:root {
  --bg: #faf8f4;
  --fg: #1f1d1a;
  --muted: #6f6a62;
  --line: #e4dfd6;
  --card: #ffffff;
  --accent: #b5471d;
  --accent-soft: #f6e3d8;
  --chord: #0b5fa5;
  --raw: #8a837a;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17191c;
    --fg: #e8e6e1;
    --muted: #9a968f;
    --line: #2c3036;
    --card: #1f2226;
    --accent: #e3875f;
    --accent-soft: #3a2a22;
    --chord: #7cb8f0;
    --raw: #7e8791;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.45;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.top {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  padding: 0.6rem 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--fg);
  font-size: 1.15rem;
}
.brand:hover { text-decoration: none; color: var(--accent); }

.logo { display: inline-flex; line-height: 0; }
.logo svg { width: 1.7em; height: 1.7em; }
.brand .logo svg { filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.2)); }

.empty {
  display: grid;
  justify-items: center;
  gap: 0.75rem;
  padding: 3rem 1rem;
  color: var(--muted);
  text-align: center;
}
.empty .logo svg {
  width: 120px;
  height: 120px;
  opacity: 0.9;
  filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.18));
}
.empty p { margin: 0; }

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 1rem;
}

/* Buttons and inputs */
button, .btn, input, select, textarea {
  font: inherit;
  color: inherit;
}
button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.45rem 0.8rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--card);
  cursor: pointer;
  min-height: 2.4rem;
  user-select: none;
}
button:hover, .btn:hover { border-color: var(--accent); text-decoration: none; }
button:disabled { opacity: 0.5; cursor: default; }
button.primary, .btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
button.danger { color: var(--accent); }
.icon { min-width: 2.4rem; padding-inline: 0.5rem; font-weight: 700; }

input[type="search"], input[type="text"], select, textarea {
  padding: 0.5rem 0.7rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--card);
  min-height: 2.4rem;
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

/* Song list */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 0.75rem;
}
.toolbar input[type="search"] { flex: 1 1 200px; }
.count { color: var(--muted); margin: 0 0 0.5rem; font-size: 0.9rem; }

.songs {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--card);
  overflow: hidden;
}
.songs li + li { border-top: 1px solid var(--line); }
.songs a {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.15rem 0.75rem;
  padding: 0.65rem 0.9rem;
  color: inherit;
}
.songs a:hover { background: var(--accent-soft); text-decoration: none; }
.songs .title { font-weight: 600; grid-column: 1; grid-row: 1; }
.songs .artist { color: var(--muted); font-size: 0.9rem; grid-column: 1; grid-row: 2; }
.badge {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.1rem 0.5rem;
}

/* Song page */
.back {
  display: inline-block;
  margin: 0.25rem 0 0.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.back:hover { color: var(--accent); text-decoration: none; }
.song-head h1 { margin: 0.25rem 0 0; font-size: 1.6rem; line-height: 1.2; }

/* Chord diagrams */
.chord.interactive { cursor: pointer; border-radius: 3px; }
.chord.interactive:hover { background: var(--accent-soft); }
.chord-panel {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 30;
  width: 150px;
  padding: 0.45rem 0.6rem 0.4rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
  color: var(--fg);
}
.chord-panel.pinned { border-color: var(--chord); }
.chord-panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--chord);
}
.chord-panel .icon {
  min-height: 1.6rem;
  min-width: 1.6rem;
  padding: 0;
  border: none;
  background: none;
  color: var(--muted);
  font-size: 1.1rem;
}
.chord-panel .hint { margin: 0.3rem 0 0; }
.diagram svg { display: block; width: 100%; height: auto; }
.song-head .artist { margin: 0.15rem 0 0.5rem; color: var(--muted); font-size: 1.05rem; }
.meta { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0.25rem 0; }
.tag {
  font-size: 0.8rem;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}
.used { display: flex; flex-wrap: wrap; gap: 0.35rem; margin: 0.5rem 0 0.75rem; }
.used .chord {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--chord);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.05rem 0.45rem;
  background: var(--card);
}

.controls {
  position: sticky;
  top: 3.1rem;
  z-index: 5;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  padding: 0.5rem 0;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  margin-bottom: 0.75rem;
}
.group { display: inline-flex; align-items: center; gap: 0.3rem; }
.group .label { color: var(--muted); font-size: 0.85rem; margin-right: 0.2rem; }
.shift {
  min-width: 2.4rem;
  text-align: center;
  font-family: var(--mono);
  font-weight: 700;
  cursor: pointer;
}
.shift.active { color: var(--accent); }

/* The sheet itself */
.sheet-wrap { overflow-x: auto; padding-bottom: 3rem; }
.sheet {
  font-family: var(--mono);
  line-height: 1.35;
}
.block { margin: 0 0 1.2em; }
.heading {
  font-family: var(--sans);
  font-size: 0.95em;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 0.3em;
}
.line { white-space: pre; }
.chords { color: var(--chord); font-weight: 700; }
.chords .raw { color: var(--raw); font-weight: 400; }
.lyric { }

/* Editor */
.editor .import {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 1rem;
  padding: 0.6rem 0.75rem;
  border: 1px dashed var(--line);
  border-radius: 10px;
}
.editor .import input { flex: 1 1 260px; }
.editor .import .hint { margin: 0; flex-basis: 100%; }
.editor .fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}
.editor label { display: grid; gap: 0.2rem; font-size: 0.85rem; color: var(--muted); }
.editor .panes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
@media (min-width: 900px) {
  .editor .panes { grid-template-columns: 1fr 1fr; }
}
.editor textarea {
  width: 100%;
  min-height: 60vh;
  font-family: var(--mono);
  font-size: 0.9rem;
  line-height: 1.35;
  white-space: pre;
  overflow-wrap: normal;
  overflow-x: auto;
  resize: vertical;
  tab-size: 4;
}
.editor .preview {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--card);
  padding: 0.75rem 1rem;
  overflow-x: auto;
  min-height: 60vh;
  font-size: 0.9rem;
}
.editor .actions { display: flex; gap: 0.5rem; flex-wrap: wrap; margin: 0.75rem 0; align-items: center; }
.hint { color: var(--muted); font-size: 0.85rem; margin: 0.4rem 0 0; }
.error { color: var(--accent); font-size: 0.9rem; }

/* Backup */
.backup {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}
.backup h2 { font-size: 1rem; margin: 0 0 0.25rem; color: var(--fg); }
.row { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; margin: 0.5rem 0; }
.msg { min-height: 1.2em; }