/* ============================================================
   Practice — Landing Page
   ============================================================ */
.tools-landing {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 20px 40px;
}

.tools-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}

.tools-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 36px 24px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  text-decoration: none;
  color: var(--text-primary);
  transition: transform 0.2s, box-shadow 0.2s;
}

.tools-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.tools-card-icon {
  font-size: 48px;
  color: var(--accent);
}

.tools-card h3 {
  margin: 0;
  font-size: 1.2rem;
}

.tools-card p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ============================================================
   Practice — Metronome
   ============================================================ */
.metronome-wrap {
  max-width: 500px;
  margin: 0 auto;
  padding: 72px 20px 40px;
  text-align: center;
}

.metro-bpm-display {
  font-size: 5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}

.metro-bpm-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.metro-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.metro-slider {
  flex: 1;
  accent-color: var(--accent);
  height: 32px;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  cursor: pointer;
}
.metro-slider::-webkit-slider-runnable-track {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
}
.metro-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: -11px;
}

.metro-bpm-adj {
  width: 40px;
  height: 40px;
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 1.3rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition);
}
.metro-bpm-adj:hover {
  background: var(--accent-subtle);
  border-color: var(--accent);
  color: var(--accent);
  font-size: 1rem;
  text-align: center;
}

.metro-time-sig {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 28px;
}

.metro-beats {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 32px;
}

.metro-beat-dot {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg-tertiary, var(--glass-border));
  border: 2px solid var(--glass-border);
  transition: background 0.05s;
}

.metro-beat-dot.accent {
  border-color: var(--accent);
}

.metro-beat-dot.flash {
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: beatFlash 0.2s ease;
}

@keyframes beatFlash {
  0% { transform: scale(1.3); }
  100% { transform: scale(1); }
}

.metro-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.metro-start-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 32px;
  font-size: 1rem;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
}

.metro-start-btn:hover {
  opacity: 0.9;
}

.metro-start-btn.running {
  background: var(--error, #e53935);
}

.metro-tap-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 24px;
  font-size: 1rem;
  background-image: linear-gradient(var(--accent), var(--accent));
  background-repeat: no-repeat;
  background-position: bottom left;
  background-size: 0% 100%;
  transition: background-size 0.15s ease;
}

/* ── Metronome Timer ── */
.metro-timer {
  font-size: 1.1rem;
  font-variant-numeric: tabular-nums;
  color: var(--text-secondary);
  margin-bottom: 20px;
  opacity: 0.5;
  transition: opacity 0.2s;
}

.metro-timer.active {
  opacity: 1;
  color: var(--accent);
}

/* ── Tempo Presets ── */
.metro-presets {
  display: flex;
  flex-wrap: nowrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  gap: 6px;
  margin-bottom: 20px;
}
.metro-presets::-webkit-scrollbar {
  display: none;
}

.metro-preset-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  padding: 6px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s;
  min-width: 58px;
  flex-shrink: 0;
}

.metro-preset-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.metro-preset-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.metro-preset-name {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.metro-preset-bpm {
  font-size: 0.75rem;
  opacity: 0.7;
}

.metro-preset-btn.active .metro-preset-bpm {
  opacity: 1;
}

/* ============================================================
   Practice — Ear Training
   ============================================================ */
.ear-wrap {
  max-width: 700px;
  margin: 0 auto;
  padding: 72px 20px 40px;
}

.ear-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--glass-border);
  margin-bottom: 24px;
}

.ear-tab {
  flex: 1;
  padding: 12px 16px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
}

.ear-tab:hover {
  color: var(--text-primary);
}

.ear-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.ear-level-row {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  justify-content: center;
}

.ear-score {
  text-align: center;
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-variant-numeric: tabular-nums;
}

.ear-option-row {
  display: flex;
  justify-content: center;
  margin-bottom: 16px;
}

.ear-toggle-label {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  cursor: pointer;
}

.ear-toggle-label input[type="checkbox"] {
  accent-color: var(--accent);
}

.ear-question-area {
  text-align: center;
  margin-bottom: 16px;
}

.ear-question-info {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.ear-input-status {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}

.ear-slots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 12px 0;
}
.ear-slot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  height: 44px;
  padding: 0 8px;
  border: 2px dashed var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: all 0.2s;
}
.ear-slot-correct {
  border: 2px solid var(--success);
  background: rgba(81, 207, 102, 0.12);
  color: var(--success);
}
.ear-slot-wrong {
  border: 2px solid var(--error);
  background: rgba(255, 107, 107, 0.12);
  color: var(--error);
}
.ear-action-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  padding: 12px 0;
}
.ear-action-bar .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 16px;
  min-height: 38px;
  box-sizing: border-box;
}
.ear-action-bar .btn .material-symbols-outlined {
  font-size: 18px;
}
.ear-action-slot {
  display: inline-flex;
}
.ear-btn-row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.ear-next-btn {
  display: inline-block;
  margin-top: 12px;
  margin-left: 8px;
}

.ear-feedback {
  text-align: center;
  font-size: 1rem;
  font-weight: 600;
  min-height: 28px;
  margin-bottom: 16px;
  transition: color 0.15s;
}

.ear-feedback.correct {
  color: var(--success, #4caf50);
}

.ear-feedback-answer {
  color: var(--success);
}

.ear-feedback.wrong {
  color: var(--error, #e53935);
}

/* ── Piano ─────────────────────────────────────────────────── */
.piano-wrap {
  display: flex;
  justify-content: center;
  overflow-x: auto;
  padding: 8px 0;
}

.piano {
  display: flex;
  position: relative;
  height: 160px;
}

.piano-key {
  position: relative;
  cursor: pointer;
  user-select: none;
  transition: background 0.08s;
}

.piano-key.white {
  width: 40px;
  height: 160px;
  background: var(--piano-white, #f8f8f8);
  border: 1px solid var(--piano-white-border, #ccc);
  border-radius: 0 0 6px 6px;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.piano-key.white:active {
  background: var(--piano-white-active, #e0e0e0);
}

.piano-key.black {
  width: 26px;
  height: 100px;
  background: var(--piano-black, #333);
  border: 1px solid var(--piano-black-border, #222);
  border-radius: 0 0 4px 4px;
  margin-left: -13px;
  margin-right: -13px;
  z-index: 2;
}

.piano-key.black.half-left {
  width: 13px;
  margin-left: 0;
  margin-right: -13px;
  border-radius: 0 0 4px 0;
  overflow: hidden;
}

.piano-key.black:active {
  background: var(--piano-black-active, #555);
}

.piano-key-label {
  font-size: 0.7rem;
  font-weight: 700;
  color: #bbb;
  padding-bottom: 6px;
  pointer-events: none;
}

.piano-key.flash-input {
  background: var(--accent) !important;
}

.piano-key.flash-correct {
  background: var(--success, #4caf50) !important;
}

.piano-key.flash-wrong {
  background: var(--error, #e53935) !important;
}

/* ── Answer grid ───────────────────────────────────────────── */
.ear-answer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 16px;
}

.ear-answer-btn {
  padding: 10px 18px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
}

.ear-answer-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.ear-answer-btn.correct-ans {
  background: var(--success, #4caf50);
  color: #fff;
  border-color: var(--success, #4caf50);
}

.ear-answer-btn.wrong-ans {
  background: var(--error, #e53935);
  color: #fff;
  border-color: var(--error, #e53935);
}

/* ── Progression input ─────────────────────────────────────── */
.ear-prog-input {
  margin-top: 16px;
}

.ear-prog-selected {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-wrap: wrap;
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 16px;
  min-height: 40px;
}

.ear-prog-slot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  padding: 6px 10px;
  background: var(--bg-secondary);
  border: 1px dashed var(--glass-border);
  border-radius: 8px;
  color: var(--text-secondary);
}

.ear-prog-slot.filled {
  border-style: solid;
  border-color: var(--accent);
  color: var(--accent);
}

.ear-prog-arrow {
  color: var(--text-secondary);
  font-weight: 400;
  font-size: 0.9rem;
}

.ear-prog-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 12px;
}

.ear-prog-actions {
  text-align: center;
}

/* ============================================================
   Practice — Guitar Tuning
   ============================================================ */
.tuning-wrap {
  max-width: 600px;
  margin: 0 auto;
  padding: 72px 20px 40px;
  text-align: center;
}

.tuning-select-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 28px;
}

.tuning-select-label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.tuning-nav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
}

.tuning-nav-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.tuning-type-select {
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.95rem;
  cursor: pointer;
}

.tuning-info {
  max-width: 420px;
  margin: 0 auto 24px;
  text-align: left;
}

.tuning-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.tuning-guitar {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 0 auto 16px;
  max-width: 420px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 20px 24px;
}

.tuning-string-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 8px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s;
}

.tuning-string-row:hover {
  background: rgba(255, 255, 255, 0.04);
}

.tuning-string-row.active {
  background: rgba(255, 102, 0, 0.12);
}

.tuning-string-num {
  width: 28px;
  font-size: 1.7rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-align: center;
  flex-shrink: 0;
}

.tuning-string-line-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  position: relative;
}

.tuning-string-line {
  width: 100%;
  background: linear-gradient(90deg, var(--text-secondary), var(--accent), var(--text-secondary));
  border-radius: 1px;
  transition: box-shadow 0.2s;
}

.tuning-string-row.active .tuning-string-line {
  box-shadow: 0 0 8px var(--accent);
}

.tuning-string-note {
  width: 40px;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent);
  text-align: center;
  flex-shrink: 0;
}

/* Mic tuner button */
.tuning-mic-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 8px;
  padding: 4px 8px;
  cursor: pointer;
  margin-left: 12px;
  vertical-align: middle;
  transition: all 0.2s;
}
.tuning-mic-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.tuning-mic-btn.active {
  color: #4dabf7;
  border-color: #4dabf7;
  background: rgba(77, 171, 247, 0.12);
}
.tuning-mic-btn .material-symbols-outlined {
  font-size: 40px;
  vertical-align: middle;
}

/* Tuner indicator dot */
.tuning-indicator {
  display: none;
  position: absolute;
  width: 14px;
  height: 14px;
  background: var(--accent);
  border-radius: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  transition: left 0.08s ease-out;
  z-index: 1;
  box-shadow: 0 0 6px var(--accent);
}

/* Detected string highlight */
.tuning-string-row.detected {
  background: rgba(255, 102, 0, 0.08);
}

/* In-tune state (blue) */
.tuning-string-row.in-tune {
  background: rgba(77, 171, 247, 0.12);
}
.tuning-string-row.in-tune .tuning-indicator {
  background: #4dabf7;
  box-shadow: 0 0 12px #4dabf7;
}
.tuning-string-row.in-tune .tuning-string-line {
  background: linear-gradient(90deg, var(--text-secondary), #4dabf7, var(--text-secondary)) !important;
  box-shadow: 0 0 8px #4dabf7;
}
.tuning-string-row.in-tune .tuning-string-note {
  color: #4dabf7 !important;
}

/* Tuner center line (pitch reference) */
.tuning-center-line {
  display: none;
  position: absolute;
  left: 50%;
  top: -4px;
  bottom: -4px;
  width: 2px;
  background: rgba(77, 171, 247, 0.5);
  transform: translateX(-50%);
  z-index: 0;
  pointer-events: none;
}

/* Tuner mode: selected string */
.tuning-string-row.tuner-selected {
  background: rgba(77, 171, 247, 0.08);
  outline: 1px solid rgba(77, 171, 247, 0.3);
  outline-offset: -1px;
  border-radius: 8px;
}
.tuning-string-row.tuner-selected .tuning-string-note {
  color: #4dabf7;
}

.tuning-hint {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.tuning-hint kbd {
  display: inline-block;
  padding: 1px 6px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: 4px;
  font-size: 0.78rem;
  font-family: inherit;
}

.tuning-speed-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 20px;
}

.tuning-speed-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-right: 4px;
}

.tuning-actions {
  display: flex;
  justify-content: center;
  gap: 10px;
}

.tuning-play-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 28px;
  font-size: 1rem;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
}

.tuning-play-btn:hover {
  opacity: 0.9;
}

.tuning-stop-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ============================================================
   Practice — Backing Track
   ============================================================ */
.bt-wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 72px 20px 40px;
}

.bt-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 24px;
}

.bt-control-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.bt-control-group-wide {
  flex: 1;
  min-width: 0;
}

.bt-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

.bt-mode-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.bt-key-btns {
  display: flex;
  gap: 4px;
  white-space: nowrap;
}

.bt-key-btn {
  min-width: 36px;
  flex-shrink: 0;
}

/* Scroll row (single-line with arrows + drag) */
.bt-scroll-row {
  display: flex;
  align-items: center;
  gap: 0;
  position: relative;
}

.bt-scroll-inner {
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  cursor: grab;
}

.bt-scroll-inner::-webkit-scrollbar {
  display: none;
}

.bt-scroll-arrow {
  flex-shrink: 0;
  width: 24px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: 6px;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 700;
  transition: opacity 0.2s, color 0.2s;
  z-index: 1;
}

.bt-scroll-arrow:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.bt-scroll-hidden {
  opacity: 0;
  pointer-events: none;
}

/* Progression section */
.bt-prog-section {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 24px;
  align-items: flex-start;
}

.bt-prog-section .bt-control-group:last-child {
  position: relative;
}

.bt-bar-toggle {
  display: flex;
  gap: 4px;
}

/* Progression trigger + popup */
.bt-prog-trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  transition: border-color 0.2s;
  white-space: nowrap;
}

.bt-prog-trigger:hover {
  border-color: var(--accent);
}

.bt-prog-popup {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 50;
  margin-top: 6px;
  min-width: 240px;
  max-width: 400px;
  max-height: 320px;
  overflow-y: auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.bt-prog-popup.open {
  display: block;
}

.bt-prog-popup-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.bt-prog-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 8px 14px;
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  text-align: left;
  width: 100%;
}

.bt-prog-btn:hover {
  border-color: var(--accent);
}

.bt-prog-btn.active {
  border-color: var(--accent);
  background: rgba(255, 102, 0, 0.1);
}

.bt-prog-btn-name {
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
}

.bt-prog-btn-desc {
  font-size: 0.7rem;
  color: var(--text-secondary);
}

.bt-no-prog {
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: 8px;
}

/* Rhythm section */
.bt-rhythm-section {
  margin-bottom: 24px;
}

.bt-rhythm-btns {
  display: flex;
  gap: 4px;
  white-space: nowrap;
}

.bt-rhythm-btns .filter-btn {
  flex-shrink: 0;
}

/* Key toggle button */
.bt-key-toggle-btn {
  border: 1px dashed var(--text-secondary) !important;
  opacity: 0.7;
  font-size: 0.75rem !important;
  flex-shrink: 0;
}

.bt-key-toggle-btn:hover {
  opacity: 1;
  border-color: var(--accent) !important;
}

/* Rhythm score (SVG notation) */
.bt-rhythm-score {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 24px;
}

.bt-rhythm-bar-card {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bt-rhythm-bar-card svg {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Chord bars */
.bt-bars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  padding: 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  margin-bottom: 24px;
}

.bt-bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px 10px;
  border: 2px solid transparent;
  border-radius: 12px;
  background: var(--bg-primary);
  min-width: 90px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.bt-bar.active {
  border-color: var(--accent);
  box-shadow: 0 0 12px rgba(255, 102, 0, 0.25);
}

.bt-chord-name {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
}

.bt-roman {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 2px;
}

.bt-chord-diagram {
  width: 80px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bt-chord-fallback {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.bt-bar-beats {
  display: flex;
  gap: 6px;
  margin-top: 4px;
}

.bt-beat {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--glass-border);
  transition: background 0.1s, box-shadow 0.1s;
}

.bt-beat.flash {
  background: var(--accent);
  box-shadow: 0 0 8px rgba(255, 102, 0, 0.5);
}

/* Actions */
.bt-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  margin-bottom: 32px;
  padding: 16px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
}

.bt-bpm-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
}

.bt-slider {
  flex: 1;
  min-width: 100px;
  accent-color: var(--accent);
  height: 6px;
}

.bt-bpm-input {
  width: 58px;
  padding: 6px 8px;
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.95rem;
  text-align: center;
}

.bt-action-btns {
  display: flex;
  align-items: center;
  gap: 14px;
}

.bt-play-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 1rem;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: background 0.2s;
}

.bt-play-btn:hover {
  opacity: 0.9;
}

.bt-play-btn.running {
  background: var(--error);
}

.bt-metro-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
}

.bt-metro-toggle input {
  accent-color: var(--accent);
}

.bt-sound-toggle {
  display: flex;
  gap: 4px;
}

.bt-sound-toggle .filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  font-size: 0.8rem;
}

/* Fretboard */
.bt-fretboard-section {
  margin-top: 8px;
}

.bt-position-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 16px;
}

.bt-fb-wrap {
  overflow-x: auto;
}

.bt-fb-grid {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 12px 12px 16px;
  min-width: 640px;
}

.bt-fb-row {
  display: grid;
  grid-template-columns: 24px repeat(16, 1fr);
  gap: 0;
  align-items: center;
}

.bt-fb-header {
  margin-bottom: 2px;
}

.bt-fb-header .bt-fb-cell {
  min-height: 28px;
  flex-direction: column;
  gap: 2px;
}

.bt-fb-fret-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-secondary);
  opacity: 0.3;
}

.bt-fb-fret-dot-double {
  box-shadow: 8px 0 0 0 var(--text-secondary);
  opacity: 0.3;
}

.bt-fb-nut-line {
  margin-left: 24px;
  height: 3px;
  background: var(--text-primary);
  opacity: 0.4;
  border-radius: 1px;
  width: calc((100% - 24px) / 16);
}

.bt-fb-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  position: relative;
}

/* Fret lines (vertical borders) */
.bt-fb-string .bt-fb-cell:not(.bt-fb-label):not(.bt-fb-open) {
  border-left: 1px solid var(--glass-border);
}

/* String lines (horizontal through each row) */
.bt-fb-string {
  position: relative;
}

.bt-fb-string::before {
  content: '';
  position: absolute;
  left: 24px;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  z-index: 0;
  background: var(--text-primary);
  opacity: 0.15;
  height: 1px;
}

.bt-fb-string[data-str="3"]::before { height: 1.5px; }
.bt-fb-string[data-str="4"]::before { height: 2px; }
.bt-fb-string[data-str="5"]::before { height: 2.5px; }
.bt-fb-string[data-str="6"]::before { height: 3px; opacity: 0.2; }

.bt-fb-label {
  font-size: 0.7rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.bt-fb-fret-num {
  font-size: 0.65rem;
  color: var(--text-secondary);
}

.bt-fb-dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 102, 0, 0.15);
  color: var(--text-primary);
  font-size: 0.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  border: 1.5px solid rgba(255, 102, 0, 0.3);
  position: relative;
  z-index: 1;
}

.bt-fb-root {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.bt-fb-dimmed {
  opacity: 0.15;
}

.bt-fb-open {
  border-right: 3px solid var(--text-primary);
  opacity: 0.8;
}

/* ============================================================
   Practice — Responsive
   ============================================================ */
@media (max-width: 768px) {
  .tools-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .bt-bars {
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    padding: 10px;
  }

  .bt-bar {
    min-width: 0;
    padding: 6px 4px;
  }

  .bt-chord-name {
    font-size: 1rem;
  }

  .bt-chord-diagram {
    width: 50px;
    height: 66px;
  }

  .bt-rhythm-score {
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
  }

  .bt-rhythm-bar-card svg {
    width: 100%;
    height: auto;
  }

  .bt-fb-dot {
    width: 22px;
    height: 22px;
    font-size: 0.5rem;
  }

  .bt-fb-cell {
    min-height: 28px;
  }

  .bt-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .bt-action-btns {
    justify-content: center;
  }

  .bt-prog-btn-name {
    font-size: 0.75rem;
  }

  .bt-scroll-arrow {
    width: 20px;
    height: 24px;
    font-size: 0.9rem;
  }

  .bt-prog-popup {
    min-width: 200px;
    max-width: calc(100vw - 40px);
  }

  .metro-bpm-display {
    font-size: 3.5rem;
  }

  .metro-preset-btn {
    min-width: 46px;
    padding: 5px 8px;
  }

  .metro-preset-name {
    font-size: 0.6rem;
  }

  .piano-key.white {
    width: 30px;
    height: 120px;
  }

  .piano-key.black {
    width: 20px;
    height: 76px;
    margin-left: -10px;
    margin-right: -10px;
  }
  .piano-key.black.half-left {
    width: 10px;
    margin-left: 0;
    margin-right: -10px;
  }

  .piano {
    height: 120px;
  }

  .ear-prog-selected {
    font-size: 1rem;
  }

  .ear-prog-slot {
    min-width: 36px;
    padding: 4px 8px;
    font-size: 0.9rem;
  }

  .tuning-guitar {
    padding: 14px 16px;
  }

  .tuning-string-row {
    padding: 10px 4px;
  }

  .tuning-select-row {
    gap: 4px;
  }

}

/* ============================================
   Concert Program
   ============================================ */

/* --- Form (page-based) --- */
.cp-form {
  max-width: 640px;
  margin: 0 auto;
}
.cp-form-group {
  margin-bottom: 16px;
  flex: 1;
}
.cp-form-label {
  display: block;
  margin-bottom: 6px;
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 500;
}
.cp-form-input {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  resize: vertical;
  box-sizing: border-box;
  transition: border-color 0.2s;
}
.cp-form-input:focus {
  outline: none;
  border-color: var(--accent);
}
.cp-form-row {
  display: flex;
  gap: 12px;
}
.cp-form-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}
/* Modal form wrapper (for forms inside Modal.confirm) */
.cp-modal-form {
  text-align: left;
}
.cp-modal-form .cp-form-group {
  margin-bottom: 14px;
}
.cp-modal-form .cp-form-label {
  text-align: left;
}
.cp-modal-form .cp-form-input {
  padding: 9px 12px;
}

/* --- Thumbnail upload (program form) --- */
.cp-thumb-upload {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.cp-thumb-preview {
  position: relative;
  width: 160px;
  height: 120px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
}
.cp-thumb-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.cp-thumb-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: none;
  background: rgba(0,0,0,0.6);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}
.cp-thumb-remove .material-symbols-outlined { font-size: 16px; }
.cp-thumb-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 120px;
  height: 120px;
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.82rem;
  transition: border-color 0.2s, color 0.2s;
}
.cp-thumb-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* --- Toolbar --- */
.cp-toolbar {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 20px;
}

/* --- List --- */
.cp-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.cp-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: var(--text-primary);
  transition: var(--transition);
}
.cp-card:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}
.cp-card-thumb {
  width: 100%;
  height: 180px;
  flex-shrink: 0;
  background: var(--bg-secondary);
}
.cp-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.cp-card-body {
  padding: 18px;
  flex: 1;
  min-width: 0;
}
.cp-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 10px;
}
.cp-card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0;
  line-height: 1.4;
}
.cp-card-date {
  font-size: 0.82rem;
  color: var(--text-muted);
  white-space: nowrap;
}
.cp-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}
.cp-card-meta .material-symbols-outlined {
  font-size: 15px;
  vertical-align: -2px;
  margin-right: 2px;
}
.cp-card-venue, .cp-card-stat {
  display: flex;
  align-items: center;
  gap: 2px;
}
.cp-card-creator {
  display: block;
  margin-top: 8px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.cp-card-new {
  border-style: dashed;
  border-color: var(--border);
  background: transparent;
}
.cp-card-new:hover {
  border-color: var(--accent);
  background: transparent;
  transform: none;
}
.cp-card-new-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px 20px;
  flex: 1;
  gap: 14px;
}
.cp-card-new-icons {
  display: flex;
  gap: 12px;
}
.cp-card-new-icons .material-symbols-outlined {
  font-size: 32px;
  color: var(--accent);
  opacity: 0.8;
}
.cp-card-new-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}
.cp-card-new-btn {
  margin-top: auto;
}

/* --- Detail topbar --- */
.cp-detail-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.cp-detail-topbar-left {
  display: flex;
  gap: 8px;
  align-items: center;
}
.cp-detail-topbar-right {
  display: flex;
  gap: 8px;
  align-items: center;
}

/* --- Detail --- */
.cp-detail { margin-top: 8px; }
.cp-detail-header {
  display: flex;
  gap: 24px;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.cp-detail-thumb {
  width: 200px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.cp-detail-thumb img {
  width: 100%;
  display: block;
  border-radius: var(--radius-sm);
}
.cp-detail-info { flex: 1; min-width: 0; }
.cp-detail-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 12px;
}
.cp-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}
.cp-detail-meta .material-symbols-outlined {
  font-size: 17px;
  vertical-align: -3px;
  margin-right: 4px;
  color: var(--accent);
}
.cp-detail-desc {
  margin-top: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.detail-actions {
  display: flex;
  gap: 8px;
}

/* --- Section --- */
.cp-section { margin-bottom: 32px; }
.cp-section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.cp-section-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0;
}

/* --- Parts accordion --- */
.cp-part {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  overflow: hidden;
}
.cp-part-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  cursor: pointer;
  user-select: none;
  transition: background 0.15s;
}
.cp-part-header:hover { background: var(--bg-card-hover); }
.cp-part-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 0;
}
.cp-part-number {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
  white-space: nowrap;
}
.cp-part-title { font-weight: 600; font-size: 0.95rem; }
.cp-part-type {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(255,102,0,0.1);
  padding: 2px 8px;
  border-radius: 10px;
  white-space: nowrap;
}
.cp-part-pcount {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
}
.cp-part-desc { font-size: 0.82rem; color: var(--text-muted); }
.cp-part-actions { display: flex; align-items: center; gap: 4px; }
.cp-part-chevron { transition: transform 0.2s; color: var(--text-muted); }
.cp-part.open .cp-part-chevron { transform: rotate(180deg); }
.cp-part-body { display: none; padding: 0 16px 14px; }
.cp-part.open .cp-part-body { display: block; }
.cp-part-btns { display: flex; gap: 8px; margin-bottom: 12px; }

/* --- Part images --- */
.cp-part-images {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.cp-part-img-item {
  position: relative;
  width: 80px;
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
}
.cp-part-img-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: pointer;
}
.cp-part-img-delete {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: none;
  background: rgba(0,0,0,0.6);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  opacity: 0;
  transition: opacity 0.15s;
}
.cp-part-img-item:hover .cp-part-img-delete { opacity: 1; }
.cp-part-img-delete .material-symbols-outlined { font-size: 14px; }
.cp-part-img-add {
  width: 80px;
  height: 80px;
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  transition: border-color 0.2s, color 0.2s;
}
.cp-part-img-add:hover { border-color: var(--accent); color: var(--accent); }
.cp-part-img-add .material-symbols-outlined { font-size: 24px; }

/* --- Part members --- */
.cp-part-members { margin-top: 12px; }
.cp-part-members-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin: 0 0 8px;
}

/* --- Songs --- */
.cp-song-list { margin-bottom: 10px; }
.cp-song-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.cp-song-row:last-child { border-bottom: none; }
.cp-song-order {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent);
  min-width: 24px;
  text-align: center;
}
.cp-song-info { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.cp-song-title { font-weight: 500; }
.cp-song-artist { font-size: 0.8rem; color: var(--text-muted); }
.cp-song-actions { display: flex; gap: 2px; }

/* --- Icon buttons --- */
.btn-icon-sm {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 4px;
  padding: 0;
  transition: var(--transition);
}
.btn-icon-sm:hover { color: var(--text-primary); background: var(--bg-card-hover); }
.btn-icon-sm .material-symbols-outlined { font-size: 18px; }

/* --- Members --- */
.cp-member-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.cp-member-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.85rem;
}
.cp-member-info { display: flex; align-items: center; gap: 6px; }
.cp-member-name { font-weight: 500; }
.cp-member-role { font-size: 0.76rem; color: var(--text-muted); }
.cp-member-actions { display: flex; gap: 0; }

/* --- Btn danger outline --- */
.btn-danger-outline { color: var(--danger) !important; border-color: var(--danger) !important; }
.btn-danger-outline:hover { background: var(--danger) !important; color: #fff !important; }

/* ============================================
   Pamphlet Preview
   ============================================ */
.cp-pamphlet-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.85);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-y: auto;
  padding: 20px;
}
.cp-pamphlet { width: 100%; max-width: 700px; }
.cp-pamphlet-toolbar {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-bottom: 16px;
  position: sticky;
  top: 0;
  z-index: 10;
}
.cp-pamphlet-pages { display: flex; flex-direction: column; gap: 24px; }
.cp-pamphlet-page {
  background: #1a1a28;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 40px;
  min-height: 400px;
  display: flex;
  flex-direction: column;
}
[data-theme="light"] .cp-pamphlet-page {
  background: #fff; border-color: #ddd; box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

/* Cover */
.cp-pamphlet-cover { justify-content: center; align-items: center; text-align: center; min-height: 500px; }
.cp-pamphlet-cover-content { display: flex; flex-direction: column; align-items: center; gap: 16px; }
.cp-pamphlet-cover-img { max-width: 280px; max-height: 200px; border-radius: var(--radius-sm); object-fit: contain; }
.cp-pamphlet-cover-deco { font-size: 3rem; color: var(--accent); opacity: 0.6; }
.cp-pamphlet-cover-title { font-size: 2rem; font-weight: 700; margin: 0; line-height: 1.3; }
.cp-pamphlet-cover-date { font-size: 1.1rem; color: var(--text-secondary); margin: 0; }
.cp-pamphlet-cover-venue { font-size: 0.95rem; color: var(--text-muted); margin: 0; }
.cp-pamphlet-cover-desc { font-size: 0.88rem; color: var(--text-secondary); margin: 16px 0 0; max-width: 400px; }
.cp-pamphlet-cover-footer { margin-top: 40px; font-size: 0.85rem; color: var(--text-muted); letter-spacing: 2px; }

/* Part pages */
.cp-pamphlet-part-header { text-align: center; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.cp-pamphlet-part-num { font-size: 0.78rem; font-weight: 700; color: var(--accent); text-transform: uppercase; letter-spacing: 2px; }
.cp-pamphlet-part-title { font-size: 1.4rem; font-weight: 600; margin: 8px 0 0; }
.cp-pamphlet-part-desc { font-size: 0.85rem; color: var(--text-muted); margin: 6px 0 0; }
.cp-pamphlet-part-images {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 20px;
}
.cp-pamphlet-part-images img {
  max-height: 140px;
  border-radius: var(--radius-sm);
  object-fit: contain;
}
.cp-pamphlet-part-members {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.cp-pamphlet-part-members-label { font-weight: 600; margin-right: 6px; }

.cp-pamphlet-song-list { flex: 1; }
.cp-pamphlet-song {
  display: flex; align-items: baseline; gap: 12px; padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
[data-theme="light"] .cp-pamphlet-song { border-bottom-color: rgba(0,0,0,0.06); }
.cp-pamphlet-song:last-child { border-bottom: none; }
.cp-pamphlet-song-num { font-size: 0.85rem; font-weight: 700; color: var(--accent); min-width: 28px; }
.cp-pamphlet-song-info { flex: 1; min-width: 0; }
.cp-pamphlet-song-title { font-size: 1rem; font-weight: 500; }
.cp-pamphlet-song-artist { display: block; font-size: 0.82rem; color: var(--text-muted); margin-top: 2px; }

/* Members page */
.cp-pamphlet-members-page { align-items: center; }
.cp-pamphlet-members-title { font-size: 1.3rem; font-weight: 600; margin: 0 0 24px; text-align: center; }
.cp-pamphlet-members-list { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px 24px; max-width: 500px; }
.cp-pamphlet-member { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.cp-pamphlet-member-name { font-weight: 500; font-size: 0.95rem; }
.cp-pamphlet-member-role { font-size: 0.78rem; color: var(--text-muted); }

/* ============================================
   Print Styles
   ============================================ */
@media print {
  body * { visibility: hidden; }
  .cp-pamphlet-overlay, .cp-pamphlet-overlay * { visibility: visible; }
  .cp-pamphlet-overlay { position: absolute; top: 0; left: 0; background: #fff; padding: 0; }
  .cp-pamphlet { max-width: 100%; }
  .no-print { display: none !important; }
  .cp-pamphlet-page {
    background: #fff; border: none; box-shadow: none; color: #000;
    page-break-after: always; min-height: auto; padding: 40px 30px;
  }
  .cp-pamphlet-page:last-child { page-break-after: avoid; }
  .cp-pamphlet-pages { gap: 0; }
  .cp-pamphlet-cover-deco { color: #333; }
  .cp-pamphlet-part-num { color: #333; }
  .cp-pamphlet-song-num { color: #333; }
  .cp-pamphlet-song { border-bottom-color: #eee; }

}

/* ============================================
   Concert Program Responsive
   ============================================ */
@media (max-width: 768px) {
  .cp-list { grid-template-columns: 1fr; }
  .cp-card-thumb { height: 160px; }
  .cp-card-header { flex-direction: column; gap: 4px; }
  .cp-form-row { flex-direction: column; gap: 0; }
  .cp-detail-header { flex-direction: column; gap: 16px; }
  .cp-detail-thumb { width: 100%; }
  .cp-detail-title { font-size: 1.2rem; }
  .cp-detail-meta { flex-direction: column; gap: 8px; }
  .cp-song-row { flex-wrap: wrap; gap: 4px 10px; }
  .cp-member-list { gap: 6px; }
  .cp-pamphlet-page { padding: 32px 20px; }
  .cp-pamphlet-cover-title { font-size: 1.5rem; }
  .cp-pamphlet-part-title { font-size: 1.15rem; }
  .cp-detail-topbar { flex-wrap: wrap; }
  .cp-detail-topbar-left { flex-wrap: wrap; }
  .cp-detail-topbar-right { flex-wrap: wrap; }
}

/* ── Concert Program Comments ── */
.cp-comments-section { border-top: 1px solid var(--border); padding-top: 16px; }
.cp-comment-count { font-size: 0.85rem; color: var(--text-muted); font-weight: 400; margin-left: 4px; }
.cp-comment-list { margin-bottom: 12px; }
.cp-comment-form {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.cp-comment-nick {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 5px 10px;
  color: var(--text);
  font-size: 0.85rem;
  width: 160px;
}
.cp-comment-nick[readonly] { color: var(--text-secondary); background: var(--bg-secondary); cursor: default; }
.cp-comment-input-row { display: flex; gap: 8px; align-items: flex-end; }
.cp-comment-text {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  color: var(--text);
  font-size: 0.88rem;
  resize: vertical;
  font-family: inherit;
  min-height: 56px;
}
.cp-comment-text:focus { outline: none; border-color: var(--accent); }

/* Part comment toggle */
.cp-part-comment-wrap {
  margin-top: 12px;
  border-top: 1px dashed var(--border);
  padding-top: 8px;
}
.cp-part-comment-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.82rem;
  cursor: pointer;
  padding: 2px 0;
  transition: color 0.15s;
}
.cp-part-comment-toggle:hover { color: var(--text-secondary); }
.cp-part-comment-toggle .material-symbols-outlined { font-size: 16px; }
.cp-part-comment-count { font-size: 0.78rem; }
.cp-part-comment-area { padding-top: 8px; }

/* ============================================================
   Circle of Fifths (5도권표)
   ============================================================ */
.cof-page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 72px 20px 40px;
}

.cof-header {
  text-align: center;
  margin-bottom: 32px;
  position: relative;
}
.cof-header .tools-back-link { top: 50%; transform: translateY(-50%); }

/* Common tools header with back link */
.tools-sub-header {
  position: relative;
  text-align: center;
  margin-bottom: 20px;
}
.tools-back-link {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  transition: color 0.15s;
}
.tools-back-link .material-symbols-outlined { font-size: 36px; }
.tools-back-link:hover { color: var(--accent); }

.cof-manual-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 2px;
  vertical-align: middle;
  line-height: 1;
  transition: color 0.2s;
}
.cof-manual-btn:hover { color: var(--accent); }
.cof-manual-btn .material-symbols-outlined { font-size: 20px; }

/* Manual modal */
.cof-manual-modal .modal-container { max-width: 640px; }
.cof-manual { line-height: 1.7; }
.cof-manual section { margin-bottom: 20px; }
.cof-manual section:last-child { margin-bottom: 0; }
.cof-manual h4 {
  font-size: 1.05rem;
  color: var(--accent);
  margin: 0 0 6px;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 4px;
}
.cof-manual p { margin: 4px 0; font-size: 0.92rem; color: var(--text-secondary); }
.cof-manual ul { margin: 6px 0; padding-left: 20px; font-size: 0.92rem; color: var(--text-secondary); }
.cof-manual li { margin-bottom: 4px; }
.cof-manual strong { color: var(--text-primary); }
.cof-manual-fingers {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 8px;
  padding: 10px 14px;
  background: var(--bg-secondary);
  border-radius: 8px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}
.cof-manual-fingers strong { color: var(--accent); }

.cof-subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 4px;
}

.cof-main {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 32px;
  align-items: start;
}

.cof-circle-section {
  position: sticky;
  top: 80px;
}

.cof-circle-wrap {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  aspect-ratio: 1;
}

.cof-diagram-toggle {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin-top: 10px;
}

.cof-diagram-btn {
  padding: 5px 14px;
  border: 1px solid var(--glass-border);
  border-radius: 6px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.15s;
}

.cof-diagram-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.cof-diagram-btn:hover:not(.active) {
  border-color: var(--accent);
  color: var(--accent);
}

.cof-svg {
  width: 100%;
  height: 100%;
  transform-origin: center center;
}

.cof-click-area:hover {
  fill: rgba(255, 102, 0, 0.08) !important;
}


/* Detail section */
.cof-detail-section {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.cof-section-block {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 20px;
}

.cof-section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.05rem;
  margin: 0 0 16px 0;
  color: var(--text-primary);
}
.cof-section-title .material-symbols-outlined {
  font-size: 20px;
  color: var(--accent);
}

/* Key info grid */
.cof-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.cof-info-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 12px;
  background: var(--bg-primary);
  border-radius: 10px;
}

.cof-info-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.cof-info-value {
  font-size: 0.95rem;
  color: var(--text-primary);
  font-weight: 500;
}

.cof-staff-wrap {
  margin-top: 4px;
  overflow-x: auto;
}

.cof-staff-svg {
  width: 100%;
  max-width: 360px;
  height: auto;
}

/* Diatonic chords grid */
.cof-chords-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
}

.cof-chord-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 10px 4px;
  background: var(--bg-primary);
  border-radius: 10px;
  text-align: center;
  border: 1px solid transparent;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.cof-chord-card.cof-deg-1 {
  border-color: var(--accent);
  box-shadow: 0 0 12px rgba(255, 102, 0, 0.25);
}
.cof-chord-card.cof-deg-1 .cof-chord-roman {
  font-size: 1.05rem;
}

.cof-chord-card.cof-deg-45 {
  border-color: rgba(255, 102, 0, 0.35);
  box-shadow: 0 0 6px rgba(255, 102, 0, 0.1);
}

.cof-chord-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.cof-chord-roman {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent);
}

.cof-chord-name {
  font-size: 0.82rem;
  color: var(--text-primary);
  font-weight: 600;
}

.cof-chord-diagram {
  width: 80px;
  height: 100px;
}

.cof-chord-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: center;
}

.cof-chord-type-badge {
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
}
.cof-chord-type-badge.maj { background: rgba(76, 175, 80, 0.15); color: #4caf50; }
.cof-chord-type-badge.min { background: rgba(33, 150, 243, 0.15); color: #2196f3; }
.cof-chord-type-badge.dim { background: rgba(255, 152, 0, 0.15); color: #ff9800; }

.cof-chord-open-badge,
.cof-chord-barre-badge {
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 500;
}
.cof-chord-open-badge { background: rgba(76, 175, 80, 0.1); color: #66bb6a; }
.cof-chord-barre-badge { background: rgba(255, 152, 0, 0.1); color: #ffa726; }

.cof-chord-caged {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.cof-chord-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.cof-prog-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  position: relative;
  flex-wrap: wrap;
}

.cof-arp-help-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0;
  transition: color 0.15s;
}

.cof-arp-help-btn:hover {
  color: var(--accent);
}

.cof-arp-help-btn .material-symbols-outlined {
  font-size: 18px;
}

.cof-arp-help-popup {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 100;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  max-width: 340px;
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.cof-arp-help-popup.open {
  display: block;
}

.cof-arp-help-title {
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  font-size: 0.92rem;
}

.cof-arp-help-popup p {
  margin: 0 0 10px;
}

.cof-arp-help-fingers {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 10px;
}

.cof-arp-help-fingers strong {
  color: var(--accent);
  font-size: 0.9rem;
}

.cof-arp-help-ex {
  padding-top: 8px;
  border-top: 1px solid var(--glass-border);
  color: var(--text-muted);
  font-size: 0.8rem;
}

.cof-prog-arp-select,
.cof-prog-bpm-select {
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid var(--glass-border);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.82rem;
  cursor: pointer;
  outline: none;
}

.cof-prog-arp-select:focus,
.cof-prog-bpm-select:focus {
  border-color: var(--accent);
}

.cof-prog-bpm-select {
  width: 90px;
}

.cof-prog-chord[data-chord-name] {
  cursor: pointer;
  transition: all 0.15s;
}

.cof-prog-chord[data-chord-name]:hover {
  color: var(--accent);
}

/* Progression list */
.cof-prog-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cof-prog-item {
  background: var(--bg-primary);
  border-radius: 10px;
  padding: 12px 16px;
  transition: background 0.15s;
}

.cof-prog-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.cof-prog-body {
  flex: 1;
  min-width: 0;
}

.cof-prog-header {
  display: flex;
  align-items: center;
  cursor: pointer;
  gap: 12px;
}

.cof-prog-play-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.15s;
}
.cof-prog-play-btn:hover {
  color: var(--accent);
  transform: scale(1.1);
}
.cof-prog-play-btn.playing {
  background: var(--error);
  color: #fff;
}
.cof-prog-play-btn.playing:hover {
  opacity: 0.85;
}
.cof-prog-play-btn:active {
  transform: scale(0.95);
}
.cof-prog-play-btn .material-symbols-outlined {
  font-size: 20px;
}

.cof-prog-name {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
}

.cof-prog-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.cof-prog-chords {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.cof-prog-chord {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  transition: all 0.15s;
}
.cof-prog-chord.playing {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  transform: scale(1.1);
}

/* Chord card click feedback */
.cof-chord-card[data-chord] {
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
}
.cof-chord-card[data-chord]:hover {
  border-color: rgba(255, 102, 0, 0.3);
}
.cof-chord-card[data-chord]:active,
.cof-chord-card.cof-chord-playing {
  transform: scale(0.95);
  border-color: var(--accent) !important;
  box-shadow: 0 0 12px rgba(255, 102, 0, 0.3);
}

.cof-prog-arrow {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.cof-prog-diagrams {
  display: none;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--glass-border);
}

.cof-prog-item.expanded .cof-prog-diagrams {
  display: flex;
}

.cof-prog-diagram-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.cof-prog-diagram {
  width: 80px;
  height: 100px;
}

.cof-prog-diagram-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 900px) {
  .cof-main {
    grid-template-columns: 1fr;
  }
  .cof-circle-section {
    position: static;
  }
  .cof-circle-wrap {
    max-width: 420px;
  }
}

@media (max-width: 768px) {
  .cof-page {
    padding: 60px 12px 32px;
  }
  .cof-chords-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .cof-info-grid {
    grid-template-columns: 1fr;
  }
  .cof-circle-wrap {
    max-width: 360px;
  }
}

@media (max-width: 480px) {
  .cof-chords-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .cof-circle-wrap {
    max-width: 320px;
  }
}

/* ============================================================
   Quiz
   ============================================================ */
.quiz-wrap {
  max-width: 800px;
  margin: 0 auto;
  padding: 72px 20px 40px;
}

.quiz-header {
  text-align: center;
  margin-bottom: 24px;
  position: relative;
}

.quiz-header h2 {
  margin: 0;
  font-size: 1.6rem;
}

.quiz-subtitle {
  margin: 4px 0 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.quiz-back {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  text-decoration: none;
  display: flex;
  align-items: center;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: 50%;
  transition: all var(--transition);
}

.quiz-back:hover {
  color: var(--accent);
  background: var(--bg-card-hover);
}

/* Level Select */
.quiz-level-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

.quiz-level-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 20px 12px;
  background: var(--bg-secondary);
  border: 2px solid var(--glass-border);
  border-radius: 12px;
  cursor: pointer;
  transition: transform 0.2s, border-color 0.2s;
  color: var(--text-primary);
}

.quiz-level-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.quiz-level-card:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.quiz-level-passed {
  border-color: var(--success);
  background: rgba(76, 175, 80, 0.08);
}

.quiz-level-attempted {
  border-color: var(--warning);
}

.quiz-level-num {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
}

.quiz-level-title {
  font-size: 0.95rem;
  font-weight: 500;
}

.quiz-level-score {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.quiz-level-new {
  color: var(--accent);
  font-weight: 500;
}

.quiz-level-check {
  position: absolute;
  top: 6px;
  right: 6px;
  font-size: 20px;
  color: var(--success);
}

.quiz-user-level {
  text-align: center;
  margin-top: 20px;
  padding: 12px;
  background: var(--bg-secondary);
  border-radius: 8px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* Progress Bar */
.quiz-progress-bar {
  width: 100%;
  height: 4px;
  background: var(--glass-border);
  border-radius: 2px;
  margin-bottom: 20px;
  overflow: hidden;
}

.quiz-progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.3s;
}

/* Question */
.quiz-question-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.quiz-level-tag {
  font-size: 0.8rem;
  padding: 3px 10px;
  background: var(--accent);
  color: #fff;
  border-radius: 12px;
  font-weight: 500;
}

.quiz-q-count {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}

.quiz-question-text {
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: 24px;
  padding: 16px;
  background: var(--bg-secondary);
  border-radius: 10px;
  border-left: 4px solid var(--accent);
}

/* MC Options */
.quiz-option {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 14px 16px;
  margin-bottom: 8px;
  background: var(--bg-secondary);
  border: 2px solid var(--glass-border);
  border-radius: 10px;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  color: var(--text-primary);
  text-align: left;
  font-size: 0.95rem;
}

.quiz-option:hover {
  border-color: var(--accent);
}

.quiz-option.selected {
  border-color: var(--accent);
  background: rgba(255, 102, 0, 0.1);
}

.quiz-option-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--glass-border);
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.quiz-option.selected .quiz-option-label {
  background: var(--accent);
  color: #fff;
}

/* SA Input */
.quiz-sa-wrap {
  max-width: 400px;
}

.quiz-sa-input {
  width: 100%;
  padding: 14px 16px;
  font-size: 1.1rem;
  background: var(--bg-secondary);
  border: 2px solid var(--glass-border);
  border-radius: 10px;
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.2s;
}

.quiz-sa-input:focus {
  border-color: var(--accent);
}

/* Nav */
.quiz-nav {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--glass-border);
}

/* Result */
.quiz-result {
  text-align: center;
}

.quiz-result-icon {
  margin-bottom: 8px;
}

.quiz-result-title {
  font-size: 1.4rem;
  margin: 0 0 8px;
}

.quiz-result-score {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.quiz-result-num {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent);
}

.quiz-result-msg {
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.quiz-result-login {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.quiz-result-detail {
  text-align: left;
  margin: 24px 0;
}

.quiz-result-detail h4 {
  margin: 0 0 12px;
  font-size: 1rem;
}

.quiz-result-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.quiz-result-item {
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--bg-secondary);
  font-size: 0.9rem;
}

.quiz-result-item.wrong {
  border-left: 3px solid var(--error);
}

.quiz-result-item.correct {
  border-left: 3px solid var(--success);
}

.quiz-result-q {
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.quiz-result-mark {
  font-weight: 700;
  flex-shrink: 0;
}

.quiz-result-item.correct .quiz-result-mark { color: var(--success); }
.quiz-result-item.wrong .quiz-result-mark { color: var(--error); }

.quiz-result-ans {
  margin-top: 4px;
  padding-left: 24px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.wrong-ans {
  color: var(--error);
  text-decoration: line-through;
}

.quiz-result-btns {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 16px;
}

@media (max-width: 480px) {
  .quiz-level-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
  .quiz-level-card {
    padding: 14px 8px;
  }
  .quiz-question-text {
    font-size: 1rem;
  }
}

/* ─── Speed Quiz ──────────────────────────────────── */

.sq-cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

.sq-cat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 24px 16px;
  background: var(--bg-secondary);
  border: 2px solid var(--glass-border);
  border-radius: 12px;
  cursor: pointer;
  transition: transform 0.2s, border-color 0.2s;
  color: var(--text-primary);
  text-align: center;
}
.sq-cat-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}
.sq-cat-card h3 { margin: 0; font-size: 1.05rem; }
.sq-cat-card p { margin: 0; font-size: 0.85rem; color: var(--text-secondary); }
.sq-cat-icon { font-size: 2rem; color: var(--accent); }
.sq-cat-lv { font-size: 0.8rem; font-weight: 700; color: var(--accent); }
.sq-level-head { margin-bottom: 16px; }
.sq-level-head h3 { margin: 8px 0 0; font-size: 1.1rem; }
.sq-back-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.85rem;
  padding: 0;
}
.sq-back-link:hover { color: var(--accent); }
.sq-cat-time {
  font-size: 0.75rem;
  padding: 2px 8px;
  background: var(--accent);
  color: #fff;
  border-radius: 10px;
  margin-top: 4px;
}

/* Countdown */
.sq-countdown {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
}
.sq-countdown span {
  font-size: 4rem;
  font-weight: 800;
  color: var(--accent);
}
.sq-count-pop { animation: sqPop 0.5s ease-out; }
@keyframes sqPop {
  0%   { transform: scale(1.8); opacity: 0; }
  50%  { transform: scale(0.95); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}

/* Question wrap */
.sq-question-wrap { animation: sqFadeIn 0.2s ease-out; position: relative; }
@keyframes sqFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Timer */
.sq-timer {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.sq-timer-bar {
  flex: 1;
  height: 8px;
  background: var(--glass-border);
  border-radius: 4px;
  overflow: hidden;
}
.sq-timer-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 4px;
}
.sq-timer-fill.sq-warning { background: var(--warning); }
.sq-timer-fill.sq-danger {
  background: var(--error);
  animation: sqPulse 0.5s infinite;
}
@keyframes sqPulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.5; }
}
.sq-timer-text {
  font-size: 1.1rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  min-width: 36px;
  text-align: right;
}

/* Progress */
.sq-progress {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.sq-progress-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}
.sq-combo {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  animation: sqPop 0.3s ease-out;
}

/* Question text */
.sq-question {
  font-size: 1.3rem;
  font-weight: 600;
  text-align: center;
  margin-bottom: 20px;
  padding: 16px;
  background: var(--bg-secondary);
  border-radius: 12px;
  border-left: 4px solid var(--accent);
  white-space: pre-line;
}
.sq-diagram {
  margin: 0 auto 16px;
  padding: 12px;
  max-width: 280px;
  background: var(--bg-secondary);
  border-radius: 12px;
}
.sq-diagram svg {
  display: block;
  width: 100%;
  height: auto;
}
.sq-hint {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: -12px 0 16px;
}

/* Single-answer choices */
.sq-choices {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.sq-choice-btn {
  padding: 12px 20px;
  font-size: 1.05rem;
  font-weight: 600;
  background: var(--bg-secondary);
  border: 2px solid var(--glass-border);
  border-radius: 10px;
  color: var(--text-primary);
  cursor: pointer;
  transition: border-color 0.15s, transform 0.1s;
  min-width: 60px;
}
.sq-choice-btn:hover {
  border-color: var(--accent);
  transform: scale(1.05);
}
.sq-choice-btn.sq-correct {
  border-color: var(--success);
  background: rgba(76, 175, 80, 0.2);
  color: var(--success);
}
.sq-choice-btn.sq-wrong {
  border-color: var(--error);
  background: rgba(244, 67, 54, 0.2);
  color: var(--error);
}

/* Sequence - Answer slots */
.sq-slots {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 16px;
}
.sq-slot {
  width: 64px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border: 2px dashed var(--glass-border);
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all 0.2s;
}
.sq-slot-filled {
  border-style: solid;
  border-color: var(--success);
  background: rgba(76, 175, 80, 0.15);
  color: var(--success);
}
.sq-slot-miss {
  border-style: solid;
  border-color: var(--error);
  background: rgba(244, 67, 54, 0.15);
  color: var(--error);
}
.sq-slot-complete {
  border-color: var(--success) !important;
  background: rgba(76, 175, 80, 0.25) !important;
  color: var(--success) !important;
}
.sq-slots-grid {
  display: grid !important;
  grid-template-columns: repeat(4, 64px);
  justify-content: center;
}
.sq-seq-actions {
  display: flex;
  justify-content: center;
  margin-bottom: 12px;
}
.sq-next-wrap {
  display: flex;
  justify-content: center;
  margin-top: 16px;
}

/* Chord area */
.sq-chord-area { margin-top: 4px; }
.sq-row-gap { margin-top: 10px; }
.sq-chord-row {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  margin-bottom: 6px;
}
.sq-chord-btn {
  padding: 10px 4px;
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--bg-secondary);
  border: 2px solid var(--glass-border);
  border-radius: 8px;
  color: var(--text-primary);
  cursor: pointer;
  transition: border-color 0.1s, background 0.1s;
}
.sq-chord-btn:hover { border-color: var(--accent); }
.sq-chord-btn.sq-minor {
  font-size: 0.8rem;
  color: var(--text-secondary);
}
.sq-chord-btn.sq-btn-flash {
  border-color: var(--success);
  background: rgba(76, 175, 80, 0.25);
}
.sq-chord-btn.sq-btn-wrong {
  border-color: var(--error);
  background: rgba(244, 67, 54, 0.25);
}

/* Pause */
.sq-pause-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: none;
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s;
}
.sq-pause-btn:hover { color: var(--accent); border-color: var(--accent); }
.sq-pause-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: var(--bg-primary);
  z-index: 10;
  border-radius: 12px;
  color: var(--text-secondary);
}

/* Result */
.sq-result { text-align: center; }
.sq-result-grade {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 8px;
}
.sq-result-score {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
}
.sq-result-pct {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}
.sq-result-time {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.sq-result-detail {
  text-align: left;
  margin: 0 0 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

@media (max-width: 480px) {
  .sq-cat-card { padding: 16px 10px; }
  .sq-question { font-size: 1.1rem; }
  .sq-chord-row { gap: 4px; }
  .sq-chord-btn { padding: 8px 2px; font-size: 0.8rem; }
  .sq-chord-btn.sq-minor { font-size: 0.75rem; }
  .sq-slot { width: 52px; height: 36px; font-size: 0.8rem; }
  .sq-slots-grid { grid-template-columns: repeat(4, 52px); }
  .sq-choice-btn { padding: 10px 14px; font-size: 0.95rem; min-width: 48px; }
}