:root {
  --surface: #F5F4F0;
  --surface-sheet: #FAFAF8;
  --dark: #1A1A1A;
  --dark-hover: #2A2A2A;
  --dark-input: #111111;
  --fg: #1A1A1A;
  --fg-secondary: #666666;
  --fg-inverse: #F5F4F0;
  --fg-muted: #888888;
  --fg-dim: #555555;
  --accent: #8F5A3C;
  --border: #E0E0E0;
  --border-dark: #333333;
  --bar-bg: #EEEDEA;

  --font-heading: 'Newsreader', serif;
  --font-body: 'Geist', -apple-system, system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

@import url('https://fonts.googleapis.com/css2?family=Newsreader:wght@300;400;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font-body);
  background: var(--surface);
  color: var(--fg);
  height: 100vh;
  overflow: hidden;
}

#app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}
.app-layout {
  display: flex;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: 280px;
  min-width: 280px;
  background: var(--dark);
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  gap: 20px;
  overflow: hidden;
}

.sidebar-header { display: flex; flex-direction: column; gap: 4px; }
.app-name { font-family: var(--font-heading); font-size: 28px; font-weight: 300; color: var(--fg-inverse); letter-spacing: 1px; }
.app-tagline { font-family: var(--font-mono); font-size: 10px; color: var(--fg-secondary); letter-spacing: 2px; }

/* Tab bar */
.tab-bar {
  display: flex;
  background: var(--dark-input);
  border-radius: 6px;
  padding: 3px;
}
.tab {
  flex: 1;
  padding: 6px 0;
  border: none;
  background: transparent;
  color: var(--fg-secondary);
  font-family: var(--font-body);
  font-size: 12px;
  cursor: pointer;
  border-radius: 4px;
}
.tab.active {
  background: var(--dark-hover);
  color: var(--fg-inverse);
  font-weight: 500;
}

/* Filters */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.filter-chip {
  padding: 4px 10px;
  border-radius: 12px;
  border: none;
  background: var(--dark-hover);
  color: var(--fg-muted);
  font-family: var(--font-body);
  font-size: 11px;
  cursor: pointer;
}
.filter-chip.active {
  background: var(--accent);
  color: var(--fg-inverse);
  font-weight: 500;
}

/* Filters row with add button */
.filters-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.filters-row .filters { flex: 1; }
.add-tune-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px dashed #555;
  background: transparent;
  color: var(--fg-muted);
  font-size: 16px;
  cursor: pointer;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.add-tune-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Tunes content wrapper */
.tunes-content { display: flex; flex-direction: column; gap: 12px; flex: 1; min-height: 0; }

/* Sets tab */
.sets-content { display: flex; flex-direction: column; gap: 12px; flex: 1; min-height: 0; }
.add-set-btn {
  width: 100%;
  padding: 10px;
  border: 1px dashed #555;
  border-radius: 4px;
  background: transparent;
  color: var(--fg-muted);
  font-family: var(--font-body);
  font-size: 12px;
  cursor: pointer;
}
.add-set-btn:hover { border-color: var(--accent); color: var(--accent); }
.set-list { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 4px; }
.sets-empty { color: var(--fg-dim); font-size: 12px; text-align: center; padding: 20px 0; }

.set-card { border-radius: 4px; overflow: hidden; }
.set-card.active { background: var(--dark-hover); }
.set-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  cursor: pointer;
}
.set-card-header:hover { background: var(--dark-hover); }
.set-info { display: flex; flex-direction: column; gap: 2px; }
.set-name { font-size: 13px; color: #aaa; }
.set-card.active .set-name { color: var(--fg-inverse); font-weight: 500; }
.set-meta { font-family: var(--font-mono); font-size: 10px; color: var(--fg-dim); }
.set-expand { color: var(--fg-dim); font-size: 12px; }

.set-tunes { padding: 4px 12px 8px 12px; display: flex; flex-direction: column; gap: 2px; }
.set-tune-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0 4px 8px;
  font-size: 12px;
}
.set-tune-num { font-family: var(--font-mono); font-size: 10px; color: var(--fg-dim); width: 16px; }
.set-tune-name { color: #aaa; cursor: pointer; flex: 1; }
.set-tune-name:hover { color: var(--fg-inverse); }
.set-tune-remove {
  border: none; background: transparent; color: var(--fg-dim); cursor: pointer;
  font-size: 14px; opacity: 0;
}
.set-tune-row:hover .set-tune-remove { opacity: 1; }
.set-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0 2px;
}
.set-add-btn {
  border: 1px dashed #555; background: transparent; color: var(--fg-muted);
  font-size: 14px; cursor: pointer; width: 24px; height: 24px;
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
}
.set-add-btn:hover { border-color: var(--accent); color: var(--accent); }
.delete-set {
  border: none; background: transparent; color: #666; font-size: 11px;
  font-family: var(--font-body); cursor: pointer;
}
.delete-set:hover { color: #e55; }
.set-add-inline { display: flex; flex-direction: column; gap: 2px; padding-top: 4px; }

/* Set creation form */
.set-creation {
  background: var(--dark-hover);
  border-radius: 4px;
  border: 1px solid var(--accent);
  padding: 10px 12px;
}
.set-name-input { display: flex; }
.set-input {
  width: 100%;
  background: var(--dark);
  border: 1px solid #444;
  border-radius: 3px;
  padding: 6px 8px;
  color: var(--fg-inverse);
  font-family: var(--font-body);
  font-size: 12px;
  outline: none;
}
.set-input:focus { border-color: var(--accent); }
.set-input::placeholder { color: #555; }
.set-creation-header {
  font-size: 13px; font-weight: 500; color: var(--fg-inverse); margin-bottom: 8px;
}
.set-creation-tunes { display: flex; flex-direction: column; gap: 2px; margin-bottom: 8px; }
.set-creation-tune-row { display: flex; align-items: center; gap: 8px; font-size: 12px; color: #aaa; }
.set-creation-hints {
  font-family: var(--font-mono); font-size: 9px; color: var(--fg-dim);
  text-align: center; margin-top: 8px;
}
.set-tune-picker { display: flex; flex-direction: column; gap: 4px; }

/* Typeahead */
.typeahead-dropdown {
  background: var(--dark);
  border: 1px solid #444;
  border-radius: 3px;
  margin-top: 2px;
  overflow: hidden;
}
.typeahead-item {
  display: flex;
  justify-content: space-between;
  padding: 6px 8px;
  font-size: 12px;
  color: #aaa;
  cursor: pointer;
}
.typeahead-item:hover, .typeahead-item.highlighted {
  background: var(--accent);
  color: var(--fg-inverse);
}
.typeahead-name { flex: 1; }
.typeahead-type { font-family: var(--font-mono); font-size: 10px; opacity: 0.7; text-transform: capitalize; }

/* Section buttons wrapper */
.section-btns { display: flex; gap: 8px; }

/* Learned indicator */
.learned-indicator { color: #2A6B3A; font-size: 11px; flex-shrink: 0; }

/* Learned toggle */
.learned-toggle {
  padding: 5px 12px; border-radius: 4px; border: none;
  background: var(--dark); color: var(--fg-inverse);
  font-family: var(--font-body); font-size: 12px; font-weight: 500; cursor: pointer;
  margin-left: 8px;
}
.learned-toggle.active { background: #2A6B3A; }

/* Session tab */
.session-content { display: flex; flex-direction: column; gap: 12px; flex: 1; min-height: 0; }
.session-summary { font-family: var(--font-mono); font-size: 11px; color: var(--fg-muted); }
.session-actions { display: flex; flex-direction: column; gap: 12px; }
.session-start {
  width: 100%; padding: 12px; border: none; border-radius: 4px;
  background: var(--accent); color: var(--fg-inverse);
  font-family: var(--font-body); font-size: 13px; font-weight: 500; cursor: pointer;
}
.session-start:disabled { opacity: 0.4; cursor: default; }
.session-preview { display: flex; flex-direction: column; gap: 4px; overflow-y: auto; flex: 1; }
.session-preview-label { font-family: var(--font-mono); font-size: 9px; color: var(--fg-dim); letter-spacing: 1px; }
.session-item { display: flex; align-items: center; gap: 8px; padding: 6px 10px; font-size: 12px; }
.session-item-icon { color: var(--fg-dim); font-size: 12px; }
.session-set .session-item-icon { color: var(--accent); }
.session-item-info { display: flex; flex-direction: column; gap: 2px; }
.session-item-name { color: #aaa; }
.session-set .session-item-name { color: #ccc; font-weight: 500; }
.session-item-meta { font-family: var(--font-mono); font-size: 9px; color: var(--fg-dim); }
.session-empty { color: var(--fg-dim); font-size: 12px; text-align: center; padding: 20px 0; }

/* Session active */
.session-active-header { display: flex; justify-content: space-between; align-items: center; }
.session-active-label { font-family: var(--font-mono); font-size: 9px; font-weight: 500; color: var(--accent); letter-spacing: 1px; }
.session-active-count { font-family: var(--font-mono); font-size: 11px; font-weight: 500; color: var(--fg-inverse); }
.session-progress-bar { width: 100%; height: 4px; border-radius: 2px; background: #333; }
.session-progress-fill { height: 4px; border-radius: 2px; background: var(--accent); transition: width 0.3s; }
.session-now-playing { padding: 12px; border-radius: 4px; background: var(--dark-hover); display: flex; flex-direction: column; gap: 6px; }
.session-now-label { font-family: var(--font-mono); font-size: 9px; color: var(--fg-dim); letter-spacing: 1px; }
.session-now-info { display: flex; flex-direction: column; gap: 2px; }
.session-now-name { font-size: 14px; font-weight: 500; color: var(--fg-inverse); }
.session-now-meta { font-family: var(--font-mono); font-size: 11px; color: var(--fg-muted); }
.session-next { padding: 10px 12px; border-radius: 4px; border: 1px solid #333; display: flex; flex-direction: column; gap: 4px; }
.session-next-label { font-family: var(--font-mono); font-size: 9px; color: var(--fg-dim); letter-spacing: 1px; }
.session-next-val { font-family: var(--font-heading); font-size: 24px; font-weight: 300; color: #444; }
.session-history { display: flex; flex-direction: column; gap: 2px; overflow-y: auto; flex: 1; }
.session-history-label { font-family: var(--font-mono); font-size: 9px; color: #444; letter-spacing: 1px; }
.session-history-item { display: flex; align-items: center; gap: 8px; padding: 4px 10px; font-size: 11px; color: var(--fg-dim); }
.session-history-check { color: var(--fg-dim); }
.session-end {
  width: 100%; padding: 10px; border: 1px solid #555; border-radius: 4px;
  background: transparent; color: var(--fg-muted);
  font-family: var(--font-body); font-size: 12px; cursor: pointer;
}
.session-end:hover { border-color: #888; color: var(--fg-inverse); }
.tab.session-live { background: var(--accent); }

/* Tune list */
.tune-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.tune-row {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  border-radius: 4px;
  gap: 12px;
  cursor: pointer;
}
.tune-row:hover { background: var(--dark-hover); }
.tune-row.active { background: var(--dark-hover); }
.tune-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #444;
  flex-shrink: 0;
}
.tune-dot.active { background: var(--accent); }
.tune-info { flex: 1; display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.tune-name {
  font-size: 13px;
  color: #aaa;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tune-row.active .tune-name { color: var(--fg-inverse); font-weight: 500; }
.tune-meta { font-family: var(--font-mono); font-size: 10px; color: var(--fg-dim); text-transform: capitalize; }
.tune-add {
  border: none;
  background: transparent;
  color: var(--fg-dim);
  font-size: 14px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s;
}
.tune-row:hover .tune-add { opacity: 1; }

/* Main area */
.main-area {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  overflow: hidden;
}

.tune-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 32px;
}
.title-block { display: flex; flex-direction: column; gap: 2px; }
.tune-title {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 400;
  cursor: pointer;
  border-bottom: 1px solid transparent;
}
.tune-title:hover { border-bottom-color: var(--border); }
.inline-edit-title {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 400;
  border: none;
  border-bottom: 2px solid var(--accent);
  background: transparent;
  outline: none;
  padding: 0;
  width: 100%;
  color: var(--fg);
}
.meta-field.clickable {
  cursor: pointer;
  text-transform: capitalize;
  border-bottom: 1px solid transparent;
}
.meta-field.clickable:hover { border-bottom-color: var(--fg-secondary); }
.meta-sep { cursor: default; }
.delete-tune {
  border: none;
  background: transparent;
  color: #999;
  font-family: var(--font-body);
  font-size: 11px;
  cursor: pointer;
  margin-left: 8px;
}
.delete-tune:hover { color: #e55; }
.tune-title-meta { font-family: var(--font-mono); font-size: 11px; color: var(--fg-secondary); letter-spacing: 0.5px; text-transform: capitalize; }

.section-controls { display: flex; gap: 8px; }
.section-btn {
  padding: 5px 12px;
  border-radius: 4px;
  border: 1px solid #ccc;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-secondary);
  cursor: pointer;
}
.section-btn.active {
  background: var(--accent);
  color: var(--fg-inverse);
  border-color: var(--accent);
  font-weight: 600;
}

.divider { height: 1px; background: var(--border); }

/* Sheet music */
.sheet-area {
  flex: 1;
  min-width: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 32px 40px;
  background: var(--surface-sheet);
}
.sheet-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--fg-secondary);
  font-size: 14px;
}

/* abcjs overrides */
#sheet-music { max-width: 990px; margin: 0 auto; }

/* Edit toggle button */
.edit-toggle {
  padding: 5px 12px;
  border-radius: 4px;
  border: none;
  background: var(--dark);
  color: var(--fg-inverse);
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  margin-left: 8px;
}
.edit-toggle.active {
  background: var(--accent);
}

/* Editor split */
.editor-split {
  display: flex;
  flex-direction: column;
  height: 180px;
  min-height: 120px;
  flex-shrink: 0;
}
.split-divider {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 32px;
}
.split-line { flex: 1; height: 1px; background: var(--border); }
.split-grip { color: #ccc; font-size: 14px; cursor: row-resize; user-select: none; }

/* Editor panel */
.editor-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #1E1E1E;
  padding: 16px 32px;
  gap: 8px;
  min-height: 0;
}
.editor-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.editor-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--fg-muted);
  letter-spacing: 1px;
}
.editor-hints {
  display: flex;
  gap: 12px;
}
.editor-hint {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-dim);
}
.editor-hint.accent { color: var(--accent); }
.editor-textarea {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  resize: none;
  color: #D4D4D4;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  padding: 8px 0;
  min-height: 0;
}
.editor-textarea::placeholder { color: #444; }

/* Playback bar */
.playback-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  background: var(--bar-bg);
}
.left-controls, .center-controls, .right-controls {
  display: flex;
  align-items: center;
  gap: 16px;
}
.play-btn {
  padding: 10px 20px;
  border-radius: 4px;
  border: none;
  background: var(--accent);
  color: var(--fg-inverse);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
}
.play-btn.playing {
  background: var(--dark);
}
.playback-status {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  margin-left: 4px;
}
.control-btn.active {
  background: var(--accent);
  color: var(--fg-inverse);
  border-color: var(--accent);
}
.control-btn, .tempo-btn {
  padding: 6px 14px;
  border-radius: 4px;
  border: 1px solid #ccc;
  background: transparent;
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--fg-secondary);
  cursor: pointer;
}
.tempo-label { font-family: var(--font-mono); font-size: 12px; font-weight: 500; cursor: default; }
.tempo-label.tempo-modified { color: var(--accent); }
.guitar-btn {
  padding: 8px 14px;
  border-radius: 4px;
  border: none;
  background: var(--dark);
  color: var(--fg-inverse);
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
}
.guitar-btn.active {
  background: var(--accent);
}

/* Scrollbar styling for tune list */
.tune-list::-webkit-scrollbar { width: 4px; }
.tune-list::-webkit-scrollbar-track { background: transparent; }
.tune-list::-webkit-scrollbar-thumb { background: var(--border-dark); border-radius: 2px; }