/* Shared CSS for split-pane sandbox tools */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 14px;
  color: #e8eaed;
  background: #0d1117;
}

.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: #161b22;
  border-bottom: 1px solid #30363d;
  flex-shrink: 0;
  flex-wrap: wrap;
}

.tool-nav { margin: 0; font-size: 12px; }
.tool-nav a { color: #58a6ff; text-decoration: none; }
.tool-nav a:hover { color: #79c0ff; text-decoration: underline; }

.toolbar-title { font-size: 14px; font-weight: 600; color: #f0f6fc; margin: 0 8px; }
.toolbar-sub   { font-size: 11px; color: #8b949e; }

.split-pane {
  display: flex;
  flex: 1;
  min-height: 0;
}

.editor-pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  border-right: 1px solid #30363d;
  min-width: 0;
}

.editor-pane--secondary {
  border-right: 1px solid #30363d;
}

.pane-label {
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #8b949e;
  background: #161b22;
  border-bottom: 1px solid #30363d;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pane-label select, .pane-label button {
  padding: 2px 8px;
  background: #21262d;
  border: 1px solid #30363d;
  border-radius: 4px;
  color: #c9d1d9;
  font-size: 11px;
  cursor: pointer;
}

.pane-label button:hover { background: #30363d; color: #f0f6fc; }
.pane-label button.run-btn { background: #1f4b2c; border-color: #3fb950; color: #3fb950; }
.pane-label button.run-btn:hover { background: #266935; }

.code-editor {
  flex: 1;
  resize: none;
  border: none;
  outline: none;
  padding: 12px;
  font-family: "SF Mono", "Cascadia Code", "Consolas", "Courier New", monospace;
  font-size: 13px;
  line-height: 1.6;
  background: #0d1117;
  color: #e6edf3;
  tab-size: 2;
  min-height: 0;
  overflow: auto;
}

.code-editor::placeholder { color: #30363d; }

.preview-pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.preview-iframe {
  flex: 1;
  border: none;
  background: #fff;
}

.console-pane {
  flex: 1;
  overflow: auto;
  background: #0d1117;
  padding: 10px 12px;
  font-family: "SF Mono", "Cascadia Code", "Consolas", monospace;
  font-size: 12px;
  line-height: 1.7;
}

.console-pane .log  { color: #c9d1d9; }
.console-pane .warn { color: #d29922; }
.console-pane .error { color: #f85149; }
.console-pane .info  { color: #58a6ff; }

@media (max-width: 700px) {
  .split-pane { flex-direction: column; }
  .editor-pane, .editor-pane--secondary { border-right: none; border-bottom: 1px solid #30363d; }
}