/* Seção "O que é um agente" — usa os tokens da página (--graphite, --ivory, --lime, --muted, --line) */
.agent-demo .split { align-items: end; }

.agent-demo .agent-player {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 3.5rem;
  align-items: start;
  margin-top: 3.5rem;
}

.agent-demo .agent-tabs { list-style: none; margin: 0; padding: 0; }
.agent-demo .agent-tabs li { border-top: 1px solid rgb(174, 182, 162); position: relative; }
.agent-demo .agent-tabs li:last-child { border-bottom: 1px solid rgb(174, 182, 162); }

.agent-demo .agent-tab {
  all: unset;
  box-sizing: border-box;
  display: grid;
  grid-template-columns: 3.6rem 1fr;
  align-items: baseline;
  width: 100%;
  padding: 1.35rem 0 1.25rem;
  cursor: pointer;
  color: var(--graphite);
}
.agent-demo .agent-tab .agent-num {
  font-size: 2.1rem; line-height: 1; font-weight: 500; letter-spacing: -0.07em;
  color: rgb(109, 118, 94); transition: color 200ms;
}
.agent-demo .agent-tab .agent-title { margin: 0; font-size: clamp(1.2rem, 1.7vw, 1.45rem); transition: transform 200ms; }
.agent-demo .agent-tab:hover .agent-title { transform: translateX(4px); }
.agent-demo .agent-tab:focus-visible { outline: 3px solid rgb(105, 127, 34); outline-offset: 4px; }
.agent-demo .agent-tab[aria-selected="true"] .agent-num { color: var(--graphite); }

/* barra de progresso do loop ativo, desenhada sobre a linha de cima */
.agent-demo .agent-progress {
  position: absolute; left: 0; top: -1px; height: 3px; width: 100%;
  background: var(--graphite);
  transform: scaleX(0); transform-origin: left center;
}

.agent-demo .agent-panel { padding: 0 0 1.6rem 3.6rem; }
.agent-demo .agent-panel p { margin: 0 0 0.9rem; font-size: 0.98rem; line-height: 1.65; max-width: 52ch; }
.agent-demo .agent-panel p:last-child { margin-bottom: 0; }
.agent-demo .agent-tag {
  display: inline-block; margin-right: 0.5rem; padding: 0.1rem 0.55rem;
  font-size: 0.7rem; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase;
  vertical-align: 0.12em; border: 1px solid var(--graphite);
}
.agent-demo .agent-tag--depois { background: var(--graphite); color: var(--lime); }

/* com JS, só o painel ativo fica aberto */
.agent-demo .agent-player.is-ready .agent-panel { display: none; }
.agent-demo .agent-player.is-ready .agent-panel.is-active { display: block; animation: agent-in 380ms cubic-bezier(0.16, 1, 0.3, 1); }
@keyframes agent-in { from { opacity: 0; transform: translateY(6px); } }

.agent-demo .agent-screen { margin: 0; position: sticky; top: 1.5rem; }
.agent-demo .agent-frame { aspect-ratio: 4 / 3; background: var(--graphite); overflow: hidden; }
.agent-demo .agent-frame video { display: block; width: 100%; height: 100%; object-fit: contain; }
.agent-demo .agent-screen figcaption {
  display: flex; justify-content: space-between; gap: 1rem; margin-top: 0.85rem;
  font-size: 0.8rem; color: var(--muted);
}
.agent-demo .agent-toggle {
  all: unset; cursor: pointer; font-weight: 700; color: var(--graphite);
  text-decoration: underline; text-underline-offset: 0.25em;
}
.agent-demo .agent-toggle:focus-visible { outline: 3px solid rgb(105, 127, 34); outline-offset: 3px; }

@media (max-width: 999px) {
  .agent-demo .agent-player { gap: 2.5rem; }
}
@media (max-width: 799px) {
  .agent-demo .agent-player { grid-template-columns: 1fr; gap: 1.5rem; margin-top: 2.5rem; }
  .agent-demo .agent-screen { position: static; order: -1; margin-inline: -1.25rem; }
  .agent-demo .agent-screen figcaption { padding-inline: 1.25rem; }
  .agent-demo .agent-tab { grid-template-columns: 2.8rem 1fr; padding: 1.1rem 0 1rem; min-height: 44px; }
  .agent-demo .agent-tab .agent-num { font-size: 1.7rem; }
  .agent-demo .agent-panel { padding-left: 2.8rem; }
}
@media (prefers-reduced-motion: reduce) {
  .agent-demo .agent-player.is-ready .agent-panel.is-active { animation: none; }
  .agent-demo .agent-tab:hover .agent-title { transform: none; }
}

/* ponte entre o exemplo e a promessa da imersão */
.agent-demo .agent-bridge {
  display: grid; grid-template-columns: 1fr 1fr; gap: 6rem;
  margin-top: 2.5rem; padding-top: 1.75rem; border-top: 1px solid rgb(174, 182, 162);
}
.agent-demo .agent-bridge .eyebrow { margin: 0.35rem 0 0; }
.agent-demo .agent-bridge p:last-child { margin: 0; max-width: 60ch; font-size: 1.06rem; }
@media (max-width: 1000px) { .agent-demo .agent-bridge { gap: 3rem; } }
@media (max-width: 799px) { .agent-demo .agent-bridge { grid-template-columns: 1fr; gap: 0.75rem; margin-top: 2rem; } }

.agent-demo .agent-player { grid-template-areas: "tabs screen" "panels screen"; row-gap:0; }
.agent-demo .agent-tabs { grid-area:tabs; }
.agent-demo .agent-panels { grid-area:panels; margin-top:1.5rem; }
.agent-demo .agent-screen { grid-area:screen; }
.agent-demo .agent-title { font-weight:700; }
.agent-demo .agent-toggle { min-width:88px; min-height:44px; display:inline-flex; align-items:center; justify-content:center; }
.agent-demo [hidden] { display:none !important; }
.agent-demo .agent-panel { min-width:0; }
.agent-demo .agent-panel:focus-visible { outline:3px solid #697f22; outline-offset:4px; }
@media(max-width:799px) { .agent-demo .agent-player {grid-template-areas:"screen" "tabs" "panels";row-gap:1.5rem;} .agent-demo .agent-panels {margin-top:0;} }