:root {
  --fondo: #0d0f13; --panel: #161a21; --panel2: #1d222b; --borde: #2a303b; --texto: #e8ebf0; --suave: #8b93a3;
  --vivo: #e5484d; --sig: #3e8bff; --ok: #30a46c; --aviso: #f5a524;
  font: 14px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--fondo); color: var(--texto); }
.oculto { display: none !important; }
button, .btn { font: inherit; border: 0; border-radius: 8px; padding: 9px 14px; background: var(--sig); color: #fff; cursor: pointer; font-weight: 600; white-space: nowrap; }
button.sec, .btn.sec { background: var(--panel2); color: var(--texto); border: 1px solid var(--borde); }
button.chico { padding: 6px 10px; font-size: 13px; }
button:hover { filter: brightness(1.12); }
button:disabled { opacity: .45; cursor: default; }
input, select, textarea { font: inherit; background: var(--panel2); color: var(--texto); border: 1px solid var(--borde); border-radius: 8px; padding: 9px 11px; width: 100%; }
.btn input { display: none; }

/* acceso */
.login { display: grid; place-items: center; height: 100%; }
.login form { width: min(340px, 92vw); display: grid; gap: 12px; background: var(--panel); padding: 28px; border-radius: 14px; border: 1px solid var(--borde); }
.login h1, .marca { margin: 0; font-size: 20px; font-weight: 800; }
.login h1 span, .marca span { color: var(--vivo); }
.err { color: var(--vivo); min-height: 1em; margin: 0; }

/* estructura */
#app { display: grid; grid-template-rows: auto 1fr; height: 100%; }
header { display: flex; align-items: center; gap: 10px; padding: 10px 16px; border-bottom: 1px solid var(--borde); background: var(--panel); flex-wrap: wrap; }
header select { width: auto; min-width: 220px; }
.url { display: flex; align-items: center; gap: 8px; margin-left: auto; color: var(--suave); font-size: 13px; }
.url code { background: var(--fondo); padding: 6px 9px; border-radius: 6px; color: var(--texto); user-select: all; }
main { display: grid; grid-template-columns: 340px 1fr 420px; min-height: 0; }
.col { min-height: 0; overflow: auto; padding: 14px; border-right: 1px solid var(--borde); }
.col:last-child { border-right: 0; }
.titcol { font-weight: 700; margin: 2px 0 10px; display: flex; gap: 8px; align-items: baseline; }
.titcol small { color: var(--suave); font-weight: 400; }
.titcol.sm { margin-top: 18px; }
.nota { color: var(--suave); font-size: 12px; }

/* lista de presentaciones */
#listaPres { list-style: none; margin: 0 0 12px; padding: 0; display: grid; gap: 8px; counter-reset: n; }
#listaPres li { counter-increment: n; background: var(--panel); border: 1px solid var(--borde); border-radius: 10px; padding: 10px 10px 10px 40px; position: relative; cursor: pointer; }
#listaPres li::before { content: counter(n); position: absolute; left: 10px; top: 10px; width: 22px; height: 22px; border-radius: 6px; background: var(--panel2); display: grid; place-items: center; font-weight: 700; font-size: 12px; color: var(--suave); }
#listaPres li.sel { border-color: var(--sig); background: #18233a; }
#listaPres li.alaire { box-shadow: inset 4px 0 0 var(--vivo); }
#listaPres li.alaire::before { background: var(--vivo); color: #fff; }
#listaPres li.arrastrando { opacity: .4; }
#listaPres li.sobre { outline: 2px dashed var(--sig); }
.pt { font-weight: 700; word-break: break-word; }
.pp { color: var(--suave); font-size: 13px; }
.est { display: inline-block; font-size: 11px; font-weight: 700; padding: 2px 7px; border-radius: 99px; margin-top: 5px; background: var(--panel2); color: var(--suave); }
.est.lista { color: var(--ok); }
.est.error { color: var(--vivo); }
.est.convertir, .est.convirtiendo, .est.subiendo { color: var(--aviso); }
.barra { height: 4px; background: var(--panel2); border-radius: 4px; margin-top: 6px; overflow: hidden; }
.barra i { display: block; height: 100%; background: var(--aviso); width: 0; transition: width .3s; }
.mini-acc { position: absolute; right: 8px; top: 8px; display: none; gap: 4px; }
#listaPres li:hover .mini-acc { display: flex; }
.mini-acc button { padding: 3px 7px; font-size: 12px; }
.zona { border: 2px dashed var(--borde); border-radius: 12px; padding: 16px; text-align: center; color: var(--suave); }
.zona.encima { border-color: var(--sig); background: #18233a; color: var(--texto); }
.zona .acciones { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin: 10px 0 4px; }

/* rejilla de diapositivas */
.rejilla { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 12px; }
.d { position: relative; aspect-ratio: 16/9; background: #000; border-radius: 8px; overflow: hidden; border: 2px solid transparent; cursor: pointer; }
.d img, .d video { width: 100%; height: 100%; object-fit: contain; display: block; }
.d .num { position: absolute; left: 6px; top: 6px; background: #000b; padding: 1px 7px; border-radius: 5px; font-size: 12px; font-weight: 700; }
.d.alaire { border-color: var(--vivo); }
.d.alaire .num { background: var(--vivo); }
.d.siguiente { border-color: var(--sig); }
.d:hover { border-color: #fff6; }
.d .x { position: absolute; right: 6px; top: 6px; display: none; padding: 1px 7px; font-size: 12px; background: #000b; }
.d:hover .x { display: block; }
.vacioGrande { color: var(--suave); padding: 40px 0; text-align: center; grid-column: 1/-1; }
.web { display: grid; gap: 10px; }
.web .ctrlWeb { display: flex; gap: 8px; align-items: center; }

/* monitor */
.pantalla { aspect-ratio: 16/9; background: #000; border-radius: 10px; overflow: hidden; position: relative; border: 3px solid var(--panel2); }
.pantalla.vivo { border-color: var(--vivo); }
.pantalla img, .pantalla video, .pantalla iframe { width: 100%; height: 100%; object-fit: contain; border: 0; display: block; }
.pantalla iframe { pointer-events: none; }
.pantalla .vacio { position: absolute; inset: 0; display: grid; place-items: center; color: var(--suave); font-weight: 600; }
.pantalla.transp { background: repeating-conic-gradient(#222 0 25%, #333 0 50%) 0 0/24px 24px; }
.infoVivo { color: var(--suave); font-size: 13px; margin: 6px 0 10px; min-height: 1.4em; }
.ctrl { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 8px; }
.ctrl.tres { grid-template-columns: 1fr 1fr 1fr; }
button.grande { padding: 16px; font-size: 16px; background: var(--panel2); border: 1px solid var(--borde); }
button.grande.prim { background: var(--sig); border: 0; }
button.modo { background: var(--panel2); border: 1px solid var(--borde); }
button.modo.on { background: var(--vivo); border-color: var(--vivo); }

dialog { background: var(--panel); color: var(--texto); border: 1px solid var(--borde); border-radius: 14px; width: min(520px, 94vw); }
dialog::backdrop { background: #000a; }
dialog h3 { margin-top: 0; }
#dlgCuerpo { display: grid; gap: 10px; }
#dlgCuerpo label { display: grid; gap: 4px; color: var(--suave); font-size: 13px; }
dialog menu { display: flex; justify-content: flex-end; gap: 8px; padding: 0; margin: 16px 0 0; }
#toast { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); background: var(--panel2); border: 1px solid var(--borde); padding: 10px 16px; border-radius: 10px; opacity: 0; transition: opacity .2s; pointer-events: none; }
#toast.on { opacity: 1; }

@media (max-width: 1100px) {
  main { grid-template-columns: 1fr; }
  .col { border-right: 0; border-bottom: 1px solid var(--borde); overflow: visible; }
  #app { height: auto; }
  .monitor { order: -1; }
}
.d .tv { position: absolute; left: 6px; bottom: 6px; background: var(--vivo); padding: 1px 7px; border-radius: 5px; font-size: 11px; font-weight: 700; }
[data-video].on { background: var(--sig); border-color: var(--sig); }
.menu { position: fixed; z-index: 50; min-width: 300px; background: var(--panel); border: 1px solid var(--borde); border-radius: 10px; padding: 6px; display: grid; gap: 2px; box-shadow: 0 10px 30px #000a; }
.menu button { background: transparent; text-align: left; font-weight: 500; padding: 9px 10px; }
.menu button:hover { background: var(--panel2); }
.menu .nota { margin: 6px 8px; }
#monVivo { cursor: context-menu; }
.ph { position: absolute; display: grid; place-items: center; background: #000c; color: #fff; font-size: 12px; font-weight: 700; border: 1px dashed #fff6; }
.d.arrastrando { opacity: .35; }
.d[draggable=true] { cursor: grab; }

.precarga { display: flex; gap: 8px; align-items: center; margin: 0 0 10px; flex-wrap: wrap; }
.precarga .nota { margin: 0; }