/* Ear Training styles - extracted from NoteHero prototype
   All selectors namespaced under #ear-panel
   Adapted to Virtual Guitar dark theme (#1a1a2e bg, #7c6fff accent) */

/* ============ CSS VARIABLES (scoped to ear-panel) ============ */
#ear-panel {
  overflow: hidden;
  --ear-bg-primary: #1a1a2e;
  --ear-bg-secondary: #16162a;
  --ear-bg-card: #1e1e3a;
  --ear-bg-card-hover: #262650;
  --ear-accent-purple: #7c6fff;
  --ear-accent-blue: #3b82f6;
  --ear-accent-cyan: #06b6d4;
  --ear-accent-pink: #ec4899;
  --ear-accent-green: #10b981;
  --ear-accent-yellow: #f59e0b;
  --ear-accent-orange: #f97316;
  --ear-accent-red: #ef4444;
  --ear-text-primary: #f1f5f9;
  --ear-text-secondary: #94a3b8;
  --ear-text-muted: #64748b;
  --ear-border: #2a2a5a;

  /* Scale degree colors */
  --deg-1: #ef4444;
  --deg-2: #f97316;
  --deg-3: #f59e0b;
  --deg-4: #10b981;
  --deg-5: #3b82f6;
  --deg-6: #8b5cf6;
  --deg-7: #ec4899;
}

/* ============ SHARED COMPONENTS ============ */
#ear-panel .ear-btn {
  padding: 12px 28px;
  border: none;
  border-radius: 12px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
#ear-panel .ear-btn:hover { transform: translateY(-2px); }
#ear-panel .ear-btn:active { transform: translateY(0); }

#ear-panel .ear-btn-primary {
  background: linear-gradient(135deg, var(--ear-accent-purple), var(--ear-accent-blue));
  color: white;
  box-shadow: 0 4px 15px rgba(124, 111, 255, 0.4);
}
#ear-panel .ear-btn-primary:hover { box-shadow: 0 6px 25px rgba(124, 111, 255, 0.6); }

#ear-panel .ear-btn-secondary {
  background: var(--ear-bg-card);
  color: var(--ear-text-primary);
  border: 1px solid var(--ear-border);
}
#ear-panel .ear-btn-secondary:hover { background: var(--ear-bg-card-hover); }

#ear-panel .ear-btn-large {
  padding: 16px 40px;
  font-size: 18px;
  border-radius: 16px;
}

#ear-panel .ear-btn-small {
  padding: 8px 16px;
  font-size: 13px;
  border-radius: 8px;
}

#ear-panel .ear-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

/* ============ SCREEN MANAGEMENT ============ */
#ear-panel .ear-screen { display: none; }
#ear-panel .ear-screen.active { display: flex; flex-direction: column; }

/* ============ STORY MODE (World Map) ============ */
#ear-panel .story-content {
  flex: 1;
  padding: 24px;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}

#ear-panel .story-header { margin-bottom: 32px; }
#ear-panel .story-header h2 { font-size: 28px; font-weight: 800; margin-bottom: 8px; }
#ear-panel .story-header p { color: var(--ear-text-secondary); font-size: 15px; }

#ear-panel .world-card {
  background: var(--ear-bg-card);
  border: 1px solid var(--ear-border);
  border-radius: 20px;
  padding: 24px;
  margin-bottom: 16px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 20px;
}
#ear-panel .world-card:hover {
  background: var(--ear-bg-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}
#ear-panel .world-card.locked { opacity: 0.5; cursor: default; }
#ear-panel .world-card.locked:hover {
  transform: none; box-shadow: none; background: var(--ear-bg-card);
}

#ear-panel .world-icon {
  width: 64px; height: 64px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; flex-shrink: 0;
}
#ear-panel .world-info { flex: 1; }
#ear-panel .world-info h3 { font-size: 18px; font-weight: 700; margin-bottom: 4px; }
#ear-panel .world-info p { font-size: 13px; color: var(--ear-text-secondary); margin-bottom: 8px; }

#ear-panel .world-progress {
  height: 6px; background: rgba(255,255,255,0.1);
  border-radius: 3px; overflow: hidden; margin-bottom: 6px;
}
#ear-panel .world-progress-fill {
  height: 100%; border-radius: 3px; transition: width 0.3s ease;
}
#ear-panel .world-stars { font-size: 13px; color: var(--ear-text-muted); }
#ear-panel .world-lock { font-size: 24px; color: var(--ear-text-muted); }

/* ============ LEVEL SELECT ============ */
#ear-panel .levels-content {
  flex: 1; padding: 24px; max-width: 900px; margin: 0 auto; width: 100%;
}
#ear-panel .levels-header { margin-bottom: 32px; }
#ear-panel .levels-header h2 { font-size: 28px; font-weight: 800; margin-bottom: 4px; }
#ear-panel .levels-header p { color: var(--ear-text-secondary); }

#ear-panel .levels-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 12px;
}

#ear-panel .level-btn {
  aspect-ratio: 1; border-radius: 16px; border: 2px solid var(--ear-border);
  background: var(--ear-bg-card); color: var(--ear-text-primary);
  font-size: 22px; font-weight: 700; cursor: pointer; transition: all 0.2s ease;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
}
#ear-panel .level-btn:hover {
  background: var(--ear-bg-card-hover); border-color: var(--ear-accent-purple); transform: translateY(-2px);
}
#ear-panel .level-btn .level-stars { font-size: 11px; letter-spacing: 2px; }
#ear-panel .level-btn.locked { opacity: 0.35; cursor: default; }
#ear-panel .level-btn.locked:hover {
  transform: none; border-color: var(--ear-border); background: var(--ear-bg-card);
}
#ear-panel .level-btn.current {
  border-color: var(--ear-accent-purple);
  box-shadow: 0 0 20px rgba(124, 111, 255, 0.3);
  animation: ear-pulse-border 2s ease infinite;
}

@keyframes ear-pulse-border {
  0%, 100% { box-shadow: 0 0 20px rgba(124, 111, 255, 0.3); }
  50% { box-shadow: 0 0 30px rgba(124, 111, 255, 0.5); }
}

/* ============ GAMEPLAY SCREEN ============ */
#ear-panel .game-hud {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 24px; background: rgba(26, 26, 46, 0.95);
  border-bottom: 1px solid var(--ear-border); z-index: 10;
}

#ear-panel .hud-left { display: flex; align-items: center; gap: 16px; }
#ear-panel .hud-back {
  background: none; border: none; color: var(--ear-text-secondary);
  font-size: 20px; cursor: pointer; padding: 4px;
}
#ear-panel .hud-level { font-size: 14px; font-weight: 600; color: var(--ear-text-secondary); }
#ear-panel .hud-center { text-align: center; }
#ear-panel .hud-score {
  font-size: 28px; font-weight: 800;
  background: linear-gradient(135deg, var(--ear-accent-yellow), var(--ear-accent-orange));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
#ear-panel .hud-combo { font-size: 12px; font-weight: 600; color: var(--ear-accent-cyan); min-height: 18px; }
#ear-panel .hud-right { display: flex; align-items: center; gap: 12px; }
#ear-panel .hud-round { font-size: 14px; color: var(--ear-text-secondary); font-weight: 500; }

/* Game area */
#ear-panel .game-area {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  position: relative; overflow: hidden;
  height: calc(100vh - 160px); max-height: 700px;
}

#ear-panel .falling-notes-container {
  position: absolute; inset: 0; pointer-events: none;
}

#ear-panel .falling-note {
  position: absolute; border-radius: 8px; opacity: 0; transition: opacity 0.3s ease;
}
#ear-panel .falling-note.visible { opacity: 1; animation: ear-fall 2s linear forwards; }
#ear-panel .falling-note.landed { opacity: 0.9; animation: none !important; transition: opacity 0.2s ease; }
#ear-panel .falling-note.landed.pulse { animation: ear-note-pulse 0.8s ease infinite !important; opacity: 1 !important; }

@keyframes ear-note-pulse {
  0%, 100% { box-shadow: 0 0 10px currentColor; transform: scale(1); }
  50% { box-shadow: 0 0 25px currentColor; transform: scale(1.08); }
}

@keyframes ear-fall {
  from { transform: translateY(-60px); }
  to { transform: translateY(calc(100vh - 280px)); }
}

/* Game prompts */
#ear-panel .game-prompt { text-align: center; z-index: 5; padding: 20px; flex-shrink: 0; }
#ear-panel .prompt-phase {
  font-size: 14px; font-weight: 600; color: var(--ear-accent-cyan);
  text-transform: uppercase; letter-spacing: 3px; margin-bottom: 16px;
}
#ear-panel .prompt-text { font-size: 32px; font-weight: 800; margin-bottom: 24px; line-height: 1.3; }
#ear-panel .prompt-sub { font-size: 15px; color: var(--ear-text-secondary); margin-bottom: 32px; }

#ear-panel .play-btn {
  width: 80px; height: 80px; border-radius: 50%; border: none;
  background: linear-gradient(135deg, var(--ear-accent-purple), var(--ear-accent-blue));
  color: white; font-size: 32px; cursor: pointer; transition: all 0.2s ease;
  box-shadow: 0 4px 20px rgba(124, 111, 255, 0.5);
  display: flex; align-items: center; justify-content: center;
}
#ear-panel .play-btn:hover {
  transform: scale(1.1); box-shadow: 0 6px 30px rgba(124, 111, 255, 0.7);
}
#ear-panel .play-btn.playing { animation: ear-pulse-play 0.6s ease infinite; }

@keyframes ear-pulse-play {
  0%, 100% { box-shadow: 0 4px 20px rgba(124, 111, 255, 0.5); }
  50% { box-shadow: 0 4px 40px rgba(124, 111, 255, 0.8); }
}

/* Judgment display */
#ear-panel .judgment {
  position: absolute; top: 35%; left: 50%;
  transform: translate(-50%, -50%);
  font-size: 48px; font-weight: 900;
  pointer-events: none; opacity: 0; z-index: 20;
}
#ear-panel .judgment.show { animation: ear-judgment-pop 0.8s ease forwards; }

@keyframes ear-judgment-pop {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(0.5); }
  20% { opacity: 1; transform: translate(-50%, -50%) scale(1.2); }
  40% { transform: translate(-50%, -50%) scale(1); }
  100% { opacity: 0; transform: translate(-50%, -60%) scale(1); }
}

#ear-panel .judgment.perfect { color: var(--ear-accent-cyan); text-shadow: 0 0 30px rgba(6, 182, 212, 0.6); }
#ear-panel .judgment.great { color: var(--ear-accent-green); text-shadow: 0 0 30px rgba(16, 185, 129, 0.6); }
#ear-panel .judgment.good { color: var(--ear-accent-yellow); text-shadow: 0 0 30px rgba(245, 158, 11, 0.6); }
#ear-panel .judgment.miss { color: var(--ear-accent-red); text-shadow: 0 0 30px rgba(239, 68, 68, 0.6); }

/* ============ LASER & PARTICLE EFFECTS ============ */
#ear-panel #fxCanvas,
#ear-panel #ear-fx-canvas {
  position: absolute; inset: 0; pointer-events: none; z-index: 15;
}

#ear-panel .laser-beam {
  position: absolute; width: 6px; pointer-events: none; z-index: 14;
  border-radius: 3px; filter: blur(1px);
  animation: ear-laser-fire 0.35s ease-out forwards;
}
#ear-panel .laser-beam .laser-core {
  position: absolute; inset: 0; border-radius: 3px; background: white; opacity: 0.9;
}
#ear-panel .laser-beam .laser-glow {
  position: absolute; top: -4px; left: -6px; right: -6px; bottom: -4px;
  border-radius: 8px; filter: blur(6px); opacity: 0.7;
}

@keyframes ear-laser-fire {
  0% { opacity: 1; transform: scaleY(1); }
  60% { opacity: 1; }
  100% { opacity: 0; transform: scaleY(1); }
}

/* Solfege floating text */
#ear-panel .solfege-pop {
  position: absolute; pointer-events: none; z-index: 25;
  font-size: 28px; font-weight: 900; text-transform: capitalize; letter-spacing: 1px;
  animation: ear-solfege-rise 1s ease-out forwards;
  text-shadow: 0 0 20px currentColor, 0 0 40px currentColor;
}

@keyframes ear-solfege-rise {
  0% { opacity: 1; transform: translateY(0) scale(1.3); }
  30% { opacity: 1; transform: translateY(-20px) scale(1); }
  100% { opacity: 0; transform: translateY(-70px) scale(0.8); }
}

/* Note destruction flash */
#ear-panel .note-explode { animation: ear-note-boom 0.3s ease-out forwards !important; }

@keyframes ear-note-boom {
  0% { transform: scale(1); opacity: 1; filter: brightness(3); }
  50% { transform: scale(1.8); opacity: 0.6; filter: brightness(2); }
  100% { transform: scale(0); opacity: 0; filter: brightness(1); }
}

/* Screen shake on perfect */
#ear-panel .screen-shake { animation: ear-shake 0.3s ease-out; }

@keyframes ear-shake {
  0%, 100% { transform: translate(0); }
  20% { transform: translate(-3px, 2px); }
  40% { transform: translate(3px, -2px); }
  60% { transform: translate(-2px, -1px); }
  80% { transform: translate(2px, 1px); }
}

/* Scale degree labels */
#ear-panel .degree-labels {
  display: flex; gap: 6px; margin-bottom: 20px; z-index: 5;
  flex-wrap: wrap; justify-content: center; flex-shrink: 0;
}
#ear-panel .degree-label {
  width: 40px; height: 40px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 700; opacity: 0.3; transition: all 0.2s ease;
}
#ear-panel .degree-label.active { opacity: 1; transform: scale(1.15); }
#ear-panel .degree-label.correct { opacity: 1; box-shadow: 0 0 15px currentColor; }

/* ============ PIANO KEYBOARD (ear training) ============ */
#ear-panel .piano-container { width: 100%; padding: 0 20px 20px; z-index: 5; margin-top: auto; flex-shrink: 0; }

#ear-panel .piano {
  display: flex; justify-content: center; position: relative;
  max-width: 700px; margin: 0 auto; height: 160px;
}

#ear-panel .piano-key {
  position: relative; cursor: pointer; transition: all 0.1s ease;
  user-select: none; -webkit-user-select: none;
  display: flex; align-items: flex-end; justify-content: center; padding-bottom: 12px;
}

#ear-panel .piano-key.white {
  width: 56px; height: 160px;
  background: linear-gradient(180deg, #e8e8e8, #ffffff);
  border: 1px solid #ccc; border-radius: 0 0 8px 8px;
  z-index: 1; color: #999; font-size: 12px; font-weight: 600;
}
#ear-panel .piano-key.white:hover { background: linear-gradient(180deg, #d8d8ff, #eeeeff); }
#ear-panel .piano-key.white:active,
#ear-panel .piano-key.white.pressed {
  background: linear-gradient(180deg, #b8b8ff, #d8d8ff); transform: translateY(2px);
}
#ear-panel .piano-key.white.correct-hit {
  background: linear-gradient(180deg, #86efac, #bbf7d0) !important;
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.5);
}
#ear-panel .piano-key.white.wrong-hit {
  background: linear-gradient(180deg, #fca5a5, #fecaca) !important;
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.5);
}

#ear-panel .piano-key.black {
  width: 36px; height: 100px;
  background: linear-gradient(180deg, #1a1a1a, #333);
  border: 1px solid #000; border-radius: 0 0 6px 6px;
  margin: 0 -18px; z-index: 2; color: #666; font-size: 10px; font-weight: 600;
}
#ear-panel .piano-key.black:hover { background: linear-gradient(180deg, #2a2a4a, #444); }
#ear-panel .piano-key.black:active,
#ear-panel .piano-key.black.pressed {
  background: linear-gradient(180deg, #3a3a6a, #555); transform: translateY(2px);
}
#ear-panel .piano-key.black.correct-hit {
  background: linear-gradient(180deg, #059669, #10b981) !important;
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.5);
}
#ear-panel .piano-key.black.wrong-hit {
  background: linear-gradient(180deg, #dc2626, #ef4444) !important;
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.5);
}

#ear-panel .key-label { pointer-events: none; }
#ear-panel .key-shortcut {
  position: absolute; bottom: -24px; font-size: 11px;
  color: var(--ear-text-muted); font-weight: 500;
}

/* ============ RESULTS SCREEN ============ */
#ear-panel .results-card {
  background: var(--ear-bg-card); border: 1px solid var(--ear-border);
  border-radius: 24px; padding: 40px; max-width: 480px;
  width: 100%; text-align: center; margin: 0 auto;
}
#ear-panel .results-stars { font-size: 48px; margin-bottom: 8px; letter-spacing: 8px; }
#ear-panel .results-title { font-size: 32px; font-weight: 800; margin-bottom: 4px; }
#ear-panel .results-subtitle { color: var(--ear-text-secondary); font-size: 15px; margin-bottom: 32px; }
#ear-panel .results-score {
  font-size: 56px; font-weight: 900;
  background: linear-gradient(135deg, var(--ear-accent-yellow), var(--ear-accent-orange));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  margin-bottom: 32px;
}

#ear-panel .results-stats {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 32px;
}
#ear-panel .results-stat {
  background: rgba(255,255,255,0.05); border-radius: 12px; padding: 16px;
}
#ear-panel .results-stat .stat-value { font-size: 24px; font-weight: 700; }
#ear-panel .results-stat .stat-label { font-size: 12px; color: var(--ear-text-muted); margin-top: 4px; }

#ear-panel .results-degrees { margin-bottom: 32px; }
#ear-panel .results-degrees h4 {
  font-size: 14px; color: var(--ear-text-muted); margin-bottom: 12px;
  text-transform: uppercase; letter-spacing: 1px;
}

#ear-panel .degree-bars { display: flex; flex-direction: column; gap: 8px; }
#ear-panel .degree-bar { display: flex; align-items: center; gap: 12px; }
#ear-panel .degree-bar .deg-name { width: 24px; font-size: 14px; font-weight: 700; text-align: right; }
#ear-panel .degree-bar .bar-track {
  flex: 1; height: 8px; background: rgba(255,255,255,0.1);
  border-radius: 4px; overflow: hidden;
}
#ear-panel .degree-bar .bar-fill { height: 100%; border-radius: 4px; transition: width 0.5s ease; }
#ear-panel .degree-bar .bar-pct { width: 40px; font-size: 13px; font-weight: 600; text-align: right; }

#ear-panel .results-xp {
  background: rgba(124, 111, 255, 0.15); border: 1px solid rgba(124, 111, 255, 0.3);
  border-radius: 12px; padding: 16px; margin-bottom: 28px;
  display: flex; align-items: center; justify-content: center; gap: 12px;
}
#ear-panel .xp-amount { font-size: 20px; font-weight: 800; color: var(--ear-accent-purple); }
#ear-panel .xp-label { font-size: 14px; color: var(--ear-text-secondary); }

#ear-panel .results-buttons { display: flex; gap: 12px; }
#ear-panel .results-buttons .ear-btn { flex: 1; justify-content: center; }

/* ============ DAILY CHALLENGE ============ */
#ear-panel .daily-content {
  flex: 1; padding: 24px; max-width: 600px; margin: 0 auto; width: 100%;
  display: flex; flex-direction: column; align-items: center;
}
#ear-panel .daily-header { text-align: center; margin-bottom: 32px; }
#ear-panel .daily-header h2 { font-size: 28px; font-weight: 800; margin-bottom: 4px; }
#ear-panel .daily-date { color: var(--ear-text-muted); font-size: 14px; }

#ear-panel .daily-card {
  background: var(--ear-bg-card); border: 1px solid var(--ear-border);
  border-radius: 24px; padding: 32px; width: 100%;
  text-align: center; margin-bottom: 24px;
}
#ear-panel .daily-difficulty {
  display: inline-block; padding: 6px 16px; border-radius: 20px;
  font-size: 13px; font-weight: 600; margin-bottom: 16px;
}

#ear-panel .daily-info { margin-bottom: 24px; }
#ear-panel .daily-info h3 { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
#ear-panel .daily-info p { color: var(--ear-text-secondary); font-size: 14px; }

#ear-panel .daily-params {
  display: flex; justify-content: center; gap: 24px;
  margin-bottom: 24px; flex-wrap: wrap;
}
#ear-panel .daily-param { text-align: center; }
#ear-panel .daily-param .param-value { font-size: 20px; font-weight: 700; }
#ear-panel .daily-param .param-label { font-size: 11px; color: var(--ear-text-muted); margin-top: 2px; }

/* Streak */
#ear-panel .streak-card {
  background: var(--ear-bg-card); border: 1px solid var(--ear-border);
  border-radius: 16px; padding: 20px; width: 100%; margin-bottom: 24px;
}
#ear-panel .streak-header {
  display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px;
}
#ear-panel .streak-header h4 { font-size: 14px; font-weight: 600; }
#ear-panel .streak-count { font-size: 18px; font-weight: 800; color: var(--ear-accent-orange); }
#ear-panel .streak-days { display: flex; gap: 6px; justify-content: center; }
#ear-panel .streak-day {
  width: 36px; height: 36px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 600;
}
#ear-panel .streak-day.completed {
  background: rgba(245, 158, 11, 0.2); color: var(--ear-accent-yellow);
  border: 1px solid rgba(245, 158, 11, 0.3);
}
#ear-panel .streak-day.today {
  background: rgba(124, 111, 255, 0.2); color: var(--ear-accent-purple);
  border: 2px solid var(--ear-accent-purple);
}
#ear-panel .streak-day.future { background: rgba(255,255,255,0.05); color: var(--ear-text-muted); }

/* ============ ARCADE MODE ============ */
#ear-panel .arcade-content {
  flex: 1; padding: 24px; max-width: 600px; margin: 0 auto; width: 100%;
}
#ear-panel .arcade-header { text-align: center; margin-bottom: 32px; }
#ear-panel .arcade-header h2 { font-size: 28px; font-weight: 800; margin-bottom: 4px; }
#ear-panel .arcade-header p { color: var(--ear-text-secondary); }

#ear-panel .arcade-option { margin-bottom: 20px; }
#ear-panel .arcade-option label {
  display: block; font-size: 13px; font-weight: 600;
  color: var(--ear-text-secondary); margin-bottom: 8px;
  text-transform: uppercase; letter-spacing: 1px;
}
#ear-panel .option-chips { display: flex; gap: 8px; flex-wrap: wrap; }

#ear-panel .chip {
  padding: 10px 18px; border-radius: 10px; border: 1px solid var(--ear-border);
  background: var(--ear-bg-card); color: var(--ear-text-secondary);
  font-size: 14px; font-weight: 500; cursor: pointer; transition: all 0.2s ease;
}
#ear-panel .chip:hover { border-color: var(--ear-accent-purple); color: var(--ear-text-primary); }
#ear-panel .chip.selected {
  background: rgba(124, 111, 255, 0.2); border-color: var(--ear-accent-purple);
  color: var(--ear-accent-purple); font-weight: 600;
}
#ear-panel .arcade-start { margin-top: 32px; text-align: center; }

/* ============ SONG PICKER ============ */
#ear-panel .songpicker-content {
  flex: 1; padding: 24px; max-width: 900px; margin: 0 auto; width: 100%;
}
#ear-panel .songpicker-header { margin-bottom: 24px; }
#ear-panel .songpicker-header h2 { font-size: 28px; font-weight: 800; margin-bottom: 4px; }
#ear-panel .songpicker-header p { color: var(--ear-text-secondary); font-size: 15px; }

#ear-panel .song-filters { display: flex; gap: 8px; margin-bottom: 20px; flex-wrap: wrap; }
#ear-panel .filter-chip {
  padding: 8px 16px; border-radius: 20px; border: 1px solid var(--ear-border);
  background: var(--ear-bg-card); color: var(--ear-text-secondary);
  font-size: 13px; font-weight: 500; cursor: pointer; transition: all 0.2s ease;
}
#ear-panel .filter-chip:hover { border-color: var(--ear-accent-purple); color: var(--ear-text-primary); }
#ear-panel .filter-chip.active {
  background: rgba(124, 111, 255, 0.2); border-color: var(--ear-accent-purple);
  color: var(--ear-accent-purple); font-weight: 600;
}

#ear-panel .song-list { display: flex; flex-direction: column; gap: 10px; }
#ear-panel .song-card {
  background: var(--ear-bg-card); border: 1px solid var(--ear-border); border-radius: 16px;
  padding: 18px 22px; cursor: pointer; transition: all 0.2s ease;
  display: flex; align-items: center; gap: 18px;
}
#ear-panel .song-card:hover {
  background: var(--ear-bg-card-hover); transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}
#ear-panel .song-card-icon {
  width: 48px; height: 48px; border-radius: 12px; display: flex;
  align-items: center; justify-content: center; font-size: 22px; flex-shrink: 0;
}
#ear-panel .song-card-info { flex: 1; }
#ear-panel .song-card-title { font-size: 16px; font-weight: 700; margin-bottom: 2px; }
#ear-panel .song-card-meta {
  font-size: 12px; color: var(--ear-text-muted); display: flex; gap: 12px; flex-wrap: wrap;
}
#ear-panel .song-card-badge { padding: 3px 10px; border-radius: 12px; font-size: 11px; font-weight: 600; }
#ear-panel .badge-beginner { background: rgba(16,185,129,0.15); color: var(--ear-accent-green); }
#ear-panel .badge-intermediate { background: rgba(245,158,11,0.15); color: var(--ear-accent-yellow); }
#ear-panel .badge-advanced { background: rgba(239,68,68,0.15); color: var(--ear-accent-red); }

/* ============ FULL SONG MODE ============ */
#ear-panel .song-hud {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 24px; background: rgba(26,26,46,0.95);
  border-bottom: 1px solid var(--ear-border); z-index: 10;
}
#ear-panel .song-hud-title { font-size: 16px; font-weight: 700; }
#ear-panel .song-hud-timer {
  font-size: 22px; font-weight: 800; font-variant-numeric: tabular-nums;
  color: var(--ear-accent-cyan);
}
#ear-panel .song-hud-progress { font-size: 13px; color: var(--ear-text-secondary); }

#ear-panel .song-body {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center; padding: 24px; gap: 20px;
  position: relative; overflow: hidden;
}

/* Note roll visualization */
#ear-panel .note-roll {
  width: 100%; max-width: 800px; background: var(--ear-bg-card);
  border: 1px solid var(--ear-border); border-radius: 16px;
  padding: 20px; position: relative; overflow: hidden; min-height: 80px;
}
#ear-panel .note-roll-label {
  font-size: 11px; color: var(--ear-text-muted); text-transform: uppercase;
  letter-spacing: 1px; margin-bottom: 10px;
}
#ear-panel .note-roll-notes { display: flex; gap: 4px; flex-wrap: wrap; min-height: 40px; }
#ear-panel .note-roll-note {
  width: 36px; height: 36px; border-radius: 8px; display: flex;
  align-items: center; justify-content: center; font-size: 15px;
  font-weight: 700; transition: all 0.15s ease;
}
#ear-panel .note-roll-note.played { opacity: 0.4; }
#ear-panel .note-roll-note.current {
  transform: scale(1.2); box-shadow: 0 0 15px currentColor;
  animation: ear-note-glow 0.6s ease infinite alternate;
}
#ear-panel .note-roll-note.upcoming { opacity: 0.6; }
#ear-panel .note-roll-note.hidden-upcoming {
  background: rgba(255,255,255,0.08) !important;
  color: var(--ear-text-muted) !important; box-shadow: none !important;
}

@keyframes ear-note-glow {
  from { box-shadow: 0 0 10px currentColor; }
  to { box-shadow: 0 0 25px currentColor; }
}

/* Snippet display */
#ear-panel .snippet-area { width: 100%; max-width: 800px; text-align: center; }
#ear-panel .snippet-label {
  font-size: 12px; color: var(--ear-text-muted); text-transform: uppercase;
  letter-spacing: 1px; margin-bottom: 8px;
}
#ear-panel .snippet-notes {
  display: flex; gap: 6px; justify-content: center; flex-wrap: wrap;
  min-height: 50px; margin-bottom: 12px;
}
#ear-panel .snippet-note {
  width: 44px; height: 44px; border-radius: 10px; display: flex;
  align-items: center; justify-content: center; font-size: 18px;
  font-weight: 800; border: 2px solid var(--ear-border); background: var(--ear-bg-card);
}
#ear-panel .snippet-note.correct {
  border-color: var(--ear-accent-green); color: var(--ear-accent-green);
  background: rgba(16,185,129,0.15);
}
#ear-panel .snippet-note.wrong {
  border-color: var(--ear-accent-red); color: var(--ear-accent-red);
  background: rgba(239,68,68,0.15);
}

/* Input area */
#ear-panel .song-input-area { width: 100%; max-width: 800px; text-align: center; }
#ear-panel .song-input {
  width: 100%; max-width: 400px; padding: 14px 20px;
  font-size: 28px; font-weight: 700; letter-spacing: 8px; text-align: center;
  background: var(--ear-bg-card); border: 2px solid var(--ear-border);
  border-radius: 12px; color: var(--ear-text-primary); outline: none;
  transition: border-color 0.2s ease;
}
#ear-panel .song-input:focus { border-color: var(--ear-accent-purple); }
#ear-panel .song-input.correct-flash {
  border-color: var(--ear-accent-green); box-shadow: 0 0 20px rgba(16,185,129,0.3);
}
#ear-panel .song-input.wrong-flash {
  border-color: var(--ear-accent-red); box-shadow: 0 0 20px rgba(239,68,68,0.3);
}

#ear-panel .song-controls {
  display: flex; gap: 10px; justify-content: center; margin-top: 12px; flex-wrap: wrap;
}
#ear-panel .song-hint { font-size: 13px; color: var(--ear-text-muted); margin-top: 12px; }
#ear-panel .song-hint kbd {
  background: var(--ear-bg-card); border: 1px solid var(--ear-border);
  border-radius: 4px; padding: 2px 6px; font-size: 12px;
}

/* Feedback */
#ear-panel .song-feedback {
  font-size: 20px; font-weight: 700; min-height: 30px; transition: all 0.2s ease;
}
#ear-panel .song-feedback.success { color: var(--ear-accent-green); }
#ear-panel .song-feedback.error { color: var(--ear-accent-red); }
#ear-panel .song-feedback.info { color: var(--ear-accent-cyan); }

/* Completion overlay */
#ear-panel .song-complete {
  position: absolute; inset: 0; background: rgba(26,26,46,0.95);
  display: none; align-items: center; justify-content: center;
  z-index: 50; flex-direction: column; gap: 16px; text-align: center; padding: 24px;
}
#ear-panel .song-complete.active { display: flex; }
#ear-panel .song-complete h2 { font-size: 36px; font-weight: 900; }
#ear-panel .song-complete .final-time {
  font-size: 48px; font-weight: 900;
  background: linear-gradient(135deg, var(--ear-accent-yellow), var(--ear-accent-orange));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

/* ============ MIC / SING MODE ============ */
#ear-panel .mic-toggle {
  background: var(--ear-bg-card); border: 1px solid var(--ear-border);
  color: var(--ear-text-secondary); transition: all 0.2s ease;
}
#ear-panel .mic-toggle.active {
  background: rgba(239, 68, 68, 0.2); border-color: var(--ear-accent-red);
  color: var(--ear-accent-red); box-shadow: 0 0 12px rgba(239, 68, 68, 0.3);
}
#ear-panel .mic-indicator { width: 100%; padding: 0 20px; z-index: 5; }
#ear-panel .mic-pitch-bar {
  max-width: 700px; margin: 0 auto; background: var(--ear-bg-card);
  border: 1px solid var(--ear-border); border-radius: 12px;
  padding: 12px 20px; display: flex; align-items: center; gap: 16px;
}
#ear-panel .mic-pitch-label {
  font-size: 28px; font-weight: 800; min-width: 60px;
  text-align: center; transition: color 0.15s ease;
}
#ear-panel .mic-pitch-note { flex: 1; font-size: 14px; color: var(--ear-text-secondary); }
#ear-panel .mic-volume-bar {
  width: 100px; height: 8px; background: rgba(255,255,255,0.1);
  border-radius: 4px; overflow: hidden;
}
#ear-panel .mic-volume-fill {
  height: 100%; background: var(--ear-accent-green); border-radius: 4px;
  transition: width 0.05s ease; width: 0%;
}
#ear-panel .mic-volume-fill.loud { background: var(--ear-accent-red); }

/* ============ STORY MODE: SHARED HEADER ============ */
#ear-panel .ear-story-header {
  margin-bottom: 24px;
}
#ear-panel .ear-story-header h3 {
  font-size: 24px; font-weight: 800; margin-bottom: 4px;
  color: var(--ear-text-primary);
}
#ear-panel .ear-story-header p {
  font-size: 14px; color: var(--ear-text-secondary);
}

#ear-panel .ear-back-btn {
  background: none; border: none; color: var(--ear-text-secondary);
  font-size: 14px; font-weight: 500; cursor: pointer; padding: 4px 0;
  margin-bottom: 12px; display: inline-block; transition: color 0.15s;
}
#ear-panel .ear-back-btn:hover { color: var(--ear-text-primary); }

/* ============ STORY MODE: WORLD MAP ============ */
#ear-panel .ear-world-list {
  display: flex; flex-direction: column; gap: 12px;
  max-width: 600px; margin: 0 auto;
}

#ear-panel .ear-world-card {
  display: flex; align-items: center; gap: 18px;
  padding: 20px; border-radius: 16px;
  border: 1px solid var(--ear-border);
  background: var(--ear-bg-card);
  cursor: pointer; transition: all 0.2s ease;
  position: relative;
}
#ear-panel .ear-world-card:hover {
  background: var(--ear-bg-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0,0,0,0.3);
}
#ear-panel .ear-world-card.locked {
  opacity: 0.45; cursor: default;
}
#ear-panel .ear-world-card.locked:hover {
  transform: none; box-shadow: none;
  background: var(--ear-bg-card);
}

#ear-panel .ear-world-icon {
  width: 56px; height: 56px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; flex-shrink: 0;
}

#ear-panel .ear-world-info {
  flex: 1; min-width: 0;
}
#ear-panel .ear-world-info h4 {
  font-size: 16px; font-weight: 700; margin-bottom: 2px;
  color: var(--ear-text-primary);
}
#ear-panel .ear-world-info p {
  font-size: 12px; color: var(--ear-text-secondary); margin-bottom: 8px;
}

#ear-panel .ear-deg-tags {
  display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: 8px;
}
#ear-panel .ear-deg-tag {
  padding: 2px 8px; border-radius: 10px;
  font-size: 11px; font-weight: 600;
}

#ear-panel .ear-world-progress-bar {
  height: 5px; background: rgba(255,255,255,0.08);
  border-radius: 3px; overflow: hidden; margin-bottom: 4px;
}
#ear-panel .ear-world-progress-fill {
  height: 100%; border-radius: 3px; transition: width 0.3s ease;
}

#ear-panel .ear-world-progress-text {
  font-size: 11px; color: var(--ear-text-muted);
}

#ear-panel .ear-lock-icon {
  font-size: 20px; color: var(--ear-text-muted);
  flex-shrink: 0;
}

/* ============ STORY MODE: LEVEL GRID ============ */
#ear-panel .ear-level-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: 10px;
  max-width: 600px;
  margin: 0 auto;
}

#ear-panel .ear-level-btn {
  aspect-ratio: 1; border-radius: 14px;
  border: 2px solid var(--ear-border);
  background: var(--ear-bg-card);
  color: var(--ear-text-primary);
  cursor: pointer; transition: all 0.2s ease;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 4px;
  font-family: inherit;
}
#ear-panel .ear-level-btn:hover {
  background: var(--ear-bg-card-hover);
  border-color: var(--ear-accent-purple);
  transform: translateY(-2px);
}

#ear-panel .ear-level-btn.locked {
  opacity: 0.3; cursor: default;
}
#ear-panel .ear-level-btn.locked:hover {
  transform: none; border-color: var(--ear-border);
  background: var(--ear-bg-card);
}

#ear-panel .ear-level-num {
  font-size: 22px; font-weight: 700;
}
#ear-panel .ear-level-stars {
  font-size: 12px; letter-spacing: 1px; line-height: 1;
}
#ear-panel .ear-star {
  color: var(--ear-text-muted); opacity: 0.3;
}
#ear-panel .ear-star.earned {
  color: var(--ear-accent-yellow); opacity: 1;
}
#ear-panel .ear-level-lock {
  font-size: 14px; opacity: 0.5;
}

/* ============ MODE SELECTION GRID ============ */
.ear-mode-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 420px;
  margin: 0 auto;
  padding: 12px 0;
}

.ear-mode-btn {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border-radius: 14px;
  border: 1px solid var(--border, #2a2a5a);
  background: var(--bg-card, #1a1a3e);
  color: var(--text-primary, #f1f5f9);
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
  font-family: inherit;
}

.ear-mode-btn:hover {
  background: var(--bg-card-hover, #222255);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.ear-mode-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.ear-mode-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.ear-mode-text strong {
  font-size: 15px;
  font-weight: 600;
}

.ear-mode-text small {
  font-size: 12px;
  color: var(--text-muted, #64748b);
  font-weight: 400;
}

/* ============ ARCADE SETTINGS ============ */
.ear-arcade-settings {
  max-width: 420px;
  margin: 0 auto;
  padding: 8px 0 20px;
}

.ear-setting-group {
  margin-bottom: 18px;
}

.ear-setting-group > label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ear-text-secondary, #94a3b8);
  margin-bottom: 8px;
}

.ear-degree-toggles {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.ear-deg-toggle {
  cursor: pointer;
}

.ear-deg-toggle input { display: none; }

.ear-deg-toggle span {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  border: 2px solid transparent;
  opacity: 0.4;
  transition: all 0.2s ease;
}

.ear-deg-toggle input:checked + span {
  opacity: 1;
  border-color: currentColor;
}

.ear-chip-row {
  display: flex;
  gap: 8px;
}

.ear-chip {
  padding: 8px 18px;
  border-radius: 10px;
  border: 1px solid var(--ear-border, #2a2a5a);
  background: var(--ear-bg-card, #1a1a3e);
  color: var(--ear-text-primary, #f1f5f9);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.ear-chip:hover {
  background: var(--ear-bg-card-hover, #222255);
}

.ear-chip.selected {
  background: linear-gradient(135deg, #7c3aed, #3b82f6);
  border-color: #7c3aed;
  color: white;
}

.ear-start-btn {
  width: 100%;
  padding: 14px 24px;
  border: none;
  border-radius: 14px;
  background: linear-gradient(135deg, #7c3aed, #3b82f6);
  color: white;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 15px rgba(124, 58, 237, 0.4);
  margin-top: 8px;
}

.ear-start-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(124, 58, 237, 0.6);
}

/* ============ DAILY CHALLENGE ============ */
.ear-daily-card {
  max-width: 420px;
  margin: 0 auto;
  background: var(--ear-bg-card, #1a1a3e);
  border: 1px solid var(--ear-border, #2a2a5a);
  border-radius: 20px;
  padding: 28px;
  text-align: center;
}

.ear-daily-info h4 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.ear-daily-info p {
  font-size: 14px;
  color: var(--ear-text-secondary, #94a3b8);
  margin-bottom: 20px;
}

.ear-daily-loading {
  color: var(--ear-text-muted, #64748b);
  padding: 20px;
}

.ear-daily-result {
  padding: 16px 0;
}

.ear-daily-completed-label {
  font-size: 14px;
  color: #10b981;
  font-weight: 600;
  margin-bottom: 8px;
}

.ear-daily-score {
  font-size: 36px;
  font-weight: 900;
  background: linear-gradient(135deg, #f59e0b, #f97316);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}

/* ============ SONG LIST ============ */
.ear-song-filters {
  display: flex;
  gap: 8px;
  max-width: 500px;
  margin: 0 auto 16px;
  padding: 0 4px;
  flex-wrap: wrap;
}

.ear-song-list {
  max-width: 500px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ear-song-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--ear-border, #2a2a5a);
  background: var(--ear-bg-card, #1a1a3e);
  cursor: pointer;
  transition: all 0.2s ease;
}

.ear-song-card:hover {
  background: var(--ear-bg-card-hover, #222255);
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.ear-song-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.ear-song-info {
  flex: 1;
  min-width: 0;
}

.ear-song-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 2px;
}

.ear-song-meta {
  display: flex;
  gap: 8px;
  font-size: 11px;
  color: var(--ear-text-muted, #64748b);
  flex-wrap: wrap;
}

.ear-song-badge {
  padding: 4px 10px;
  border-radius: 16px;
  font-size: 11px;
  font-weight: 600;
  flex-shrink: 0;
}

/* ============ SONG CHALLENGE GAMEPLAY ============ */
.ear-song-progress {
  max-width: 500px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.ear-song-progress-bar {
  flex: 1;
  height: 8px;
  background: rgba(255,255,255,0.1);
  border-radius: 4px;
  overflow: hidden;
}

.ear-song-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #7c3aed, #3b82f6);
  border-radius: 4px;
  transition: width 0.3s ease;
}

.ear-song-progress-text {
  font-size: 13px;
  font-weight: 600;
  color: var(--ear-text-secondary, #94a3b8);
  white-space: nowrap;
}

.ear-song-play-area {
  max-width: 500px;
  margin: 0 auto;
  text-align: center;
}

.ear-song-score {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--ear-text-primary, #f1f5f9);
}

.ear-song-feedback {
  min-height: 28px;
  font-size: 15px;
  font-weight: 600;
  margin: 12px 0;
  transition: color 0.2s ease;
}

.ear-song-piano {
  margin-top: 16px;
  overflow-x: auto;
}

/* ============ SONG RESULTS ============ */
.ear-results-card {
  max-width: 420px;
  margin: 0 auto;
  background: var(--ear-bg-card, #1a1a3e);
  border: 1px solid var(--ear-border, #2a2a5a);
  border-radius: 20px;
  padding: 32px;
  text-align: center;
}

.ear-results-stars {
  font-size: 36px;
  margin-bottom: 8px;
  letter-spacing: 6px;
}

.ear-results-card h3 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 4px;
}

.ear-results-song {
  font-size: 14px;
  color: var(--ear-text-secondary, #94a3b8);
  margin-bottom: 16px;
}

.ear-results-score {
  font-size: 48px;
  font-weight: 900;
  background: linear-gradient(135deg, #f59e0b, #f97316);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
}

.ear-results-detail {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 24px;
}

.ear-results-actions {
  display: flex;
  gap: 10px;
}

.ear-results-actions .ear-start-btn,
.ear-results-actions .ear-chip {
  flex: 1;
}

/* ============ HUD SELECT CONTROLS ============ */
#ear-panel .hud-select {
  background: var(--ear-bg-card);
  color: var(--ear-text-primary);
  border: 1px solid var(--ear-border);
  border-radius: 6px;
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  outline: none;
}
#ear-panel .hud-select:focus { border-color: var(--ear-accent-purple); }

/* ============ VISIBILITY PRESETS ============ */
#ear-panel .falling-notes-container.vis-full { }
#ear-panel .falling-notes-container.vis-partial {
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 50%);
  mask-image: linear-gradient(to bottom, transparent 0%, black 50%);
}
#ear-panel .falling-notes-container.vis-minimal {
  -webkit-mask-image: linear-gradient(to bottom, black 0%, black 25%, transparent 25%);
  mask-image: linear-gradient(to bottom, black 0%, black 25%, transparent 25%);
}
#ear-panel .falling-notes-container.vis-blind {
  display: none !important;
}

/* ============ SEQUENCE BAR (cursor / in-place editing) ============ */
#ear-panel .sequence-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  z-index: 5;
  min-height: 40px;
  flex-wrap: wrap;
}

#ear-panel .seq-circle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--ear-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: white;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

#ear-panel .seq-circle.empty {
  background: transparent;
  border-color: var(--ear-text-muted);
}

#ear-panel .seq-circle.filled {
  border-width: 2px;
}

#ear-panel .seq-circle.cursor {
  animation: ear-cursor-pulse 1s ease infinite;
  box-shadow: 0 0 12px var(--ear-accent-purple);
  border-color: var(--ear-accent-purple) !important;
}

@keyframes ear-cursor-pulse {
  0%, 100% { box-shadow: 0 0 6px var(--ear-accent-purple); }
  50% { box-shadow: 0 0 18px var(--ear-accent-purple), 0 0 30px rgba(124, 111, 255, 0.3); }
}

/* ============ CUSTOM SEQUENCE MODE ============ */
#ear-panel .ear-custom-editor {
  background: var(--ear-bg-card);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
}

#ear-panel .ear-custom-name-row {
  margin-bottom: 12px;
}

#ear-panel .ear-custom-name-row input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--ear-border);
  border-radius: 8px;
  background: var(--ear-bg-secondary);
  color: var(--ear-text-primary);
  font-size: 14px;
  outline: none;
}
#ear-panel .ear-custom-name-row input:focus {
  border-color: var(--ear-accent-purple);
}

#ear-panel .ear-custom-sequence-bar {
  min-height: 48px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  padding: 10px;
  background: var(--ear-bg-secondary);
  border-radius: 8px;
  margin-bottom: 12px;
}

#ear-panel .ear-custom-placeholder {
  color: var(--ear-text-muted);
  font-size: 13px;
}

#ear-panel .ear-custom-note {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 11px;
  font-weight: 700;
}

#ear-panel .ear-custom-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

#ear-panel .ear-custom-piano {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
}

#ear-panel .ear-custom-key {
  padding: 14px 12px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s;
  min-width: 56px;
  text-align: center;
}
#ear-panel .ear-custom-key:hover {
  transform: translateY(-2px);
  filter: brightness(1.2);
}
#ear-panel .ear-custom-key:active {
  transform: translateY(0);
}

#ear-panel .ear-custom-saved {
  margin-top: 8px;
}
#ear-panel .ear-custom-saved h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--ear-text-secondary);
}

#ear-panel .ear-custom-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  background: var(--ear-bg-card);
  border-radius: 10px;
  margin-bottom: 8px;
  border: 1px solid var(--ear-border);
}
#ear-panel .ear-custom-item:hover {
  background: var(--ear-bg-card-hover);
}

#ear-panel .ear-custom-item-name {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 4px;
}

#ear-panel .ear-custom-item-notes {
  display: flex;
  gap: 3px;
  flex-wrap: wrap;
  align-items: center;
}

#ear-panel .ear-custom-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

#ear-panel .ear-custom-dot-more {
  font-size: 10px;
  color: var(--ear-text-muted);
  margin-left: 2px;
}

#ear-panel .ear-custom-item-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

/* ============ MULTIPLAYER SHARED ============ */
.ear-mp-join {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 24px;
}
.ear-mp-or {
  color: var(--ear-text-secondary, #94a3b8);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.ear-mp-join-row {
  display: flex;
  gap: 8px;
  align-items: center;
}
.ear-mp-code-input {
  background: var(--ear-bg-card, #1e293b);
  color: var(--ear-text-primary, #f1f5f9);
  border: 2px solid var(--ear-border, #334155);
  border-radius: 10px;
  padding: 10px 16px;
  font-size: 18px;
  font-weight: 700;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 4px;
  width: 140px;
  outline: none;
}
.ear-mp-code-input:focus { border-color: var(--ear-accent-purple, #7c3aed); }
.ear-mp-lobby {
  padding: 24px;
  text-align: center;
}
.ear-mp-room-code {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 4px;
  color: var(--ear-accent-purple, #7c3aed);
  margin-bottom: 16px;
}
.ear-mp-players {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.ear-mp-player-tag {
  background: var(--ear-bg-card, #1e293b);
  border: 1px solid var(--ear-border, #334155);
  border-radius: 20px;
  padding: 6px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ear-text-primary, #f1f5f9);
}
.ear-mp-lobby-status {
  color: var(--ear-text-secondary, #94a3b8);
  font-size: 14px;
  margin-bottom: 16px;
}
.ear-mp-results { padding: 24px; }

/* ============ EAR DUEL ============ */
.ear-duel-scores {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 16px;
}
.ear-duel-score-card {
  background: var(--ear-bg-card, #1e293b);
  border: 2px solid var(--ear-border, #334155);
  border-radius: 12px;
  padding: 12px 24px;
  text-align: center;
  min-width: 120px;
}
.ear-duel-score-card.me { border-color: var(--ear-accent-purple, #7c3aed); }
.ear-duel-player-name {
  display: block;
  font-size: 13px;
  color: var(--ear-text-secondary, #94a3b8);
  margin-bottom: 4px;
}
.ear-duel-player-score {
  display: block;
  font-size: 28px;
  font-weight: 800;
  color: var(--ear-text-primary, #f1f5f9);
}
.ear-duel-round-info {
  text-align: center;
  font-size: 14px;
  color: var(--ear-text-secondary, #94a3b8);
  margin-bottom: 12px;
}
.ear-duel-turn-indicator {
  text-align: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--ear-text-secondary, #94a3b8);
  padding: 8px;
  border-radius: 10px;
  margin-bottom: 8px;
}
.ear-duel-turn-indicator.my-turn {
  color: #f59e0b;
  background: #f59e0b22;
  animation: ear-pulse 1s ease-in-out infinite;
}
@keyframes ear-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}
.ear-duel-timer {
  text-align: center;
  font-size: 32px;
  font-weight: 800;
  color: var(--ear-text-primary, #f1f5f9);
  margin-bottom: 12px;
}
.ear-duel-melody-display {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.ear-duel-note-dot {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--ear-bg-card, #1e293b);
  border: 2px solid var(--ear-border, #334155);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--ear-text-secondary, #94a3b8);
  transition: all 0.3s;
}
.ear-duel-feedback {
  text-align: center;
  font-size: 15px;
  font-weight: 600;
  min-height: 24px;
  margin-bottom: 12px;
  transition: color 0.3s;
}
.ear-duel-feedback.correct { color: #10b981; }
.ear-duel-feedback.incorrect { color: #ef4444; }
.ear-duel-piano, .ear-race-piano {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 8px;
}
.ear-duel-key, .ear-race-key {
  min-width: 52px;
  padding: 14px 12px;
  border-radius: 10px;
  border: 2px solid;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.1s, opacity 0.2s;
}
.ear-duel-key:active, .ear-race-key:active { transform: scale(0.95); }
.ear-duel-key:disabled { opacity: 0.3; cursor: not-allowed; }
.ear-duel-final-scores {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 16px 0;
}
.ear-duel-final-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: var(--ear-bg-card, #1e293b);
  border-radius: 10px;
  font-weight: 600;
}
.ear-duel-final-row .rank { font-size: 18px; min-width: 32px; }
.ear-duel-final-row .name { flex: 1; }
.ear-duel-final-row .score { color: #f59e0b; }

/* ============ EAR RACE ============ */
.ear-race-countdown {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 72px;
  font-weight: 900;
  color: var(--ear-accent-purple, #7c3aed);
  z-index: 10;
  animation: ear-countdown-pop 0.5s ease-out;
}
@keyframes ear-countdown-pop {
  from { transform: translate(-50%, -50%) scale(2); opacity: 0; }
  to { transform: translate(-50%, -50%) scale(1); opacity: 1; }
}
.ear-race-track {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
  padding: 0 8px;
}
.ear-race-lane {
  display: flex;
  align-items: center;
  gap: 10px;
}
.ear-race-lane-name {
  min-width: 80px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ear-text-secondary, #94a3b8);
  text-align: right;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ear-race-lane-name.me { color: var(--ear-accent-purple, #7c3aed); }
.ear-race-lane-bar {
  flex: 1;
  height: 28px;
  background: var(--ear-bg-card, #1e293b);
  border-radius: 14px;
  position: relative;
  overflow: hidden;
}
.ear-race-lane-progress {
  height: 100%;
  border-radius: 14px;
  transition: width 0.3s ease;
  min-width: 2px;
}
.ear-race-lane-text {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 11px;
  font-weight: 600;
  color: var(--ear-text-primary, #f1f5f9);
}
.ear-race-color-0 { background: linear-gradient(90deg, #7c3aed, #a855f7); }
.ear-race-color-1 { background: linear-gradient(90deg, #3b82f6, #06b6d4); }
.ear-race-color-2 { background: linear-gradient(90deg, #f59e0b, #f97316); }
.ear-race-color-3 { background: linear-gradient(90deg, #10b981, #06d6a0); }
.ear-race-stats {
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--ear-text-secondary, #94a3b8);
  margin-bottom: 12px;
}
.ear-race-melody-dots {
  display: flex;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.ear-race-dot {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--ear-border, #334155);
  transition: all 0.3s;
}
.ear-race-dot.current {
  border: 2px solid var(--ear-accent-purple, #7c3aed);
  box-shadow: 0 0 8px var(--ear-accent-purple, #7c3aed);
}
.ear-race-dot.done { opacity: 0.7; }
.ear-race-feedback {
  text-align: center;
  font-size: 15px;
  font-weight: 600;
  min-height: 24px;
  margin-bottom: 12px;
  transition: color 0.3s;
}
.ear-race-feedback.correct { color: #10b981; }
.ear-race-feedback.incorrect { color: #ef4444; }
.ear-race-results-table {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 16px 0;
}
.ear-race-result-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--ear-bg-card, #1e293b);
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
}
.ear-race-result-row.me { border: 2px solid var(--ear-accent-purple, #7c3aed); }
.ear-race-result-row .rank { font-size: 18px; min-width: 32px; }
.ear-race-result-row .name { flex: 1; }
.ear-race-result-row .time { color: #3b82f6; min-width: 50px; }
.ear-race-result-row .accuracy { color: #10b981; min-width: 50px; }
.ear-race-result-row .score { color: #f59e0b; min-width: 60px; text-align: right; }

/* ============ ARCADE GAMEPLAY ============ */
.arcade-hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--ear-bg-card, #1a1a3e);
  border-bottom: 1px solid var(--ear-border, #2a2a5a);
}
.arcade-hud-left, .arcade-hud-right {
  display: flex;
  align-items: center;
  gap: 10px;
}
.arcade-hud-center { text-align: center; }
.arcade-hud-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--ear-text-secondary, #94a3b8);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.arcade-score {
  font-size: 28px;
  font-weight: 800;
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  min-width: 80px;
}
.arcade-lives {
  font-size: 18px;
  transition: transform 0.2s ease;
}
.arcade-lives.shake {
  animation: arcade-shake 0.4s ease;
}
@keyframes arcade-shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-4px); }
  40% { transform: translateX(4px); }
  60% { transform: translateX(-3px); }
  80% { transform: translateX(2px); }
}
.arcade-streak {
  font-size: 13px;
  font-weight: 700;
  color: #f59e0b;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.arcade-streak.visible { opacity: 1; }

.arcade-ready-prompt {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 10, 30, 0.8);
  z-index: 20;
  transition: opacity 0.3s ease;
}
.arcade-ready-prompt.fade-out { opacity: 0; }
.arcade-ready-text {
  font-size: 36px;
  font-weight: 800;
  color: white;
  text-shadow: 0 0 30px rgba(124, 58, 237, 0.6);
  animation: arcade-pulse 0.8s ease infinite alternate;
}
@keyframes arcade-pulse {
  from { transform: scale(0.95); opacity: 0.8; }
  to { transform: scale(1.05); opacity: 1; }
}

/* Arcade Game Over */
.arcade-gameover {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 24px;
}
.arcade-gameover-card {
  background: var(--ear-bg-card, #1a1a3e);
  border: 1px solid var(--ear-border, #2a2a5a);
  border-radius: 24px;
  padding: 40px 32px;
  text-align: center;
  max-width: 420px;
  width: 100%;
  animation: arcade-slide-up 0.4s ease;
}
@keyframes arcade-slide-up {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
.arcade-gameover-title {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #ef4444, #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.arcade-gameover-score {
  font-size: 48px;
  font-weight: 800;
  background: linear-gradient(135deg, #7c3aed, #3b82f6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.arcade-gameover-label {
  font-size: 14px;
  color: var(--ear-text-secondary, #94a3b8);
  font-weight: 600;
  margin-bottom: 24px;
}
.arcade-gameover-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 28px;
}
.arcade-stat {
  background: rgba(124, 58, 237, 0.08);
  border-radius: 14px;
  padding: 14px 10px;
}
.arcade-stat-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--ear-text-primary, #f1f5f9);
}
.arcade-stat-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--ear-text-secondary, #94a3b8);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.arcade-gameover-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
}
.arcade-gameover-buttons .ear-btn {
  flex: 1;
  padding: 12px 20px;
  border: none;
  border-radius: 12px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}
.arcade-gameover-buttons .ear-btn-primary {
  background: linear-gradient(135deg, #7c3aed, #3b82f6);
  color: white;
  box-shadow: 0 4px 15px rgba(124, 58, 237, 0.4);
}
.arcade-gameover-buttons .ear-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(124, 58, 237, 0.6);
}
.arcade-gameover-buttons .ear-btn-secondary {
  background: var(--ear-bg-card-hover, #222255);
  color: var(--ear-text-primary, #f1f5f9);
  border: 1px solid var(--ear-border, #2a2a5a);
}
.arcade-gameover-buttons .ear-btn-secondary:hover {
  background: var(--ear-border, #2a2a5a);
}

/* ============ SNIPPET SONG MODE ============ */
.ear-song-mode-wrap {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 0 0 16px;
}
.ear-song-hud-title {
  flex: 1;
  font-size: 16px;
  font-weight: 700;
  margin: 0 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ear-song-hud-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.ear-song-hud-timer {
  font-size: 20px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: #22d3ee;
}
.ear-song-hud-progress {
  font-size: 13px;
  color: var(--ear-text-secondary, #94a3b8);
}

/* Note roll */
.ear-note-roll {
  width: 100%;
  max-width: 800px;
  margin: 0 auto 12px;
  background: var(--ear-bg-card, #1a1a3e);
  border: 1px solid var(--ear-border, #2a2a5a);
  border-radius: 16px;
  padding: 16px 20px;
  overflow: hidden;
  min-height: 70px;
}
.ear-note-roll-label {
  font-size: 11px;
  color: var(--ear-text-muted, #64748b);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.ear-note-roll-notes {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  min-height: 36px;
}
.ear-note-roll-note {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  transition: all 0.15s ease;
}
.ear-note-roll-note.played {
  opacity: 0.4;
}
.ear-note-roll-note.current {
  transform: scale(1.15);
  box-shadow: 0 0 12px currentColor;
  animation: ear-note-glow 0.6s ease infinite alternate;
}
.ear-note-roll-note.hidden-upcoming {
  background: rgba(255,255,255,0.08) !important;
  color: var(--ear-text-muted, #64748b) !important;
  box-shadow: none !important;
}

@keyframes ear-note-glow {
  from { box-shadow: 0 0 8px currentColor; }
  to { box-shadow: 0 0 20px currentColor; }
}

/* Snippet area */
.ear-snippet-area {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}
.ear-snippet-label {
  font-size: 12px;
  color: var(--ear-text-muted, #64748b);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.ear-snippet-notes {
  display: flex;
  gap: 6px;
  justify-content: center;
  flex-wrap: wrap;
  min-height: 48px;
  margin-bottom: 10px;
}
.ear-snippet-note {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  border: 2px solid var(--ear-border, #2a2a5a);
  background: var(--ear-bg-card, #1a1a3e);
  transition: all 0.15s ease;
}
.ear-snippet-note.correct {
  border-color: #10b981;
  color: #10b981;
  background: rgba(16,185,129,0.15);
}
.ear-snippet-note.wrong {
  border-color: #ef4444;
  color: #ef4444;
  background: rgba(239,68,68,0.15);
}

/* Song input area */
.ear-song-input-area {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}
.ear-song-input {
  width: 100%;
  max-width: 420px;
  padding: 12px 18px;
  font-family: 'Inter', monospace;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 6px;
  text-align: center;
  background: var(--ear-bg-card, #1a1a3e);
  border: 2px solid var(--ear-border, #2a2a5a);
  border-radius: 12px;
  color: var(--ear-text-primary, #f1f5f9);
  outline: none;
  transition: border-color 0.2s ease;
  caret-color: transparent;
}
.ear-song-input:focus {
  border-color: #7c3aed;
}
.ear-song-input.correct-flash {
  border-color: #10b981;
  box-shadow: 0 0 20px rgba(16,185,129,0.3);
}
.ear-song-input.wrong-flash {
  border-color: #ef4444;
  box-shadow: 0 0 20px rgba(239,68,68,0.3);
}

/* Song controls */
.ear-song-controls {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 12px;
  flex-wrap: wrap;
}

/* Song hint */
.ear-song-hint {
  font-size: 12px;
  color: var(--ear-text-muted, #64748b);
  margin-top: 10px;
  line-height: 1.8;
}
.ear-song-hint kbd {
  background: var(--ear-bg-card, #1a1a3e);
  border: 1px solid var(--ear-border, #2a2a5a);
  border-radius: 4px;
  padding: 2px 5px;
  font-size: 11px;
  font-family: 'Inter', monospace;
}

/* Song feedback (reuse existing but add states) */
.ear-song-feedback.success { color: #10b981; }
.ear-song-feedback.error { color: #ef4444; }
.ear-song-feedback.info { color: #22d3ee; }

/* Song complete overlay */
.ear-song-complete {
  display: none;
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(10,10,26,0.95);
  z-index: 20;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
}
.ear-song-complete.active {
  display: flex;
}
.ear-song-complete h2 {
  font-size: 28px;
  font-weight: 800;
  margin: 12px 0 4px;
}
.ear-song-final-time {
  font-size: 36px;
  font-weight: 900;
  color: #22d3ee;
  font-variant-numeric: tabular-nums;
  margin: 8px 0;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 640px) {
  #ear-panel .piano-key.white { width: 42px; height: 130px; }
  #ear-panel .piano-key.black { width: 28px; height: 80px; margin: 0 -14px; }
  #ear-panel .piano { height: 130px; }
  #ear-panel .results-score { font-size: 42px; }
  .ear-song-meta { gap: 4px; }
  .ear-song-card { padding: 10px 12px; gap: 10px; }
  #ear-panel .ear-custom-key { min-width: 44px; padding: 10px 8px; font-size: 12px; }
  .ear-duel-key, .ear-race-key { min-width: 44px; padding: 10px 8px; font-size: 12px; }
  .ear-race-lane-name { min-width: 60px; font-size: 11px; }
  .ear-note-roll { padding: 12px; }
  .ear-note-roll-note { width: 28px; height: 28px; font-size: 11px; }
  .ear-snippet-note { width: 36px; height: 36px; font-size: 15px; }
  .ear-song-input { font-size: 20px; letter-spacing: 4px; padding: 10px 14px; }
  .ear-song-hint { font-size: 11px; }
  .ear-song-hud-timer { font-size: 16px; }
}