/* ===== RESET & BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a2e;
  --bg-card-hover: #222240;
  --text-primary: #e8e8f0;
  --text-secondary: #9898b0;
  --text-muted: #6868808;
  --accent-green: #00d97e;
  --accent-blue: #4d7cfe;
  --accent-purple: #a855f7;
  --accent-orange: #f59e0b;
  --accent-red: #ef4444;
  --accent-cyan: #22d3ee;
  --border-color: #2a2a3e;
  --border-subtle: #1e1e30;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 4px 12px rgba(0,0,0,0.4);
  --font-mono: 'Courier New', Courier, monospace;
  --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

/* ===== HEADER ===== */
.site-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 1.5rem 2rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  padding-bottom: 1rem;
}

.band-name {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: 4px;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tagline {
  color: var(--text-secondary);
  font-size: 0.9rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-top: 0.25rem;
}

.main-nav {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  gap: 0;
}

.nav-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all 0.2s;
}

.nav-btn:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.03);
}

.nav-btn.active {
  color: var(--accent-blue);
  border-bottom-color: var(--accent-blue);
}

/* ===== MAIN ===== */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

/* ===== VIEWS ===== */
.view {
  display: none;
}

.view.active {
  display: block;
}

/* ===== SECTION GROUPS ===== */
.section-group {
  margin-bottom: 3rem;
}

.section-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.ready-title { color: var(--accent-green); }
.practicing-title { color: var(--accent-orange); }
.originals-title { color: var(--accent-purple); }

.section-desc {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

/* ===== SONG GRID ===== */
.song-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

/* ===== SONG CARD ===== */
.song-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
}

.song-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.song-card .card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.song-card .card-artist {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.song-card .card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.meta-tag {
  background: rgba(255,255,255,0.06);
  border-radius: 4px;
  padding: 0.2rem 0.5rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.meta-tag.key { color: var(--accent-cyan); }
.meta-tag.bpm { color: var(--accent-orange); }
.meta-tag.tuning { color: var(--accent-purple); }

.status-badge {
  display: inline-block;
  padding: 0.2rem 0.75rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.status-badge.ready {
  background: rgba(0, 217, 126, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(0, 217, 126, 0.3);
}

.status-badge.practicing {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-orange);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

/* ===== SONG DETAIL ===== */
.back-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
  transition: all 0.2s;
}

.back-btn:hover {
  border-color: var(--accent-blue);
  color: var(--text-primary);
}

.song-header {
  margin-bottom: 1.5rem;
}

.song-detail-title {
  font-size: 2rem;
  font-weight: 700;
}

.song-detail-artist {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

/* ===== META GRID ===== */
.song-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.meta-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1rem;
  text-align: center;
}

.meta-label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.meta-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-cyan);
}

/* ===== TABS ===== */
.detail-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 0.75rem 1.25rem;
  cursor: pointer;
  font-size: 0.9rem;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

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

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

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* ===== STRUCTURE TABLE ===== */
.structure-table {
  width: 100%;
  border-collapse: collapse;
}

.structure-table th,
.structure-table td {
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.structure-table th {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  background: var(--bg-card);
}

.structure-table td {
  font-size: 0.9rem;
}

.structure-table .section-name {
  font-weight: 600;
  color: var(--accent-blue);
  white-space: nowrap;
}

.structure-table .section-chords {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  font-size: 0.85rem;
}

.structure-table .section-notes {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.structure-table tr:hover {
  background: rgba(255,255,255,0.02);
}

/* ===== CHORDS SECTION ===== */
.chords-description {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.chord-voicings {
  margin-bottom: 2rem;
}

.chord-voicings h4,
.chord-progressions h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.voicing-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.voicing-chip {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.voicing-chip .chord-name {
  font-weight: 700;
  color: var(--accent-blue);
  min-width: 50px;
}

.voicing-chip .chord-frets {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  font-size: 0.85rem;
}

.progression-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  margin-bottom: 0.5rem;
}

.progression-item .prog-name {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.progression-item .prog-chords {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  font-size: 0.95rem;
}

/* ===== LYRICS SECTION ===== */
.lyrics-notice {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.lyrics-notice p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.lyrics-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.lyrics-link {
  display: inline-block;
  background: rgba(77, 124, 254, 0.1);
  color: var(--accent-blue);
  text-decoration: none;
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-size: 0.85rem;
  border: 1px solid rgba(77, 124, 254, 0.3);
  transition: all 0.2s;
}

.lyrics-link:hover {
  background: rgba(77, 124, 254, 0.2);
  border-color: var(--accent-blue);
}

.lyrics-summary {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-top: 1rem;
  padding: 1rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border-left: 3px solid var(--accent-purple);
}

/* ===== CHORD SHEET (Lyrics + Chords) ===== */
.chord-sheet {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.4;
}

.chord-sheet-section {
  margin-bottom: 2rem;
}

.chord-sheet-section-label {
  font-family: var(--font-main);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent-blue);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 0.4rem 0.75rem;
  display: inline-block;
  margin-bottom: 0.75rem;
}

.chord-sheet-line {
  margin-bottom: 0.25rem;
}

.chord-line {
  color: var(--accent-cyan);
  font-weight: 700;
  font-size: 0.85rem;
  white-space: pre;
  line-height: 1.3;
  min-height: 1.2em;
  user-select: all;
}

.lyric-line {
  color: var(--text-primary);
  white-space: pre-wrap;
  line-height: 1.5;
  margin-bottom: 0.4rem;
}

.lyric-line.instrumental {
  color: var(--text-secondary);
  font-style: italic;
}

.no-content {
  color: var(--text-secondary);
  font-style: italic;
  padding: 2rem;
  text-align: center;
}

/* ===== GUITAR TABS ===== */
.tabs-section {
  margin-bottom: 2rem;
}

.tabs-heading,
.notes-heading {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.tab-block {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
  overflow: hidden;
}

.tab-block-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  background: rgba(255,255,255,0.02);
}

.tab-block-name {
  font-weight: 700;
  color: var(--accent-blue);
  font-size: 0.9rem;
}

.tab-block-tuning {
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.06);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

.tab-notation {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.4;
  color: var(--accent-cyan);
  padding: 1rem;
  margin: 0;
  overflow-x: auto;
  white-space: pre;
  -webkit-overflow-scrolling: touch;
}

.practice-notes-section {
  margin-top: 1.5rem;
}

/* ===== NOTES LIST ===== */
.notes-list {
  list-style: none;
}

.notes-list li {
  padding: 0.6rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--text-secondary);
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border-subtle);
}

.notes-list li:last-child {
  border-bottom: none;
}

.notes-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-blue);
}

/* ===== ORIGINALS SECTION ===== */
.original-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.original-card .original-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-purple);
}

.original-card .original-subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
  font-style: italic;
  margin-bottom: 1rem;
}

.original-card .original-notes {
  list-style: none;
}

.original-card .original-notes li {
  padding: 0.4rem 0;
  padding-left: 1.25rem;
  position: relative;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.original-card .original-notes li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-purple);
}

.original-structure {
  margin-top: 1rem;
}

.original-structure h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.audio-placeholder {
  margin-top: 1rem;
  padding: 1rem;
  border: 2px dashed var(--border-color);
  border-radius: var(--radius);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ===== FOOTER ===== */
.site-footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-secondary);
  font-size: 0.8rem;
  border-top: 1px solid var(--border-color);
  margin-top: 3rem;
}

/* ===== DIFFICULTY BADGE ===== */
.difficulty-badge {
  font-size: 0.7rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.difficulty-badge.beginner {
  background: rgba(0, 217, 126, 0.15);
  color: var(--accent-green);
}

.difficulty-badge.intermediate {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-orange);
}

.difficulty-badge.advanced {
  background: rgba(239, 68, 68, 0.15);
  color: var(--accent-red);
}

/* ===== PIANO TAB ===== */
.piano-overview {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.piano-section-heading {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.piano-scale-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 2rem;
}

.piano-scale-row {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.piano-scale-notes {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-cyan);
}

.piano-scale-solfege {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent-purple);
}

/* Piano chord table */
.piano-chords-section {
  margin-bottom: 2rem;
}

.piano-chord-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.piano-chord-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 420px;
}

.piano-chord-table th,
.piano-chord-table td {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.piano-chord-table th {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  background: var(--bg-card);
}

.piano-chord-name {
  font-weight: 700;
  color: var(--accent-blue);
  white-space: nowrap;
}

.piano-chord-roman {
  font-family: var(--font-mono);
  color: var(--text-primary);
  font-size: 0.9rem;
}

.piano-chord-notes {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  font-weight: 600;
  white-space: nowrap;
}

.piano-chord-solfege {
  font-family: var(--font-mono);
  color: var(--accent-purple);
  font-size: 0.85rem;
  white-space: nowrap;
}

.piano-chord-shape {
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-style: italic;
}

.piano-chord-note-row td {
  padding: 0.15rem 0.75rem 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.piano-chord-note {
  font-size: 0.75rem;
  color: var(--accent-orange);
  font-style: italic;
}

.piano-chord-table tr:hover {
  background: rgba(255,255,255,0.02);
}

.piano-chord-note-row:hover {
  background: none;
}

/* Piano progressions */
.piano-progressions-section {
  margin-bottom: 2rem;
}

.piano-progression-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 0.75rem;
}

.piano-prog-name {
  font-weight: 700;
  color: var(--accent-blue);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.5rem;
}

.piano-prog-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
  align-items: baseline;
}

.piano-prog-label {
  color: var(--text-secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  min-width: 60px;
  flex-shrink: 0;
}

.piano-prog-value {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
}

.piano-prog-roman {
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.piano-prog-solfege {
  font-family: var(--font-mono);
  color: var(--accent-purple);
  font-weight: 600;
}

/* Piano tips */
.piano-tips-section {
  margin-top: 1.5rem;
}

/* ===== MOBILE NAV TOGGLE ===== */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 1.5rem;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius);
  cursor: pointer;
  line-height: 1;
}

.nav-toggle:hover {
  color: var(--text-primary);
  border-color: var(--accent-blue);
}

/* ===== RESPONSIVE ===== */

/* --- Tablet (768px) --- */
@media (max-width: 768px) {
  .site-header {
    padding: 1rem 1rem 0;
  }

  .band-name {
    font-size: 1.8rem;
    letter-spacing: 2px;
  }

  main {
    padding: 1.25rem;
  }

  .song-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  }

  .song-meta-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Scrollable tabs with fade hint */
  .detail-tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .detail-tabs::-webkit-scrollbar {
    display: none;
  }

  .structure-table {
    font-size: 0.85rem;
  }

  .structure-table th,
  .structure-table td {
    padding: 0.5rem;
  }

  .nav-btn {
    padding: 0.75rem 1rem;
    font-size: 0.85rem;
  }

  .song-detail-title {
    font-size: 1.5rem;
  }

  .chord-sheet {
    font-size: 0.8rem;
  }

  .tab-notation {
    font-size: 0.7rem;
  }
}

/* --- Mobile (600px) --- */
@media (max-width: 600px) {
  .site-header {
    padding: 0.75rem 0.75rem 0;
  }

  .header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-align: left;
    padding-bottom: 0.75rem;
  }

  .nav-toggle {
    display: block;
  }

  .band-name {
    font-size: 1.4rem;
    letter-spacing: 1px;
  }

  .tagline {
    font-size: 0.7rem;
    letter-spacing: 1px;
  }

  .main-nav {
    display: none;
    flex-direction: column;
    border-top: 1px solid var(--border-color);
  }

  .main-nav.open {
    display: flex;
  }

  .nav-btn {
    padding: 0.85rem 1rem;
    font-size: 0.95rem;
    text-align: left;
    border-bottom: none;
    border-left: 3px solid transparent;
    min-height: 44px;
  }

  .nav-btn.active {
    border-bottom: none;
    border-left-color: var(--accent-blue);
    background: rgba(77, 124, 254, 0.05);
  }

  main {
    padding: 1rem 0.75rem;
  }

  .section-group {
    margin-bottom: 2rem;
  }

  .song-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  /* Touch-friendly song cards */
  .song-card {
    padding: 1rem;
    min-height: 44px;
  }

  .song-card:hover {
    transform: none; /* Disable hover lift on touch devices */
  }

  .song-card:active {
    background: var(--bg-card-hover);
    border-color: var(--accent-blue);
  }

  /* Song detail view */
  .song-detail-title {
    font-size: 1.3rem;
  }

  .song-detail-artist {
    font-size: 0.95rem;
  }

  .song-meta-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }

  .meta-card {
    padding: 0.75rem 0.5rem;
  }

  .meta-label {
    font-size: 0.65rem;
  }

  .meta-value {
    font-size: 0.9rem;
  }

  /* Tabs: horizontal scroll with touch */
  .detail-tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 0;
  }

  .detail-tabs::-webkit-scrollbar {
    display: none;
  }

  .tab-btn {
    padding: 0.75rem 1rem;
    font-size: 0.85rem;
    white-space: nowrap;
    min-height: 44px;
    flex-shrink: 0;
  }

  /* Structure table: horizontal scroll wrapper */
  .tab-panel {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .structure-table {
    font-size: 0.8rem;
    min-width: 500px;
  }

  .structure-table th,
  .structure-table td {
    padding: 0.5rem 0.4rem;
  }

  .structure-table .section-chords {
    font-size: 0.75rem;
  }

  /* Chord voicings: stack on mobile */
  .voicing-grid {
    flex-direction: column;
  }

  .voicing-chip {
    padding: 0.5rem 0.75rem;
  }

  .progression-item .prog-chords {
    font-size: 0.85rem;
    word-break: break-word;
  }

  /* Chord sheet: smaller font, scroll for long chord lines */
  .chord-sheet {
    font-size: 0.78rem;
  }

  .chord-line {
    font-size: 0.72rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .lyric-line {
    font-size: 0.85rem;
  }

  /* Tab notation: scroll container */
  .tab-notation {
    font-size: 0.65rem;
    padding: 0.75rem;
  }

  .tab-block-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    padding: 0.5rem 0.75rem;
  }

  /* Piano tab: mobile */
  .piano-scale-notes {
    font-size: 0.85rem;
  }

  .piano-scale-solfege {
    font-size: 0.8rem;
  }

  .piano-chord-table {
    font-size: 0.8rem;
    min-width: 380px;
  }

  .piano-chord-table th,
  .piano-chord-table td {
    padding: 0.5rem 0.4rem;
  }

  .piano-progression-card {
    padding: 0.75rem;
  }

  .piano-prog-row {
    font-size: 0.82rem;
    flex-wrap: wrap;
  }

  /* Back button: full touch target */
  .back-btn {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
  }

  /* Lyrics links: wrap nicely */
  .lyrics-links {
    gap: 0.4rem;
  }

  .lyrics-link {
    padding: 0.5rem 0.85rem;
    font-size: 0.8rem;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

  /* Originals */
  .original-card {
    padding: 1rem;
  }

  .original-card .original-title {
    font-size: 1.2rem;
  }

  /* Footer */
  .site-footer {
    margin-top: 2rem;
    padding: 1.5rem 0.75rem;
  }
}

/* --- Small phones (380px) --- */
@media (max-width: 380px) {
  .band-name {
    font-size: 1.2rem;
  }

  .tagline {
    font-size: 0.65rem;
  }

  main {
    padding: 0.75rem 0.5rem;
  }

  .song-detail-title {
    font-size: 1.15rem;
  }

  .song-meta-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.4rem;
  }

  .meta-card {
    padding: 0.5rem 0.4rem;
  }

  .chord-sheet {
    font-size: 0.72rem;
  }

  .chord-line {
    font-size: 0.68rem;
  }

  .tab-notation {
    font-size: 0.6rem;
  }

  .section-title {
    font-size: 1.15rem;
  }

  .tab-btn {
    padding: 0.65rem 0.75rem;
    font-size: 0.8rem;
  }
}

/* --- Touch device improvements --- */
@media (hover: none) and (pointer: coarse) {
  .song-card:hover {
    transform: none;
    box-shadow: none;
  }

  .song-card:active {
    background: var(--bg-card-hover);
    border-color: var(--accent-blue);
    transform: scale(0.98);
  }

  .nav-btn:hover {
    background: none;
  }

  .nav-btn:active {
    background: rgba(255,255,255,0.06);
  }

  .tab-btn:active {
    background: rgba(255,255,255,0.06);
  }

  .back-btn:active {
    background: rgba(255,255,255,0.06);
  }
}

/* --- Landscape phone --- */
@media (max-height: 500px) and (orientation: landscape) {
  .site-header {
    position: relative; /* Unstick header in landscape to save vertical space */
  }

  .song-meta-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}