/* DEREVERB — Beatif Studio identity
   Dual theme (dark default + light). Pink→Blue gradient. Satoshi type.
   Theme driven by [data-theme] on <html>. Toggle: #bfThemeToggle. */

/* ---- Accent (theme-independent) ---- */
:root {
  --pink:        #FF4D9D;
  --purple:      #9B5CFF;
  --blue:        #5AA9FF;
  --grad:        linear-gradient(120deg, #FF4D9D, #9B5CFF);
  --accent-grad: var(--grad);
  --warn:        #E08A2B;
  --warn-bright: #E89B3C;
  --ok:          #3BC97F;
  --danger:      #FF4D4D;
  --led-red:     #FF5A4D;
  --radius-card: 18px;
  --radius-pill: 999px;
  --bg-tint-a:   rgba(255,77,157,0.06);
  --bg-tint-b:   rgba(90,169,255,0.08);
  --bg-tint-c:   rgba(90,169,255,0.05);
}

/* ---- Dark (default) ---- */
:root,
[data-theme="dark"] {
  color-scheme: dark;
  --bg:        #16161A;
  --surface:   rgba(255,255,255,0.055);
  --surface-2: rgba(255,255,255,0.09);
  --border:    rgba(255,255,255,0.09);
  --border-2:  rgba(255,255,255,0.16);
  --text:      #F2F0FA;
  --dim:       #9896A8;
  --mute:      #5C5A6A;

  --glass-fill:        var(--surface);
  --glass-fill-deep:   var(--surface-2);
  --glass-stroke:      rgba(255,255,255,0.10);
  --glass-stroke-dark: var(--border);
  --panel-edge:        var(--border-2);

  --ink:      var(--text);
  --ink-dim:  var(--text);
  --ink-mute: var(--dim);
  --ink-deep: var(--mute);
  --hairline: var(--border-2);
  --hairline-soft: var(--border);

  --blue-deep:  #5AA9FF;
  --blue-soft:  rgba(90,169,255,0.22);
  --blue-bg:    rgba(90,169,255,0.10);
  --blue-glow:  rgba(90,169,255,0.45);
  --pink-glow:  rgba(255,77,157,0.40);
  --bk-line:    #FFFFFF;

  --led-white: var(--blue); --led-white-glow: var(--blue-glow); --led-white-soft: rgba(90,169,255,0.14);
  --led-blue: var(--blue);  --led-blue-glow: var(--blue-glow);  --led-blue-soft: rgba(90,169,255,0.14);
  --led-cyan: var(--blue);  --led-amber: var(--pink);           --led-amber-glow: var(--pink-glow);
  --led-green: var(--blue);
}

/* ---- Light ---- */
[data-theme="light"] {
  color-scheme: light;
  --bg:        #F5F4FA;
  --surface:   rgba(255,255,255,0.72);
  --surface-2: rgba(255,255,255,0.85);
  --border:    rgba(20,20,30,0.07);
  --border-2:  rgba(20,20,30,0.12);
  --text:      #16161C;
  --dim:       #56565F;
  --mute:      #8C8C97;

  --glass-fill:        var(--surface);
  --glass-fill-deep:   var(--surface-2);
  --glass-stroke:      rgba(255,255,255,0.8);
  --glass-stroke-dark: var(--border-2);
  --panel-edge:        var(--border-2);

  --ink:      var(--text);
  --ink-dim:  var(--dim);
  --ink-mute: var(--mute);
  --ink-deep: var(--mute);
  --hairline: var(--border-2);
  --hairline-soft: var(--border);

  --blue-deep:  #3D8FE8;
  --blue-soft:  rgba(90,169,255,0.2);
  --blue-bg:    rgba(90,169,255,0.08);
  --blue-glow:  rgba(90,169,255,0.35);
  --pink-glow:  rgba(255,77,157,0.35);
  --bk-line:    #FF4DA0;

  --led-white: var(--blue); --led-white-glow: var(--blue-glow); --led-white-soft: rgba(90,169,255,0.12);
  --led-blue: var(--blue);  --led-blue-glow: var(--blue-glow);  --led-blue-soft: rgba(90,169,255,0.12);
  --led-cyan: var(--blue);  --led-amber: var(--pink);           --led-amber-glow: var(--pink-glow);
  --led-green: var(--blue);
}

* { box-sizing: border-box; }

/* ── FACE CARD (single source of truth — was duplicated in key-speed.astro) ── */
.face {
  font-family: 'Satoshi', system-ui, -apple-system, sans-serif;
  color: var(--ink);
  position: relative;
  border-radius: 22px;
  overflow: visible;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: 0 22px 48px -22px rgba(10,10,20,0.38), inset 0 1px 0 rgba(255,255,255,0.10);
  backdrop-filter: blur(28px) saturate(1.6);
  -webkit-backdrop-filter: blur(28px) saturate(1.6);
}
[data-theme="light"] .face {
  box-shadow: 0 30px 60px -24px rgba(20,22,40,0.18), inset 0 1px 0 rgba(255,255,255,0.8);
}

.face::before, .face::after { content: none; }
.face > * { position: relative; z-index: 1; }

/* ── HEADER ── */
.fp-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  background: transparent;
  position: relative;
}
.fp-header::after { display: none; }
.fp-back {
  display: inline-flex; align-items: center; gap: 6px;
  font: 600 13px/1 'Satoshi', sans-serif;
  color: var(--ink-dim);
  background: var(--glass-fill);
  border: 1px solid var(--panel-edge);
  padding: 10px 14px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.7), 0 2px 6px rgba(20,22,40,0.08);
}
.fp-back:hover { color: var(--ink); }

.fp-brand { display: flex; align-items: center; gap: 10px; }
.fp-brand-mark {
  width: 32px; height: 32px;
  border-radius: 10px;
  background:
    radial-gradient(60% 60% at 30% 25%, rgba(255,255,255,0.95) 0%, transparent 65%),
    var(--accent-grad);
  border: 1px solid rgba(255,255,255,0.6);
  display: grid; place-items: center;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.95),
    inset 0 -1px 0 rgba(0,0,0,0.1),
    0 4px 12px var(--pink-glow);
}
.fp-brand-mark::after {
  content: "";
  width: 2px; height: 14px; border-radius: 1px;
  background: #ffffff;
  box-shadow: 0 0 6px rgba(255,255,255,0.6);
}
.fp-brand-text {
  font: 800 13px/1 'Satoshi', sans-serif;
  color: var(--ink);
  letter-spacing: 0.04em;
}
/* ── MODE TAG (single source of truth — was duplicated in key-speed.astro) ── */
.fp-mode-tag {
  display: inline-flex; align-items: center; gap: 7px;
  font: 700 10px/1 'Satoshi', sans-serif;
  letter-spacing: 0.06em;
  color: #9B5CFF;
  background: rgba(155,92,255,0.12);
  border: 1px solid rgba(155,92,255,0.28);
  padding: 8px 12px;
  border-radius: 999px;
}
.fp-mode-tag .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: #9B5CFF;
  box-shadow: 0 0 6px rgba(155,92,255,0.55);
}
.fp-mode-tag.pro {
  color: #D6357F;
  background: rgba(255,77,157,0.10);
  border-color: rgba(255,77,157,0.25);
}
.fp-mode-tag.pro .dot { background: #FF4D9D; box-shadow: 0 0 6px rgba(255,77,157,0.35); }

/* ── TITLE ── */
.fp-title {
  text-align: center;
  padding: 8px 22px 6px;
}
.fp-title h1 {
  margin: 0;
  font: 800 38px/1 'Satoshi', sans-serif;
  letter-spacing: -0.025em;
  color: var(--ink);
  -webkit-background-clip: unset; background-clip: unset;
  -webkit-text-fill-color: currentColor;
  text-shadow: none;
  padding-left: 0;
}
.fp-title .pro-mark {
  -webkit-text-fill-color: var(--blue);
  color: var(--blue);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-left: 6px;
}
.fp-title p {
  margin: 8px 0 0;
  font: 600 12px/1 'Satoshi', sans-serif;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
  text-transform: none;
  padding-left: 0;
}

/* ── BODY ── */
.fp-body {
  padding: 18px 22px 22px;
  display: flex; flex-direction: column;
  gap: 18px;
}

/* ── DROPZONE ── */
.dropzone {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  background: var(--glass-fill);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px dashed rgba(90,169,255,0.4);
  border-radius: var(--radius-card);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.8), 0 4px 16px rgba(20,22,40,0.08);
}
.dropzone.has-file {
  border-style: solid;
  border-color: rgba(90,169,255,0.3);
  background: var(--glass-fill-deep);
}
.dropzone .file-ico {
  width: 48px; height: 48px;
  border-radius: 14px;
  background:
    radial-gradient(60% 50% at 30% 25%, rgba(255,255,255,0.9) 0%, transparent 70%),
    linear-gradient(135deg, var(--blue-soft) 0%, var(--blue-bg) 100%);
  border: 1px solid rgba(255,255,255,0.7);
  display: grid; place-items: center;
  color: var(--blue-deep);
  box-shadow: inset 0 1px 0 #ffffff, 0 4px 10px var(--blue-glow);
}
.dropzone .file-meta { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.dropzone .file-name {
  font: 700 15px/1.2 'Satoshi', sans-serif;
  color: var(--ink);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  letter-spacing: -0.01em;
}
.dropzone .file-sub {
  font: 500 12px/1.2 'Satoshi', sans-serif;
  color: var(--ink-mute);
  letter-spacing: 0.01em;
}
.dropzone .file-cta {
  font: 700 12px/1 'Satoshi', sans-serif;
  color: var(--blue-deep);
  padding: 10px 14px;
  border: 1px solid rgba(90,169,255,0.2);
  border-radius: var(--radius-pill);
  background: var(--glass-fill);
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.7);
}

/* ── KNOB STAGE ── */
.knob-stage {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 26px;
  padding: 28px 6px 18px;
}
.knob-flank { display: flex; flex-direction: column; gap: 12px; }
.knob-flank.l { align-items: flex-end; text-align: right; }
.knob-flank.r { align-items: flex-start; text-align: left; }
.vu {
  display: flex; flex-direction: column-reverse; gap: 3px;
  width: 18px; height: 160px;
  padding: 6px 4px;
  background: rgba(255,255,255,0.5);
  border: 1px solid var(--panel-edge);
  border-radius: 10px;
  box-shadow: inset 0 1px 2px rgba(20,22,40,0.12);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.vu .seg { flex: 1; border-radius: 1px; background: rgba(20,20,30,0.08); }
.vu .seg.on  { background: var(--blue-soft); box-shadow: 0 0 4px rgba(90,169,255,0.3); }
.vu .seg.mid { background: var(--blue); box-shadow: 0 0 6px var(--blue-glow); }
.vu .seg.hot { background: var(--led-red); box-shadow: 0 0 7px rgba(255,90,77,0.4); }
.vu-label {
  font: 700 10px/1 'Satoshi', sans-serif;
  letter-spacing: 0.06em; color: var(--ink-mute); text-transform: uppercase;
}
.flank-stat { display: flex; flex-direction: column; font-family: 'Satoshi', sans-serif; }
.flank-stat .v { font-size: 20px; font-weight: 800; color: var(--ink); letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.flank-stat .l { font-size: 11px; color: var(--ink-mute); letter-spacing: 0.04em; text-transform: uppercase; margin-top: 3px; font-weight: 600; }

.knob-wrap { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.knob-label {
  font: 700 11px/1 'Satoshi', sans-serif;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.knob-value {
  display: inline-flex; align-items: baseline; gap: 4px;
  font-family: 'Satoshi', sans-serif;
}
.knob-value .num {
  font-size: 44px; font-weight: 800; color: var(--ink); letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}
.knob-value .unit { font-size: 18px; color: var(--ink-mute); letter-spacing: -0.02em; font-weight: 700; }

/* ── WAVEFORM PANELS ── */
.wave-grid { display: grid; gap: 10px; }
.wave {
  position: relative;
  background: var(--glass-fill);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: 14px;
  padding: 12px 14px 14px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.8), 0 4px 14px rgba(20,22,40,0.08);
}
.wave-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.wave-head .name {
  font: 700 11px/1 'Satoshi', sans-serif;
  letter-spacing: 0.04em; color: var(--ink-dim);
  display: inline-flex; align-items: center; gap: 8px;
}
.wave-head .name .led { width: 7px; height: 7px; border-radius: 50%; background: #D6D6E0; }
.wave-head .name.on .led { background: var(--blue); box-shadow: 0 0 6px var(--blue-glow); }
.wave-head .name.result.on .led { background: var(--blue); box-shadow: 0 0 6px var(--blue-glow); }
.wave-head .time {
  font: 600 11px/1 'Satoshi', sans-serif;
  color: var(--ink-mute); letter-spacing: 0.01em;
  font-variant-numeric: tabular-nums;
}
.wave svg { display: block; width: 100%; height: 60px; }
.wave.empty {
  height: 80px; display: grid; place-items: center;
  color: var(--ink-mute);
  font: 600 12px/1 'Satoshi', sans-serif;
  letter-spacing: 0.02em;
}

/* ── PROGRESS ── */
.progress {
  position: relative;
  height: 8px;
  background: rgba(20,20,30,0.10);
  border-radius: 999px;
  overflow: hidden;
  box-shadow: inset 0 1px 2px rgba(20,22,40,0.12);
}
.progress > i {
  position: absolute; left: 0; top: 0; bottom: 0;
  background: linear-gradient(90deg, var(--blue) 0%, #FF4D9D 100%);
  box-shadow: 0 0 10px var(--blue-glow);
  border-radius: inherit;
  transition: width 0.3s ease;
}
.progress-row {
  display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: center;
  font: 600 12px/1 'Satoshi', sans-serif;
  color: var(--ink-dim);
}

/* ── ACTION ── */
.action-row { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: center; }

/* ── PRIMARY BUTTON (single source of truth — was duplicated in key-speed.astro) ── */
.btn-primary {
  flex: 1;
  appearance: none; border: none; cursor: pointer;
  font: 700 16px/1 'Satoshi', sans-serif;
  letter-spacing: -0.01em;
  color: #ffffff;
  background: var(--grad);
  border-radius: 16px;
  padding: 18px 24px;
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  box-shadow: inset 0 1.5px 0 rgba(255,255,255,0.35), 0 8px 22px -8px var(--pink-glow);
  transition: transform 0.08s ease, box-shadow 0.15s ease, filter 0.15s;
}
.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  filter: saturate(1.1) brightness(1.04);
  box-shadow: inset 0 1.5px 0 rgba(255,255,255,0.4), 0 14px 30px -8px var(--pink-glow);
}
.btn-primary:active:not(:disabled) { transform: translateY(1px); }
@keyframes btn-breathe {
  0%, 100% { box-shadow: inset 0 1.5px 0 rgba(255,255,255,0.40), 0 4px 22px -6px rgba(155,92,255,0.32); }
  50%      { box-shadow: inset 0 1.5px 0 rgba(255,255,255,0.40), 0 6px 26px -4px rgba(255,77,157,0.38); }
}
.btn-primary:disabled {
  opacity: 1; cursor: default;
  background: rgba(155,92,255,0.12);
  border: 1px solid rgba(155,92,255,0.28);
  color: var(--text);
  animation: btn-breathe 3s ease-in-out infinite;
}
[data-theme="dark"] .btn-primary:not(:disabled):not(.is-busy) {
  background: rgba(155,92,255,0.18);
  backdrop-filter: blur(20px) saturate(1.6);
  -webkit-backdrop-filter: blur(20px) saturate(1.6);
  border: 1px solid rgba(155,92,255,0.38);
  box-shadow: inset 0 1.5px 0 rgba(255,255,255,0.50), inset 0 -1px 0 rgba(100,30,200,0.20), 0 4px 22px -6px rgba(155,92,255,0.40);
}
[data-theme="dark"] .btn-primary:not(:disabled):not(.is-busy):hover {
  background: rgba(155,92,255,0.28);
  filter: none;
  transform: translateY(-1px);
  border-color: rgba(155,92,255,0.58);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.20), 0 10px 28px -6px rgba(255,77,157,0.52), 0 4px 14px -4px rgba(155,92,255,0.42);
}
.btn-primary.is-busy {
  background: rgba(128,128,140,0.25);
  color: var(--dim);
  box-shadow: none;
}
.btn-primary .ico {
  display: inline-grid; place-items: center;
  width: 24px; height: 24px; border-radius: 50%;
  background: rgba(255,255,255,0.22);
  color: #ffffff;
}
.btn-primary.is-busy .ico { background: rgba(128,128,140,0.3); color: var(--dim); }

.btn-ghost {
  appearance: none; cursor: pointer;
  font: 700 13px/1 'Satoshi', sans-serif;
  color: var(--ink-dim);
  background: var(--glass-fill);
  border: 1px solid var(--panel-edge);
  border-radius: var(--radius-pill);
  padding: 12px 16px;
  display: inline-flex; align-items: center; gap: 8px;
}
.btn-ghost:hover { color: var(--ink); }
.btn-ghost.is-on {
  color: #ffffff;
  background: var(--blue);
  border-color: var(--blue);
  box-shadow: 0 4px 12px var(--blue-glow);
}

/* A/B compare cluster */
.ab-row {
  display: flex; gap: 6px; align-items: center;
  padding: 6px;
  background: var(--glass-fill);
  border: 1px solid var(--panel-edge);
  border-radius: var(--radius-pill);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.6);
}
.ab-row .ab-label {
  font: 800 11px/1 'Satoshi', sans-serif;
  color: var(--ink-mute);
  padding: 0 8px 0 8px;
}
.ab-btn {
  appearance: none; cursor: pointer;
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.85);
  border: 1px solid var(--panel-edge);
  color: var(--ink-dim);
  box-shadow: inset 0 1px 0 #ffffff, 0 2px 4px rgba(20,22,40,0.1);
  position: relative;
}
.ab-btn:hover { color: var(--ink); }
.ab-btn.is-on {
  background: var(--blue);
  color: #ffffff;
  border-color: var(--blue);
  box-shadow: 0 4px 14px var(--blue-glow), inset 0 1px 0 rgba(255,255,255,0.3);
}

/* ── STATS ── */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.stat {
  background: var(--glass-fill);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.7);
  border-radius: 14px;
  padding: 16px 18px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.8), 0 4px 14px rgba(20,22,40,0.08);
  position: relative; overflow: hidden;
}
.stat .lbl {
  font: 700 11px/1 'Satoshi', sans-serif;
  letter-spacing: 0.02em; color: var(--ink-mute);
}
.stat .v { display: flex; align-items: baseline; gap: 6px; margin-top: 10px; font-family: 'Satoshi', sans-serif; }
.stat .v .n {
  font-size: 34px; font-weight: 800; color: var(--ink);
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}
.stat .v .u { font-size: 13px; color: var(--ink-mute); letter-spacing: -0.01em; font-weight: 700; }
.stat.dim { opacity: 0.4; }
.stat .check {
  width: 28px; height: 28px;
  border-radius: 50%;
  background:
    radial-gradient(60% 50% at 30% 25%, #ffffff 0%, transparent 70%),
    var(--accent-grad);
  color: #ffffff;
  display: grid; place-items: center;
  box-shadow: 0 4px 10px var(--pink-glow), inset 0 1px 0 rgba(255,255,255,0.5);
  margin-top: 6px;
}

/* ── BANNERS ── */
.banner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 22px 22px;
  background:
    radial-gradient(60% 90% at 0% 50%, rgba(90,169,255,0.4) 0%, transparent 60%),
    linear-gradient(135deg, var(--blue-bg) 0%, #F2F3FB 100%);
  border: 1px solid rgba(90,169,255,0.25);
  border-radius: 18px;
  position: relative; overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.8), 0 6px 20px rgba(20,22,40,0.1);
}
.banner::after {
  content: "";
  position: absolute; right: -40px; top: -40px;
  width: 220px; height: 220px;
  background: radial-gradient(circle, rgba(90,169,255,0.18), transparent 70%);
  pointer-events: none;
}
.banner h3 { margin: 0; font: 800 17px/1.3 'Satoshi', sans-serif; letter-spacing: -0.02em; color: var(--ink); }
.banner p { margin: 6px 0 0; font: 500 13px/1.5 'Satoshi', sans-serif; color: var(--ink-dim); letter-spacing: -0.005em; }
.banner .price {
  font: 800 14px/1 'Satoshi', sans-serif;
  color: var(--blue-deep);
  letter-spacing: -0.02em;
  margin-left: 6px;
  font-variant-numeric: tabular-nums;
}
.banner .cta {
  position: relative; z-index: 1;
  font: 800 14px/1 'Satoshi', sans-serif;
  letter-spacing: -0.01em;
  color: #ffffff;
  background: var(--accent-grad);
  border: none;
  border-radius: var(--radius-pill);
  padding: 14px 22px;
  cursor: pointer;
  box-shadow: 0 6px 16px var(--pink-glow), inset 0 1px 0 rgba(255,255,255,0.3);
}

.banner.vst {
  background:
    radial-gradient(60% 90% at 100% 50%, rgba(90,169,255,0.45) 0%, transparent 60%),
    linear-gradient(135deg, #F7F7FC 0%, #ECEDF6 100%);
  border: 1px solid var(--panel-edge);
}
.banner.vst::after { display: none; }
.banner.vst h3 { display: flex; align-items: center; gap: 10px; }
.banner.vst .ribbon {
  font: 800 10px/1 'Satoshi', sans-serif;
  letter-spacing: 0.04em; color: var(--blue-deep);
  padding: 6px 9px; border: 1px solid rgba(90,169,255,0.3);
  border-radius: 6px;
  background: rgba(255,255,255,0.6);
}
.banner.vst .platforms { display: flex; gap: 8px; }
.banner.vst .platforms .pill {
  font: 700 12px/1 'Satoshi', sans-serif;
  letter-spacing: -0.01em;
  color: var(--ink);
  background: var(--glass-fill-deep);
  border: 1px solid var(--panel-edge);
  padding: 12px 16px;
  border-radius: 12px;
  display: inline-flex; align-items: center; gap: 8px;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.8), 0 2px 6px rgba(20,22,40,0.08);
}
.banner.vst .platforms .pill:hover {
  border-color: rgba(90,169,255,0.35);
  color: var(--blue-deep);
}

/* ── PRO chain ── */
.chain {
  display: flex; align-items: stretch; gap: 6px;
  padding: 14px;
  background: var(--glass-fill);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: 14px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.7), 0 4px 14px rgba(20,22,40,0.08);
}
.chain-link {
  flex: 1;
  display: flex; flex-direction: column; gap: 8px;
  padding: 12px 10px;
  background: rgba(255,255,255,0.7);
  border-radius: 10px;
  border: 1px solid var(--panel-edge);
  position: relative; min-width: 0;
  box-shadow: inset 0 1px 0 #ffffff;
}
.chain-link .lbl {
  font: 800 10px/1 'Satoshi', sans-serif;
  letter-spacing: 0.02em; color: var(--ink-dim);
  display: flex; align-items: center; justify-content: space-between;
}
.chain-link .lbl b { color: var(--ink); font-weight: 800; }
.chain-link .pct { color: var(--blue-deep); font-variant-numeric: tabular-nums; }
.chain-link .meter {
  position: relative; height: 5px;
  background: rgba(20,20,30,0.10);
  border-radius: 999px; overflow: hidden;
}
.chain-link .meter > i {
  position: absolute; left: 0; top: 0; bottom: 0;
  background: linear-gradient(90deg, var(--blue) 0%, #FF4D9D 100%);
  box-shadow: 0 0 6px var(--blue-glow);
  border-radius: inherit;
  transition: width 0.25s ease;
}
.chain-arrow { align-self: center; color: var(--ink-deep); font-size: 10px; }

/* ── PRO detail accordion ── */
.detail-toggle {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px;
  background: var(--glass-fill);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--panel-edge);
  border-radius: 14px;
  cursor: pointer;
  font: 700 13px/1 'Satoshi', sans-serif;
  color: var(--ink);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.7);
}
.detail-toggle .left { display: inline-flex; align-items: center; gap: 10px; }
.detail-toggle .lbl-mono {
  font: 800 11px/1 'Satoshi', sans-serif;
  letter-spacing: 0.02em; color: var(--blue-deep);
  background: var(--blue-bg);
  padding: 5px 8px; border-radius: 6px;
}
.detail-toggle .chev { color: var(--ink-mute); transition: transform 0.15s ease; }
.detail-toggle.open .chev { transform: rotate(180deg); }

.detail-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px;
  padding: 14px;
  background: var(--glass-fill);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: 14px;
}
.fader {
  display: flex; flex-direction: column; gap: 10px;
  padding: 12px 14px;
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--panel-edge);
  border-radius: 12px;
  box-shadow: inset 0 1px 0 #ffffff;
}
.fader .row { display: flex; align-items: baseline; justify-content: space-between; }
.fader .name {
  font: 800 11px/1 'Satoshi', sans-serif;
  color: var(--ink-dim);
}
.fader .v {
  font: 800 14px/1 'Satoshi', sans-serif;
  color: var(--blue-deep); letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.fader .track {
  position: relative; height: 8px;
  background: rgba(20,20,30,0.10);
  border-radius: 999px;
  cursor: pointer;
  box-shadow: inset 0 1px 2px rgba(20,22,40,0.12);
}
.fader .track > i {
  position: absolute; left: 0; top: 0; bottom: 0;
  background: linear-gradient(90deg, var(--blue) 0%, #FF4D9D 100%);
  box-shadow: 0 0 6px var(--blue-glow);
  border-radius: inherit;
}
.fader .track > b {
  position: absolute; top: 50%; transform: translate(-50%, -50%);
  width: 20px; height: 20px; border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 2px 6px rgba(45,110,210,0.25), inset 0 1px 0 #ffffff, 0 0 0 1px rgba(90,169,255,0.15);
}

/* ── STATE SWITCHER / FOOT / AB-LABELS ── */
.state-switcher {
  display: flex; gap: 2px; align-self: center;
  padding: 4px;
  background: var(--glass-fill);
  border: 1px solid var(--panel-edge);
  border-radius: 999px;
  margin-top: -4px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.6);
}
.state-chip {
  appearance: none; cursor: pointer;
  font-family: 'Satoshi', sans-serif;
  font-size: 11px; font-weight: 700; letter-spacing: 0;
  padding: 7px 12px;
  background: transparent;
  color: var(--ink-mute);
  border: none; border-radius: 999px;
  transition: all 0.12s;
}
.state-chip.is-on {
  background: #ffffff;
  color: var(--blue-deep);
  box-shadow: 0 2px 6px rgba(20,22,40,0.18);
}
.fp-foot {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 4px;
  font-family: 'Satoshi', sans-serif; font-size: 11px; font-weight: 600;
  letter-spacing: 0; color: var(--ink-mute);
}
.ab-labels {
  display: flex; justify-content: flex-end; gap: 8px;
  font-family: 'Satoshi', sans-serif; font-size: 10px; font-weight: 700;
  color: var(--ink-mute); letter-spacing: 0;
  margin-top: -8px;
}

/* ── Knob SVG generic classes ── */
.knob { position: relative; display: inline-block; }
.knob-svg { display: block; }
.knob-svg .label-mark { fill: var(--ink-mute); font: 700 10px 'Satoshi', sans-serif; letter-spacing: 0.04em; }

/* ── bk-dome theme visibility ── */
.bk-dome--dark  { display: none; }
.bk-dome--light { display: block; }
[data-theme="dark"] .bk-dome--light { display: none; }
[data-theme="dark"] .bk-dome--dark  { display: block; }

/* ── Theme toggle button ── */
.bf-theme {
  appearance: none; cursor: pointer; border: none;
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--surface); color: var(--text);
  display: grid; place-items: center;
  transition: background 0.12s;
  flex-shrink: 0;
}
.bf-theme:hover { background: var(--surface-2); }
.bf-theme svg { width: 18px; height: 18px; }
.bf-theme .moon { display: none; }
[data-theme="dark"] .bf-theme .sun  { display: none; }
[data-theme="dark"] .bf-theme .moon { display: block; }

/* ── bk-arc theme styles (vocal-cleaner 동일) ── */
.bk-arc-glow { filter: blur(1.4px); opacity: 0.55; }
[data-theme="dark"] .bk-arc-glow { opacity: 0.7; }
.bk-arc-core { filter: drop-shadow(0 0 0.8px rgba(255,255,255,0.5)); }
[data-theme="dark"] .bk-arc-core { filter: drop-shadow(0 0 1.2px rgba(168,108,240,0.7)); }
.bk-dot { filter: drop-shadow(0 0 1.2px rgba(255,77,157,0.9)); }

/* ── RESPONSIVE ── */
@media (max-width: 720px) {
  .fp-title h1 { font-size: 30px; }
  .knob-stage { grid-template-columns: 1fr; }
  .knob-flank.l, .knob-flank.r { flex-direction: row; align-items: center; justify-content: center; gap: 18px; text-align: left; }
  .vu { width: 120px; height: 14px; flex-direction: row; }
  .stats { grid-template-columns: 1fr; }
  .chain { flex-direction: column; }
  .chain-arrow { transform: rotate(90deg); }
  .detail-grid { grid-template-columns: 1fr 1fr; }
  .action-row { grid-template-columns: 1fr; }
}
