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

body {
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(120deg, #dbeafe, #f0f4ff);
  color: #222;
  margin: 0;
  padding: 0;
}


header {
  background: linear-gradient(90deg, #1e3c72, #2a5298);
  color: white;
  padding: 1rem;
  text-align: center;
  font-size: 1.6rem;
  letter-spacing: 1px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  border-bottom: 2px solid #153672;
}



.hints {
  background-color: #eef5ff;
  padding: 0.8rem;
  text-align: center;
  font-size: 0.95rem;
  color: #3b3b3b;
}

.hints code {
  background-color: #dcefff;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
}

.container {
  display: flex;
  height: calc(100vh - 160px);
  padding: 1rem;
  gap: 1rem;
}

textarea {
  width: 50%;
  padding: 1rem;
  border-radius: 10px;
  border: 1px solid #ccc;
  font-size: 1rem;
  resize: none;
  background-color: #ffffff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  font-family: monospace;
  line-height: 1.5;
}

header h1 {
  font-family: 'Poppins', 'Segoe UI', sans-serif;
  font-weight: 500;
  font-size: 2rem;
  color: #ffffff;
  margin: 0;
  padding: 0.5rem 0;
  letter-spacing: 1px;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
}

.preview {
  width: 50%;
  background-color: #ffffff;
  padding: 1rem;
  border-radius: 10px;
  overflow-y: auto;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.preview h1, .preview h2, .preview h3 {
  border-bottom: 1px solid #e0e0e0;
  margin-bottom: 0.6rem;
  padding-bottom: 0.2rem;
  color: #1f2937;
}

.preview p {
  margin: 0.8rem 0;
}

.preview code {
  background-color: #f4f4f4;
  padding: 3px 6px;
  border-radius: 4px;
  color: #d63384;
}

.preview blockquote {
  border-left: 4px solid #a0aec0;
  padding-left: 1rem;
  margin: 1rem 0;
  color: #4b5563;
  background: #f8fafc;
  font-style: italic;
}

.preview ul {
  margin: 0.8rem 0 0.8rem 1rem;
}

footer {
  text-align: center;
  padding: 0.8rem;
  font-size: 0.9rem;
  background-color: #f1f5f9;
  border-top: 1px solid #ccc;
  color: #555;
}