body {
  font-family: 'Segoe UI', sans-serif;
  background: #f0f4f8;
  color: #333;
  padding: 20px;
  max-width: 800px;
  margin: auto;
  line-height: 1.6;
  transition: background 0.3s, color 0.3s;
}
.dark {
  background: #1e1e1e;
  color: #f0f0f0;
}
header {
  text-align: center;
}
input[type="text"] {
  width: 80%;
  padding: 10px;
  margin-top: 10px;
  border: 1px solid #ccc;
  border-radius: 8px;
}
article {
  background: #fff;
  padding: 15px;
  margin: 15px 0;
  border-radius: 10px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}
.dark article {
  background: #2a2a2a;
}
.dark a {
      display: block;
      margin: 10px 0 30px;
      text-decoration: none;
      color: #fff;
    }
  a {
      display: block;
      margin: 10px 0 30px;
      text-decoration: none;
      color: #2c3e50;
    }
    
    .meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9em;
  margin-bottom: 10px;
  color: #555;
}

.meta .id {
  font-weight: bold;
}