:root {
  --bg: #0e1014; --panel: #161920; --panel2: #1e222b; --line: #2a2f3a;
  --text: #ecebe6; --muted: #8e939d; --accent: #f5b642; --on-accent: #1b1405;
  --chord: #6fc3ff; --danger: #ff6b6b; --ok: #4cd07d;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text);
  font: 16px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: inherit; text-decoration: none; }
[hidden] { display: none !important; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: .45em; min-height: 42px;
  padding: 0 14px; border-radius: 10px; border: 1px solid var(--line); background: var(--panel2);
  color: var(--text); font: inherit; cursor: pointer; white-space: nowrap; user-select: none;
  -webkit-tap-highlight-color: transparent; }
.btn:hover { border-color: #3d4453; }
.btn:disabled { opacity: .35; cursor: default; }
.btn.icon { min-width: 42px; padding: 0 10px; }
.btn.primary, .btn.on { background: var(--accent); color: var(--on-accent); border-color: transparent; font-weight: 600; }
.btn.ghost:not(.on) { background: transparent; }
.btn.danger { color: var(--danger); }
.btn.big { min-height: 60px; font-size: 20px; padding: 0 26px; }

.input { min-height: 42px; padding: 0 12px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--panel); color: var(--text); font: inherit; min-width: 0; }
.input.sm { min-height: 36px; font-size: 14px; padding: 0 8px; max-width: 150px; }
.input.full { width: 100%; margin-bottom: 8px; }

header.top { display: flex; align-items: center; gap: 12px; padding: calc(10px + env(safe-area-inset-top)) 16px 10px; border-bottom: 1px solid var(--line);
  position: sticky; top: 0; background: var(--bg); z-index: 5; flex-wrap: wrap; }
.brand { font-weight: 800; font-size: 20px; letter-spacing: .2px; }
.brand span { color: var(--accent); }
nav { display: flex; gap: 4px; }
nav a { padding: 8px 12px; border-radius: 8px; color: var(--muted); }
nav a.on { background: var(--panel2); color: var(--text); }
.spacer, .grow { flex: 1; min-width: 0; }

.page { max-width: 1100px; margin: 0 auto; padding: 16px; }
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.toolbar > .input { flex: 1; min-width: 180px; }
h2 { margin: 0; font-size: 22px; }
h3 { font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 0 0 8px; }

.list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.row { display: flex; align-items: center; gap: 8px; padding: 8px 10px 8px 14px; background: var(--panel);
  border: 1px solid var(--line); border-radius: 12px; }
.row .t { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row .num { color: var(--muted); width: 1.6em; text-align: right; font-variant-numeric: tabular-nums; }
.sub { color: var(--muted); font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.empty { color: var(--muted); padding: 28px; text-align: center; border: 1px dashed var(--line); border-radius: 12px; }
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 760px) {
  .cols { grid-template-columns: 1fr; }
  .row .input.sm { display: none; }
}

.editor { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; height: calc(100vh - 200px); min-height: 420px; }
.editor textarea { width: 100%; height: 100%; resize: none; background: var(--panel); color: var(--text);
  border: 1px solid var(--line); border-radius: 12px; padding: 12px; font: 14px/1.55 ui-monospace, Consolas, monospace; }
.preview { overflow: auto; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; --fs: .8; }
@media (max-width: 860px) {
  .editor { grid-template-columns: 1fr; height: auto; }
  .editor textarea, .preview { height: 50vh; }
}
.help { margin-top: 12px; color: var(--muted); }
.help summary { cursor: pointer; }
.help pre { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 12px; overflow: auto; font-size: 13px; }

.toast { position: fixed; left: 50%; bottom: 96px; transform: translateX(-50%); background: var(--panel2); color: var(--text);
  border: 1px solid var(--line); padding: 10px 16px; border-radius: 10px; z-index: 50; box-shadow: 0 8px 24px rgba(0,0,0,.4);
  max-width: calc(100vw - 32px); }

/* ---------- song sheet ---------- */
.sheet { font-size: calc(26px * var(--fs, 1)); line-height: 1.25; }
.sheet .line { display: flex; flex-wrap: wrap; align-items: flex-end; padding: .06em .3em; margin: 0 -.3em;
  border-radius: .3em; transition: opacity .35s, background-color .35s; }
.sheet .seg { display: inline-flex; flex-direction: column; }
.sheet .ch { color: var(--chord); font-weight: 700; font-size: .82em; min-height: 1.25em; white-space: nowrap; }
.sheet .ch:not(:empty) { padding-right: .4em; }
.sheet .ly { white-space: pre; }
.sheet.hide-chords .ch { display: none; }
.sheet .sec { margin-top: 1em; font-size: .55em; text-transform: uppercase; letter-spacing: .14em; color: var(--muted); font-weight: 700; }
.sheet .sec-chorus { color: var(--accent); }
.sheet .cmt { font-size: .7em; color: var(--muted); font-style: italic; margin: .35em 0; }
.sheet .gap { height: .5em; }
.sheet .tab { font: calc(16px * var(--fs, 1))/1.3 ui-monospace, Consolas, monospace; margin: 0; color: #cfd3da; }
.sheet .line.in-chorus { box-shadow: inset 3px 0 0 var(--line); padding-left: .7em; border-radius: 0; }
.sheet .line.done { opacity: .38; }
.sheet .line.active { background: rgba(245, 182, 66, .10); }
.sheet .w { transition: color .15s; }
.sheet .w.hit { color: var(--accent); }
.endcard { padding: 2.5em 0 60vh; text-align: center; font-size: 16px; }
.endcard .sub { margin-bottom: 10px; }

/* ---------- perform view ---------- */
.perform { position: fixed; inset: 0; display: flex; flex-direction: column; background: var(--bg); }
.pbar { display: flex; align-items: center; gap: 8px; padding: calc(6px + env(safe-area-inset-top)) 10px 6px; border-bottom: 1px solid var(--line); }
.ptitle .t { font-weight: 700; font-size: 18px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pos { color: var(--muted); font-variant-numeric: tabular-nums; }
.stage { flex: 1; overflow-y: auto; position: relative; padding: 16px max(16px, 5vw) 0; overscroll-behavior: contain; }
.heard { padding: 4px 16px; font-size: 13px; color: var(--muted); white-space: nowrap; overflow: hidden;
  text-overflow: ellipsis; min-height: 24px; border-top: 1px solid var(--line); }
.pctl { display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: center; justify-content: center;
  padding: 8px 10px calc(8px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); background: var(--panel); }
.grp { display: flex; align-items: center; gap: 4px; }
.play { min-width: 112px; }
.val { min-width: 2.6em; text-align: center; font-variant-numeric: tabular-nums; color: var(--muted); font-size: 15px; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: #5a5f69; display: inline-block; }
.dot.starting { background: var(--accent); }
.dot.listening { background: var(--ok); animation: pulse 1.2s ease-in-out infinite; }
.dot.error { background: var(--danger); }
@keyframes pulse { 50% { opacity: .3; } }
@media (prefers-reduced-motion: reduce) { .dot.listening { animation: none; } }

.busy { position: fixed; inset: 0; z-index: 60; display: grid; place-items: center; background: rgba(0, 0, 0, .55); padding: 16px; }
.busy-card { display: flex; align-items: center; gap: 14px; background: var(--panel2); border: 1px solid var(--line);
  border-radius: 14px; padding: 18px 22px; max-width: 420px; box-shadow: 0 12px 32px rgba(0,0,0,.5); }
.spinner { width: 22px; height: 22px; flex: none; border-radius: 50%; border: 3px solid var(--line); border-top-color: var(--accent);
  animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* chord charts (lines with only chords / bar lines) */
.sheet .line.chart { gap: .2em .8em; align-items: baseline; }
.sheet .ch-in { color: var(--chord); font-weight: 700; }
.sheet .line.bars { display: grid; grid-template-columns: repeat(var(--cols, 4), minmax(0, 1fr)); gap: 0;
  margin: .15em 0; }
.sheet .bars .cell:last-child { border-right: 2px solid var(--line); }
.sheet .bars .cell { display: flex; flex-wrap: wrap; gap: 0 .5em; align-items: baseline; padding: .15em .5em;
  border-left: 2px solid var(--line); min-width: 0; }
.sheet .bars .rep { color: var(--muted); }

/* bar highlight (chord charts) */
.sheet .bars .cell { position: relative; transition: opacity .25s, background-color .15s; }
.sheet .bars .cell.past { opacity: .4; }
.sheet .bars .cell.now { background: rgba(245, 182, 66, .14); }
.sheet .bars .cell.now::after { content: ''; position: absolute; left: 0; bottom: 0; height: 3px;
  width: calc(var(--p, 0) * 100%); background: var(--accent); }
.sheet .ch-in.on { color: var(--accent); }
.sheet .bars .cell { cursor: pointer; }
.countin { position: absolute; left: 50%; top: 42%; transform: translate(-50%, -50%); z-index: 20; pointer-events: none;
  font-size: min(34vw, 220px); font-weight: 800; color: var(--accent); text-shadow: 0 6px 30px rgba(0,0,0,.6); line-height: 1; }
.countin.pop { animation: pop .45s ease-out; }
@keyframes pop { from { transform: translate(-50%, -50%) scale(1.35); opacity: .3; } to { transform: translate(-50%, -50%) scale(1); opacity: 1; } }
@media (prefers-reduced-motion: reduce) { .countin.pop { animation: none; } }

/* lyrics tap-along */
.wrap { white-space: normal; overflow: visible; margin: 0 0 12px; max-width: 70ch; }
.warn { color: var(--accent); margin: 0 0 10px; }
.lyrics-input { width: 100%; height: calc(100vh - 290px); min-height: 280px; resize: vertical; background: var(--panel);
  color: var(--text); border: 1px solid var(--line); border-radius: 12px; padding: 12px; font: 16px/1.6 system-ui, sans-serif; margin-bottom: 12px; }
.review { max-height: calc(100vh - 250px); }
.sync .sync-body { flex: 1; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 22px;
  padding: 16px; text-align: center; user-select: none; -webkit-user-select: none; touch-action: manipulation; cursor: pointer; }
.sync-status { display: flex; align-items: center; gap: 18px; }
.sync-chord { font-size: 44px; font-weight: 800; color: var(--chord); min-width: 3ch; }
.beats { display: flex; gap: 8px; }
.beats i { width: 14px; height: 14px; border-radius: 50%; background: var(--line); }
.beats i.on { background: var(--accent); }
.beats i:first-child.on { box-shadow: 0 0 0 3px rgba(245, 182, 66, .35); }
.sync-lines { display: flex; flex-direction: column; gap: 10px; max-width: 900px; }
.s-prev { color: var(--muted); font-size: 20px; min-height: 1.3em; text-decoration: line-through; text-decoration-color: rgba(142,147,157,.4); }
.s-label { color: var(--accent); font-size: 13px; text-transform: uppercase; letter-spacing: .14em; font-weight: 700; min-height: 1.2em; }
.s-next { font-size: clamp(26px, 5vw, 44px); font-weight: 700; line-height: 1.2; }
.s-after { color: var(--muted); font-size: 20px; min-height: 1.3em; }
.tapbtn { min-width: 200px; }

/* capo chooser */
.capo-panel { position: absolute; left: 50%; bottom: 120px; transform: translateX(-50%); z-index: 30;
  width: min(720px, calc(100vw - 24px)); max-height: min(70vh, 640px); display: flex; flex-direction: column;
  background: var(--panel2); border: 1px solid var(--line); border-radius: 14px; box-shadow: 0 16px 40px rgba(0,0,0,.55); }
.capo-head { display: flex; align-items: center; gap: 12px; padding: 10px 10px 10px 16px; border-bottom: 1px solid var(--line); }
.capo-head .sub { white-space: normal; }
.capo-list { overflow-y: auto; padding: 6px; }
.capo-row { display: grid; grid-template-columns: 5.5em 1fr auto auto; align-items: center; gap: 12px; width: 100%;
  padding: 10px 12px; border: 1px solid transparent; border-radius: 10px; background: none; color: var(--text); font: inherit; text-align: left; cursor: pointer; }
.capo-row:hover { background: var(--panel); }
.capo-row.on { border-color: var(--accent); background: rgba(245, 182, 66, .08); }
.capo-fret { color: var(--muted); font-variant-numeric: tabular-nums; }
.capo-shapes { color: var(--chord); font-weight: 700; word-spacing: .35em; }
.capo-diff { font-size: 13px; white-space: nowrap; }
.capo-diff.d0, .capo-diff.d1 { color: var(--ok); }
.capo-diff.d2 { color: var(--text); }
.capo-diff.d3, .capo-diff.d4 { color: var(--danger); }
.capo-best { font-size: 12px; font-weight: 700; color: var(--on-accent); background: var(--accent); padding: 2px 8px; border-radius: 99px; }
@media (max-width: 600px) {
  .capo-row { grid-template-columns: 4.5em 1fr; }
  .capo-diff, .capo-best { grid-column: 2; justify-self: start; }
}
.shift { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 0 0 12px; }
.shift .sub { white-space: normal; }

/* setlist drag-to-reorder */
.grip { display: flex; align-items: center; justify-content: center; min-width: 40px; min-height: 44px; margin: -8px 0 -8px -10px;
  font-size: 22px; color: var(--muted); cursor: grab; touch-action: none; user-select: none; -webkit-user-select: none; }
.grip:hover { color: var(--text); }
.reordering, .reordering * { user-select: none; -webkit-user-select: none; cursor: grabbing; }
.row.dragging { transform: translateY(var(--dy, 0)); position: relative; z-index: 10; background: var(--panel2);
  border-color: var(--accent); box-shadow: 0 10px 28px rgba(0, 0, 0, .5); }
.row.dragging .grip { color: var(--accent); }