:root {
  color-scheme: light;
  --bg: #f5f3ee;
  --panel: #ffffff;
  --ink: #202124;
  --muted: #6d7178;
  --line: #d8d3ca;
  --strong-line: #b9b1a5;
  --accent: #1f7a66;
  --accent-dark: #145747;
  --accent-soft: #dff1eb;
  --chord: #255f85;
  --chord-bad: #a4483c;
  --lyric: #7c5a18;
  --warning: #a15c00;
  --danger: #a43d3d;
  --beat-width: 72px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font: 14px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
select,
textarea {
  font: inherit;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
}

.file-actions,
.timeline-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.button,
.icon-button {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 6px;
  min-height: 34px;
  padding: 7px 12px;
  cursor: pointer;
}

.button:hover,
.icon-button:hover {
  border-color: var(--accent);
}

.button:disabled,
.icon-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.button.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.button.ghost {
  background: transparent;
}

.button.danger {
  color: var(--danger);
  border-color: #e0b3b3;
}

.compact-tool {
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 34px;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.compact-tool select {
  width: 72px;
  min-height: 24px;
  padding: 2px 6px;
  border-radius: 5px;
}

.compact-tool input {
  width: 82px;
  min-height: 24px;
  padding: 2px 6px;
  border-radius: 5px;
}

.full-chord-tool {
  min-width: 132px;
}

.icon-button {
  width: 34px;
  padding: 0;
  font-weight: 700;
}

input[type="file"] {
  display: none;
}

.meta-fields {
  display: grid;
  grid-template-columns: minmax(160px, 1.5fr) minmax(110px, 1fr) 76px 72px 100px 96px 90px 76px 60px 86px;
  gap: 8px;
  align-items: end;
}

.capo-source-tag {
  font-size: 10px;
  color: var(--muted);
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-radius: 4px;
  min-height: 20px;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}

label {
  display: grid;
  gap: 4px;
  color: var(--muted);
  font-size: 12px;
}

input,
select,
textarea {
  width: 100%;
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  padding: 6px 8px;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  outline: 2px solid var(--accent-soft);
}

textarea {
  resize: vertical;
  min-height: 160px;
  line-height: 1.5;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 16px;
  padding: 16px;
}

.timeline-panel,
.inspector {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.timeline-panel {
  overflow: hidden;
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 16px;
  border-bottom: 1px solid var(--line);
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: 20px;
  line-height: 1.2;
}

h2 {
  font-size: 18px;
  margin-bottom: 16px;
}

h3 {
  font-size: 13px;
  margin-bottom: 8px;
}

#chartSummary {
  margin-top: 4px;
  color: var(--muted);
}

.message-area {
  min-height: 34px;
  padding: 8px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.message-area.warning {
  color: var(--warning);
  background: #fff7e8;
}

.message-area.error {
  color: var(--danger);
  background: #fff0f0;
}

.message-area.notice {
  color: var(--accent-dark);
  background: var(--accent-soft);
}

.quick-chord-palette {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
  min-height: 38px;
  padding: 7px 16px;
  border-bottom: 1px solid var(--line);
  background: #fffdf8;
}

.quick-chord-chip {
  display: inline-flex;
  align-items: center;
  overflow: hidden;
  border: 1px solid rgba(37, 95, 133, 0.24);
  border-radius: 6px;
  background: #fff;
}

.quick-chord-chip.active {
  border-color: var(--chord);
  background: #e9f4fb;
}

.quick-chord-chip-name,
.quick-chord-chip-remove {
  min-height: 26px;
  border: 0;
  background: transparent;
  color: var(--chord);
  cursor: pointer;
}

.quick-chord-chip-name {
  padding: 3px 8px;
  font-weight: 800;
}

.quick-chord-chip-remove {
  width: 24px;
  border-left: 1px solid rgba(37, 95, 133, 0.18);
  color: var(--muted);
  font-weight: 900;
}

.quick-chord-chip-remove:hover {
  color: var(--danger);
  background: #fff0f0;
}

.quick-chord-chip-remove:disabled {
  cursor: not-allowed;
  opacity: 0.4;
}

.download-link {
  color: var(--accent-dark);
  font-weight: 700;
  text-decoration: none;
}

.download-link:hover {
  text-decoration: underline;
}

.timeline-scroll {
  overflow: auto;
  height: calc(100vh - 212px);
  background:
    linear-gradient(90deg, rgba(216, 211, 202, 0.45) 1px, transparent 1px) 0 0 / var(--grid-width) 100%,
    linear-gradient(90deg, rgba(185, 177, 165, 0.8) 1px, transparent 1px) 0 0 / var(--beat-width) 100%,
    #fbfaf7;
}

.timeline-canvas {
  position: relative;
  min-height: 520px;
  padding-top: 40px;
  cursor: grab;
}

.timeline-canvas.panning {
  cursor: grabbing;
}

.bar {
  position: absolute;
  top: 40px;
  height: 360px;
  border-left: 2px solid var(--strong-line);
  border-right: 1px solid rgba(185, 177, 165, 0.4);
  cursor: pointer;
}

.bar.active {
  background: rgba(47, 99, 160, 0.08);
  box-shadow: inset 0 0 0 2px rgba(47, 99, 160, 0.32);
}

.bar.range-selected {
  background: rgba(244, 182, 63, 0.12);
  box-shadow: inset 0 0 0 3px rgba(244, 182, 63, 0.42);
}

.bar-label {
  position: absolute;
  top: -30px;
  left: 6px;
  z-index: 7;
  min-width: 26px;
  padding: 3px 7px;
  border: 1px solid rgba(47, 99, 160, 0.24);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 800;
  line-height: 16px;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(24, 42, 58, 0.12);
}

.bar:hover .bar-label,
.bar.active .bar-label,
.bar.range-selected .bar-label {
  border-color: var(--accent);
  background: #fff7e8;
  color: var(--accent-dark);
}

.bar.range-selected .bar-label {
  box-shadow: 0 0 0 3px rgba(244, 182, 63, 0.2), 0 1px 3px rgba(24, 42, 58, 0.12);
}

.bar-actions {
  position: absolute;
  top: -32px;
  right: 6px;
  display: flex;
  gap: 4px;
  z-index: 4;
  opacity: 0;
  transition: opacity 0.12s ease;
}

.bar:hover .bar-actions {
  opacity: 1;
}

.bar-actions button {
  width: 26px;
  height: 24px;
  border: 1px solid rgba(138, 112, 74, 0.28);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--accent-dark);
  font-size: 11px;
  font-weight: 800;
  cursor: pointer;
}

.bar-actions button:hover {
  border-color: var(--accent);
  background: #fff7e8;
}

.chord-add-row {
  position: absolute;
  top: 18px;
  left: 0;
  right: 0;
  height: 22px;
  z-index: 3;
  opacity: 0;
  transition: opacity 0.12s ease;
}

.bar:hover .chord-add-row,
.bar.active .chord-add-row {
  opacity: 1;
}

.chord-add-button {
  position: absolute;
  width: 18px;
  height: 18px;
  transform: translateX(-50%);
  border: 1px solid rgba(37, 95, 133, 0.35);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.94);
  color: var(--chord);
  font-size: 12px;
  font-weight: 900;
  line-height: 16px;
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.12);
}

.chord-add-button:hover {
  background: #e9f4fb;
  border-color: var(--chord);
}

.section-label {
  position: absolute;
  top: -40px;
  left: 0;
  z-index: 3;
  min-width: 120px;
  padding: 4px 8px;
  background: var(--accent-dark);
  color: #fff;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
}

.lane-title {
  position: sticky;
  left: 0;
  z-index: 2;
  width: 72px;
  padding: 4px 8px;
  color: var(--muted);
  background: rgba(251, 250, 247, 0.9);
  border-right: 1px solid var(--line);
}

.chord-lane-title {
  top: 18px;
}

.lyric-lane-title {
  top: 136px;
}

.chord-block,
.lyric-token {
  position: absolute;
  display: flex;
  align-items: center;
  border-radius: 6px;
  cursor: grab;
  user-select: none;
  white-space: nowrap;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.14);
}

.chord-block {
  top: 78px;
  height: 38px;
  min-width: 32px;
  padding: 0 16px 0 10px;
  background: var(--chord);
  color: #fff;
  font-weight: 700;
}

.chord-block.unsupported {
  background: var(--chord-bad);
}

.chord-block.selected {
  outline: 3px solid #f4b63f;
  box-shadow: 0 0 0 3px rgba(244, 182, 63, 0.28), 0 3px 8px rgba(0, 0, 0, 0.16);
  z-index: 11;
}

.chord-block.range-selected {
  outline: 3px solid #f4b63f;
  box-shadow: 0 0 0 3px rgba(244, 182, 63, 0.45), 0 0 0 7px rgba(244, 182, 63, 0.16), 0 3px 8px rgba(0, 0, 0, 0.16);
  filter: brightness(1.08);
  z-index: 12;
}

.chord-block.resizing {
  cursor: ew-resize;
}

.chord-block.editing {
  cursor: text;
}

.chord-block-label {
  pointer-events: none;
}

.chord-block.editing .chord-block-label {
  pointer-events: auto;
  width: 100%;
}

.chord-inline-input {
  width: 100%;
  min-width: 44px;
  height: 26px;
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.96);
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  font-weight: 800;
  padding: 0 5px;
}

.chord-resize-handle {
  position: absolute;
  top: 4px;
  right: 3px;
  width: 10px;
  height: 30px;
  border-radius: 4px;
  cursor: ew-resize;
}

.chord-resize-handle::after {
  content: "";
  position: absolute;
  top: 7px;
  right: 3px;
  width: 2px;
  height: 16px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: -4px 0 0 rgba(255, 255, 255, 0.42);
}

.lyric-token {
  top: 174px;
  justify-content: center;
  min-width: 18px;
  height: 28px;
  padding: 0 4px;
  border: 1px solid #e4c56f;
  background: #fff3bf;
  color: var(--lyric);
  font-size: 13px;
  z-index: 5;
}

.lyric-token.single-glyph {
  box-sizing: border-box;
  width: 17px;
  min-width: 17px;
  padding-inline: 0;
}

.lyric-token.visually-shifted::before {
  content: "";
  position: absolute;
  left: var(--lyric-anchor-offset);
  top: -5px;
  width: 1px;
  height: 5px;
  background: #b69135;
  opacity: 0.7;
}

.lyric-token:hover,
.lyric-token.selected,
.lyric-token.quick-chord-anchor,
.lyric-token.range-selected {
  z-index: 10;
}

.lyric-token.range-selected {
  outline: 3px solid #f4b63f;
  box-shadow: 0 0 0 3px rgba(244, 182, 63, 0.38), 0 0 0 7px rgba(244, 182, 63, 0.14), 0 3px 8px rgba(0, 0, 0, 0.16);
  background: #ffe08a;
}

.lyric-token-text {
  pointer-events: none;
}

.lyric-quick-chord {
  position: fixed;
  z-index: 80;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.16);
  cursor: default;
}

.lane-quick-chord {
  position: fixed;
  z-index: 80;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.16);
  cursor: default;
}

.lane-quick-chord[hidden] {
  display: none;
}

.lane-quick-chord select {
  width: 74px;
  min-height: 28px;
  padding: 3px 6px;
  font-size: 12px;
}

.lane-quick-chord button {
  width: 28px;
  height: 28px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  cursor: pointer;
}

.lyric-quick-chord[hidden] {
  display: none;
}

.lyric-quick-chord select {
  width: 74px;
  min-height: 28px;
  padding: 3px 6px;
  font-size: 12px;
}

.lyric-quick-chord button {
  width: 28px;
  height: 28px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  cursor: pointer;
}

.chord-edit-popover {
  position: fixed;
  z-index: 80;
  display: flex;
  align-items: center;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.16);
  cursor: default;
}

.chord-edit-popover[hidden] {
  display: none;
}

.chord-edit-popover select {
  width: 86px;
  min-height: 30px;
  padding: 3px 6px;
  font-size: 12px;
}

.line-text {
  position: absolute;
  top: 222px;
  height: 24px;
  color: var(--muted);
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  pointer-events: none;
}

.selected {
  outline: 3px solid var(--accent-soft);
  box-shadow: 0 0 0 2px var(--accent), 0 3px 8px rgba(0, 0, 0, 0.16);
}

.dragging {
  cursor: grabbing;
  opacity: 0.86;
}

.inspector {
  padding: 16px;
  position: sticky;
  top: 74px;
  height: calc(100vh - 90px);
  overflow: auto;
}

.field-group,
.selection-panel {
  display: grid;
  gap: 12px;
}

.selection-panel {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.empty-state {
  color: var(--muted);
}

.position-hint {
  color: var(--muted);
  font-size: 12px;
}

.dialog-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(32, 33, 36, 0.28);
}

.dialog-backdrop[hidden] {
  display: none;
}

.dialog {
  width: min(560px, 100%);
  max-height: min(620px, calc(100vh - 48px));
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.24);
  padding: 16px;
}

.overview-dialog {
  width: min(1120px, 100%);
  max-height: calc(100vh - 40px);
}

.help-dialog {
  width: min(720px, 100%);
}

.dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.dialog-header h2 {
  margin: 0;
}

.dialog-summary {
  color: var(--muted);
  margin-bottom: 12px;
}

.help-list {
  color: var(--text);
  margin: 8px 0 16px;
  padding-left: 22px;
}

.help-list li + li {
  margin-top: 6px;
}

.help-code {
  margin: 8px 0 16px;
  padding: 12px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8f5ef;
  font-size: 13px;
  line-height: 1.5;
}

.import-steps {
  margin: 0 0 16px;
  padding-left: 22px;
  color: var(--muted);
}

.import-steps li + li {
  margin-top: 5px;
}

.left-actions {
  justify-content: flex-start;
  margin: 8px 0 16px;
}

.review-grid {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 6px 10px;
  margin: 0;
}

.review-grid dt {
  color: var(--muted);
  font-weight: 700;
}

.review-grid dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.review-error {
  color: var(--danger);
}

.manual-import-details {
  margin-top: 12px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
}

.manual-import-details summary {
  cursor: pointer;
  color: var(--muted);
  font-weight: 700;
}

.manual-import-details .import-steps {
  margin-top: 10px;
}

.dialog-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 20px;
  color: var(--ink);
}

.overview-content {
  display: grid;
  gap: 12px;
}

.overview-error {
  border: 1px solid #f0b4a8;
  border-radius: 6px;
  background: #fff4f1;
  color: #8c2f20;
  padding: 12px;
  font-weight: 700;
}

.overview-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 10px;
}

.overview-tabs button {
  min-height: 30px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--muted);
  padding: 5px 10px;
  cursor: pointer;
}

.overview-tabs button.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-weight: 700;
}

.overview-line-controls {
  display: flex;
  align-items: end;
  gap: 8px;
  margin: -4px 0 12px;
}

.overview-line-controls label {
  width: 180px;
}

.overview-line-controls button:disabled,
.overview-line-controls select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.overview-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(160px, 1fr));
  gap: 10px;
}

.overview-bar {
  position: relative;
  display: grid;
  grid-template-rows: 16px 30px 36px;
  gap: 3px;
  min-height: 94px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fffdf8;
  color: var(--ink);
  padding: 8px;
  text-align: left;
  cursor: pointer;
}

.overview-bar:hover {
  border-color: var(--accent);
  background: #f7fffb;
}

.overview-bar-number {
  color: var(--muted);
  font-size: 11px;
  line-height: 1;
}

.overview-chords,
.overview-lyrics {
  position: relative;
  border-top: 1px solid rgba(216, 211, 202, 0.7);
  overflow: hidden;
}

.overview-chords span,
.overview-lyrics span {
  position: absolute;
  top: 5px;
  white-space: nowrap;
}

.overview-chords span {
  color: var(--chord);
  font-weight: 800;
  font-size: 14px;
}

.overview-lyrics span {
  color: var(--lyric);
  font-size: 15px;
  cursor: grab;
}

.overview-lyrics span.overview-dragging {
  opacity: 0.45;
  cursor: grabbing;
}

.overview-line-text {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fffdf8;
  color: var(--ink);
  padding: 8px 10px;
  text-align: left;
  cursor: pointer;
}

.overview-line-text:hover {
  border-color: var(--accent);
  background: #f7fffb;
}

.overview-line-range {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.overview-line-title {
  color: var(--ink);
  font-size: 16px;
  font-weight: 800;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dialog-controls {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.dialog-note {
  color: var(--muted);
  font-size: 12px;
}

.dialog-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 14px;
}

.source-registry-dialog {
  width: min(1040px, calc(100vw - 32px));
}

.source-registry-table-wrap {
  max-height: 55vh;
  margin-top: 16px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.source-registry-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.source-registry-table th,
.source-registry-table td {
  padding: 9px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  white-space: nowrap;
}

.source-registry-table th {
  position: sticky;
  top: 0;
  background: var(--panel);
}

.validation-box {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

#validationList {
  display: grid;
  gap: 6px;
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

#validationList .bad {
  color: var(--danger);
}

#validationList .warn {
  color: var(--warning);
}

@media (max-width: 980px) {
  .topbar,
  .workspace {
    grid-template-columns: 1fr;
  }

  .meta-fields {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .inspector {
    position: static;
    height: auto;
  }

  .overview-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .overview-line-text {
    grid-template-columns: 1fr;
  }
}