* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background: #f5f5f5;
  color: #1d1d1f;
}

main {
  max-width: 1600px;
  margin: 0 auto;
  padding: 24px;
}

header,
.toolbar,
.workspace {
  display: flex;
  gap: 16px;
}

header {
  align-items: flex-start;
  justify-content: space-between;
}

header h1,
.panel h2 {
  margin-top: 0;
}

header p {
  margin-bottom: 0;
}

#status {
  border: 1px solid #aaa;
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 14px;
}

.toolbar {
  align-items: center;
  flex-wrap: wrap;
  margin: 20px 0;
}

button,
.file-button {
  border: 1px solid #777;
  border-radius: 6px;
  background: white;
  padding: 8px 12px;
  font: inherit;
  cursor: pointer;
}

.file-button input {
  display: none;
}

.toolbar span {
  font-size: 13px;
  color: #555;
}

.workspace {
  align-items: stretch;
}

.panel {
  flex: 1 1 0;
  min-width: 0;
  background: white;
  border: 1px solid #ccc;
  border-radius: 8px;
  padding: 16px;
}

textarea {
  display: block;
  width: 100%;
  min-height: 680px;
  resize: vertical;
  border: 1px solid #bbb;
  border-radius: 6px;
  padding: 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px;
  line-height: 1.45;
}

.preview {
  min-height: 680px;
  overflow: auto;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 12px;
}

.preview svg {
  display: block;
  max-width: 100%;
  height: auto;
}

.errors {
  white-space: pre-wrap;
  border: 1px solid #b44;
  border-radius: 6px;
  padding: 12px;
  margin-top: 0;
  overflow: auto;
}

@media (max-width: 900px) {
  .workspace {
    flex-direction: column;
  }

  textarea,
  .preview {
    min-height: 420px;
  }
}