/* dist/css/universidade.css — Universidade AIA (universidade.html): o vídeo em cima e as aulas em grade, por trilha. */
.u-topo { padding: 44px 0 22px; }
.u-topo h1 { margin: 0 0 6px; font-size: clamp(30px, 4.4vw, 46px); line-height: 1.08; letter-spacing: -.03em; font-weight: 800; }
.u-topo p { margin: 0; max-width: 640px; color: var(--s-suave); font-size: 17px; }

/* Aula aberta */
.u-palco { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 24px; align-items: start; margin-top: 22px; }
.u-video { border-radius: var(--s-raio); overflow: hidden; background: #000; border: 1px solid var(--s-linha); box-shadow: var(--s-sombra); aspect-ratio: 16 / 9; }
.u-video video { width: 100%; height: 100%; background: #000; }
.u-agora { padding: 20px; border-radius: var(--s-raio); background: var(--s-cartao); border: 1px solid var(--s-linha); box-shadow: var(--s-sombra-leve); }
.u-etiqueta { display: inline-block; font-size: 11.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--s-azul); }
.u-agora h2 { margin: 8px 0 6px; font-size: 22px; line-height: 1.2; letter-spacing: -.02em; }
.u-agora p { margin: 0 0 18px; color: var(--s-suave); font-size: 14.5px; }
.u-proxima { width: 100%; flex-direction: column; align-items: flex-start; gap: 2px; text-align: left; border-radius: 10px; padding: 12px 14px; }
.u-proxima span { display: block; font-size: 11.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; opacity: .7; }
.u-proxima strong { display: block; font-size: 15px; line-height: 1.25; }
.u-progresso { margin-top: 18px; font-size: 13px; color: var(--s-suave); }
.u-progresso i { display: block; height: 6px; margin-top: 8px; border-radius: 999px; background: var(--s-cartao-2); overflow: hidden; }
.u-progresso b { display: block; height: 100%; width: 0; border-radius: inherit; background: var(--s-azul); transition: width .4s ease; }

/* Trilhas */
.u-trilha { margin-top: 52px; }
.u-trilha h3 { margin: 0 0 4px; font-size: 20px; letter-spacing: -.01em; }
.u-trilha > p { margin: 0 0 18px; color: var(--s-suave); font-size: 14.5px; }
.u-grade { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 16px; }
.u-aula {
  display: block; width: 100%; padding: 0; text-align: left; font: inherit; color: inherit; cursor: pointer;
  border-radius: 14px; overflow: hidden; background: var(--s-cartao); border: 1px solid var(--s-linha); box-shadow: var(--s-sombra-leve);
  transition: transform .16s ease, border-color .16s ease, background .16s ease;
}
.u-aula:hover:not(:disabled) { transform: translateY(-3px); border-color: var(--s-azul); }
.u-aula[aria-current="true"] { border-color: var(--s-azul); box-shadow: 0 0 0 1px var(--s-azul); }
.u-capa { position: relative; aspect-ratio: 16 / 9; background: var(--s-fundo-2) center / cover no-repeat; }
.u-capa::after { content: attr(data-duracao); position: absolute; right: 8px; bottom: 8px; padding: 2px 7px; border-radius: 6px; font-size: 12px; font-weight: 600; color: #fff; background: rgba(0, 0, 0, .7); }
.u-vista { position: absolute; left: 8px; top: 8px; padding: 2px 8px; border-radius: 999px; font-size: 11.5px; font-weight: 700; color: #04122b; background: #5eead4; }
.u-corpo { padding: 12px 14px 14px; }
.u-num { font-size: 11.5px; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; color: var(--s-suave); }
.u-titulo { margin-top: 3px; font-size: 15px; font-weight: 600; line-height: 1.3; }
.u-aula:disabled { cursor: default; opacity: .55; }
.u-aula:disabled .u-capa { display: grid; place-items: center; }
.u-aula:disabled .u-capa::after { display: none; }
.u-aula:disabled .u-capa::before { content: "Em breve"; font-size: 13px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--s-suave); }
.u-motivo { margin-top: 4px; font-size: 12.5px; color: var(--s-suave); }

@media (max-width: 900px) { .u-palco { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .u-aula, .u-progresso b { transition: none; } }