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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: #f5f5f5;
}

.pdf-viewer {
  width: 100%;
  flex: 1;
  border: none;
}

.download-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: #4285f4;
  color: white;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(66, 133, 244, 0.3);
  transition: all 0.3s ease;
}

.download-btn:hover {
  background: #1a73e8;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(66, 133, 244, 0.4);
}

.download-btn svg {
  width: 20px;
  height: 20px;
}

@media (max-width: 600px) {
  .download-btn {
    bottom: 10px;
    right: 10px;
    padding: 10px 20px;
    font-size: 14px;
  }
}