body {
  height: 100vh;
  box-sizing: border-box;
  margin: 0;
}

h1 {
  margin-top: 0;
  margin-bottom: 0.25rem;
}

.page-container {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: auto 2rem 1fr 2rem;
  width: 100%;
  height: 100%;
}

.panel {
  padding: 0.25rem;

  /* Establishing minimum sizes here causes the codemirror CSS to work */
  min-height: 0;
  min-width: 0;
  overflow-y: scroll;
  border-left: 1px solid;
  border-right: 1px solid;
  border-bottom: 1px solid;
}

.panel-top {
  padding: 0.5rem;
  border-bottom: 1px dashed;
  border-right: 1px solid;
  border-left: 1px solid;
  border-top: 1px solid;
}

.page-title {
  grid-column: 1 / 4;
  grid-row: 1;
  padding: 0.5rem;
}

.grammar-title {
  grid-column: 1;
  grid-row: 2;
}

.grammar-container {
  grid-column: 1;
  grid-row: 3;
}

.input-title {
  grid-column: 2;
  grid-row: 2;
}

.input-container {
  grid-column: 2;
  grid-row: 3;
}

.result-selector {
  position: relative;
  grid-column: 3;
  grid-row: 2;
}

.result-selector-buttons {
  position: absolute;
  top: 0.25rem;
  right: 1rem;
}

.results-container {
  grid-column: 3;
  grid-row: 3;
}

.status {
  grid-column: 1 / 4;
  grid-row: 4;
  padding: 0.25rem;
  border: 1px solid;
}

.parsed-node {
  margin-left: 1rem;
}

.parsed-error-node {
  color: red;
}

.error-panel {
  margin: 1rem;
}

.main-textarea {
  height: 100%;
  width: 100%;
}

.hidden {
  display: none;
}

.CodeMirror {
  height: 100%;
}