@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=DM+Serif+Display&family=JetBrains+Mono:wght@500;600&display=swap');

/* ── Design tokens ─────────────────────────────────────────── */
:root, [data-theme="light"] {
  --bg:            #f8f8f8;
  --bg-surface:    #ffffff;
  --bg-card:       #ffffff;
  --bg-hover:      #f0f0f0;
  --border:        #e5e5e5;
  --border-strong: #d4d4d4;
  --text:          #111111;
  --text-secondary:#666666;
  --text-tertiary: #999999;
  --accent:        #d97706;
  --accent-hover:  #b45309;
  --accent-dim:    rgba(217,119,6,0.08);
  --chord:         #b45309;
  --chord-dim:     rgba(180,83,9,0.08);
  --label:         #059669;
  --label-dim:     rgba(5,150,105,0.08);
  --label-chorus:        #2563eb;
  --label-chorus-border: #2563eb44;
  --label-chorus-dim:    #2563eb10;
  --label-bridge:        #9333ea;
  --label-bridge-border: #9333ea44;
  --label-bridge-dim:    #9333ea10;
  --label-refrain:       #0891b2;
  --label-refrain-border:#0891b244;
  --label-refrain-dim:   #0891b210;
  --note-bg:       rgba(217,119,6,0.06);
  --note-border:   #d97706;
  --note-text:     #92400e;
  --radius:        8px;
  --radius-lg:     14px;
  --shadow:        0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-lg:     0 4px 12px rgba(0,0,0,0.08);
}

[data-theme="dark"] {
  --bg:            #111111;
  --bg-surface:    #1a1a1a;
  --bg-card:       #1e1e1e;
  --bg-hover:      #252525;
  --border:        #2a2a2a;
  --border-strong: #3a3a3a;
  --text:          #f5f5f5;
  --text-secondary:#999999;
  --text-tertiary: #666666;
  --accent:        #f59e0b;
  --accent-hover:  #fbbf24;
  --accent-dim:    rgba(245,158,11,0.12);
  --chord:         #f59e0b;
  --chord-dim:     rgba(245,158,11,0.15);
  --label:         #34d399;
  --label-dim:     rgba(52,211,153,0.12);
  --label-chorus:        #60a5fa;
  --label-chorus-border: #60a5fa44;
  --label-chorus-dim:    #60a5fa10;
  --label-bridge:        #c084fc;
  --label-bridge-border: #c084fc44;
  --label-bridge-dim:    #c084fc10;
  --label-refrain:       #22d3ee;
  --label-refrain-border:#22d3ee44;
  --label-refrain-dim:   #22d3ee10;
  --note-bg:       rgba(245,158,11,0.08);
  --note-border:   #f59e0b;
  --note-text:     #fde68a;
  --shadow:        0 1px 3px rgba(0,0,0,0.3);
  --shadow-lg:     0 4px 12px rgba(0,0,0,0.4);
}

/* ── Reset & base ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'DM Sans', -apple-system, sans-serif;
  background: var(--bg); color: var(--text);
  line-height: 1.5; min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* ── Layout ────────────────────────────────────────────────── */
.container { max-width: 800px; margin: 0 auto; padding: 0 1.5rem 4rem; }

/* ── Header ────────────────────────────────────────────────── */
.app-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem 0; gap: 0.75rem; flex-wrap: wrap;
}
.logo { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; color: var(--text); }
.logo-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: var(--accent); display: flex; align-items: center; justify-content: center;
  font-size: 1rem; color: #000; flex-shrink: 0;
}
.logo h1, .app-header h1 {
  font-family: 'DM Serif Display', serif; font-size: 1.25rem; font-weight: 400;
  letter-spacing: -0.01em;
}
.header-actions { display: flex; gap: 0.375rem; }

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 0.35rem;
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg-surface); color: var(--text-secondary);
  font: 500 0.8125rem/1.2 'DM Sans', sans-serif;
  cursor: pointer; transition: all 0.15s; text-decoration: none;
}
.btn:hover { background: var(--bg-hover); color: var(--text); border-color: var(--border-strong); }
.btn-accent { background: var(--accent); color: #000; border-color: var(--accent); font-weight: 600; }
.btn-accent:hover { background: var(--accent-hover); color: #000; border-color: var(--accent-hover); }
.btn-sm { padding: 0.3rem 0.65rem; font-size: 0.75rem; }
.controls-bar .btn-sm { width: 2rem; height: 2rem; padding: 0; display: inline-flex; align-items: center; justify-content: center; }
.btn-group { display: inline-flex; gap: 0.25rem; }

/* ── Filter pills ──────────────────────────────────────────── */
.pill {
  padding: 0.35rem 0.85rem; border-radius: 100px;
  border: 1px solid var(--border); background: transparent;
  color: var(--text-secondary); font: 500 0.8125rem/1.3 'DM Sans', sans-serif;
  cursor: pointer; transition: all 0.15s;
}
.pill:hover { border-color: var(--text-secondary); color: var(--text); }
.pill.active { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }

/* ── Tags / badges ─────────────────────────────────────────── */
.tag {
  display: inline-flex; align-items: center;
  padding: 0.2rem 0.55rem; border-radius: var(--radius);
  font: 600 0.6875rem/1.3 'JetBrains Mono', monospace;
}
.tag-key { background: var(--chord-dim); color: var(--chord); }
.tag-lang { background: var(--bg-hover); color: var(--text-secondary); }
/* compat aliases */
.badge { display: inline-flex; align-items: center; padding: 0.2rem 0.55rem; border-radius: var(--radius); font: 600 0.6875rem/1.3 'JetBrains Mono', monospace; background: var(--bg-hover); color: var(--text-secondary); }

/* ── Arrangement drag-and-drop pills ───────────────────────── */
.arr-pill {
  display: inline-flex; align-items: center;
  padding: 0.2rem 0.6rem; border-radius: var(--radius);
  font: 600 0.6875rem/1.3 'DM Sans', sans-serif; text-transform: uppercase; letter-spacing: 0.06em;
  border: 1px solid var(--border); background: var(--bg-surface); color: var(--label);
  cursor: grab; user-select: none; transition: opacity 0.15s, outline 0.1s;
}
.arr-pill.dragging { opacity: 0.4; cursor: grabbing; }
.arr-pill.drag-over { outline: 2px solid var(--accent); outline-offset: 1px; }
.arr-pill.section-label-chorus { color: var(--label-chorus); border-color: var(--label-chorus-border); background: var(--label-chorus-dim); }
.arr-pill.section-label-bridge { color: var(--label-bridge); border-color: var(--label-bridge-border); background: var(--label-bridge-dim); }
.arr-pill.section-label-refrain { color: var(--label-refrain); border-color: var(--label-refrain-border); background: var(--label-refrain-dim); }

/* ── Hero search (catalog) ─────────────────────────────────── */
.hero { text-align: center; padding: 2rem 0 1.5rem; }
.hero-title {
  font-family: 'DM Serif Display', serif; font-size: 2.25rem; font-weight: 400;
  margin-bottom: 0.25rem; letter-spacing: -0.02em;
}
.hero-sub { color: var(--text-tertiary); font-size: 0.9rem; margin-bottom: 1.25rem; }

/* ── Search ────────────────────────────────────────────────── */
.search-input {
  width: 100%; padding: 0.7rem 1rem;
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  background: var(--bg-surface); color: var(--text);
  font: 400 0.9375rem/1.5 'DM Sans', sans-serif;
  transition: all 0.2s; box-shadow: var(--shadow);
}
.search-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-dim); }
.search-input::placeholder { color: var(--text-tertiary); }
.search-input::-webkit-search-cancel-button { -webkit-appearance: none; }
.search-clear {
  position: absolute; right: 0.5rem; top: 50%; transform: translateY(-50%);
  background: none; border: none; color: var(--text-tertiary); font-size: 1.25rem;
  cursor: pointer; padding: 0.2rem 0.4rem; line-height: 1; border-radius: 50%;
}
.search-clear:hover { color: var(--text); }
.search-bar {
  display: flex; gap: 0.5rem; flex-wrap: wrap; justify-content: center;
  margin-top: 0.5rem;
}
select.filter {
  padding: 0.45rem 0.75rem; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg-surface); color: var(--text-secondary);
  font: 500 0.8125rem/1.5 'DM Sans', sans-serif; cursor: pointer;
}

/* ── Song list (catalog) ───────────────────────────────────── */
.song-count {
  font-size: 0.8125rem; color: var(--text-tertiary);
  margin: 0.75rem 0 0.25rem; padding-left: 0.25rem;
}
.empty-state { text-align: center; padding: 2.5rem 0; color: var(--text-tertiary); }
.empty-state p { margin: 0 0 0.75rem; font-size: 0.9375rem; }
.letter-group { margin-top: 0; }
.letter-heading {
  font: 600 0.6875rem/1 'DM Sans', sans-serif; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--text-tertiary);
  padding: 0.75rem 0.25rem 0.35rem;
}
.song-list { display: flex; flex-direction: column; gap: 0.375rem; }
.song-item {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 0.75rem 1rem;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none; color: var(--text);
  transition: all 0.15s;
}
.song-item:hover { border-color: var(--border-strong); background: var(--bg-hover); transform: translateY(-1px); }
.song-title { font-size: 0.9375rem; font-weight: 600; }
.song-first-line {
  font-size: 0.8125rem; color: var(--text-secondary); margin-top: 0.0625rem;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 420px;
}
.song-meta { display: flex; gap: 0.375rem; flex-shrink: 0; }

/* ── Song page ─────────────────────────────────────────────── */
.song-title-inline {
  font-family: 'DM Sans', sans-serif; font-weight: 600;
  font-size: calc(1.0625rem * var(--song-scale, 1)); line-height: 1.5;
  color: var(--text-secondary); margin: 0.25rem 0 0.75rem; padding-left: 0.75rem;
}
.song-header-block {
  padding: 0.75rem 0 0.5rem;
}
.song-header-block h1 {
  font-family: 'DM Serif Display', serif; font-size: 1.5rem; font-weight: 400;
  letter-spacing: -0.02em; margin-bottom: 0.35rem;
}
.song-meta-row { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.controls-bar {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.5rem 0; margin-bottom: 0.5rem; flex-wrap: wrap;
}
.key-display {
  font: 700 1.25rem/1 'JetBrains Mono', monospace; color: var(--accent);
  min-width: 2.5rem; text-align: center;
  background: var(--accent-dim); padding: 0.35rem 0.5rem;
  border-radius: var(--radius); border: none; cursor: pointer;
  appearance: none; -webkit-appearance: none;
}
.actions-bar { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1.5rem; }

/* ── Section & lyrics ──────────────────────────────────────── */
.section-break { height: 0.75em; }
.section-label {
  font: 600 0.6875rem/1 'DM Sans', sans-serif; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--label);
  background: var(--label-dim); display: inline-block;
  padding: 0.25rem 0.65rem; border-radius: var(--radius);
  margin-top: 1.25rem; margin-bottom: 0.4rem;
}
.song-section:first-child .section-label,
.song-section:first-child .section-label-dim {
  margin-top: 0;
}
.section-label-dim {
  font: 500 0.6rem/1 'DM Sans', sans-serif; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--label); opacity: 0.7;
  background: none; display: block;
  padding: 0; margin-top: 0.75rem; margin-bottom: 0.15rem;
}
.section-label-verse { color: var(--label); font-weight: 700; }
.section-label-chorus { color: var(--label-chorus); font-weight: 700; }
.section-label-bridge { color: var(--label-bridge); font-weight: 700; }
.section-label-refrain { color: var(--label-refrain); font-weight: 700; }
.section-label-insert { color: var(--accent); font-weight: 700; }
.section-label-other { color: var(--text-secondary); font-weight: 700; }
.section-label-dim.section-label-verse { color: var(--label); }
.section-label-dim.section-label-chorus { color: var(--label-chorus); }
.section-label-dim.section-label-bridge { color: var(--label-bridge); }
.section-label-dim.section-label-refrain { color: var(--label-refrain); }
.section-label-dim.section-label-insert { color: var(--accent); }
.section-label-dim.section-label-other { color: var(--text-secondary); }
/* Colorblind-safe: non-color prefix for singer-mode section labels */
.section-label-dim.section-label-chorus::before,
.section-label-dim .section-label-chorus::before { content: '♪ '; }
.section-label-dim.section-label-bridge::before,
.section-label-dim .section-label-bridge::before { content: '◆ '; }
.section-label-dim.section-label-refrain::before,
.section-label-dim .section-label-refrain::before { content: '↩ '; }
.chord-line { display: flex; flex-wrap: wrap; align-items: flex-end; line-height: 1.4; margin-bottom: 0.125rem; }
.chord-segment { display: inline-flex; flex-direction: column; align-items: flex-start; }
.chord {
  font-family: 'JetBrains Mono', monospace; font-weight: 600;
  font-size: calc(0.825rem * var(--song-scale, 1)); line-height: 1.4;
  color: var(--chord); white-space: pre; min-width: 0.5em; padding-right: 0.5em;
}
.chord-invalid { color: #dc2626; opacity: 0.6; text-decoration: underline wavy; }
.lyric { font-size: calc(1.0625rem * var(--song-scale, 1)); line-height: 1.6; white-space: pre-wrap; word-wrap: break-word; }
.notation { font-style: italic; opacity: 0.5; font-size: 0.9em; }
.chords-only { font-family: 'JetBrains Mono', monospace; font-weight: 600; font-size: calc(0.9rem * var(--song-scale, 1)); line-height: 1.4; color: var(--chord); margin-bottom: 0.5rem; }
.song-section { border-radius: var(--radius); padding: 0.5rem 0.75rem; }

/* ── Cue notes ─────────────────────────────────────────────── */
.cue-note {
  display: inline-flex; gap: 0.4rem; align-items: center;
  padding: 0.4rem 0.85rem; margin: 0.75rem 0;
  background: var(--note-bg); border: 1px solid rgba(217,119,6,0.18);
  border-radius: 100px; font-size: 1.1rem; color: var(--note-text);
}

/* ── Rehearsal: metronome ──────────────────────────────────── */
.metronome-panel {
  display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap;
  padding: 0.75rem 1rem; background: var(--bg-card);
  border-radius: var(--radius-lg); margin-bottom: 1rem;
  border: 1px solid var(--border);
}
.beat-dots { display: flex; gap: 0.4rem; align-items: center; }
.beat-dot {
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--border-strong); transition: background 0.05s;
}
.beat-dot.active { background: var(--accent); }
.bpm-display {
  font: 600 1rem/1 'JetBrains Mono', monospace;
  min-width: 3rem; text-align: center; color: var(--text);
}
.song-section.active {
  background: var(--accent-dim); outline: 2px solid var(--accent);
  cursor: pointer;
}
.song-section { cursor: pointer; }

/* ── Editor ────────────────────────────────────────────────── */
.editor-layout { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
@media (min-width: 900px) {
  .editor-layout { grid-template-columns: 1fr 1fr; }
}
.editor-form section { margin-bottom: 1.5rem; }
.form-group { margin-bottom: 0.75rem; }
.form-group label { display: block; font-size: 0.75rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 0.25rem; text-transform: uppercase; letter-spacing: 0.05em; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 0.45rem 0.65rem;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg-surface); color: var(--text);
  font: 400 0.875rem/1.5 'DM Sans', sans-serif;
  transition: border-color 0.15s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim);
}
.form-group textarea {
  resize: vertical; min-height: 80px;
  font-family: 'JetBrains Mono', monospace; font-size: 0.85rem;
}
.editor-preview { position: sticky; top: 1rem; max-height: 90vh; overflow-y: auto; }
.legend-box {
  background: var(--bg-card); border: 1px solid var(--border);
  padding: 0.75rem 1rem; margin-bottom: 1.5rem;
  border-radius: var(--radius-lg); font-size: 0.85rem; color: var(--text-secondary);
  display: flex; flex-direction: column; gap: 0.4rem;
}
.legend-tag {
  font-family: 'JetBrains Mono', monospace; font-size: 0.75rem;
  padding: 0.2rem 0.45rem;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg-surface); color: var(--text);
  cursor: pointer; line-height: 1.6; transition: all 0.15s;
}
.legend-tag:hover { background: var(--bg-hover); border-color: var(--border-strong); }
.icon-picker { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.icon-toggle {
  font-size: 1.2rem; padding: 0.2rem 0.4rem;
  border: 1px solid var(--border); border-radius: var(--radius);
  cursor: pointer; background: var(--bg); opacity: 0.5; transition: all 0.15s;
}
.icon-toggle.selected { opacity: 1; background: var(--note-bg); border-color: var(--note-border); }
.editor-meta {
  display: grid; grid-template-columns: 2fr auto auto 1fr;
  gap: 0.75rem; margin-bottom: 1rem; align-items: end;
}
.editor-meta .form-group { margin: 0; }
.song-picker { position: relative; display: flex; gap: 0.5rem; margin-bottom: 1rem; align-items: center; }
.song-picker-input {
  flex: 1; padding: 0.45rem 0.65rem;
  font: 400 0.875rem/1.5 'DM Sans', sans-serif;
  border-radius: var(--radius); box-shadow: none;
}
.song-picker-list {
  position: absolute; top: 100%; left: 0; right: 0; z-index: 30;
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius); max-height: 300px; overflow-y: auto;
  box-shadow: var(--shadow-lg); display: none;
}
.song-picker-item {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.5rem 0.75rem; cursor: pointer; font-size: 0.85rem;
  border-bottom: 1px solid var(--border);
}
.song-picker-item:hover { background: var(--bg-hover); }

/* ── Song body ─────────────────────────────────────────────── */

/* ── Print ─────────────────────────────────────────────────── */
@media print {
  .app-header, .controls-bar, .actions-bar, .metronome-panel,
  .btn, .search-bar, .hero, #themeToggle { display: none !important; }
  body { background: white; color: black; font: 11pt/1.4 Georgia, serif; }
  .container { padding: 0; max-width: none; }
  .song-section { page-break-inside: avoid; }
  .chord { color: #444; }
  .section-label { color: #444; background: #eee; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .section-label-chorus, .section-label-dim.section-label-chorus { color: #1d4ed8; }
  .section-label-bridge, .section-label-dim.section-label-bridge { color: #7e22ce; }
  .section-label-refrain, .section-label-dim.section-label-refrain { color: #0369a1; }
  .lyric { font-size: 11pt; }
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 640px) {
  .container { padding: 0 1rem 3rem; }
  .hero-title { font-size: 1.75rem; }
  .editor-meta { grid-template-columns: 1fr; }
  .controls-bar { gap: 0.35rem; }
  .song-header-block h1 { font-size: 1.5rem; }
  .song-first-line { max-width: 200px; }
  .search-bar { flex-direction: column; }
  .search-bar .search-input { max-width: none; }
  #songBody { font-size: 16px !important; }
}