body {
  font-family: system-ui, sans-serif;
  background: #0d1117;
  color: #c9d1d9;
  margin: 0;
  padding: 20px;
}

.container { max-width: 900px; margin: 0 auto; }

h1 { text-align: center; font-size: 2.2rem; }

.drop-zone {
  border: 2px dashed #30363d;
  border-radius: 8px;
  padding: 60px 20px;
  text-align: center;
  margin: 20px 0;
  transition: all 0.2s;
}

.drop-zone.dragover {
  border-color: #58a6ff;
  background: #161b22;
}

#json-input {
  width: 100%;
  height: 120px;
  background: #161b22;
  color: #c9d1d9;
  border: 1px solid #30363d;
  border-radius: 6px;
  padding: 12px;
  font-family: 'Consolas', monospace;
  resize: vertical;
}

.output { margin-top: 30px; }

.toolbar {
  margin-bottom: 10px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

button {
  background: #21262d;
  color: #c9d1d9;
  border: 1px solid #30363d;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
}

button:hover { background: #30363d; }

pre {
  background: #161b22;
  padding: 16px;
  border-radius: 6px;
  overflow: auto;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.hidden { display: none; }

.string { color: #9ecbff; }
.number { color: #79c0ff; }
.boolean { color: #ffa657; }
.null { color: #ffa657; }
.key { color: #7ee787; }