*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #f4f4f5;
  color: #18181b;
}

header {
  background: #1e1b4b;
  color: #fff;
  padding: 1rem 2rem;
}
header h1 { font-size: 1.3rem; font-weight: 700; }
header p  { font-size: 0.8rem; opacity: 0.65; margin-top: 0.2rem; }

main { max-width: 1100px; margin: 2rem auto; padding: 0 1.25rem; }

#upload-zone {
  background: #fff;
  border: 2px dashed #a1a1aa;
  border-radius: 10px;
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
#upload-zone.dragover { border-color: #4f46e5; background: #eef2ff; }
#upload-zone svg { display: block; margin: 0 auto 1rem; }
#upload-zone p { color: #71717a; font-size: 0.9rem; }
#upload-zone strong { color: #4f46e5; }
#upload-zone .hint { font-size: 0.75rem; margin-top: 0.4rem; }
#file-input { display: none; }

#preview-section { display: none; margin-top: 2rem; }
#preview-section.visible { display: block; }

.preview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

@media (max-width: 680px) { .preview-grid { grid-template-columns: 1fr; } }

.panel {
  background: #fff;
  border: 1px solid #e4e4e7;
  border-radius: 8px;
  padding: 1rem;
}
.panel h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #71717a;
  margin-bottom: 0.75rem;
}

#ghost-text-display {
  white-space: pre-wrap;
  font-family: 'Courier New', monospace;
  font-size: 0.78rem;
  line-height: 1.5;
  color: #27272a;
  background: #f9f9fb;
  padding: 0.75rem;
  border-radius: 4px;
  max-height: 420px;
  overflow-y: auto;
}

#pdf-frame {
  width: 100%;
  height: 420px;
  border: 1px solid #e4e4e7;
  border-radius: 4px;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-top: 1.25rem;
}

button {
  padding: 0.55rem 1.2rem;
  border: none;
  border-radius: 6px;
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
}
#download-btn { background: #4f46e5; color: #fff; }
#download-btn:disabled { background: #a5b4fc; cursor: not-allowed; }
#reset-btn { background: #e4e4e7; color: #27272a; }

#status { font-size: 0.82rem; color: #52525b; flex: 1; }
#status.error { color: #dc2626; }