/* ==========================================================================
   little simple looper - Stylesheet
   Aesthetic: Minimalist, Tactile Paper & Graphite Pencil
   ========================================================================== */

:root {
  /* Paper Palette */
  --paper-bg: #f9f7f2;
  --header-bg: #ece7dc;          /* Slightly darker tactile paper for header */
  --paper-card: rgba(246, 243, 236, 0.85);
  --paper-border: rgba(100, 95, 88, 0.22);
  --paper-border-focus: rgba(60, 56, 52, 0.45);
  
  /* Graphite Palette */
  --graphite-dark: #23211f;       /* Dark 4B pencil */
  --graphite-medium: #45423e;     /* Medium 2B pencil */
  --graphite-light: #736d64;      /* Light HB pencil */
  --graphite-faint: #b8b2a7;      /* Faint 2H guide line */
  --graphite-hover: rgba(50, 47, 44, 0.08);
  --graphite-active: rgba(50, 47, 44, 0.16);

  /* Pencil Accent Colors */
  --pencil-red: #bd3a33;          /* Red Caran d'Ache pencil for REC */
  --pencil-red-bg: rgba(189, 58, 51, 0.08);
  --pencil-red-border: rgba(189, 58, 51, 0.35);
  --pencil-gold: #c78932;         /* Amber pencil for Armed/Sync state */
  --pencil-green: #3f7e58;        /* Soft green for Playing */

  /* Dimensions & Typography */
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Georgia", "Cambria", "Times New Roman", serif;
  --font-mono: "SF Mono", "Menlo", "Consolas", monospace;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-pill: 9999px;
}

/* Dark Theme - Tactile Charcoal Slate (Softened 15% for optimal contrast) */
[data-theme="dark"] {
  --paper-bg: #403d38;
  --header-bg: #35312d;          /* Slightly darker charcoal for header */
  --paper-card: rgba(72, 68, 63, 0.88);
  --paper-border: rgba(230, 225, 215, 0.18);
  --paper-border-focus: rgba(240, 235, 225, 0.38);

  --graphite-dark: #f0ede6;       /* White chalk / crisp paper */
  --graphite-medium: #c5beb3;     /* Silver graphite */
  --graphite-light: #948d82;      /* Medium pencil */
  --graphite-faint: #5a544c;      /* Faint guide lines */
  --graphite-hover: rgba(255, 255, 255, 0.08);
  --graphite-active: rgba(255, 255, 255, 0.16);

  --pencil-red: #e04a42;
  --pencil-red-bg: rgba(224, 74, 66, 0.18);
  --pencil-red-border: rgba(224, 74, 66, 0.45);
  --pencil-gold: #e2a042;
  --pencil-green: #56a877;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-select: none;
}

html, body {
  width: 100%;
  height: 100%;
  height: 100dvh;
  overflow: hidden;
  background-color: var(--paper-bg);
  color: var(--graphite-dark);
  font-family: var(--font-main);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --------------------------------------------------------------------------
   Paper Grain Background Simulation
   -------------------------------------------------------------------------- */
#paper-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.55;
  mix-blend-mode: multiply;
}

[data-theme="dark"] #paper-overlay {
  opacity: 0.22;
  mix-blend-mode: screen;
}

/* --------------------------------------------------------------------------
   Main App Container Grid (Stage Center fills 100% of viewport width)
   -------------------------------------------------------------------------- */
#app {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  height: 100dvh;
  max-width: 100vw;
  padding: 0;
  z-index: 10;
  justify-content: space-between;
  overflow: hidden;
}

.scroll-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  width: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 0;
  -webkit-overflow-scrolling: touch;
}

/* --------------------------------------------------------------------------
   Top Bar
   -------------------------------------------------------------------------- */
.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  background: transparent !important;
  border-bottom: none !important;
  box-shadow: none !important;
  gap: 20px;
  flex-shrink: 0;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.brand h1 {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--graphite-dark);
  position: relative;
  display: inline-block;
}

/* Two red record dots inside "looper" representing twin rec buttons / eyes */
.logo-o {
  position: relative;
  display: inline-block;
  line-height: 1;
}

.logo-o::after {
  content: '';
  position: absolute;
  top: 60%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 0.17em;
  height: 0.17em;
  background-color: var(--pencil-red, #bd3a33);
  border-radius: 50%;
  pointer-events: none;
}

[data-theme="dark"] .logo-o::after {
  background-color: var(--pencil-red, #e04a42);
}

.version-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--graphite-medium);
  background: none;
  border: none;
  text-decoration: underline;
  text-underline-offset: 2px;
  padding: 0 2px;
  cursor: pointer;
  transition: color 0.15s ease;
  line-height: 1.4;
  margin-left: 2px;
  align-self: center;
}

.version-badge:hover {
  background: none;
  border: none;
  color: var(--graphite-dark);
  text-decoration: underline;
}

.device-selectors {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-left: auto;
  justify-content: flex-end;
}

.header-controls-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.device-group {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.45);
  border: 1px solid var(--paper-border);
  border-radius: var(--radius-md);
  padding: 3px 8px;
  min-height: 25px;
  box-sizing: border-box;
  transition: border-color 0.2s, background-color 0.2s;
}

.device-group:hover, .device-group:focus-within {
  border-color: var(--paper-border-focus);
  background: rgba(255, 255, 255, 0.75);
}

.device-icon {
  width: 14px;
  height: 14px;
  stroke: var(--graphite-medium);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.device-select {
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: none;
  font-family: var(--font-main);
  font-size: 0.78rem;
  color: var(--graphite-dark);
  cursor: pointer;
  outline: none;
  width: 80px;
  max-width: 80px;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  padding-right: 14px;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="10" height="6" viewBox="0 0 10 6"><path d="M1 1l4 4 4-4" fill="none" stroke="%23736d64" stroke-width="1.2" stroke-linecap="round"/></svg>');
  background-repeat: no-repeat;
  background-position: right center;
}

.device-select.track-count-select {
  width: auto;
  max-width: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.device-select option {
  background: var(--paper-bg);
  color: var(--graphite-dark);
}

/* Mic monitor toggle & gain */
.mic-extra-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: flex-end;
}

.btn-soft {
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--paper-border);
  color: var(--graphite-medium);
  font-size: 0.75rem;
  padding: 3px 9px;
  min-height: 25px;
  box-sizing: border-box;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.15s ease;
  font-family: var(--font-main);
}

.btn-soft.btn-icon-only {
  padding: 3px 8px;
  min-width: 30px;
  min-height: 25px;
  box-sizing: border-box;
  justify-content: center;
}

.btn-soft:hover {
  background: rgba(255, 255, 255, 0.9);
  border-color: var(--paper-border-focus);
  color: var(--graphite-dark);
}

.btn-soft.active {
  background: var(--graphite-dark);
  color: #fff;
  border-color: var(--graphite-dark);
}

.btn-soft.active svg {
  stroke: #fff;
}

.top-bar .btn-soft,
.top-bar .device-group {
  min-height: 25px;
  box-sizing: border-box;
}

/* --------------------------------------------------------------------------
   Center Stage: Circular Loop Tracks (4, 6, 8, or 12 Tracks)
   -------------------------------------------------------------------------- */
.stage-center {
  flex: 1;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 16px 0 10px 0;
  min-height: 0;
  width: 100%;
  max-width: 100vw;
  box-sizing: border-box;
  touch-action: none;
}

.stage-center.is-panning {
  cursor: grabbing !important;
  user-select: none;
}

.stage-center.is-panning * {
  cursor: grabbing !important;
}

/* Giant background microphone waveform across the entire stage */
.board-bg-waveform {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* Board Top Controls: Reverb, Scale, Voicings buttons centered at top */
.board-top-controls {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1300px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  padding: 0 20px 8px 20px;
  box-sizing: border-box;
}

#btn-board-scale {
  display: none !important;
}

.btn-board-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 27px;
  padding: 0 10px;
  font-family: var(--font-main);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--graphite-dark);
  background: var(--paper-panel);
  border: 1px solid var(--paper-border-focus);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}

.btn-board-pill:hover {
  background: #ffffff;
  border-color: #ea580c;
  color: #ea580c;
}

[data-theme="dark"] .btn-board-pill {
  background: #23201d;
  border-color: #3d3934;
  color: #ece8e1;
}

[data-theme="dark"] .btn-board-pill:hover {
  background: #2b2723;
  border-color: #ea580c;
  color: #ea580c;
}

#board-scale-badge {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.72rem;
  background: rgba(0, 0, 0, 0.06);
  padding: 1px 5px;
  border-radius: 4px;
}

[data-theme="dark"] #board-scale-badge {
  background: rgba(255, 255, 255, 0.1);
}

/* --------------------------------------------------------------------------
   Center Stage Board: Honeycomb Layout (Colméia) with Absolute Positioning
   -------------------------------------------------------------------------- */
.looper-grid {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  min-height: 520px;
  margin: 0 auto;
  overflow: visible;
  display: block;
  transform-origin: 0 0;
}

/* Add Track Slot Component */
.add-track-cell {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  transition: transform 0.45s cubic-bezier(0.2, 0.9, 0.3, 1), opacity 0.25s ease;
}

.add-track-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

/* Tamanho do circulo do add track: 30% do wrapper (exatamente o diâmetro do círculo interno das tracks) */
/* Hover e eventos limitados estritamente ao botão/círculo (não ao container) */
.btn-add-track {
  width: 30%;
  height: 30%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  border: 1.5px solid transparent;
  background: transparent;
  color: rgba(115, 109, 100, 0.45); /* Mesma cor do '+' no centro das tracks */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  outline: none;
  touch-action: none;
  pointer-events: auto; /* Apenas o círculo recebe eventos e hover */
  transition: all 0.22s cubic-bezier(0.2, 0.9, 0.3, 1);
  box-shadow: none;
  position: relative;
}

[data-theme="dark"] .btn-add-track {
  background: transparent;
  border-color: transparent;
  color: #ffffff;
}

[data-theme="dark"] .add-track-plus-icon {
  color: #ffffff;
}

/* Background, borda e label SÓ aparecem durante o hover no círculo */
.btn-add-track:hover {
  border-style: solid;
  border-color: #ea580c;
  color: #ea580c;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 14px rgba(234, 88, 12, 0.15);
  transform: scale(1.05);
}

.btn-add-track:active {
  transform: scale(0.96);
  background: rgba(234, 88, 12, 0.08);
}

.btn-add-track.is-dragging {
  cursor: grabbing;
}

.add-track-plus-icon {
  stroke: currentColor;
  transition: transform 0.2s ease, stroke 0.2s ease;
  flex-shrink: 0;
}

.btn-add-track:hover .add-track-plus-icon {
  transform: rotate(90deg);
}

.add-track-label {
  position: absolute;
  top: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-main);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.18s ease, visibility 0.18s ease;
  color: #ea580c;
  background: rgba(255, 255, 255, 0.95);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(234, 88, 12, 0.25);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.btn-add-track:hover .add-track-label {
  opacity: 1;
  visibility: visible;
}

.add-track-chip-pro {
  font-size: 0.58rem;
  font-weight: 700;
  padding: 1px 4px;
  border-radius: 3px;
  background: #ea580c;
  color: #ffffff;
  margin-left: 3px;
  letter-spacing: 0.04em;
}

[data-theme="dark"] .btn-add-track:hover {
  background: rgba(45, 41, 37, 0.95);
  border-color: #f97316;
  color: #f97316;
  box-shadow: 0 4px 14px rgba(249, 115, 22, 0.2);
}

[data-theme="dark"] .add-track-label {
  background: rgba(45, 41, 37, 0.95);
  color: #f97316;
  border-color: rgba(249, 115, 22, 0.35);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

.looper-track-cell {
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: absolute;
  top: 0;
  left: 0;
  margin: 0;
  user-select: none;
  touch-action: none;
  transition: transform 0.45s cubic-bezier(0.2, 0.9, 0.3, 1), opacity 0.3s ease;
  z-index: 2;
}

.looper-track-cell.is-dragging {
  transition: none !important;
  z-index: 60 !important;
  cursor: grabbing !important;
}

.canvas-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: default;
  touch-action: none;
}

.looper-canvas {
  pointer-events: none;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

.track-hit-area {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
  touch-action: none;
}

.track-hit-area > path {
  fill: transparent;
  pointer-events: fill;
}

/* Clear brush positioned at lower-right corner of track cell */
.btn-track-clear {
  position: absolute;
  left: calc(50% + 30.5%);
  top: calc(53.2% + 29.5%);
  transform: translate(-50%, -50%) scale(0.85);
  z-index: 6;
  background: #ffffff;
  border: 1px solid var(--paper-border-focus);
  color: var(--graphite-dark);
  border-radius: 50%;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease, background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  touch-action: manipulation;
  padding: 0;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.btn-track-clear:hover {
  background: #ffffff;
  border-color: #ea580c;
  color: #ea580c;
  transform: translate(-50%, -50%) scale(1.08);
}

.btn-track-clear svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Visible when track has completed a recording */
.btn-track-clear.visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}

/* Remove track button (x) positioned at upper-right corner of track cell when muted */
.btn-track-remove {
  position: absolute;
  left: calc(50% + 30.5%);
  top: calc(53.2% - 29.5%);
  transform: translate(-50%, -50%) scale(0.85);
  z-index: 6;
  background: #ffffff;
  border: 1px solid var(--paper-border-focus);
  color: var(--graphite-dark);
  border-radius: 50%;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease, background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  touch-action: manipulation;
  padding: 0;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.btn-track-remove:hover {
  background: #ffffff;
  border-color: #ea580c;
  color: #ea580c;
  transform: translate(-50%, -50%) scale(1.08);
}

.btn-track-remove svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.btn-track-remove.visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}

.tracks-8 .btn-track-clear,
.tracks-12 .btn-track-clear,
.tracks-8 .btn-track-remove,
.tracks-12 .btn-track-remove {
  width: 24px;
  height: 24px;
}

.tracks-8 .btn-track-clear svg,
.tracks-12 .btn-track-clear svg,
.tracks-8 .btn-track-remove svg,
.tracks-12 .btn-track-remove svg {
  width: 12px;
  height: 12px;
}

.track-pill-btn {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--paper-border);
  color: var(--graphite-medium);
  border-radius: var(--radius-pill);
  min-width: 32px;
  height: 26px;
  padding: 0 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  transition: all 0.15s ease;
}

.track-pill-btn:hover {
  background: rgba(255, 255, 255, 0.95);
  border-color: var(--paper-border-focus);
  color: var(--graphite-dark);
}

.track-pill-btn.key-badge {
  cursor: pointer;
  font-size: 0.72rem;
  color: var(--graphite-light);
  border-style: solid;
}

.track-pill-btn.key-badge:active, .track-pill-btn.key-badge.pressed {
  background: var(--graphite-dark);
  color: #fff;
  border-color: var(--graphite-dark);
}

.track-pill-btn.btn-mute,
[id^="btn-mute-"] {
  display: none !important;
}

.track-pill-btn.active-mute {
  background: var(--pencil-red-bg);
  border-color: var(--pencil-red-border);
  color: var(--pencil-red);
}

.track-pill-btn.active-mute svg {
  stroke: var(--pencil-red);
}

.track-pill-btn svg {
  width: 13px;
  height: 13px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Multiplier / cycle badge */
.track-sync-info {
  font-size: 0.68rem;
  font-family: var(--font-mono);
  color: var(--graphite-light);
  min-width: 32px;
  text-align: center;
}

/* --------------------------------------------------------------------------
   Bottom Bar
   -------------------------------------------------------------------------- */
.bottom-bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 12px 20px;
  background: #ebe6dc;
  border-top: none;
  flex-shrink: 0;
  height: 68px;
  z-index: 20;
  box-shadow: 0 -4px 18px rgba(35, 33, 31, 0.08);
}

.master-rec-section {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

#master-idle-waveform {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 48px;
  pointer-events: none;
  opacity: 0.35;
  transition: opacity 0.25s ease;
}

#master-idle-waveform.is-recording { opacity: 0; }

.btn-master-rec {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 38px;
  padding: 0 16px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--paper-border);
  color: var(--graphite-dark);
  font-family: var(--font-main);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.18s ease;
}

.btn-master-rec:hover {
  background: #fff;
  border-color: var(--paper-border-focus);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}

.rec-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--pencil-red);
  transition: transform 0.2s ease;
}

.btn-master-rec.recording {
  background: var(--pencil-red);
  color: #fff;
  border-color: var(--pencil-red);
}

.btn-master-rec.recording:hover {
  background: #e2544c;
  border-color: #e2544c;
  color: #fff;
}

.btn-master-rec.recording .rec-dot {
  background: #fff;
  border-radius: 2px;
  animation: pulseRec 1s infinite alternate;
}

@keyframes pulseRec {
  0% { transform: scale(0.9); opacity: 0.8; }
  100% { transform: scale(1.15); opacity: 1; }
}

.rec-timer {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--graphite-light);
  min-width: 48px;
}

/* Master Rec Auxiliary Action Buttons (Play/Pause & Download) */
.btn-master-aux {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--paper-border);
  color: var(--graphite-dark);
  cursor: pointer;
  transition: all 0.18s cubic-bezier(0.2, 0.9, 0.3, 1);
  flex-shrink: 0;
}

.btn-master-aux:hover {
  background: #ffffff;
  border-color: var(--paper-border-focus);
  box-shadow: 0 1px 5px rgba(0, 0, 0, 0.06);
  transform: scale(1.05);
}

.btn-master-aux:active,
.btn-master-aux.active {
  background: rgba(50, 47, 44, 0.12);
  border-color: var(--graphite-dark);
  transform: scale(0.96);
}

.btn-master-aux svg {
  display: block;
}

/* Master Visualizer Area */
.master-visualizer-container {
  flex: 1;
  height: 48px;
  position: relative;
  background: rgba(0, 0, 0, 0.045);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  align-items: center;
}

#master-oscilloscope {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

#master-oscilloscope.interactive {
  cursor: col-resize;
}

.master-visualizer-label {
  display: none;
}

/* Download / Export Banner (Pops up directly above REC button with upward movement) */
@keyframes popUpWavElastic {
  0% {
    opacity: 0;
    transform: translateY(28px) scale(0.82);
  }
  40% {
    opacity: 1;
    transform: translateY(-8px) scale(1.06);
  }
  62% {
    transform: translateY(4px) scale(0.97);
  }
  80% {
    transform: translateY(-2px) scale(1.015);
  }
  92% {
    transform: translateY(1px) scale(0.995);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Download / Export Container (Aligned to the right directly above timeline) */
.export-container {
  position: absolute;
  bottom: 74px;
  right: 20px;
  left: auto;
  transform: none;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: flex-end;
  gap: 8px;
  z-index: 100;
  pointer-events: none;
  max-width: calc(100vw - 40px);
}

/* "Buy me a coffee" link in Release Notes Modal */
.release-coffee-wrap {
  margin-top: 8px;
}

.buy-me-coffee-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-main);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--graphite-medium);
  text-decoration: none;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(0, 0, 0, 0.04);
  border: 1px solid var(--paper-border);
  transition: all 0.18s ease;
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.buy-me-coffee-link:hover {
  background: #ffffff;
  color: #1e3a8a;
  border-color: #1e3a8a;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
  transform: translateY(-1px);
}

[data-theme="dark"] .buy-me-coffee-link {
  color: var(--graphite-medium);
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--paper-border);
}

[data-theme="dark"] .buy-me-coffee-link:hover {
  background: rgba(255, 255, 255, 0.14);
  color: #93c5fd;
  border-color: #93c5fd;
  transform: translateY(-1px);
}

@keyframes fadeInCoffee {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.export-pills-row {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap-reverse;
  pointer-events: none;
}

.export-banner {
  display: none;
  pointer-events: auto;
  align-items: center;
  gap: 10px;
  background: #fff;
  border: 1.5px solid var(--graphite-dark);
  padding: 6px 8px 6px 14px;
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  white-space: nowrap;
  box-sizing: border-box;
  transition: width 0.35s cubic-bezier(0.25, 1, 0.5, 1),
              padding 0.35s cubic-bezier(0.25, 1, 0.5, 1),
              margin 0.35s cubic-bezier(0.25, 1, 0.5, 1),
              opacity 0.28s ease,
              transform 0.32s cubic-bezier(0.25, 1, 0.5, 1);
}

.export-banner.visible {
  display: inline-flex;
  animation: popUpWavElastic 1.28s cubic-bezier(0.25, 1.25, 0.5, 1) forwards;
}

.export-banner.closing {
  display: inline-flex !important;
  width: 0 !important;
  min-width: 0 !important;
  padding-left: 0 !important;
  padding-right: 0 !important;
  margin-left: -5px !important;
  margin-right: -5px !important;
  border-left-width: 0 !important;
  border-right-width: 0 !important;
  border-top-width: 0 !important;
  border-bottom-width: 0 !important;
  opacity: 0 !important;
  transform: translateY(12px) scale(0.7) !important;
  pointer-events: none !important;
  overflow: hidden !important;
}

.export-banner a {
  color: var(--graphite-dark);
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

.export-banner a:hover {
  text-decoration: underline;
}

.export-close {
  background: none;
  border: none;
  color: var(--graphite-light);
  cursor: pointer;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  margin-right: -2px;
  padding: 0;
  transition: background-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.export-close svg {
  width: 13px;
  height: 13px;
  stroke: currentColor;
}

.export-close:hover {
  background: rgba(189, 58, 51, 0.12);
  color: #bd3a33;
  transform: scale(1.08);
}

[data-theme="dark"] .export-close:hover {
  background: rgba(224, 74, 66, 0.22);
  color: #f87171;
  transform: scale(1.08);
}

/* --------------------------------------------------------------------------
   Settings & Calibration Modals (Latency & Reverb)
   -------------------------------------------------------------------------- */
.latency-overlay,
.reverb-overlay,
.release-overlay {
  position: fixed;
  inset: 0;
  background: rgba(35, 33, 31, 0.45);
  z-index: 190;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  animation: fadeIn 0.18s ease-out;
}

.latency-card,
.reverb-card,
.release-card,
.scale-card,
.voicings-card,
.pro-card,
.settings-card {
  width: 100%;
  max-width: 440px;
  margin: 0 16px;
  padding: 24px 26px;
  background: #fff;
  border: 1px solid var(--paper-border-focus);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 32px rgba(40, 35, 30, 0.12);
  display: flex;
  flex-direction: column;
}

.settings-card {
  max-width: 440px;
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 6px 0;
}

.settings-label-wrap {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.settings-label-title {
  font-family: var(--font-main);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--graphite-dark);
}

.settings-label-desc {
  font-size: 0.74rem;
  color: var(--graphite-medium);
  line-height: 1.35;
}

.settings-helper-text {
  font-size: 0.72rem;
  color: var(--graphite-light);
  line-height: 1.4;
  margin-top: 10px;
}

.release-card {
  max-width: 500px;
  max-height: 85vh;
  overflow: hidden;
}

.scale-card {
  max-width: 460px;
  max-height: 88vh;
  overflow-y: auto;
}

.voicings-card {
  max-width: 480px;
  max-height: 88vh;
  overflow-y: auto;
}

.pro-card {
  max-width: 490px;
  max-height: 90vh;
  overflow-y: auto;
}

.release-header {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--paper-border);
}

.release-header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.release-header-top h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--graphite-dark);
}

.release-credit {
  font-size: 0.81rem;
  font-family: var(--font-main);
  color: var(--graphite-medium);
  margin-top: 1px;
  line-height: 1.4;
  white-space: nowrap;
}

.release-credit a {
  color: var(--graphite-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity 0.15s ease;
}

.release-credit a:hover {
  opacity: 0.75;
}

.release-content {
  overflow-y: auto;
  margin-top: 14px;
  padding-right: 6px;
}

.release-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--graphite-dark);
  margin-bottom: 6px;
}

.release-content h4 {
  font-size: 0.82rem;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--graphite-medium);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.release-features-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.release-features-list li {
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--graphite-medium);
  padding-left: 14px;
  position: relative;
}

.release-features-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--pencil-gold);
  font-weight: bold;
}

.release-features-list li strong {
  color: var(--graphite-dark);
}

.latency-header,
.reverb-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.latency-header h3,
.reverb-header h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--graphite-dark);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--graphite-light);
  cursor: pointer;
  line-height: 1;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  transition: color 0.15s;
}

.modal-close:hover {
  color: var(--graphite-dark);
}

.latency-description,
.reverb-description {
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--graphite-medium);
  margin: 10px 0 16px 0;
}

/* Nudge section */
.latency-nudge-section {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 12px;
}

.btn-nudge {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--paper-border);
  color: var(--graphite-dark);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  padding: 6px 10px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-nudge:hover {
  background: var(--graphite-hover);
  border-color: var(--paper-border-focus);
}

.btn-nudge:active {
  background: var(--graphite-active);
}

.latency-input-wrapper {
  display: flex;
  align-items: baseline;
  justify-content: center;
  background: rgba(0, 0, 0, 0.02);
  border: 1px solid var(--paper-border-focus);
  border-radius: var(--radius-md);
  padding: 4px 10px;
  min-width: 90px;
}

#input-latency-val {
  border: none;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--graphite-dark);
  width: 58px;
  text-align: right;
  outline: none;
  -moz-appearance: textfield;
}

#input-latency-val::-webkit-outer-spin-button,
#input-latency-val::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.latency-ms-unit {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--graphite-light);
  margin-left: 3px;
}

/* Presets row */
.latency-presets-row,
.reverb-presets-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}

.presets-tag {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--graphite-light);
}

.btn-preset,
.btn-rev-preset {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--paper-border);
  color: var(--graphite-medium);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 3px 8px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-preset:hover,
.btn-rev-preset:hover {
  background: #fff;
  border-color: var(--paper-border-focus);
  color: var(--graphite-dark);
}

.btn-preset.active,
.btn-rev-preset.active {
  background: var(--graphite-dark);
  color: #fff;
  border-color: var(--graphite-dark);
}

/* Reverb Sliders List (Tactile Audio Plugin Style) */
.reverb-sliders-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 8px;
}

.reverb-slider-row {
  display: flex;
  flex-direction: column;
  position: relative;
  width: 100%;
}

.reverb-slider-track-wrap {
  position: relative;
  width: 100%;
  height: 34px;
  background: rgba(0, 0, 0, 0.04);
  border: 1px solid var(--paper-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-sizing: border-box;
  display: flex;
  align-items: center;
}

.reverb-slider-inner-labels {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  pointer-events: none;
  z-index: 1;
  user-select: none;
}

.reverb-slider-name {
  font-family: var(--font-main);
  font-size: 0.77rem;
  font-weight: 500;
  color: var(--graphite-dark);
  opacity: 0.55;
  letter-spacing: 0.01em;
}

.reverb-slider-val {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--graphite-dark);
  opacity: 0.65;
}

/* Tactile Range Slider overlay */
.reverb-range {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  background: transparent;
  -webkit-appearance: none;
  appearance: none;
  z-index: 2;
  cursor: ew-resize;
  outline: none;
}

.reverb-range::-webkit-slider-runnable-track {
  background: transparent;
  height: 100%;
  border: none;
}

.reverb-range::-moz-range-track {
  background: transparent;
  height: 100%;
  border: none;
}

.reverb-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 28px;
  margin-top: 2px;
  border-radius: 4px;
  background-color: #ffffff;
  background-image: linear-gradient(
    to right,
    transparent 43%,
    rgba(0, 0, 0, 0.28) 43%,
    rgba(0, 0, 0, 0.28) 57%,
    transparent 57%
  );
  border: 1.5px solid var(--graphite-dark);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.16);
  cursor: ew-resize;
  position: relative;
  z-index: 3;
  transition: background-color 0.12s ease, border-color 0.12s ease, transform 0.1s ease;
}

.reverb-range::-webkit-slider-thumb:hover {
  background-color: #fbfaf8;
  border-color: #111;
  transform: scaleY(1.04);
}

.reverb-range::-webkit-slider-thumb:active {
  background-color: var(--graphite-dark);
  background-image: linear-gradient(
    to right,
    transparent 43%,
    rgba(255, 255, 255, 0.5) 43%,
    rgba(255, 255, 255, 0.5) 57%,
    transparent 57%
  );
  border-color: var(--graphite-dark);
}

.reverb-range::-moz-range-thumb {
  width: 16px;
  height: 28px;
  border-radius: 4px;
  background-color: #ffffff;
  background-image: linear-gradient(
    to right,
    transparent 43%,
    rgba(0, 0, 0, 0.28) 43%,
    rgba(0, 0, 0, 0.28) 57%,
    transparent 57%
  );
  border: 1.5px solid var(--graphite-dark);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.16);
  cursor: ew-resize;
}

.latency-divider {
  border: none;
  height: 1px;
  background: var(--paper-border);
  margin: 16px 0 14px 0;
}

/* --------------------------------------------------------------------------
   Scale & Voicings Modals Components
   -------------------------------------------------------------------------- */
.scale-section-title {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--graphite-medium);
  margin-top: 12px;
  margin-bottom: 8px;
}

.scale-roots-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
}

.scale-root-btn,
.scale-type-btn {
  height: 28px;
  background: var(--paper-panel);
  border: 1px solid var(--paper-border);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--graphite-dark);
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.scale-root-btn:hover,
.scale-type-btn:hover {
  border-color: var(--pencil-gold);
  color: var(--pencil-gold);
}

.scale-root-btn.active,
.scale-type-btn.active {
  background: #1c1a18;
  border-color: #1c1a18;
  color: #ffffff;
  font-weight: 600;
}

.scale-types-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.scale-notes-preview-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 4px;
}

.scale-notes-display {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--pencil-gold);
}

/* Voicings Modal Styling */
.voicing-mode-toggle-row {
  display: flex;
  gap: 8px;
}

.voicings-preview-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.voicing-preview-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px;
  border-radius: 6px;
  background: var(--paper-panel);
  border: 1px solid var(--paper-border);
  font-size: 0.78rem;
}

.voicing-preview-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.voicing-preview-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.voicing-preview-name {
  font-weight: 600;
  color: var(--graphite-dark);
}

.voicing-preview-feeling {
  color: var(--graphite-medium);
  font-style: italic;
  font-size: 0.74rem;
}

.voicing-preview-semitones {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.75rem;
  color: var(--pencil-gold);
}

/* --------------------------------------------------------------------------
   Scale Modal Visual Piano Keyboard
   -------------------------------------------------------------------------- */
.scale-piano-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--paper-panel);
  border: 1px solid var(--paper-border);
  border-radius: var(--radius-md);
  padding: 12px;
}

.scale-piano-container {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  position: relative;
  height: 96px;
  user-select: none;
  touch-action: manipulation;
  overflow-x: auto;
  padding-bottom: 2px;
}

.piano-octave {
  display: flex;
  position: relative;
  height: 90px;
}

.piano-key-white {
  position: relative;
  width: 32px;
  height: 90px;
  background: #ffffff;
  border: 1px solid #c8c4bc;
  border-radius: 0 0 4px 4px;
  margin-right: -1px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  padding-bottom: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
  z-index: 1;
}

.piano-key-white:hover {
  background: #fdfaf4;
}

.piano-key-white.active {
  background: #fef3c7;
  border-color: #f59e0b;
}

.piano-key-white.root {
  background: #fed7aa;
  border-color: #ea580c;
}

.piano-key-black {
  position: absolute;
  top: 0;
  width: 20px;
  height: 56px;
  background: #1c1a18;
  border: 1px solid #111;
  border-radius: 0 0 3px 3px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  padding-bottom: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
  z-index: 3;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.35);
}

.piano-key-black:hover {
  background: #383430;
}

.piano-key-black.active {
  background: #d97706;
  border-color: #b45309;
}

.piano-key-black.root {
  background: #ea580c;
  border-color: #c2410c;
}

.piano-key-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  line-height: 1;
  pointer-events: none;
}

.piano-key-white .piano-key-badge {
  color: #78716c;
}

.piano-key-white.active .piano-key-badge {
  color: #b45309;
}

.piano-key-white.root .piano-key-badge {
  color: #c2410c;
}

.piano-key-black .piano-key-badge {
  color: #d6d3d1;
  font-size: 0.58rem;
}

.piano-key-black.active .piano-key-badge {
  color: #ffffff;
}

.piano-key-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  margin-bottom: 4px;
}

.piano-key-white.active .piano-key-dot {
  background: #f59e0b;
}

.piano-key-white.root .piano-key-dot {
  background: #ea580c;
}

.piano-key-black.active .piano-key-dot {
  background: #ffffff;
}

/* --------------------------------------------------------------------------
   Pro Mode & Pro Modal
   -------------------------------------------------------------------------- */
.btn-pro-badge {
  font-weight: 700;
  font-size: 0.72rem;
  color: #b45309;
  border-color: rgba(245, 158, 11, 0.45);
  background: rgba(254, 243, 199, 0.7);
  letter-spacing: 0.03em;
  padding: 0 9px;
  transition: all 0.15s ease;
}

.btn-pro-badge:hover {
  background: #ffffff;
  color: #ea580c;
  border-color: #ea580c;
  transform: scale(1.04);
}

.btn-pro-badge.is-pro {
  color: #047857;
  border-color: rgba(16, 185, 129, 0.45);
  background: rgba(209, 250, 229, 0.7);
}

.pro-card {
  max-width: 490px;
  max-height: 90vh;
  overflow-y: auto;
}

.pro-card .reverb-header {
  position: relative;
  justify-content: center;
}

.pro-header-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.pro-card .reverb-header .modal-close {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
}

.pro-chip {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 800;
  color: #ffffff;
  background: linear-gradient(135deg, #f59e0b, #ea580c);
  padding: 2px 7px;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.pro-hero-section {
  text-align: center;
  padding: 8px 0 14px 0;
  border-bottom: 1px solid var(--paper-border);
}

.pro-headline {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  line-height: 1.3;
  font-weight: 600;
  color: var(--graphite-dark);
  margin: 4px 0 6px 0;
}

.pro-headline-sub {
  display: block;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--graphite-medium);
  margin-top: 3px;
}

.pro-founders-banner {
  background: rgba(254, 243, 199, 0.55);
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  margin: 12px 0 10px 0;
  text-align: center;
}

.pro-founders-tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #b45309;
  margin-bottom: 4px;
}

.pro-founders-text {
  font-size: 0.81rem;
  line-height: 1.45;
  color: #451a03;
  margin: 0;
}

.pro-price-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 6px;
}

.pro-original-price {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--graphite-light);
  text-decoration: line-through;
  opacity: 0.7;
}

.pro-price-tag {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 800;
  color: #ea580c;
}

.pro-discount-pill {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  background: #ea580c;
  color: #ffffff;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.03em;
}

.pro-price-sub {
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--graphite-medium);
}

.pro-features-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 14px 0;
}

.pro-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: var(--paper-panel);
  border: 1px solid var(--paper-border);
  border-radius: var(--radius-md);
  padding: 10px 12px;
}

.pro-feature-icon {
  font-size: 1.15rem;
  line-height: 1.2;
}

.pro-feature-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.pro-feature-text strong {
  font-size: 0.82rem;
  color: var(--graphite-dark);
}

.pro-feature-text span {
  font-size: 0.74rem;
  color: var(--graphite-medium);
  line-height: 1.35;
}

.pro-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
  padding-top: 6px;
}

.btn-pro-action {
  width: 100%;
  height: 38px;
  font-size: 0.88rem;
  font-weight: 600;
  background: #1c1a18;
  color: #ffffff;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  transition: all 0.15s ease;
}

.btn-pro-action:hover {
  background: #ea580c;
  transform: translateY(-1px);
}

.pro-license-section {
  width: 100%;
  margin: 4px 0 6px 0;
  text-align: center;
}

.btn-toggle-license {
  background: none;
  border: none;
  color: var(--graphite-medium);
  font-size: 0.74rem;
  font-family: var(--font-main);
  text-decoration: underline;
  cursor: pointer;
  padding: 4px 8px;
  transition: color 0.15s ease;
}

.btn-toggle-license:hover {
  color: #ea580c;
}

.pro-license-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 6px;
  width: 100%;
}

.pro-license-input {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  padding: 6px 10px;
  border: 1px solid var(--paper-border-focus);
  border-radius: 6px;
  background: #ffffff;
  color: var(--graphite-dark);
  flex: 1;
  max-width: 250px;
  outline: none;
  transition: border-color 0.15s ease;
}

.pro-license-input:focus {
  border-color: #ea580c;
}

.btn-activate-license {
  background: #ea580c;
  color: #ffffff;
  border: none;
  border-radius: 6px;
  padding: 6px 14px;
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s ease;
}

.btn-activate-license:hover {
  opacity: 0.9;
}

.pro-demo-toggle-row {
  display: flex;
  align-items: center;
  justify-content: center;
}

.pro-demo-label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--graphite-medium);
  cursor: pointer;
}

.pro-demo-label input[type="checkbox"] {
  cursor: pointer;
}

/* Auto Calibration */
.latency-calib-section {
  background: rgba(0, 0, 0, 0.02);
  border: 1px solid var(--paper-border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
}

.calib-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.calib-title {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--graphite-dark);
}

.btn-calib-action {
  background: var(--graphite-dark);
  color: #fff;
  border: none;
  font-family: var(--font-main);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: opacity 0.15s ease;
}

.btn-calib-action:hover {
  opacity: 0.88;
}

.btn-calib-action:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.calib-instructions {
  font-size: 0.71rem;
  line-height: 1.35;
  color: var(--graphite-light);
  margin: 8px 0;
}

.calib-status-box {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--graphite-medium);
  background: #fff;
  border: 1px solid var(--paper-border);
  border-radius: var(--radius-sm);
  padding: 6px 8px;
  min-height: 28px;
  display: flex;
  align-items: center;
}

.calib-status-box.success {
  border-color: var(--pencil-green);
  color: var(--pencil-green);
  background: rgba(63, 126, 88, 0.06);
}

.calib-status-box.measuring {
  border-color: var(--pencil-gold);
  color: var(--pencil-gold);
  background: rgba(199, 137, 50, 0.06);
}

.calib-status-box.error {
  border-color: var(--pencil-red-border);
  color: var(--pencil-red);
  background: var(--pencil-red-bg);
}

/* --------------------------------------------------------------------------
   Audio Permission Overlay (First Click Modal)
   -------------------------------------------------------------------------- */
.permission-overlay {
  position: fixed;
  inset: 0;
  background: rgba(240, 237, 230, 0.7); /* 70% transparency so looper is visible underneath */
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.permission-card {
  max-width: 440px;
  padding: 36px 32px;
  background: #fff;
  border: 1px solid var(--paper-border-focus);
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: 0 8px 30px rgba(40, 35, 30, 0.08);
}

.permission-card h2 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 2.25rem; /* 1.5x larger than original 1.5rem */
  margin-bottom: 12px;
  color: var(--graphite-dark);
}

.permission-card p {
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--graphite-medium);
  margin-bottom: 24px;
}

.permission-headphones {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--graphite-medium);
  background: none;
  border: none;
  padding: 0;
  margin-top: 14px;
  margin-bottom: 0;
  letter-spacing: 0.01em;
}

.permission-headphones .headphones-icon {
  font-size: 0.95rem;
  line-height: 1;
}

[data-theme="dark"] .permission-headphones {
  color: var(--graphite-light);
}

.btn-primary,
#btn-start-app {
  background: #ea580c;
  color: #ffffff;
  border: 1px solid #ea580c;
  border-radius: var(--radius-pill);
  padding: 10px 24px;
  font-size: 0.88rem;
  font-weight: 600;
  font-family: var(--font-main);
  cursor: pointer;
  touch-action: manipulation;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.1s ease;
}

.btn-primary:hover,
#btn-start-app:hover {
  background: #ffffff;
  border-color: #ea580c;
  color: #ea580c !important;
  opacity: 1;
  transform: translateY(-1px);
}

.btn-primary:active,
#btn-start-app:active,
.btn-primary.pressed,
#btn-start-app.pressed {
  background: #000000 !important;
  border-color: #000000 !important;
  color: #ffffff !important;
  transform: translateY(0);
}

/* Permission Modal Dismissing (ease-in-elastic exit to the right outside screen) */
.permission-overlay.dismissing {
  pointer-events: none;
  animation: fadeOutBackdrop 0.65s ease forwards;
}

.permission-overlay.dismissing .permission-card {
  animation: exitModalRight 0.65s cubic-bezier(0.55, -0.3, 0.2, 1.3) forwards;
}

@keyframes exitModalRight {
  0% {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
  20% {
    opacity: 1;
    transform: translateX(-24px) scale(1.03);
  }
  40% {
    opacity: 0.95;
    transform: translateX(20px) scale(0.98);
  }
  100% {
    opacity: 0;
    transform: translateX(130vw) scale(0.5);
  }
}

@keyframes fadeOutBackdrop {
  0% {
    opacity: 1;
  }
  65% {
    opacity: 0.65;
  }
  100% {
    opacity: 0;
  }
}

/* --------------------------------------------------------------------------
   Keyboard Shortcut Help Popover / Toast
   -------------------------------------------------------------------------- */
.shortcut-toast {
  position: fixed;
  bottom: 92px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(35, 33, 31, 0.85);
  color: #f7f4ee;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 150;
}

.shortcut-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(-4px);
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --------------------------------------------------------------------------
   Responsive Adjustments
   -------------------------------------------------------------------------- */
@media (max-width: 680px) {
  #app {
    padding: 0;
    height: 100dvh;
  }

  .scroll-container {
    padding-top: 0;
  }

  .top-bar {
    flex-direction: column;
    align-items: stretch;
    padding: 6px 10px;
    background: transparent !important;
    border-bottom: none !important;
    box-shadow: none !important;
    gap: 6px;
  }

  .brand {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .brand h1 {
    font-size: 1.15rem;
  }

  .device-selectors {
    width: 100%;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
    justify-content: flex-start;
    margin-left: 0;
  }

  .header-controls-row {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 6px;
    width: 100%;
  }

  .device-group {
    flex: 0 0 auto;
    padding: 2px 6px;
    min-height: 25px;
  }

  .device-select {
    width: 80px;
    max-width: 80px;
    flex: 0 0 auto;
    font-size: 0.72rem;
  }

  .stage-center {
    flex: 1;
    padding: 4px 6px;
    min-height: 0;
    width: 100%;
  }

  .looper-grid {
    width: 100%;
    min-height: 480px;
    position: relative;
    overflow: visible;
  }

  .btn-track-clear {
    width: 24px;
    height: 24px;
  }

  .btn-track-clear svg {
    width: 12px;
    height: 12px;
  }

  .track-controls {
    margin-top: 4px;
    gap: 6px;
    padding: 0;
  }

  .track-pill-btn {
    min-width: 26px;
    height: 22px;
    padding: 0 5px;
    font-size: 0.68rem;
  }

  .bottom-bar {
    height: 56px;
    padding: 6px 10px 0 10px;
    gap: 8px;
    position: sticky;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--paper-bg);
    border-top: none;
    flex-shrink: 0;
    z-index: 20;
    box-shadow: 0 -3px 14px rgba(35, 33, 31, 0.09);
  }

  /* Mobile floating Download WAV container (Aligned to right above timeline) */
  .export-container {
    position: absolute;
    bottom: 60px;
    right: 12px;
    left: auto;
    transform: none;
    align-items: flex-end;
    gap: 6px;
    width: auto;
    max-width: calc(100vw - 24px);
  }

  .export-banner {
    padding: 5px 10px;
    font-size: 0.72rem;
  }

  .export-banner.visible {
    animation: popUpWavElastic 1.28s cubic-bezier(0.25, 1.25, 0.5, 1) forwards;
  }

  .btn-master-rec {
    height: 32px;
    padding: 0 10px;
    font-size: 0.74rem;
  }

  .master-visualizer-container {
    height: 36px;
  }

  .latency-card,
  .reverb-card,
  .settings-card {
    padding: 16px 14px;
    max-width: 95vw;
  }
}

/* --------------------------------------------------------------------------
   Dark Mode Component Styles
   -------------------------------------------------------------------------- */
[data-theme="dark"] .btn-soft {
  background: rgba(68, 64, 59, 0.65);
  border-color: var(--paper-border);
  color: #f4f4f4;
}

[data-theme="dark"] .btn-soft svg,
[data-theme="dark"] .btn-soft .device-icon {
  stroke: #f4f4f4;
}

[data-theme="dark"] .btn-soft:hover {
  background: rgba(85, 80, 74, 0.85);
  color: #ffffff;
}

[data-theme="dark"] .btn-soft:hover svg,
[data-theme="dark"] .btn-soft:hover .device-icon {
  stroke: #ffffff;
}

[data-theme="dark"] .btn-soft.active {
  background: #f0ede6;
  color: #181716;
  border-color: #f0ede6;
}

[data-theme="dark"] .btn-soft.active svg,
[data-theme="dark"] .btn-soft.active .device-icon {
  stroke: #181716;
}

[data-theme="dark"] .device-group {
  background: rgba(58, 55, 50, 0.65);
  border-color: var(--paper-border);
  color: #f4f4f4;
}

[data-theme="dark"] .device-group svg,
[data-theme="dark"] .device-group .device-icon {
  stroke: #f4f4f4;
}

[data-theme="dark"] .device-group:hover,
[data-theme="dark"] .device-group:focus-within {
  background: rgba(72, 68, 62, 0.85);
  border-color: var(--paper-border-focus);
}

[data-theme="dark"] .device-group:hover svg,
[data-theme="dark"] .device-group:hover .device-icon,
[data-theme="dark"] .device-group:focus-within svg,
[data-theme="dark"] .device-group:focus-within .device-icon {
  stroke: #ffffff;
}

[data-theme="dark"] .device-select option {
  background: #383531;
  color: #f0ede6;
}

[data-theme="dark"] .device-select {
  color: #f4f4f4;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="10" height="6" viewBox="0 0 10 6"><path d="M1 1l4 4 4-4" fill="none" stroke="%23f4f4f4" stroke-width="1.2" stroke-linecap="round"/></svg>');
}

[data-theme="dark"] .device-select:hover,
[data-theme="dark"] .device-select:focus {
  color: #ffffff;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="10" height="6" viewBox="0 0 10 6"><path d="M1 1l4 4 4-4" fill="none" stroke="%23ffffff" stroke-width="1.2" stroke-linecap="round"/></svg>');
}

[data-theme="dark"] .btn-track-clear,
[data-theme="dark"] .btn-track-remove {
  background: #f0ede6;
  border-color: #f0ede6;
  color: #1a1918;
}

[data-theme="dark"] .btn-track-clear:hover,
[data-theme="dark"] .btn-track-remove:hover {
  background: #ffffff;
  border-color: #ea580c;
  color: #ea580c;
}

[data-theme="dark"] .track-pill-btn {
  background: rgba(68, 64, 59, 0.6);
  border-color: var(--paper-border);
  color: var(--graphite-medium);
}

[data-theme="dark"] .master-visualizer-container {
  background: transparent;
  border: none;
}

[data-theme="dark"] .btn-master-rec {
  background: #f0ede6;
  border-color: #f0ede6;
  color: #000000 !important;
}

[data-theme="dark"] .btn-master-rec .rec-text {
  color: #000000 !important;
}

[data-theme="dark"] .btn-master-rec:hover {
  background: #ffffff;
  border-color: #ffffff;
  color: #000000 !important;
}

[data-theme="dark"] .btn-master-aux {
  background: #f0ede6;
  border-color: #f0ede6;
  color: #000000 !important;
}

[data-theme="dark"] .btn-master-aux:hover {
  background: #ffffff;
  border-color: #ffffff;
  color: #000000 !important;
}

[data-theme="dark"] .btn-master-aux:active,
[data-theme="dark"] .btn-master-aux.active {
  background: #3b82f6;
  border-color: #3b82f6;
  color: #ffffff !important;
}

[data-theme="dark"] .btn-master-rec.recording {
  background: var(--pencil-red);
  border-color: var(--pencil-red);
  color: #ffffff !important;
}

[data-theme="dark"] .btn-master-rec.recording:hover {
  background: #e85f57;
  border-color: #e85f57;
  color: #ffffff !important;
}

[data-theme="dark"] .btn-master-rec.recording .rec-text {
  color: #ffffff !important;
}

[data-theme="dark"] .btn-master-rec.recording .rec-dot {
  background: #ffffff;
}

[data-theme="dark"] .permission-overlay {
  background: rgba(30, 28, 26, 0.7); /* 70% dark transparency */
}

[data-theme="dark"] .latency-card,
[data-theme="dark"] .reverb-card,
[data-theme="dark"] .release-card,
[data-theme="dark"] .permission-card,
[data-theme="dark"] .scale-card,
[data-theme="dark"] .voicings-card,
[data-theme="dark"] .pro-card,
[data-theme="dark"] .settings-card {
  background: #383531;
  border-color: var(--paper-border-focus);
  color: #f0ede6;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .settings-label-title {
  color: #ece8e1;
}

[data-theme="dark"] .settings-label-desc {
  color: #a8a39a;
}

[data-theme="dark"] .settings-helper-text {
  color: #8c867c;
}

[data-theme="dark"] .scale-root-btn,
[data-theme="dark"] .scale-type-btn {
  background: #282522;
  border-color: #44403a;
  color: #ece8e1;
}

[data-theme="dark"] .scale-root-btn:hover,
[data-theme="dark"] .scale-type-btn:hover {
  border-color: #e2a042;
  color: #e2a042;
}

[data-theme="dark"] .scale-root-btn.active,
[data-theme="dark"] .scale-type-btn.active {
  background: #f0ede6;
  border-color: #f0ede6;
  color: #1a1918;
}

[data-theme="dark"] .voicing-preview-item {
  background: #282522;
  border-color: #44403a;
}

[data-theme="dark"] .voicing-preview-name {
  color: #f0ede6;
}

[data-theme="dark"] .voicing-preview-feeling {
  color: var(--graphite-light);
}

[data-theme="dark"] .latency-header,
[data-theme="dark"] .reverb-header,
[data-theme="dark"] .release-header {
  border-bottom-color: var(--paper-border);
}

[data-theme="dark"] .version-badge {
  background: none;
  border: none;
  color: #f4f4f4;
  text-decoration: underline;
}

[data-theme="dark"] .version-badge:hover {
  background: none;
  border: none;
  color: #ffffff;
  text-decoration: underline;
}

[data-theme="dark"] .release-tag {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--paper-border);
  color: #f0ede6;
}

[data-theme="dark"] .release-credit {
  color: var(--graphite-medium);
}

[data-theme="dark"] .release-credit a {
  color: #f0ede6;
}

[data-theme="dark"] .release-credit a:hover {
  color: #ffffff;
}

[data-theme="dark"] .release-title {
  color: #f0ede6;
}

[data-theme="dark"] .release-summary,
[data-theme="dark"] .release-features-list li {
  color: var(--graphite-medium);
}

[data-theme="dark"] .release-content h4,
[data-theme="dark"] .release-features-list li strong {
  color: #f0ede6;
}

[data-theme="dark"] .latency-input-wrapper {
  background: rgba(68, 64, 59, 0.8);
  border-color: var(--paper-border);
}

[data-theme="dark"] .latency-input {
  color: #f0ede6;
}

[data-theme="dark"] .btn-rev-preset {
  background: rgba(68, 64, 59, 0.6);
  border-color: var(--paper-border);
  color: var(--graphite-medium);
}

[data-theme="dark"] .btn-rev-preset:hover {
  background: rgba(85, 80, 74, 0.8);
  color: var(--graphite-dark);
}

[data-theme="dark"] .btn-rev-preset.active {
  background: #f0ede6;
  color: #181716;
  border-color: #f0ede6;
}

[data-theme="dark"] .export-banner {
  background: #ffffff;
  border-color: #ffffff;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .export-banner a {
  color: #23211f; /* cinza escuro */
}

[data-theme="dark"] .export-banner a svg {
  stroke: #23211f;
}

[data-theme="dark"] .export-banner .export-close {
  color: #55514b;
}

[data-theme="dark"] .export-banner .export-close:hover {
  color: #1a1918;
}

[data-theme="dark"] .bottom-bar {
  background: #252320;
  box-shadow: 0 -4px 22px rgba(0, 0, 0, 0.45);
}

[data-theme="dark"] .master-visualizer-container {
  background: rgba(0, 0, 0, 0.28);
  border-color: rgba(255, 255, 255, 0.08);
}

/* Dark Mode: Start Looper Button */
[data-theme="dark"] .btn-primary,
[data-theme="dark"] #btn-start-app {
  background: #ea580c;
  border-color: #ea580c;
  color: #ffffff !important;
  font-weight: 600;
}

[data-theme="dark"] .btn-primary:hover,
[data-theme="dark"] #btn-start-app:hover {
  background: #ffffff;
  border-color: #ea580c;
  color: #ea580c !important;
}

[data-theme="dark"] .btn-primary:active,
[data-theme="dark"] #btn-start-app:active,
[data-theme="dark"] .btn-primary.pressed,
[data-theme="dark"] #btn-start-app.pressed {
  background: #000000 !important;
  border-color: #000000 !important;
  color: #ffffff !important;
}

/* Dark Mode: Reverb Sliders */
[data-theme="dark"] .reverb-slider-track-wrap {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--paper-border);
}

[data-theme="dark"] .reverb-slider-name,
[data-theme="dark"] .reverb-slider-val {
  color: #f0ede6;
  opacity: 0.6;
}

[data-theme="dark"] .reverb-range::-webkit-slider-thumb {
  background-color: #383531;
  background-image: linear-gradient(
    to right,
    transparent 43%,
    rgba(255, 255, 255, 0.35) 43%,
    rgba(255, 255, 255, 0.35) 57%,
    transparent 57%
  );
  border: 1.5px solid #f0ede6;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.45);
}

[data-theme="dark"] .reverb-range::-webkit-slider-thumb:hover {
  background-color: #48433d;
  border-color: #ffffff;
}

[data-theme="dark"] .reverb-range::-webkit-slider-thumb:active {
  background-color: #f0ede6;
  background-image: linear-gradient(
    to right,
    transparent 43%,
    rgba(0, 0, 0, 0.45) 43%,
    rgba(0, 0, 0, 0.45) 57%,
    transparent 57%
  );
  border-color: #f0ede6;
}

[data-theme="dark"] .reverb-range::-moz-range-thumb {
  background-color: #383531;
  background-image: linear-gradient(
    to right,
    transparent 43%,
    rgba(255, 255, 255, 0.35) 43%,
    rgba(255, 255, 255, 0.35) 57%,
    transparent 57%
  );
  border: 1.5px solid #f0ede6;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.45);
}

/* Dark Mode: Piano Keyboard */
[data-theme="dark"] .scale-piano-wrap {
  background: #282522;
  border-color: #44403a;
}

[data-theme="dark"] .piano-key-white {
  background: #2a2724;
  border-color: #44403a;
}

[data-theme="dark"] .piano-key-white:hover {
  background: #35312d;
}

[data-theme="dark"] .piano-key-white.active {
  background: #78350f;
  border-color: #d97706;
}

[data-theme="dark"] .piano-key-white.root {
  background: #9a3412;
  border-color: #ea580c;
}

[data-theme="dark"] .piano-key-white .piano-key-badge {
  color: #a8a29e;
}

[data-theme="dark"] .piano-key-white.active .piano-key-badge,
[data-theme="dark"] .piano-key-white.root .piano-key-badge {
  color: #fef3c7;
}

[data-theme="dark"] .piano-key-black {
  background: #151413;
  border-color: #262422;
}

[data-theme="dark"] .piano-key-black:hover {
  background: #2b2825;
}

[data-theme="dark"] .piano-key-black.active {
  background: #d97706;
  border-color: #f59e0b;
}

[data-theme="dark"] .piano-key-black.root {
  background: #ea580c;
  border-color: #f97316;
}

/* Dark Mode: Pro Upgrade Modal */
[data-theme="dark"] .btn-pro-badge {
  color: #fbbf24;
  border-color: rgba(245, 158, 11, 0.5);
  background: rgba(245, 158, 11, 0.15);
}

[data-theme="dark"] .btn-pro-badge:hover {
  background: #ea580c;
  color: #ffffff;
  border-color: #ea580c;
}

[data-theme="dark"] .btn-pro-badge.is-pro {
  color: #34d399;
  border-color: rgba(52, 211, 153, 0.4);
  background: rgba(16, 185, 129, 0.15);
}

[data-theme="dark"] .pro-hero-section {
  border-bottom-color: #44403a;
}

[data-theme="dark"] .pro-headline {
  color: #f0ede6;
}

[data-theme="dark"] .pro-headline-sub {
  color: #c4bfb6;
}

[data-theme="dark"] .pro-price-tag {
  color: #f97316;
}

[data-theme="dark"] .pro-price-sub,
[data-theme="dark"] .pro-description {
  color: var(--graphite-light);
}

[data-theme="dark"] .pro-feature-item {
  background: #282522;
  border-color: #44403a;
}

[data-theme="dark"] .pro-feature-text strong {
  color: #f0ede6;
}

[data-theme="dark"] .pro-feature-text span {
  color: var(--graphite-light);
}

[data-theme="dark"] .btn-pro-action {
  background: #ea580c;
  color: #ffffff;
}

[data-theme="dark"] .btn-pro-action:hover {
  background: #f97316;
}

[data-theme="dark"] .pro-demo-label {
  color: var(--graphite-light);
}

/* ==========================================================================
   Pinned Piano & Scale Preview (Top-Right of Board)
   ========================================================================== */

.board-pinned-piano {
  position: absolute;
  top: 14px;
  right: 20px;
  z-index: 25;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 7px 9px 8px;
  background: rgba(255, 255, 255, 0.90);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--paper-border-focus);
  border-radius: 8px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06);
  pointer-events: auto;
  user-select: none;
  cursor: grab;
  touch-action: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.board-pinned-piano:hover {
  border-color: var(--paper-border-focus);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.09);
}

.board-pinned-piano.is-dragging {
  cursor: grabbing !important;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.20) !important;
  z-index: 50 !important;
  transition: none !important;
}

[data-theme="dark"] .board-pinned-piano {
  background: rgba(30, 28, 25, 0.90);
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .board-pinned-piano:hover {
  border-color: rgba(255, 255, 255, 0.24);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.45);
}

[data-theme="dark"] .board-pinned-piano.is-dragging {
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.6) !important;
}

.pinned-piano-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  cursor: grab;
}

.board-pinned-piano.is-dragging .pinned-piano-header {
  cursor: grabbing !important;
}

.pinned-piano-scale-info {
  display: flex;
  align-items: center;
  cursor: pointer;
  padding: 2px 5px;
  border-radius: 4px;
  transition: background 0.15s ease, transform 0.1s ease;
  max-width: 124px;
  overflow: hidden;
  white-space: nowrap;
}

.pinned-piano-scale-info:hover {
  background: rgba(234, 88, 12, 0.12);
}

.pinned-piano-scale-info:active,
.pinned-piano-scale-info.playing {
  transform: scale(0.96);
  background: rgba(234, 88, 12, 0.22) !important;
  color: #ea580c !important;
}

.pinned-scale-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-main);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  color: var(--graphite-dark);
  line-height: 1.2;
}

.pinned-scale-root {
  display: inline-block;
  font-weight: 500;
  flex-shrink: 0;
}

.pinned-scale-type-slot {
  position: relative;
  display: inline-flex;
  align-items: center;
  overflow: hidden;
  height: 1.25em;
  line-height: 1.25em;
  vertical-align: middle;
  transition: width 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.pinned-scale-type {
  display: inline-block;
  white-space: nowrap;
  line-height: 1.25em;
  will-change: transform, opacity;
}

[data-theme="dark"] .pinned-scale-badge {
  color: #f5f2eb;
}

#board-scale-badge {
  font-weight: 400;
}

.pinned-piano-actions {
  display: flex;
  align-items: center;
  gap: 3px;
}

.btn-pinned-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 4px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--graphite-medium);
  cursor: pointer;
  padding: 0;
  transition: all 0.15s ease;
}

.btn-pinned-action:hover {
  background: rgba(234, 88, 12, 0.10);
  color: #ea580c;
  border-color: rgba(234, 88, 12, 0.25);
}

.btn-pinned-action:active {
  transform: scale(0.92);
}

.btn-pinned-action.active {
  color: #ea580c;
}

[data-theme="dark"] .btn-pinned-action {
  color: var(--graphite-light);
}

[data-theme="dark"] .btn-pinned-action:hover {
  background: rgba(234, 88, 12, 0.18);
  color: #f97316;
  border-color: rgba(234, 88, 12, 0.4);
}

.pinned-piano-keys-wrapper {
  display: flex;
  position: relative;
  width: 176px;
  height: 42px;
  user-select: none;
  touch-action: manipulation;
}

.pinned-piano-octave {
  position: relative;
  display: flex;
  width: 100%;
  height: 100%;
}

.pinned-key-white {
  flex: 1;
  height: 100%;
  background: #ffffff;
  border: 1px solid var(--paper-border-focus);
  border-radius: 0 0 3px 3px;
  position: relative;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  transition: background 0.1s ease, transform 0.06s ease;
  margin-right: -1px;
  padding-bottom: 2px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
}

.pinned-key-white:hover {
  background: #faf8f5;
}

.pinned-key-white.active {
  background: #fdfaf4;
}

.pinned-key-white.root {
  background: #fff8f3;
  border-bottom: 2px solid #ea580c;
}

.pinned-key-white.pressed,
.pinned-key-white:active {
  background: #f0ebe1;
  transform: translateY(1px);
}

.pinned-key-black {
  position: absolute;
  top: 0;
  width: 13px;
  height: 25px;
  background: #23211f;
  border-radius: 0 0 2px 2px;
  cursor: pointer;
  z-index: 2;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.25);
  transition: background 0.1s ease, transform 0.06s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  padding-bottom: 2px;
}

.pinned-key-black:hover {
  background: #35322e;
}

.pinned-key-black.active {
  background: #2a2724;
}

.pinned-key-black.root {
  background: #332117;
  border-bottom: 2px solid #ea580c;
}

.pinned-key-black.pressed,
.pinned-key-black:active {
  background: #151413;
  transform: translateY(1px);
}

.pinned-key-dot-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 10px;
  height: 10px;
  margin-bottom: 2px;
  pointer-events: none;
}

.pinned-key-dot {
  width: 3.6px;
  height: 3.6px;
  border-radius: 50%;
  background: #23211f;
  z-index: 2;
  transition: transform 0.15s ease;
}

.pinned-key-white .pinned-key-dot,
.pinned-key-white.active .pinned-key-dot {
  background: #23211f;
}

.pinned-key-white.root .pinned-key-dot {
  background: #ea580c;
  width: 4.2px;
  height: 4.2px;
}

.pinned-key-black .pinned-key-dot,
.pinned-key-black.active .pinned-key-dot {
  background: #ffffff;
}

.pinned-key-black.root .pinned-key-dot {
  background: #f97316;
  width: 4.2px;
  height: 4.2px;
}

.pinned-key-voicing-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 8.5px;
  height: 8.5px;
  border-radius: 50%;
  border: 1.4px solid var(--ring-color);
  box-sizing: border-box;
  z-index: 1;
  pointer-events: none;
  opacity: 0.9;
  transition: all 0.2s cubic-bezier(0.2, 0.9, 0.3, 1);
}

.pinned-key-voicing-ring.active-voice {
  border-width: 1.8px;
  opacity: 1;
  box-shadow: 0 0 5px var(--ring-color);
  transform: translate(-50%, -50%) scale(1.18);
}

.pinned-key-voicing-ring.ring-outer {
  width: 12px;
  height: 12px;
  border-width: 1.4px;
}

.pinned-key-voicing-ring.ring-outer.active-voice {
  border-width: 1.8px;
  box-shadow: 0 0 5px var(--ring-color);
  transform: translate(-50%, -50%) scale(1.15);
}

.pinned-key-dot.offscale {
  opacity: 0.35;
}

.pinned-key-white .pinned-key-dot.offscale {
  background: #23211f !important;
}

.pinned-key-black .pinned-key-dot.offscale {
  background: #ffffff !important;
}

/* Dark mode for pinned piano keys */
[data-theme="dark"] .pinned-key-white {
  background: #ded9cd;
  border-color: rgba(50, 48, 45, 0.6);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .pinned-key-white:hover {
  background: #ebe6da;
}

[data-theme="dark"] .pinned-key-white.active {
  background: #e8e3d6;
}

[data-theme="dark"] .pinned-key-white.root {
  background: #f4eae0;
  border-bottom: 2px solid #f97316;
}

[data-theme="dark"] .pinned-key-white.pressed,
[data-theme="dark"] .pinned-key-white:active {
  background: #c5bfb2;
}

[data-theme="dark"] .pinned-key-black {
  background: #1a1816;
  border: 1px solid rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .pinned-key-black:hover {
  background: #252320;
}

[data-theme="dark"] .pinned-key-black.active {
  background: #22201d;
}

[data-theme="dark"] .pinned-key-black.root {
  background: #2d1e15;
  border-bottom: 2px solid #f97316;
}

/* Ensure scale dots remain consistently black on white keys and white on black keys in dark theme */
[data-theme="dark"] .pinned-key-white .pinned-key-dot,
[data-theme="dark"] .pinned-key-white.active .pinned-key-dot {
  background: #23211f;
}

[data-theme="dark"] .pinned-key-white.root .pinned-key-dot {
  background: #ea580c;
}

[data-theme="dark"] .pinned-key-black .pinned-key-dot,
[data-theme="dark"] .pinned-key-black.active .pinned-key-dot {
  background: #ffffff;
}

[data-theme="dark"] .pinned-key-black.root .pinned-key-dot {
  background: #f97316;
}

[data-theme="dark"] .pinned-key-white .pinned-key-dot.offscale {
  background: #23211f !important;
  opacity: 0.35;
}

[data-theme="dark"] .pinned-key-black .pinned-key-dot.offscale {
  background: #ffffff !important;
  opacity: 0.35;
}

@media (max-width: 820px) {
  .board-pinned-piano {
    display: none;
  }
}