px; font: 10px var(--mono); letter-spacing: 0.5px; text-transform: uppercase; color: var(--muted); }
.param .pval { font: 16px var(--mono); color: var(--accent); text-transform: none; font-variant-numeric: tabular-nums; }
.param input[type="range"] { width: 9rem; }
.param select { text-transform: none; }
.add-row { margin-top: 0.5rem; }
.preset-bar { margin-top: 1.25rem; border-top: 1px solid var(--line); padding-top: 1rem; }
#preset-name { flex: 1 1 14rem; }
#save-preset { color: var(--accent); }

/* shared: the "save" family lights up on hover */
#save-btn, #save-session, #save-preset, .save-take, .save-tab { border-color: var(--line-2); }
#save-btn:hover:not(:disabled),
#save-session:hover:not(:disabled),
#save-preset:hover:not(:disabled),
.save-take:hover:not(:disabled),
.save-tab:hover:not(:disabled),
#play-btn:hover:not(:disabled) { background: var(--accent); color: #17110e; border-color: var(--accent); }

/* live-demo banner */
.demo-banner {
  position: relative; z-index: 5;
  background: linear-gradient(90deg, rgba(232, 88, 53, 0.14), rgba(20, 22, 26, 0.9));
  color: var(--ink-2); border-bottom: 1px solid var(--accent);
  padding: 9px 20px; font-size: 12px; text-align: center;
}
.demo-banner strong { color: var(--accent); }
.demo-banner a { color: var(--accent); }

/* ------------------------------------------------------------------------- */
/* responsive                                                                */
/* ------------------------------------------------------------------------- */
@media (min-width: 1500px) {
  .module-view .page-heading h2 { font-size: 34px; }
  .palette-panel, .progression-panel { padding: 30px; }
}
@media (max-width: 1000px) {
  main { padding: 26px 22px 36px; }
  .chord-workspace { grid-template-columns: 1fr; }
  .palette-panel { border-right: 0; border-bottom: 1px solid var(--line); }
  .palette { grid-template-columns: repeat(7, 1fr); }
}
@media (max-width: 720px) {
  .appbar { height: auto; flex-wrap: wrap; gap: 10px 14px; padding: 12px 16px; }
  .modules { order: 3; flex-basis: 100%; }
  .module { flex: 1; justify-content: center; }
  .module span:not(.nav-number) { font-size: 13px; }
  .appbar-status { margin-left: 0; }
  main { padding: 22px 16px 32px; }
  .page-heading { flex-direction: column; align-items: flex-start; }
  .module-view .page-heading h2 { font-size: clamp(24px, 7vw, 30px); }
  .palette { grid-template-columns: repeat(4, 1fr); }
  .chip.prog { flex-basis: calc(50% - 5px); }
  .chip.prog .sym { font-size: clamp(34px, 12vw, 48px); }
  .explorer-empty { flex-direction: column; align-items: flex-start; gap: 18px; }
  .fretboard-wrap { padding: 12px; overflow-x: auto; }
  .fretboard { min-width: 540px; }
  .statusbar-motto { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}