/* ============================================================
   TopoApp — Aula de la Academia (cursos en video estilo Platzi)
   ============================================================ */
.aula { --c: #D96A2B; --c-suave: color-mix(in srgb, var(--c) 12%, white); --tx: #1c1917; --t2: #6e625c; --ln: #f0e2d6; }
.aula-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 0 22px; border-radius: 14px; border: 0;
    background: var(--c); color: #fff; font-weight: 800; text-decoration: none; cursor: pointer; transition: transform .15s, box-shadow .15s; box-shadow: 0 12px 28px -14px var(--c); }
.aula-btn:hover { color: #fff; transform: translateY(-2px); }
.aula-btn--sec { background: #fff; color: var(--tx); border: 1px solid var(--ln); box-shadow: none; }
.aula-btn--sec:hover { color: var(--tx); border-color: var(--c); }
.aula-btn[disabled] { opacity: .6; pointer-events: none; }
.aula-kicker { display: inline-flex; align-items: center; gap: 7px; font-size: .78rem; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; color: var(--c); }
.aula-barra { display: block; height: 7px; border-radius: 99px; background: color-mix(in srgb, var(--c) 16%, #eee); overflow: hidden; }
.aula-barra > span { display: block; height: 100%; border-radius: 99px; background: var(--c); transition: width .4s; }

/* ── Página del curso ─────────────────────────────────────── */
.aula-hero { padding: clamp(104px, 13vw, 140px) 0 44px;
    background: radial-gradient(800px 360px at 80% 0%, color-mix(in srgb, var(--c) 22%, transparent), transparent 70%), linear-gradient(180deg, #1c1208, #2b1a10 70%, #fffaf6 70.1%); }
.aula-hero-grid { display: grid; gap: 28px; align-items: center; }
.aula-hero-txt { color: #fff; }
.aula-migas { display: flex; gap: 8px; align-items: center; font-size: .85rem; margin-bottom: 14px; color: rgba(255,255,255,.7); }
.aula-migas a { color: rgba(255,255,255,.85); text-decoration: none; }
.aula-hero-txt .aula-kicker { color: color-mix(in srgb, var(--c) 55%, white); }
.aula-hero h1 { font-size: clamp(2rem, 5vw, 3.1rem); font-weight: 900; letter-spacing: -.03em; line-height: 1.08; margin: 10px 0 12px; color: #fff; }
.aula-lead { font-size: 1.06rem; color: rgba(255,255,255,.82); max-width: 620px; margin: 0 0 18px; }
.aula-datos { list-style: none; padding: 0; margin: 0 0 20px; display: flex; flex-wrap: wrap; gap: 8px 16px; font-size: .9rem; color: rgba(255,255,255,.85); }
.aula-datos li { display: inline-flex; align-items: center; gap: 7px; }
.aula-datos i { color: color-mix(in srgb, var(--c) 55%, white); }
.aula-avance { max-width: 440px; margin: 0 0 18px; }
.aula-avance div { display: flex; justify-content: space-between; gap: 10px; margin-bottom: 7px; font-size: .9rem; }
.aula-avance span { color: rgba(255,255,255,.75); }
.aula-avance .aula-barra { background: rgba(255,255,255,.18); }
.aula-hero-cta { display: flex; flex-wrap: wrap; gap: 10px; }
.aula-nota { margin: 12px 0 0; font-size: .84rem; color: rgba(255,255,255,.7); }
.aula-hero-portada { position: relative; border-radius: 22px; overflow: hidden; aspect-ratio: 16/9; background: linear-gradient(135deg, var(--c), color-mix(in srgb, var(--c) 45%, #1c1208)); box-shadow: 0 30px 70px -30px rgba(0,0,0,.6); }
.aula-hero-portada img { width: 100%; height: 100%; object-fit: cover; display: block; }
.aula-portada-icono { position: absolute; inset: 0; display: grid; place-items: center; font-size: 4rem; color: rgba(255,255,255,.9); }
.aula-portada-play { position: absolute; inset: 0; display: grid; place-items: center; text-decoration: none; }
.aula-portada-play i { width: 74px; height: 74px; border-radius: 50%; display: grid; place-items: center; background: rgba(255,255,255,.95); color: var(--c); font-size: 2.4rem; padding-left: 4px; box-shadow: 0 14px 40px rgba(0,0,0,.35); transition: transform .2s; }
.aula-portada-play:hover i { transform: scale(1.08); }
@media (min-width: 900px) { .aula-hero-grid { grid-template-columns: 1.1fr .9fr; gap: 48px; } .aula-hero { background: radial-gradient(800px 360px at 80% 0%, color-mix(in srgb, var(--c) 22%, transparent), transparent 70%), linear-gradient(180deg, #1c1208, #2b1a10); } }

.aula-temario { padding: 36px 0 60px; }
.aula-temario h2 { font-size: 1.5rem; font-weight: 900; margin-bottom: 16px; }
.aula-modulo { background: #fff; border: 1px solid var(--ln); border-radius: 18px; margin-bottom: 12px; overflow: hidden; }
.aula-modulo summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 16px 18px; }
.aula-modulo summary::-webkit-details-marker { display: none; }
.aula-modulo summary span { display: flex; flex-direction: column; }
.aula-modulo summary small { font-size: .74rem; font-weight: 800; color: var(--c); text-transform: uppercase; letter-spacing: .05em; }
.aula-modulo summary b { font-size: 1.04rem; }
.aula-modulo summary em { font-style: normal; font-size: .84rem; color: var(--t2); white-space: nowrap; }
.aula-modulo summary::after { content: "\F282"; font-family: bootstrap-icons; color: var(--t2); transition: transform .15s; }
.aula-modulo[open] summary::after { transform: rotate(180deg); }

/* Lista de clases (temario y lateral) */
.aula-lista { list-style: none; margin: 0; padding: 0 8px 8px; }
.aula-lista li a { display: grid; grid-template-columns: auto 1fr auto; gap: 12px; align-items: center; padding: 10px; border-radius: 12px; color: var(--tx); text-decoration: none; }
.aula-lista li a:hover { background: #fdf6f0; color: var(--tx); }
.aula-n { width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; font-size: .84rem; font-weight: 800; background: #f6eee7; color: var(--t2); flex-shrink: 0; }
.aula-lista li.is-completa .aula-n { background: #16a34a; color: #fff; }
.aula-lista li.is-en_curso .aula-n { background: var(--c-suave); color: var(--c); box-shadow: inset 0 0 0 2px var(--c); }
.aula-l-txt { display: flex; flex-direction: column; min-width: 0; }
.aula-l-txt b { font-size: .95rem; font-weight: 700; line-height: 1.3; }
.aula-l-txt small { color: var(--t2); font-size: .8rem; display: inline-flex; gap: 5px; align-items: center; }
.aula-encurso { color: var(--c); font-weight: 700; }
.aula-l-ir { color: #c9b8ab; }
.aula-lista--compacta { padding: 0; }
.aula-lista--compacta li a { grid-template-columns: auto 1fr; padding: 9px 10px; }
.aula-lista--compacta li.is-actual a { background: var(--c-suave); }
.aula-lista--compacta li.is-actual b { color: var(--c); }

/* ── Clase ─────────────────────────────────────────────────── */
.aula-clase { padding-top: 78px; }
.aula-barra-sup { position: sticky; top: 78px; z-index: 20; background: rgba(255, 250, 246, .94); backdrop-filter: blur(10px); border-bottom: 1px solid var(--ln); }
.aula-barra-sup-in { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 56px; }
.aula-volver { display: flex; align-items: center; gap: 10px; color: var(--tx); text-decoration: none; min-width: 0; }
.aula-volver span { display: flex; flex-direction: column; min-width: 0; }
.aula-volver small { font-size: .72rem; color: var(--t2); }
.aula-volver b { font-size: .92rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 46vw; }
.aula-prog { display: flex; flex-direction: column; gap: 5px; min-width: 150px; font-size: .8rem; color: var(--t2); text-align: right; }
.aula-grid { display: grid; gap: 28px; padding-top: 20px; padding-bottom: 50px; }
@media (min-width: 992px) { .aula-grid { grid-template-columns: minmax(0, 1fr) 340px; } }
.aula-principal { min-width: 0; }

.aula-video { position: relative; aspect-ratio: 16/9; border-radius: 18px; overflow: hidden; background: #0b0908; box-shadow: 0 24px 60px -30px rgba(0,0,0,.55); }
.aula-video iframe, .aula-iframe, .aula-iframe iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.aula-facade { position: absolute; inset: 0; width: 100%; padding: 0; border: 0; background: radial-gradient(600px 300px at 50% 40%, color-mix(in srgb, var(--c) 40%, transparent), transparent 70%), #120d0a; cursor: pointer; }
.aula-facade img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .82; }
.aula-facade-play { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); width: 78px; height: 78px; border-radius: 50%; display: grid; place-items: center;
    background: var(--c); color: #fff; font-size: 2.6rem; padding-left: 5px; box-shadow: 0 14px 44px rgba(0,0,0,.45); transition: transform .2s; }
.aula-facade:hover .aula-facade-play { transform: translate(-50%, -50%) scale(1.08); }
.aula-facade-txt { position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%); white-space: nowrap; padding: 7px 14px; border-radius: 999px; background: rgba(0,0,0,.6); color: #fff; font-weight: 700; font-size: .86rem; }
.aula-siguiente-aviso { position: absolute; inset: 0; z-index: 3; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; padding: 20px; text-align: center; background: rgba(12, 9, 7, .9); color: #fff; }
.aula-siguiente-aviso[hidden] { display: none; }
.aula-siguiente-aviso small { color: rgba(255,255,255,.75); }
.aula-siguiente-aviso strong { font-size: clamp(1.05rem, 3vw, 1.4rem); max-width: 560px; }
.aula-siguiente-aviso div { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 8px; }

.aula-encabezado { padding: 20px 0 6px; }
.aula-encabezado h1 { font-size: clamp(1.5rem, 3.6vw, 2.1rem); font-weight: 900; letter-spacing: -.02em; line-height: 1.15; margin: 8px 0 12px; }
.aula-estado { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.aula-ok { display: inline-flex; align-items: center; gap: 7px; padding: 8px 14px; border-radius: 999px; background: #dcfce7; color: #166534; font-weight: 800; font-size: .88rem; }
.aula-pista { font-size: .86rem; color: var(--t2); display: inline-flex; gap: 6px; align-items: center; }
.aula-guardar { display: flex; align-items: center; gap: 12px; margin: 16px 0 4px; padding: 12px 14px; border-radius: 14px; background: var(--c-suave); font-size: .9rem; }
.aula-guardar > i { font-size: 1.3rem; color: var(--c); }
.aula-guardar span { flex: 1; }
.aula-guardar a { font-weight: 800; color: var(--c); text-decoration: none; white-space: nowrap; }
.aula-texto { margin-top: 18px; }

.aula-temario-movil { margin: 16px 0 0; background: #fff; border: 1px solid var(--ln); border-radius: 16px; }
.aula-temario-movil summary { list-style: none; cursor: pointer; padding: 13px 16px; font-weight: 800; display: flex; gap: 8px; align-items: center; }
.aula-temario-movil summary em { margin-left: auto; font-style: normal; color: var(--t2); font-weight: 700; font-size: .86rem; }
.aula-temario-movil summary::-webkit-details-marker { display: none; }
.aula-temario-movil .aula-lista { padding: 0 6px 8px; max-height: 60vh; overflow: auto; }
@media (min-width: 992px) { .aula-temario-movil { display: none; } }

.aula-lateral { display: none; }
@media (min-width: 992px) {
    .aula-lateral { display: block; }
    .aula-lateral-in { position: sticky; top: 150px; max-height: calc(100vh - 170px); overflow: auto; background: #fff; border: 1px solid var(--ln); border-radius: 18px; padding: 14px 8px 8px; }
}
.aula-lateral-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; padding: 0 10px 10px; border-bottom: 1px solid var(--ln); margin-bottom: 6px; }
.aula-lateral-head span { font-size: .8rem; color: var(--t2); }

.aula-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 26px; }
.aula-nav a { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-radius: 16px; background: #fff; border: 1px solid var(--ln); color: var(--tx); text-decoration: none; min-width: 0; }
.aula-nav a span { display: flex; flex-direction: column; min-width: 0; }
.aula-nav small { font-size: .76rem; color: var(--t2); }
.aula-nav b { font-size: .92rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.aula-nav-sig { justify-content: space-between; text-align: right; background: var(--c) !important; border-color: var(--c) !important; color: #fff !important; }
.aula-nav-sig small { color: rgba(255,255,255,.8); }
.aula-nav-sig > i { font-size: 1.5rem; }
@media (max-width: 575.98px) { .aula-nav { grid-template-columns: 1fr; } .aula-volver b { max-width: 40vw; } .aula-prog { min-width: 110px; } }

/* Celular: el menú con submenú mide ~126 px; la barra del curso no se queda fija para no quitar espacio */
@media (max-width: 767.98px) {
    .aula-clase { padding-top: 126px; }
    .aula-barra-sup { position: static; }
    .aula-hero { padding-top: 150px; }
}