priv/static/demo_director.css

/*
 * demo_director — overlay styles
 *
 * Self-contained, no framework dependency. All selectors are namespaced
 * under .demo-director__* so they cannot collide with host-app CSS.
 */

.demo-director__subtitle {
  position: fixed;
  left: 50%;
  bottom: 40px;
  transform: translateX(-50%);
  max-width: min(820px, calc(100vw - 32px));
  padding: 18px 28px;
  background: #000;
  color: #fde047;
  font: 600 22px/1.35 system-ui, -apple-system, "Segoe UI", sans-serif;
  letter-spacing: 0.01em;
  border-radius: 12px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
  z-index: 2147483646;
  pointer-events: none;
  text-align: left;
  opacity: 0;
  transition: opacity 180ms ease;
}

.demo-director__subtitle[data-visible="true"] {
  opacity: 1;
}

.demo-director__highlight {
  position: fixed;
  border: 2px solid #ef4444;
  border-radius: 4px;
  pointer-events: none;
  z-index: 2147483645;
  transition: opacity 180ms ease;
  opacity: 0;
}

.demo-director__highlight[data-visible="true"] {
  opacity: 1;
}

.demo-director__end {
  position: fixed;
  left: 50%;
  bottom: 40px;
  transform: translateX(-50%);
  padding: 14px 22px;
  background: #000;
  color: #fde047;
  font: 600 18px/1.35 system-ui, -apple-system, "Segoe UI", sans-serif;
  border-radius: 12px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
  z-index: 2147483646;
  display: flex;
  align-items: center;
  gap: 16px;
  opacity: 0;
  transition: opacity 220ms ease;
}

.demo-director__end[data-visible="true"] {
  opacity: 1;
}

.demo-director__end__label {
  letter-spacing: 0.01em;
}

.demo-director__end__back {
  color: #f8fafc;
  background: rgba(255, 255, 255, 0.12);
  font: 600 14px/1 system-ui, -apple-system, "Segoe UI", sans-serif;
  padding: 8px 14px;
  border-radius: 8px;
  text-decoration: none;
  transition: background 120ms ease;
}

.demo-director__end__back:hover {
  background: rgba(255, 255, 255, 0.22);
  text-decoration: none;
}

@media (prefers-reduced-motion: reduce) {
  .demo-director__subtitle,
  .demo-director__highlight,
  .demo-director__end {
    transition: opacity 0ms;
  }
}