/* ---------- Cabecera ---------- */
.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding: 12px 20px;
  background: linear-gradient(135deg, var(--ink) 0%, #26378f 100%);
  color: #fff;
  box-shadow: 0 2px 14px rgba(20, 24, 58, 0.25);
}

.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-icon { display: block; flex: none; border-radius: 10px; }
.brand-text { display: flex; flex-direction: column; min-width: 0; }
.brand h1 {
  font: 32px/1 var(--f-marker);
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.brand-version {
  margin-top: 2px;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: #c3ccf5;
}

.topbar-file { display: flex; flex-wrap: wrap; gap: 8px; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  padding: 8px 14px;
  border: 1.5px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--ink);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s;
}
.btn:hover { background: #f1f4ff; border-color: var(--ink-mute); }

.btn-ghost {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.2); border-color: #fff; }

.btn[aria-disabled="true"] {
  cursor: not-allowed;
  border-style: dashed;
  color: var(--text-soft);
  background: #f4f5f9;
}
.btn[aria-disabled="true"]:hover { background: #f4f5f9; border-color: var(--line-strong); }
.btn-ghost[aria-disabled="true"] {
  color: #dbe1ff;
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.35);
}
.btn-ghost[aria-disabled="true"]:hover { background: rgba(255, 255, 255, 0.06); border-color: rgba(255, 255, 255, 0.55); }

.btn-icon { min-width: 44px; padding: 8px; font-size: 1.2rem; line-height: 1; }

/* ---------- Estructura ---------- */
.aviso-carga {
  margin: 16px 20px 0;
  padding: 12px 16px;
  border: 1.5px solid var(--danger);
  border-radius: var(--radius-sm);
  background: #fdecea;
  color: #5f1410;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding: 20px 20px calc(32px + env(safe-area-inset-bottom));
}
.col { display: flex; flex-direction: column; gap: 20px; min-width: 0; }
/* Solo agrupa columnas de edición para el layout; en pantallas estrechas no participa. */
.edicion { display: contents; }

.panel {
  min-width: 0;
  padding: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.panel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 4px 12px;
  margin-bottom: 14px;
}
.panel h2 {
  font: 24px/1.1 var(--f-marker);
  letter-spacing: 0.4px;
  color: var(--ink);
}
.panel h3 {
  margin: 18px 0 8px;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-soft);
}
.hint { font-size: 0.85rem; color: var(--text-soft); }
.note {
  margin-top: 12px;
  padding: 8px 12px;
  border-left: 4px solid #a6cbe9;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: #eaf4fe;
  font-size: 0.85rem;
  color: var(--text);
}

/* ---------- Formularios ---------- */
.field { display: flex; flex-direction: column; gap: 4px; margin-bottom: 12px; min-width: 0; }
.field > label, .field > .label { font-size: 0.85rem; font-weight: 600; color: var(--text); }
.field input[type="text"], .field select {
  width: 100%;
  min-height: 44px;
  padding: 8px 12px;
  border: 1.5px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: #fff;
}
.field input[type="text"]:hover, .field select:hover { border-color: var(--ink-mute); }
.field input[aria-invalid="true"] { border-color: var(--danger); background: #fff8f7; }
.field .mono { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; letter-spacing: 0.05em; }
.error { min-height: 1.2em; font-size: 0.85rem; color: var(--danger); }

.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
fieldset:disabled .field input, fieldset:disabled .field select { background: #f4f5f9; color: var(--text-soft); }

/* ---------- Selectores en fila (compases, acordes, voicings) ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 12px; padding: 0; list-style: none; }
.chip {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 6px 14px;
  border: 1.5px solid var(--line-strong);
  border-radius: 999px;
  background: #fff;
  font-weight: 600;
  cursor: pointer;
}
.chip:hover { border-color: var(--ink-mute); }
.chip[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: #fff; }

/* ---------- Acordes y posiciones (editor) ---------- */
.acordes-grupos { display: flex; flex-direction: column; gap: 12px; margin: 0 0 14px; }
.acorde-grupo { border: 1.5px solid var(--line-strong); border-radius: var(--radius-sm); background: #fff; padding: 8px; min-width: 0; }
.acorde-grupo.activo { border-color: var(--ink); box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.25); background: #f7f9ff; }
.acorde-cab {
  display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 4px 12px;
  width: 100%; min-height: 44px; padding: 6px 10px; border: 0; border-radius: 6px;
  background: transparent; font: inherit; font-weight: 700; text-align: left; cursor: pointer;
}
.acorde-cab:hover { background: rgba(27, 42, 120, 0.06); }
.acorde-cab[aria-pressed="true"] { background: var(--ink); color: #fff; }
.acorde-titulo { overflow-wrap: anywhere; }
.acorde-cuenta { font-size: 0.85rem; font-weight: 600; opacity: 0.85; }
.posiciones { display: flex; flex-direction: column; gap: 6px; margin: 8px 0 0 12px; padding-left: 10px; border-left: 3px solid var(--line-strong); }
.posicion {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 2px 10px;
  min-height: 44px; padding: 6px 12px; border: 1.5px solid var(--line-strong); border-radius: 8px;
  background: #fff; font: inherit; text-align: left; cursor: pointer;
}
.posicion:hover { border-color: var(--ink-mute); }
.posicion[aria-pressed="true"] { border-color: var(--ink); background: #e8eeff; box-shadow: inset 4px 0 0 var(--ink); }
.pos-num { font-weight: 700; }
.pos-digitacion { font-size: 0.9rem; letter-spacing: 0.04em; overflow-wrap: anywhere; }
.acorde-acciones { margin: 10px 0 0 12px; }
.acorde-acciones .hint { margin: 0 0 8px; }
.acorde-acciones .btn-row { margin-bottom: 4px; }

/* ---------- Lista de compases ---------- */
.measure-tools { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; margin-bottom: 14px; }
.measure-list { display: flex; flex-direction: column; gap: 8px; margin: 0; padding: 0; list-style: none; }
.measure-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  width: 100%;
  min-height: 56px;
  padding: 8px 10px;
  border: 1.5px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fff;
  text-align: left;
  cursor: pointer;
}
.measure-item:hover { border-color: var(--ink-mute); background: #f7f8fd; }
.measure-item[aria-current="true"] {
  border-color: var(--ink);
  background: #eef1ff;
  box-shadow: inset 4px 0 0 var(--ink);
}
.measure-num {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border: 2px solid var(--ink-deep);
  border-radius: 8px;
  font: 20px/1 var(--f-marker);
  color: var(--ink-deep);
  overflow: hidden;
}
.measure-sum { display: flex; flex-wrap: wrap; gap: 4px 6px; min-width: 0; }
.measure-empty { font-size: 0.85rem; color: var(--text-soft); }
.tag {
  padding: 2px 9px;
  border: 1.5px solid var(--fam-bd, #c3c9d6);
  border-radius: 999px;
  background: var(--fam-bg, #f1f2f6);
  font: 16px/1.2 var(--f-marker);
  color: var(--ink-deep);
}
.tag small { font: 0.72rem var(--f-ui); color: var(--text-soft); margin-left: 4px; }

/* ---------- Marcas ---------- */
.mark-list { display: flex; flex-direction: column; gap: 6px; margin: 0 0 4px; padding: 0; list-style: none; }
.mark-item {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fafbfe;
  font-size: 0.92rem;
}
.mark-kind { flex: none; min-width: 5.2em; font: 18px/1.1 var(--f-marker); color: var(--ink); }
.mark-item { flex-wrap: wrap; }
.mark-det { flex: 1 1 12em; min-width: 0; overflow-wrap: anywhere; }
.mark-acc { display: flex; gap: 6px; margin-left: auto; }
.mark-acc .btn { padding: 4px 10px; min-height: 36px; }
.mark-add { margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--line); }
.mark-add .btn-row .btn { flex: 1 1 auto; }
.passes { margin: 0 0 12px; padding: 0; border: 0; min-width: 0; }
.pass-row { display: flex; flex-wrap: wrap; gap: 6px 14px; }
.pass-box { display: inline-flex; align-items: center; gap: 4px; min-height: 36px; }
.form-errors { margin: 0 0 10px; }
.form-errors.on { padding: 8px 12px; border: 1px solid var(--danger); border-radius: var(--radius-sm); background: #fff8f7; color: var(--danger); }

/* ---------- Vista previa ---------- */
.panel-vista { display: flex; flex-direction: column; }
.zoom-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin-bottom: 12px; }
.zoom-bar input[type="range"] { flex: 1 1 140px; min-width: 120px; min-height: 44px; accent-color: var(--ink); }
.zoom-value { min-width: 3.4em; font-weight: 600; text-align: center; font-variant-numeric: tabular-nums; }

.viewport {
  height: min(78vh, 900px);
  min-height: 320px;
  overflow: auto;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #dfe3ee;
  overscroll-behavior: contain;
  /* Ancho útil constante con o sin barra: escalar la vista no puede activar bucles del ResizeObserver. */
  scrollbar-gutter: stable;
}
.viewport:focus-visible { outline-offset: -3px; }
.stage { position: relative; margin: 0 auto; }

/* Hojas de la vista previa: apiladas, escaladas con transform (zoom independiente de la paginación). */
.vista-hojas { position: absolute; left: 0; top: 0; display: flex; flex-direction: column; transform-origin: top left; }
.vista-hojas .hoja { flex: none; box-shadow: 0 2px 18px rgba(20, 24, 58, 0.22); }
/* Edición sobre la hoja (no forma parte de la exportación). */
.vista-hojas .compas { cursor: pointer; }
.vista-hojas .compas:hover { background: rgba(27, 42, 120, 0.03); }
.vista-hojas .compas.sel { background: rgba(166, 203, 233, 0.22); box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.35); border-radius: 0 6px 6px 0; }
.vista-hojas .compas.sel.en-rep { box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.35); }
/* Solo outline/sombra: no altera dimensiones ni el CSS compartido de las hojas. */
.vista-hojas .tarjeta { cursor: pointer; }
.vista-hojas .tarjeta.sel { outline: 3px solid rgba(47, 107, 255, 0.7); outline-offset: 2px; }
/* El título puede cruzar columnas de otras tarjetas: solo su recuadro responde al clic (selecciona su tarjeta), por encima de ellas. */
.vista-hojas .compas > .t-titulo { position: relative; z-index: 1; pointer-events: none; }
.vista-hojas .t-titulo-caja { cursor: pointer; pointer-events: auto; }

/* Marco oculto desde el que se imprime exactamente el HTML exportado. */
.print-frame { position: fixed; right: 0; bottom: 0; width: 1px; height: 1px; border: 0; opacity: 0; pointer-events: none; }

/* Ctrl+P sobre la aplicación no imprime el editor: se remite al botón que imprime solo las hojas. */
@media print {
  body > * { display: none !important; }
  body::before {
    content: "Para imprimir las hojas usa el botón «Imprimir / PDF» de la aplicación: así se imprimen solo las hojas, en A4 horizontal.";
    display: block;
    padding: 20px;
    font: 16px/1.4 var(--f-ui);
  }
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(20px + env(safe-area-inset-bottom));
  z-index: 40;
  max-width: min(92vw, 520px);
  transform: translateX(-50%);
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  background: var(--ink-deep);
  color: #fff;
  box-shadow: 0 6px 24px rgba(20, 24, 58, 0.35);
  font-size: 0.92rem;
}

/* ---------- Fase 1: estado de archivo, filas de botones, diálogos ---------- */
.file-state {
  flex: 1 1 200px;
  min-width: 0;
  font-size: 0.85rem;
  color: #dbe1ff;
  overflow-wrap: anywhere;
}
.file-state.dirty { color: #ffe9a8; font-weight: 600; }

.btn-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 14px; }
.btn-primary { background: var(--ink); border-color: var(--ink); color: #fff; }
.btn-primary:hover { background: #26378f; border-color: #26378f; }
.btn-danger { background: #fff; border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: #fdecea; border-color: var(--danger); }
.btn:disabled { cursor: not-allowed; color: var(--text-soft); background: #f4f5f9; border-style: dashed; }
.btn:disabled:hover { border-color: var(--line-strong); background: #f4f5f9; }

.field textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1.5px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: #fff;
  font: 0.9rem/1.4 ui-monospace, "Cascadia Mono", Consolas, monospace;
  resize: vertical;
}

.warn-box {
  margin-top: 12px;
  padding: 4px 12px 10px;
  border-left: 4px solid #e6cd92;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: #fdf6e2;
}

.warn-vista { margin: 0 0 12px; border-left-color: var(--danger); background: #fdecea; }
.warn-box[hidden] { display: none; }
.degrees { margin: 0 0 12px; }
.degrees legend { padding: 0; margin-bottom: 6px; font-size: 0.85rem; font-weight: 600; }
.degree-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 6px; }
.degree-cell { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.degree-cell label { font-size: 0.72rem; color: var(--text-soft); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.degree-cell input { width: 100%; min-width: 0; min-height: 44px; padding: 6px 4px; border: 1.5px solid var(--line-strong); border-radius: var(--radius-sm); text-align: center; }
.degrees .hint { display: block; margin-top: 6px; }

.dialog {
  width: min(92vw, 640px);
  max-height: 88vh;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--text);
  box-shadow: 0 12px 48px rgba(20, 24, 58, 0.4);
  overflow: auto;
}
.dialog::backdrop { background: rgba(20, 24, 58, 0.55); }
.dialog h2 { margin-bottom: 12px; font: 26px/1.1 var(--f-marker); color: var(--ink); }
.dialog-body > * + * { margin-top: 12px; }
.dialog-list { margin: 0; padding-left: 1.2em; }
.dialog-list li + li { margin-top: 4px; }
.dialog-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; margin-top: 18px; }
.import-example { margin: 0; padding: 8px 12px; border-radius: var(--radius-sm); background: #f4f5f9; font: 0.82rem/1.4 ui-monospace, Consolas, monospace; overflow-x: auto; }
.import-errors { color: var(--danger); }
.import-preview { max-height: 30vh; overflow: auto; }

/* ---------- Adaptación ---------- */
/* >= 761px: sin scroll exterior; la edición y la vista se desplazan por separado y la hoja queda siempre visible. */
@media (min-width: 761px) {
  body { display: flex; flex-direction: column; height: 100vh; height: 100dvh; overflow: hidden; }
  .topbar, .aviso-carga { flex: none; }
  .layout { flex: 1 1 0; min-height: 0; align-items: stretch; grid-template-rows: minmax(0, 1fr); padding-bottom: 20px; }
  .edicion { display: flex; flex-direction: column; gap: 20px; min-width: 0; min-height: 0; }
  .col-vista { min-height: 0; }
  .panel-vista { flex: 1 1 0; min-height: 0; }
  .viewport { flex: 1 1 0; height: auto; min-height: 160px; }
  .zoom-bar { flex: none; }
  .warn-vista { max-height: min(22vh, 130px); overflow-y: auto; flex: 0 1 auto; }
  .edicion, .col-lista, .col-editor { overscroll-behavior: contain; }
}

/* 761–1180px: edición en una columna con scroll compartido, vista a la derecha. */
@media (min-width: 761px) and (max-width: 1180px) {
  .layout { grid-template-columns: minmax(300px, 360px) minmax(0, 1fr); }
  .edicion { display: block; overflow-y: auto; padding: 4px 6px 24px 4px; margin: -4px -6px 0 -4px; }
  .edicion > .col + .col { margin-top: 20px; }
}

/* >= 1181px: columnas de edición con scroll propio y vista a toda la altura. */
@media (min-width: 1181px) {
  .layout { grid-template-columns: auto minmax(0, 1fr); }
  .edicion { display: grid; grid-template-columns: 300px minmax(340px, 420px); grid-template-rows: minmax(0, 1fr); gap: 20px; }
  .col-lista, .col-editor { min-height: 0; overflow-y: auto; padding: 4px 6px 24px 4px; margin: -4px -6px 0 -4px; }
}

@media (max-width: 760px) {
  .topbar { padding: 12px 14px; }
  .brand h1 { font-size: 28px; }
  .topbar-file { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); width: 100%; }
  .topbar-file .btn { padding-inline: 8px; }
  .topbar-file .file-state { grid-column: 1 / -1; max-width: none; }
  .layout { grid-template-columns: minmax(0, 1fr); gap: 16px; padding: 14px 12px calc(40px + env(safe-area-inset-bottom)); }
  .col { gap: 16px; }
  .panel { padding: 14px; }
  .viewport { height: 70vh; padding: 10px; }
  .field-row { grid-template-columns: minmax(0, 1fr); }
  .acorde-grupo { padding: 6px; }
  .posiciones, .acorde-acciones { margin-left: 4px; }
  .acorde-acciones .btn-row .btn { flex: 1 1 100%; }
}

/* Botón por línea de la vista previa: vive en el margen derecho de la hoja y no existe en el HTML exportado ni en la impresión. */
.vista-hojas .fila-ajuste { position: absolute; left: 100%; top: 2px; margin-left: 1px; width: 16px; height: 24px; padding: 0; border: 1px solid rgba(47, 107, 255, 0.35); border-radius: 4px; background: #fff; color: #2f6bff; font: 12px/1 sans-serif; cursor: pointer; opacity: .35; }
.vista-hojas .fila-caja:hover .fila-ajuste, .vista-hojas .fila-ajuste:focus-visible, .vista-hojas .fila-ajuste.activo { opacity: 1; }
.vista-hojas .fila-ajuste.activo { background: #2f6bff; color: #fff; }

a.btn { text-decoration: none; }