.perceiving-body {
  margin: 0;
  background: var(--primary-text);
  overflow: hidden;
  height: 100vh;
}

.perceiving-intro,
.perceiving-fallback {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  background: var(--primary-bg);
  gap: 1rem;
}

.perceiving-intro h1,
.perceiving-fallback h1 {
  font-family: Georgia, 'Times New Roman', serif;
  color: var(--primary-text);
}

.perceiving-intro p,
.perceiving-fallback p {
  max-width: 480px;
  color: var(--secondary-text);
}

.perceiving-privacy-note {
  font-size: 0.875rem;
  color: var(--accent-color);
  font-style: italic;
}

.perceiving-start-btn {
  display: inline-block;
  background: var(--warm-brown);
  color: white;
  border: none;
  padding: 0.875rem 2.5rem;
  font-size: 1.0625rem;
  font-weight: 500;
  border-radius: var(--border-radius);
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  font-family: inherit;
  margin-top: 1rem;
}

.perceiving-start-btn:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--shadow-warm);
  color: white;
  text-decoration: none;
}

.perceiving-home-link {
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  color: var(--primary-text);
  text-decoration: none;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 1.125rem;
  z-index: 10;
}

.perceiving-home-link--stage {
  color: var(--soft-cream);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.6);
}

.perceiving-stage {
  position: fixed;
  inset: 0;
  background: #000;
}

.perceiving-video,
.perceiving-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* The canvas is a replaced element, so it honours object-fit. It must match
   the video's `cover` exactly: with the default `fill` the two scale by
   different factors and the detection boxes drift off the video content. */
.perceiving-video,
.perceiving-canvas {
  object-fit: cover;
}

/* Only the video is mirrored. Mirroring the canvas would also mirror every
   drawn label, so drawDetections() flips the box X coordinates instead. */
.perceiving-mirrored .perceiving-video {
  transform: scaleX(-1);
}

.perceiving-caption-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.25rem 1.5rem 1.5rem;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.75), transparent);
  color: var(--soft-cream);
  font-size: 1.0625rem;
  text-align: center;
  min-height: 3rem;
}

.perceiving-flip-btn {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  background: rgba(0, 0, 0, 0.4);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  z-index: 10;
}

.perceiving-flip-btn .corner-bracket {
  border-color: var(--soft-cream);
  width: 12px;
  height: 12px;
}

@media (min-width: 768px) {
  .perceiving-flip-btn {
    display: none;
  }
}

.hide {
  display: none !important;
}