.overlay-preview-page {
  min-height: 100vh;
}

.overlay-preview-shell {
  position: relative;
  z-index: 1;
  width: min(100%, 72rem);
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.overlay-preview-header {
  margin-bottom: 1.5rem;
}

.overlay-preview-eyebrow {
  margin: 0 0 0.35rem;
  color: var(--accent-bright);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.overlay-preview-header h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.6rem);
  line-height: 1.05;
}

.overlay-preview-subtitle {
  margin: 0.65rem 0 0;
  max-width: 38rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.overlay-preview-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(18rem, 0.9fr);
  gap: 1.25rem;
  align-items: start;
}

.overlay-preview-stage,
.overlay-preview-setup {
  border-radius: calc(var(--radius) + 2px);
  border: 1px solid rgba(88, 201, 243, 0.12);
  background:
    linear-gradient(180deg, rgba(16, 24, 34, 0.82), rgba(8, 12, 18, 0.78));
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(14px);
}

.overlay-preview-stage {
  padding: 1rem;
}

.overlay-preview-stage-label {
  margin-bottom: 0.85rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.overlay-preview-frame {
  display: grid;
  place-items: start center;
  min-height: 38rem;
  padding: 1.5rem;
  border-radius: var(--radius-sm);
  background:
    linear-gradient(45deg, rgba(255, 255, 255, 0.05) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(255, 255, 255, 0.05) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(255, 255, 255, 0.05) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(255, 255, 255, 0.05) 75%);
  background-size: 24px 24px;
  background-position:
    0 0,
    0 12px,
    12px -12px,
    -12px 0;
  background-color: rgba(4, 8, 12, 0.55);
}

.overlay-preview-frame iframe {
  width: 26rem;
  height: 34rem;
  border: 0;
  background: transparent;
  overflow: hidden;
}

.overlay-preview-setup {
  padding: 1.35rem 1.4rem;
}

.overlay-preview-setup h2 {
  margin: 0 0 0.85rem;
  font-size: 1.15rem;
}

.overlay-preview-steps {
  margin: 0 0 1.1rem;
  padding-left: 1.15rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.overlay-preview-steps li + li {
  margin-top: 0.45rem;
}

.overlay-preview-url-label {
  display: block;
  margin-bottom: 0.45rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.overlay-preview-url-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.55rem;
}

.overlay-preview-url-input {
  width: 100%;
  min-height: 2.75rem;
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: rgba(4, 8, 12, 0.9);
  color: var(--text);
  font: inherit;
}

.overlay-preview-url-note {
  min-height: 1.25rem;
  margin: 0.55rem 0 0;
  color: var(--accent-bright);
  font-size: 0.82rem;
}

.overlay-preview-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

@media (max-width: 900px) {
  .overlay-preview-layout {
    grid-template-columns: 1fr;
  }

  .overlay-preview-frame {
    min-height: auto;
    padding: 1rem;
  }

  .overlay-preview-frame iframe {
    width: 100%;
    max-width: 26rem;
    height: 32rem;
  }
}