/* Live — escenario: fondo tinta, letra crema, luz ámbar de reflector.
   Layout: celular = una pantalla a la vez con barra inferior;
   tablet/compu = biblioteca | lista | lector lado a lado. */
:root {
  --ink: #131419;
  --ink-2: #1b1d24;
  --ink-3: #252831;
  --line: #2f333e;
  --cream: #f3eee4;
  --muted: #9a9caa;
  --amber: #f2b544;
  --amber-ink: #2a1d05;
  --chord: #f6c766;
  --live: #ff5d4f;
  --ok: #5fd3a0;
  --reader-bg: #101116;
  --line-2: #444958;
  --danger-line: #5a2a27;
  --key-line: #5b4a22;
  --preview-bg: #2a2214;
  --drop-line: #4a4f5d;
  --drop-over: #1e1a10;
  --current-glow: rgba(242,181,68,.16);
  --font-ui: "Avenir Next", "Segoe UI", Roboto, "Helvetica Neue", system-ui, sans-serif;
  --font-lyric: ui-monospace, "SF Mono", Menlo, Consolas, "Roboto Mono", "Liberation Mono", monospace;
  --r: 10px;
  --lyric-size: 22px;
  color-scheme: dark;
}
/* Modo día: papel cálido (no blanco puro, menos deslumbrante) y acordes en rojo
   tostado, con contraste AA sobre el fondo. */
:root[data-theme="light"] {
  --ink: #f7f3ea;
  --ink-2: #efe9dc;
  --ink-3: #e4dccb;
  --line: #d3c9b5;
  --cream: #1c1a15;
  --muted: #625c4f;
  --amber: #955700;
  --amber-ink: #ffffff;
  --chord: #a83c08;
  --live: #c22d20;
  --ok: #1d7f52;
  --reader-bg: #fffcf5;
  --line-2: #b9ae98;
  --danger-line: #e2aca5;
  --key-line: #d4ad66;
  --preview-bg: #f8e7c2;
  --drop-line: #bfb5a1;
  --drop-over: #f5e8cb;
  --current-glow: rgba(149,87,0,.12);
  color-scheme: light;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--ink); color: var(--cream);
  font: 15px/1.45 var(--font-ui);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}
[hidden] { display: none !important; }
button { font: inherit; color: inherit; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }
svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.muted { color: var(--muted); }
.err { color: var(--live); margin: 0; font-size: 14px; }

/* marca */
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: .02em; min-width: 0; }
.brand .gname { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mark { width: 14px; height: 22px; border-radius: 3px; background: var(--amber); box-shadow: 6px 0 0 -2px var(--ink), 6px 0 0 0 var(--amber); margin-right: 6px; }
.brand.big { font-size: 24px; }

/* botones */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 18px; border-radius: var(--r); border: 1px solid var(--line); background: var(--ink-3); font-weight: 600; }
.btn:hover { border-color: var(--line-2); }
.btn.primary { background: var(--amber); color: var(--amber-ink); border-color: var(--amber); }
.btn.danger { background: transparent; color: var(--live); border-color: var(--danger-line); }
.btn.ghost { background: transparent; }
.btn.small { min-height: 34px; padding: 0 12px; font-size: 14px; }
.icon-btn { display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: var(--r); border: 1px solid var(--line); background: var(--ink-3); }
.icon-btn.big { width: 58px; height: 58px; border-radius: 50%; background: var(--amber); color: var(--amber-ink); border: none; }
.icon-btn.big svg { width: 26px; height: 26px; }
.icon-btn.flat { background: transparent; border-color: transparent; width: 38px; height: 38px; color: var(--muted); }
.icon-btn.flat:hover { color: var(--cream); background: var(--ink-3); }
.icon-btn:disabled { opacity: .35; cursor: default; }
.chip { display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 12px; border-radius: 99px; border: 1px solid var(--line); background: var(--ink-2); font-size: 13px; font-weight: 600; white-space: nowrap; }
.chip.on { background: var(--amber); color: var(--amber-ink); border-color: var(--amber); }

/* acceso */
.gate { min-height: 100%; display: grid; place-items: center; padding: 24px max(16px, env(safe-area-inset-right, 0px)) 24px max(16px, env(safe-area-inset-left, 0px)); }
.gate-card { width: min(380px, 100%); display: grid; gap: 16px; }
.field { display: grid; gap: 6px; font-size: 13px; color: var(--muted); font-weight: 600; }
.field input, .field textarea, .field select { width: 100%; min-height: 46px; padding: 10px 12px; border-radius: var(--r); border: 1px solid var(--line); background: var(--ink-2); font-size: 16px; color: var(--cream); font-weight: 400; }
.field textarea { min-height: 180px; font-family: var(--font-lyric); font-size: 14px; resize: vertical; }
.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > * { flex: 1 1 140px; min-width: 0; }

/* app */
.app { height: 100%; display: grid; grid-template-rows: auto 1fr auto; }
.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: max(10px, env(safe-area-inset-top, 0px)) max(16px, env(safe-area-inset-right, 0px)) 10px max(16px, env(safe-area-inset-left, 0px)); border-bottom: 1px solid var(--line); background: var(--ink); }
.top-right { display: flex; align-items: center; gap: 8px; min-width: 0; }
.conn { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); flex: none; }
.conn.ok { background: var(--ok); }
.conn.bad { background: var(--live); }
.main { min-height: 0; display: grid; }
.panel { min-height: 0; min-width: 0; display: flex; flex-direction: column; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px max(16px, env(safe-area-inset-right, 0px)) 8px max(16px, env(safe-area-inset-left, 0px)); }
.panel-head h2 { margin: 0; font-size: 18px; letter-spacing: .01em; }
.count { color: var(--muted); font-weight: 500; font-size: 14px; font-variant-numeric: tabular-nums; }

/* biblioteca */
.search { display: flex; align-items: center; gap: 8px; margin: 0 max(16px, env(safe-area-inset-right, 0px)) 0 max(16px, env(safe-area-inset-left, 0px)); padding: 0 12px; border-radius: var(--r); border: 1px solid var(--line); background: var(--ink-2); color: var(--muted); }
.search:focus-within { border-color: var(--amber); }
.search input { flex: 1; min-width: 0; height: 48px; border: 0; background: transparent; outline: none; font-size: 17px; color: var(--cream); }
.chips-row { display: flex; gap: 6px; overflow-x: auto; padding: 10px max(16px, env(safe-area-inset-right, 0px)) 6px max(16px, env(safe-area-inset-left, 0px)); scrollbar-width: none; }
.chips-row::-webkit-scrollbar { display: none; }
.song-list, .set-list { list-style: none; margin: 0; padding: 0 0 24px; overflow-y: auto; flex: 1; min-height: 0; }
.song { display: flex; align-items: center; gap: 10px; padding: 10px max(16px, env(safe-area-inset-right, 0px)) 10px max(16px, env(safe-area-inset-left, 0px)); border-bottom: 1px solid var(--line); }
.song-main { flex: 1; min-width: 0; text-align: left; background: none; border: 0; padding: 4px 0; }
.song-title { font-weight: 600; font-size: 16px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.song-meta { color: var(--muted); font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.song-meta .hit { color: var(--chord); }
.key { flex: none; min-width: 44px; text-align: center; padding: 3px 8px; border-radius: 6px; border: 1px solid var(--key-line); color: var(--chord); font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums; }
.key.empty { border-color: var(--line); color: var(--muted); font-weight: 500; }
.key.shifted { border-color: var(--amber); }
.key.shifted small { margin-left: 4px; font-size: 10px; color: var(--muted); font-weight: 600; }
.list-name { background: none; border: 0; padding: 0; font: inherit; color: inherit; cursor: pointer; text-decoration: underline dotted; text-underline-offset: 4px; max-width: 60vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; vertical-align: bottom; }
.lists { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; max-height: 50vh; overflow-y: auto; }
.list-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; }
.list-row.current { border-color: var(--amber); }
.list-row .grow { flex: 1 1 160px; min-width: 0; }
.key-select { background: var(--ink-2); color: var(--chord); border: 1px solid var(--key-line); border-radius: 6px; padding: 4px 6px; font-weight: 700; font-size: 14px; max-width: 150px; }
.web-row { list-style: none; padding: 12px 16px; }
.web-row .btn { width: 100%; justify-content: center; display: inline-flex; align-items: center; gap: 8px; }
.web-row svg, .web-h svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; }
.web-h { margin: 14px 0 6px; font-size: 14px; }
.web-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; max-height: 32vh; overflow-y: auto; }
.web-item { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; }
.web-item .grow { flex: 1 1 150px; min-width: 0; }
.seg-choice { display: flex; gap: 16px; flex-wrap: wrap; }
.seg-choice label { display: flex; gap: 6px; align-items: center; }
.choice-list { display: grid; gap: 10px; }
.choice-list .btn { display: grid; gap: 4px; text-align: left; padding: 14px; height: auto; }
.choice-list .btn .muted { font-size: 13px; font-weight: 400; }
.removed summary { cursor: pointer; color: var(--muted); font-size: 14px; }
.removed pre { max-height: 30vh; overflow: auto; background: var(--ink); border: 1px solid var(--line); border-radius: 8px; padding: 10px; font: 13px/1.4 var(--font-lyric); white-space: pre-wrap; }
.flat-btn { background: none; border: 0; padding: 0; font: inherit; cursor: pointer; }
.song.current .song-title { color: var(--amber); }
.empty-state { padding: 32px max(16px, env(safe-area-inset-right, 0px)) 32px max(16px, env(safe-area-inset-left, 0px)); display: grid; gap: 10px; justify-items: start; }
.empty-state h3 { margin: 0; font-size: 17px; }
.empty-state p { margin: 0; color: var(--muted); max-width: 40ch; }

/* lista */
.set-item { display: flex; align-items: center; gap: 6px; padding: 8px max(10px, env(safe-area-inset-right, 0px)) 8px max(16px, env(safe-area-inset-left, 0px)); border-bottom: 1px solid var(--line); }
.set-num { width: 26px; color: var(--muted); font-variant-numeric: tabular-nums; font-weight: 600; flex: none; }
.set-item.current { background: linear-gradient(90deg, var(--current-glow), transparent 70%); }
.set-item.current .set-num { color: var(--amber); }
.set-item.current .song-title { color: var(--amber); }
.set-item.done .song-title { color: var(--muted); }

/* lector */
.reader { background: var(--reader-bg); }
.reader-head { display: flex; align-items: center; gap: 10px; padding: 10px max(16px, env(safe-area-inset-right, 0px)) 10px max(16px, env(safe-area-inset-left, 0px)); border-bottom: 1px solid var(--line); min-height: 58px; }
.reader-title { flex: 1; min-width: 0; }
.reader-title strong { display: block; font-size: 18px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.reader-title span { color: var(--muted); font-size: 13px; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.status { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); white-space: nowrap; }
.status i { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.status.playing { color: var(--live); }
.status.playing i { background: var(--live); animation: pulse 1.4s infinite; }
.status.paused { color: var(--amber); }
.status.paused i { background: var(--amber); }
@keyframes pulse { 50% { opacity: .3; } }
@media (prefers-reduced-motion: reduce) { .status.playing i { animation: none; } }
.preview-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding: 8px max(16px, env(safe-area-inset-right, 0px)) 8px max(16px, env(safe-area-inset-left, 0px)); background: var(--preview-bg); color: var(--chord); font-size: 13px; font-weight: 600; }
.preview-bar .grow { flex: 1; min-width: 120px; }
.scroller { flex: 1; min-height: 0; overflow-y: auto; overflow-x: hidden; overscroll-behavior: contain; position: relative; outline: none; }
.sheet-content { padding: 18vh max(16px, env(safe-area-inset-right, 0px)) 45vh max(16px, env(safe-area-inset-left, 0px)); }
.lyrics { margin: 0 auto; max-width: 900px; font: 500 var(--lyric-size)/1.55 var(--font-lyric); color: var(--cream); }
.lyrics .ln { white-space: pre-wrap; overflow-wrap: anywhere; min-height: 1.55em; }
.lyrics .ch { color: var(--chord); font-weight: 700; }
.lyrics .sec { color: var(--amber); font-weight: 700; }
/* Acorde encima de su pedazo de letra: el renglón puede partirse sin desalinear */
.lyrics .pair { white-space: normal; margin-top: .15em; }
.lyrics .seg { display: inline-flex; flex-direction: column; vertical-align: bottom; white-space: pre; }
.lyrics .seg .c { color: var(--chord); font-weight: 700; line-height: 1.25; padding-right: 1ch; }
.lyrics .seg .w { line-height: 1.4; }
.lyrics .seg .c.e { padding-right: 0; }   /* letra antes del primer acorde: sin hueco */
.notes { max-width: 900px; margin: 0 auto 18px; padding: 10px 14px; border-left: 3px solid var(--amber); background: var(--ink-2); color: var(--chord); font-size: 15px; white-space: pre-wrap; }
.pdf-pages { display: grid; gap: 12px; justify-items: center; }
.pdf-pages canvas { max-width: 100%; height: auto; border-radius: 4px; background: #fff; }
.invert .pdf-pages canvas { filter: invert(1) hue-rotate(180deg); background: #000; }
.loading { color: var(--muted); text-align: center; padding: 40px 0; }
.big-empty { display: grid; gap: 12px; justify-items: center; text-align: center; padding: 10vh 16px; color: var(--muted); }
.big-empty h3 { margin: 0; color: var(--cream); font-size: 20px; }
.big-empty p { margin: 0; max-width: 34ch; }
.reattach { position: absolute; right: max(16px, env(safe-area-inset-right, 0px)); bottom: 12px; z-index: 2; }

.reader-foot { border-top: 1px solid var(--line); padding: 10px max(16px, env(safe-area-inset-right, 0px)) calc(10px + env(safe-area-inset-bottom, 0px)) max(16px, env(safe-area-inset-left, 0px)); display: grid; gap: 10px; background: var(--ink); }
.transport { display: flex; align-items: center; justify-content: center; gap: 12px; }
.progress { width: 100%; accent-color: var(--amber); height: 28px; margin: 0; }
.foot-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; font-size: 13px; color: var(--muted); }
.foot-row .grp { display: flex; align-items: center; gap: 6px; }
.dur { font-variant-numeric: tabular-nums; color: var(--cream); font-weight: 700; min-width: 42px; text-align: center; }
.next-up { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; flex: 1 1 160px; }
.next-up b { color: var(--cream); font-weight: 600; }

/* barra inferior */
.nav { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; border-top: 1px solid var(--line); background: var(--ink); padding: 0 env(safe-area-inset-right, 0px) env(safe-area-inset-bottom, 0px) env(safe-area-inset-left, 0px); }
.nav button { display: grid; justify-items: center; gap: 2px; padding: 8px 0 10px; background: none; border: 0; color: var(--muted); font-size: 12px; font-weight: 600; }
.nav button.on { color: var(--amber); }

/* hoja inferior / diálogo */
.overlay { position: fixed; inset: 0; z-index: 20; background: rgba(5,6,9,.7); display: flex; align-items: flex-end; justify-content: center; }
.sheet-card { width: min(560px, 100%); max-height: 92%; overflow-y: auto; background: var(--ink-2); border: 1px solid var(--line); border-radius: 16px 16px 0 0; padding: 20px max(16px, env(safe-area-inset-right, 0px)) calc(20px + env(safe-area-inset-bottom, 0px)) max(16px, env(safe-area-inset-left, 0px)); display: grid; gap: 14px; }
.sheet-card h3 { margin: 0; font-size: 19px; }
#sheetBody { display: grid; gap: 14px; }
.sheet-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.drop { display: grid; gap: 6px; justify-items: center; text-align: center; padding: 26px 16px; border: 1.5px dashed var(--drop-line); border-radius: 12px; background: var(--ink); cursor: pointer; }
.drop.over { border-color: var(--amber); background: var(--drop-over); }
.drop strong { font-size: 16px; }
.divider { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 13px; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.up-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.up-item { display: grid; gap: 4px; font-size: 14px; }
.up-item .bar { height: 4px; border-radius: 2px; background: var(--ink-3); overflow: hidden; }
.up-item .bar i { display: block; height: 100%; background: var(--amber); }
.up-item.done .bar i { background: var(--ok); }
.up-item.error { color: var(--live); }
.toast { position: fixed; left: 50%; bottom: calc(86px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%); z-index: 30; background: var(--cream); color: var(--ink); padding: 10px 16px; border-radius: 99px; font-weight: 600; font-size: 14px; max-width: calc(100% - 32px); }

/* compu / tablet: todo a la vista */
@media (min-width: 980px) {
  .nav { display: none; }
  .main { grid-template-columns: 340px 1fr; }
  .main.leader { grid-template-columns: 300px 340px 1fr; }
  .panel { display: flex !important; border-right: 1px solid var(--line); }
  .panel[hidden] { display: none !important; }
  .reader { border-right: 0; }
  .overlay { align-items: center; }
  .sheet-card { border-radius: 16px; }
  .toast { bottom: 24px; }
}
@media (max-width: 979px) {
  .main > .panel { display: none; }
  .main > .panel.show { display: flex; }
}