:root {
  --fondo: #0e0b16;
  --panel: #17131f;
  --panel2: #1f1a2a;
  --borde: #2d2640;
  --texto: #eeeaf6;
  --suave: #a69dbb;
  --tenue: #6f6784;
  --rosa: #ff5fa2;
  --violeta: #7c5cff;
  --turquesa: #3dd6c6;
  --ambar: #fbbf24;
  --verde: #34d399;
  --grad: linear-gradient(135deg, var(--rosa), var(--violeta));
  --radio: 14px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: radial-gradient(1200px 500px at 15% -10%, #2a1740 0%, transparent 60%), radial-gradient(900px 400px at 100% 0%, #13233a 0%, transparent 55%), var(--fondo);
  background-color: var(--fondo);
  color: var(--texto);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, sans-serif;
  min-height: 100vh;
}
a { color: var(--rosa); }
code, kbd { font: 0.86em ui-monospace, "Cascadia Mono", Consolas, monospace; background: var(--panel2); padding: 1px 5px; border-radius: 5px; color: #ffd0e4; }
.oculto { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
button { font: inherit; }
button:disabled { opacity: .45; cursor: default; }
:focus-visible { outline: 2px solid var(--violeta); outline-offset: 2px; }

/* Cabecera y pestañas */
.cab { max-width: 1320px; margin: 0 auto; padding: 26px 16px 8px; }
.marca { display: flex; align-items: center; gap: 14px; }
.logo { width: 50px; height: 50px; flex: none; filter: drop-shadow(0 6px 18px rgba(255, 95, 162, .35)); }
.marca h1 { margin: 0; font-size: 2.3rem; letter-spacing: -0.03em; line-height: 1; }
.lema { margin: 6px 0 0; color: var(--suave); max-width: 80ch; }
.lema b { color: var(--texto); }
.pestanas { display: flex; gap: 6px; margin-top: 18px; border-bottom: 1px solid var(--borde); overflow-x: auto; }
.pestana { background: none; border: 0; color: var(--suave); padding: 10px 14px; cursor: pointer; border-bottom: 2px solid transparent; font-weight: 600; white-space: nowrap; }
.pestana.activa { color: var(--texto); border-bottom-color: var(--rosa); }
.pestana:hover:not(:disabled) { color: var(--texto); }

main { max-width: 1320px; margin: 0 auto; padding: 16px 16px 24px; }
.vista { display: none; }
.vista.activa { display: block; }
.panel { background: var(--panel); border: 1px solid var(--borde); border-radius: var(--radio); padding: 18px; min-width: 0; }
.panel h2 { margin: 0 0 10px; font-size: 1.1rem; }
.panel-cab { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.nota { font-size: .8rem; color: var(--tenue); }
.estado { color: var(--suave); min-height: 1.5em; font-size: .92rem; }
.estado.error { color: #ff8a8a; }

/* Crear */
.rejilla { display: grid; gap: 18px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 980px) { .rejilla { grid-template-columns: minmax(0, 1fr) 470px; align-items: start; } }
textarea {
  width: 100%; resize: vertical; min-height: 340px; background: #120f1a; color: var(--texto);
  border: 1px solid var(--borde); border-radius: 10px; padding: 12px 14px; font: 15px/1.6 ui-monospace, "Cascadia Mono", Consolas, monospace;
}
.ayuda { color: var(--suave); font-size: .86rem; margin: 8px 0 0; }
.enlace { background: none; border: 0; color: var(--rosa); cursor: pointer; font-size: .9rem; padding: 4px 0; }
.enlace:hover { text-decoration: underline; }
.opciones { display: grid; gap: 14px; }
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
legend { font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; color: var(--tenue); margin-bottom: 6px; padding: 0; }
legend .nota { text-transform: none; letter-spacing: 0; }
.seg { display: flex; flex-wrap: wrap; gap: 6px; }
.seg legend { width: 100%; }
.seg label { flex: 1 1 0; min-width: 0; }
.seg input, .voz-tarjeta input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: block; text-align: center; padding: 9px 8px; border-radius: 10px; border: 1px solid var(--borde); background: var(--panel2); cursor: pointer; font-weight: 600; }
.seg input:checked + span { border-color: transparent; background: var(--grad); color: #fff; }
.seg input:focus-visible + span, .voz-tarjeta input:focus-visible + .voz-cuerpo { outline: 2px solid var(--violeta); outline-offset: 2px; }
.voces-rejilla { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.voz-tarjeta { position: relative; display: flex; align-items: stretch; border: 1px solid var(--borde); border-radius: 12px; background: var(--panel2); cursor: pointer; overflow: hidden; }
.voz-tarjeta:has(input:checked) { border-color: var(--rosa); box-shadow: 0 0 0 1px var(--rosa) inset; background: #2a1a2e; }
.voz-cuerpo { flex: 1; min-width: 0; padding: 9px 10px; display: grid; line-height: 1.25; }
.voz-cuerpo b { font-size: 1rem; }
.voz-cuerpo small { color: var(--suave); }
.voz-cuerpo em { font-style: normal; font-size: .72rem; color: var(--turquesa); margin-top: 2px; }
.voz-tarjeta.formulas .voz-cuerpo em { color: var(--ambar); }
.escuchar { flex: none; width: 46px; border: 0; border-left: 1px solid var(--borde); background: rgba(255, 255, 255, .03); color: var(--texto); cursor: pointer; font-size: 1rem; }
.escuchar:hover { background: rgba(255, 95, 162, .18); }
.escuchar.cargando { color: var(--tenue); }
.mas { border: 1px solid var(--borde); border-radius: 10px; background: #14111c; }
.mas summary { cursor: pointer; padding: 10px 12px; color: var(--suave); font-size: .92rem; }
.campos { display: grid; gap: 12px; padding: 4px 12px 14px; }
.campos label { display: grid; gap: 4px; font-size: .88rem; color: var(--suave); }
.campos label.check { display: flex; align-items: center; gap: 8px; color: var(--texto); }
.campos output { color: var(--texto); font-weight: 600; }
select, input[type=number] { background: var(--panel2); color: var(--texto); border: 1px solid var(--borde); border-radius: 8px; padding: 8px 10px; font: inherit; width: 100%; min-width: 0; }
input[type=range] { width: 100%; accent-color: var(--rosa); }
input[type=checkbox] { accent-color: var(--rosa); width: 18px; height: 18px; }
.acciones { display: flex; gap: 10px; flex-wrap: wrap; }
.primario, .secundario { border-radius: 12px; padding: 12px 18px; font-weight: 700; cursor: pointer; border: 0; }
.primario { background: var(--grad); color: #fff; flex: 1 1 200px; box-shadow: 0 8px 24px rgba(124, 92, 255, .28); }
.primario:hover { filter: brightness(1.08); }
.secundario { background: var(--panel2); color: var(--texto); border: 1px solid var(--borde); }
.secundario:hover:not(:disabled) { border-color: var(--violeta); }
.mini { display: inline-block; background: var(--panel2); color: var(--texto); border: 1px solid var(--borde); border-radius: 9px; padding: 6px 11px; font-size: .86rem; cursor: pointer; text-decoration: none; }
.mini:hover:not(:disabled) { border-color: var(--rosa); }
.mini.resalta { border-color: var(--verde); color: #c9f7e4; }

/* Canción: transporte */
.transporte { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.play { width: 58px; height: 58px; border-radius: 50%; border: 0; background: var(--grad); color: #fff; cursor: pointer; display: grid; place-items: center; box-shadow: 0 8px 22px rgba(255, 95, 162, .3); flex: none; }
.play svg { width: 26px; height: 26px; fill: currentColor; }
.play .i-pausa, .play.sonando .i-play { display: none; }
.play.sonando .i-pausa { display: block; }
.transporte-centro { flex: 1 1 320px; min-width: 0; }
.titulo-cancion { font-weight: 700; font-size: 1.1rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.linea-tiempo { display: flex; align-items: center; gap: 10px; font-variant-numeric: tabular-nums; color: var(--suave); font-size: .9rem; }
.linea-tiempo input { flex: 1; }
.barra { height: 3px; background: var(--panel2); border-radius: 3px; overflow: hidden; margin-top: 4px; }
.barra div { height: 100%; width: 0; background: var(--grad); transition: width .2s; }
.transporte-acciones { display: flex; gap: 8px; flex-wrap: wrap; }

.verificacion { margin-top: 14px; border-radius: 12px; padding: 14px 16px; border: 1px solid var(--borde); background: var(--panel); }
.verificacion.ok { border-color: rgba(52, 211, 153, .6); background: linear-gradient(180deg, rgba(52, 211, 153, .1), var(--panel)); }
.verificacion.distinta { border-color: rgba(251, 191, 36, .6); }
.verificacion h3 { margin: 0 0 6px; }
.verificacion p { margin: 6px 0; }

.karaoke { margin: 14px 0; min-height: 88px; padding: 12px 16px; border-radius: 12px; background: linear-gradient(180deg, #1c1626, #15111d); border: 1px solid var(--borde); }
.karaoke p { margin: 0; }
.k-vacio { color: var(--tenue); }
.k-parte { font-size: .74rem; text-transform: uppercase; letter-spacing: .1em; color: var(--tenue); margin-bottom: 4px !important; }
.k-linea { font-size: 1.45rem; font-weight: 700; line-height: 1.35; color: #5d5470; overflow-wrap: anywhere; }
.k-linea .s.cantada { color: var(--texto); }
.k-linea .s.actual { color: var(--rosa); }
.k-sig { font-size: 1rem; color: #5d5470; margin-top: 4px !important; overflow-wrap: anywhere; }

/* Estudio */
.estudio-cab { display: flex; gap: 14px; align-items: baseline; flex-wrap: wrap; margin-bottom: 10px; }
.estudio-cab h2 { margin: 0; }
.estudio-cab .nota { margin: 0; font-size: .86rem; color: var(--suave); }
.estudio-cuerpo { display: grid; grid-template-columns: 196px minmax(0, 1fr); border: 1px solid var(--borde); border-radius: 12px; overflow: hidden; background: #110e18; }
.cabeceras { border-right: 1px solid var(--borde); background: #15111d; }
.cab-arriba { display: grid; grid-template-rows: 26px 1fr; padding: 4px 10px; font-size: .72rem; color: var(--tenue); text-transform: uppercase; letter-spacing: .08em; align-items: center; }
.cab-pista { border-top: 1px solid rgba(255, 255, 255, .06); padding: 4px 8px; display: grid; align-content: center; gap: 3px; overflow: hidden; }
.cab-pista.muda { opacity: .55; }
.cab-fila { display: flex; gap: 5px; align-items: center; min-width: 0; }
.cab-fila b { flex: 1; min-width: 0; font-size: .82rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cab-fila select { padding: 2px 4px; font-size: .74rem; border-radius: 6px; flex: 1; }
.cab-fila input[type=range] { width: 58px; flex: none; }
.ms { width: 22px; height: 20px; padding: 0; border-radius: 5px; border: 1px solid var(--borde); background: var(--panel2); color: var(--suave); font-size: .68rem; font-weight: 700; cursor: pointer; flex: none; }
.ms.on[data-acc=mute] { background: #ef4444; color: #fff; border-color: transparent; }
.ms.on[data-acc=solo] { background: var(--ambar); color: #1a1205; border-color: transparent; }
.lienzo-caja { overflow-x: auto; overflow-y: hidden; scrollbar-color: var(--borde) transparent; }
.lienzo { position: relative; }
.lienzo canvas { display: block; }
.cabezal { position: absolute; top: 0; bottom: 0; width: 2px; background: #fff; box-shadow: 0 0 10px rgba(255, 255, 255, .7); pointer-events: none; }
@media (max-width: 640px) {
  .estudio-cuerpo { grid-template-columns: 128px minmax(0, 1fr); }
  .cab-fila input[type=range] { display: none; }
}

.porque-nota { margin-top: 12px; border: 1px solid rgba(124, 92, 255, .55); background: linear-gradient(180deg, rgba(124, 92, 255, .12), var(--panel)); border-radius: 12px; padding: 12px 16px; }
.pn-cab { display: flex; justify-content: space-between; gap: 10px; align-items: baseline; }
.pn-cab h3 { margin: 0; font-size: 1.05rem; }
.porque-nota p { margin: 8px 0; color: #ddd7ea; }
.como-suena { font-size: .9rem; color: var(--suave) !important; }
.codigo-botones { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.codigo-botones .mini { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: .78rem; }
.burbuja { position: fixed; z-index: 20; max-width: 270px; background: #241d33; border: 1px solid var(--borde); border-radius: 10px; padding: 7px 10px; font-size: .84rem; pointer-events: none; box-shadow: 0 10px 30px rgba(0, 0, 0, .5); display: grid; gap: 2px; }
.burbuja span { color: var(--tenue); font-size: .76rem; }

/* Visor de código */
.visor { width: min(980px, 96vw); height: min(80vh, 760px); padding: 0; border: 1px solid var(--borde); border-radius: 14px; background: #0f0c16; color: var(--texto); }
.visor[open] { display: grid; grid-template-rows: auto 1fr; }
.visor::backdrop { background: rgba(5, 3, 10, .7); }
.visor-cab { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--borde); flex-wrap: wrap; }
.codigo { overflow: auto; font: 13px/1.5 ui-monospace, "Cascadia Mono", Consolas, monospace; padding: 8px 0; }
.codigo .ln { display: flex; white-space: pre; }
.codigo .num { flex: none; width: 52px; text-align: right; padding-right: 12px; color: #4f4766; user-select: none; }
.codigo .txt { color: #cfc8e0; padding-right: 16px; }
.codigo .marca { background: rgba(124, 92, 255, .16); }
.codigo .marca .num { color: var(--rosa); }
.cargando { padding: 12px 16px; color: var(--tenue); }

.fichas { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0; }
.ficha { background: var(--panel2); border: 1px solid var(--borde); border-radius: 999px; padding: 5px 12px; font-size: .86rem; color: var(--suave); }
.ficha b { color: var(--texto); font-weight: 600; }

/* Análisis */
.analisis { margin-top: 4px; }
.intro-analisis { color: var(--suave); margin: 0 0 12px; max-width: 80ch; }
.porque { margin: 0 0 18px; padding-left: 20px; }
.porque li { margin: 3px 0; }
.porque li::marker { color: var(--rosa); }
#secciones { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr)); }
.sec { background: #14111c; border: 1px solid var(--borde); border-radius: 12px; padding: 12px 14px; border-left: 4px solid var(--turquesa); }
.sec.estribillo { border-left-color: var(--rosa); }
.sec.puente { border-left-color: var(--ambar); }
.sec h3 { margin: 0; font-size: 1rem; }
.sec .acs { color: var(--suave); font-size: .82rem; margin: 2px 0 8px; }
.verso { display: flex; gap: 10px; align-items: baseline; padding: 3px 0; border-top: 1px dashed #2a2338; }
.verso:first-of-type { border-top: 0; }
.verso .sils { flex: 1; min-width: 0; overflow-wrap: anywhere; color: var(--suave); }
.verso .sils b { color: var(--texto); font-weight: 700; text-decoration: underline; text-decoration-color: var(--rosa); text-underline-offset: 3px; }
.verso .sils i { font-style: normal; color: var(--tenue); padding: 0 1px; }
.verso .met { flex: none; font-size: .78rem; color: var(--tenue); font-variant-numeric: tabular-nums; text-align: right; }
.verso .met .rima { display: inline-block; min-width: 1.4em; text-align: center; color: var(--texto); font-weight: 700; }
.sin { color: var(--rosa); }

/* Cómo funciona */
.como { max-width: 900px; }
.como h3 { margin: 22px 0 6px; }
.pasos { padding-left: 22px; }
.pasos li { margin: 0 0 14px; }
.pasos li::marker { color: var(--rosa); font-weight: 700; }
.creditos li { margin: 6px 0; color: #ddd7ea; }

.pie { max-width: 1320px; margin: 0 auto; padding: 8px 16px 40px; color: var(--tenue); font-size: .86rem; }
.pie p { margin: 4px 0; }

@media (max-width: 560px) {
  .marca h1 { font-size: 1.9rem; }
  .logo { width: 42px; height: 42px; }
  .k-linea { font-size: 1.2rem; }
  .voces-rejilla { grid-template-columns: minmax(0, 1fr); }
  .transporte-acciones { width: 100%; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }