body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f4f6f8;
  margin: 0;
  padding: 0;
}


.exercise-container {
  max-width: 900px;
  margin: 2rem auto;
  padding: 2rem;
  border-radius: 12px;
  background-color: #fdfdfd;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  font-family: sans-serif;
}

.section-with-label {
  display: flex;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.label {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-weight: bold;
  color: white;
  padding: 0.5rem;
  margin-right: 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
}

.aufgabe-label { background-color: #9c27b0; } /* Purple */
.antwort-label { background-color: #3f51b5; }  /* Blue */
.feedback-label { background-color: #fbc02d; color: #333; } /* Yellow */

.text-area {
  width: 100%;
  padding: 0.75rem;
  font-family: monospace;
  font-size: 1rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  resize: vertical;
  box-sizing: border-box;
}

.output-area {
  background-color: #f5f5f5;
}

.instruction-box {
  background-color: #eef;
  padding: 1rem;
  border-radius: 8px;
  width: 100%;
  font-size: 1rem;
}

.submit-button {
  background-color: #007BFF;
  color: white;
  font-weight: bold;
  padding: 0.6rem 1.2rem;
  font-size: 1rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  margin-bottom: 1.5rem;
}

.submit-button:hover {
  background-color: #0056b3;
}











.visual-novel-container {
  max-width: 800px;
  margin: auto;
  font-family: sans-serif;
}

.visual-novel-image {
  width: 100%;
  border-radius: 10px;
}

.visual-novel-source {
  font-size: 0.75em;
  color: gray;
  text-align: right;
  margin-top: 4px;
  margin-bottom: 10px;
}

.visual-novel-text {
  background: #f9f9f9;
  padding: 12px;
  border-radius: 8px;
  margin-bottom: 16px;
  white-space: pre-wrap;
  min-height: 100px;
}

.visual-novel-navigation {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
}

.visual-novel-counter {
  font-weight: bold;
}