/* Aula: puerta de entrada, temario, video de Drive y comentarios */
[hidden] { display: none !important; }
label { display: block; font-weight: 800; font-size: .92rem; margin-bottom: 6px; }
input, textarea {
  width: 100%; font: 500 1rem/1.4 var(--sans); color: var(--crema); background: var(--noche);
  border: 1.5px solid #4a4553; border-radius: 3px; padding: 13px 12px;
}
input:focus, textarea:focus { outline: none; border-color: var(--menta); box-shadow: 0 0 0 3px rgba(111,214,200,.18); }
textarea { resize: vertical; }
.error { color: var(--rosa-luz); font-weight: 600; border-left: 3px solid var(--rosa); padding: 2px 0 2px 10px; }

.puerta { max-width: 470px; margin: 0 auto; padding: clamp(40px, 9vw, 90px) 16px 0; text-align: center; }
.puerta-logo { height: 96px; width: auto; margin: 0 auto 18px; }
.puerta h1 { font-size: clamp(2.2rem, 8vw, 3.2rem); }
.puerta .entrada { margin-left: auto; margin-right: auto; }
.form-clave { margin-top: 28px; text-align: left; display: grid; gap: 12px; }
.form-clave input { font-family: ui-monospace, Consolas, monospace; letter-spacing: .04em; text-transform: uppercase; }
.form-clave .boton { width: 100%; }
.puerta-pie { margin-top: 26px; font: italic .98rem/1.6 var(--nota); color: var(--tenue); }

.aula { max-width: var(--ancho); margin: 0 auto; padding: 26px 16px 0; display: grid; gap: 28px; }
.temario h2 { font-size: 1.2rem; max-width: none; }
.temario ol { list-style: none; margin: 14px 0 0; padding: 0; display: grid; gap: 6px; counter-reset: c; }
.temario button {
  counter-increment: c; width: 100%; text-align: left; font: 600 .95rem/1.3 var(--sans); color: var(--crema);
  background: #1e1b25; border: 1.5px solid #4a4553; border-radius: 2px; padding: 12px 68px 12px 12px; cursor: pointer; position: relative;
}
.temario button::before { content: counter(c) ". "; color: var(--tenue); }
.temario button:hover { border-color: var(--tenue); }
.temario button[aria-current="true"] { border-color: var(--menta); background: #1b2a30; color: var(--menta); }
.temario button.cerrada { color: var(--tenue); cursor: default; }
.temario button.cerrada::after, .temario button.pronto::after {
  position: absolute; right: 10px; top: 50%; transform: translateY(-50%); font: italic .78rem var(--nota); color: var(--tenue);
}
.temario button.cerrada::after { content: "candado"; }
.temario button.pronto::after { content: "pronto"; }
.subir-plan { margin-top: 14px; font: italic .92rem/1.5 var(--nota); color: var(--tenue); }

.pantalla {
  position: relative; aspect-ratio: 16 / 9; background: var(--noche); border: 3px solid #37323f; border-radius: 10px; overflow: hidden;
  box-shadow: 0 24px 50px rgba(0,0,0,.5);
}
.pantalla iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.pantalla .vacia { position: absolute; inset: 0; display: grid; place-content: center; text-align: center; padding: 20px; gap: 8px; }
.pantalla .vacia strong { font-size: 1.3rem; }
.pantalla .vacia span { font: italic 1rem var(--nota); color: var(--tenue); }
.sala h1 { font-size: clamp(1.5rem, 4.6vw, 2.2rem); margin-top: 22px; }

.comentarios { margin-top: 44px; border-top: 1px solid var(--linea); padding-top: 28px; }
.comentarios h2 { font-size: 1.3rem; max-width: none; }
.form-com { margin-top: 18px; display: grid; gap: 8px; max-width: 640px; }
.form-com label { margin: 8px 0 0; }
.form-com-pie { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin-top: 8px; }
.lista-com { list-style: none; margin: 28px 0 0; padding: 0; display: grid; gap: 0; max-width: 720px; }
.lista-com li { border-top: 1px solid var(--linea); padding: 16px 0; }
.lista-com .quien { font-weight: 800; }
.lista-com .quien em { font: italic .85rem var(--nota); color: var(--tenue); margin-left: 8px; }
.lista-com .autor .quien { color: var(--rosa-luz); }
.lista-com .autor .quien::after { content: "autor"; font: 800 .68rem var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--menta); border: 1.5px solid var(--menta); padding: 2px 6px; margin-left: 8px; }
.lista-com p { margin-top: 4px; color: #e6ded5; white-space: pre-wrap; overflow-wrap: anywhere; }
.lista-com .borrar { background: none; border: 0; color: var(--tenue); font: 600 .8rem var(--sans); text-decoration: underline; cursor: pointer; padding: 6px 0 0; }
.lista-com .nadie { font: italic 1rem var(--nota); color: var(--tenue); border: 0; }

@media (min-width: 900px) {
  .aula { grid-template-columns: 300px 1fr; align-items: start; column-gap: 40px; }
  .temario { position: sticky; top: 78px; }
}
@media (max-width: 899px) {
  .sala { order: -1; }
}