:root {
  font-family: Inter, system-ui, Avenir, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  font-weight: 400;

  color-scheme: light dark;
  color: rgba(255, 255, 255, 0.87);
  background-color: #242424;

  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

form#paragraphForm {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  margin: 20px;
}

form#paragraphForm label {
  margin-bottom: 10px;
  font-weight: 500;
}

form#paragraphForm input {
  margin-bottom: 10px;
  padding: 5px;
}

/* Loading overlay and spinner */
#loadingOverlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.35);
  -webkit-backdrop-filter: blur(1px);
  backdrop-filter: blur(1px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 150ms ease, visibility 150ms ease;
  z-index: 9999;
}

#loadingOverlay.show {
  opacity: 1;
  visibility: visible;
}

#loadingOverlay .spinner {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.35);
  border-top-color: #ffffff;
  animation: spin 1s linear infinite;
  margin-right: 12px;
}

#loadingOverlay .loading-label {
  color: #fff;
  font-size: 14px;
  font-weight: 500;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  #loadingOverlay {
    transition: none;
  }

  #loadingOverlay .spinner {
    animation: none;
    border-top-color: rgba(255, 255, 255, 0.85);
  }
}

/* Message bar */
.message-bar {
  position: fixed;
  top: 12px;
  right: 12px;
  max-width: min(90vw, 420px);
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 14px;
  line-height: 1.3;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  background: #2d2d2d;
  color: #fff;
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: opacity 150ms ease, transform 150ms ease;
  z-index: 10000;
}

.message-bar.show {
  opacity: 1;
  transform: translateY(0);
}

.message-bar.info {
  background: #2d2d2d;
}

.message-bar.success {
  background: #1b5e20;
}

.message-bar.error {
  background: #7f1d1d;
}