/* ==========================================================================
   demo.css — ventana emergente con reproductor y lista de videos del demo
   ========================================================================== */

.demo-modal {
  position: fixed;
  inset: 0;
  margin: auto;
  width: min(1100px, calc(100vw - 32px));
  max-height: calc(100vh - 32px);
  padding: 0;
  border: 0;
  border-radius: 18px;
  background: var(--color-surface);
  color: var(--color-text);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
  overflow: hidden;
}

.demo-modal::backdrop {
  background: rgba(10, 10, 12, 0.6);
}

.demo-modal[open] {
  animation: demo-entrada 0.25s ease-out backwards;
}

@keyframes demo-entrada {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
}

.demo-modal__panel {
  max-height: calc(100vh - 32px);
  overflow-y: auto;
  padding: 24px;
}

.demo-modal__cabecera {
  margin: 0 44px 16px 0;
}

.demo-modal__titulo {
  margin: 0;
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.demo-modal__cerrar {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-line);
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  transition: var(--transition);
  z-index: 2;
}

.demo-modal__cerrar:hover {
  color: var(--color-red);
  border-color: var(--color-red);
}

.demo-modal__cerrar:focus-visible {
  outline: 2px solid var(--color-red);
  outline-offset: 2px;
}

/* ---------- Diseño: reproductor a la izquierda, lista a la derecha ---------- */

.demo-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 900px) {
  .demo-layout {
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: start;
  }
}

.demo-player {
  min-width: 0;
}

.demo-marco {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  overflow: hidden;
  background: #000;
}

.demo-marco iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.demo-marco .demo-vacio {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 16px;
  color: #fff;
}

.demo-player__titulo {
  margin: 12px 0 0;
  font-weight: 700;
  font-size: 1rem;
}

/* ---------- Lista de miniaturas ---------- */

.demo-lista {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 420px;
  overflow-y: auto;
  padding-right: 4px;
}

@media (max-width: 899px) {
  .demo-lista {
    max-height: 260px;
  }
}

.demo-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 8px;
  border: 1px solid var(--color-line);
  border-radius: 12px;
  background: var(--color-bg-soft);
  color: var(--color-text);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
}

.demo-item:hover {
  border-color: var(--color-red);
}

.demo-item:focus-visible {
  outline: 2px solid var(--color-red);
  outline-offset: 2px;
}

.demo-item.is-activo {
  border-color: var(--color-red);
  background: var(--color-surface);
  box-shadow: inset 3px 0 0 var(--color-red);
}

.demo-item__miniatura {
  position: relative;
  flex: 0 0 128px;
  aspect-ratio: 16 / 9;
  border-radius: 8px;
  overflow: hidden;
  background: #000;
}

.demo-item__miniatura img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.demo-item__play {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 0.9rem;
  background: rgba(0, 0, 0, 0.25);
}

.demo-item__texto {
  font-weight: 600;
  font-size: 0.92rem;
  line-height: 1.3;
}

.demo-vacio {
  margin: 0;
  padding: 40px 12px;
  text-align: center;
  color: var(--color-gray);
}

@media (prefers-reduced-motion: reduce) {
  .demo-modal[open] {
    animation: none;
  }
}