textarea {
  width: 100%;
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-medium);
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  font: inherit;
  font-size: 0.9375rem;
  padding: 14px 16px;
  resize: vertical;
  min-height: 220px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

textarea:focus {
  border-color: var(--md-sys-color-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--md-sys-color-primary) 22%, transparent);
}

.preview-output {
  width: 100%;
  min-height: 220px;
  padding: 20px;
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-medium);
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  overflow-wrap: anywhere;
}

.preview-output > *:first-child {
  margin-top: 0;
}

.preview-output > *:last-child {
  margin-bottom: 0;
}

.preview-output h1,
.preview-output h2,
.preview-output h3,
.preview-output h4,
.preview-output h5,
.preview-output h6 {
  margin: 1.4em 0 0.65em;
  line-height: 1.3;
  font-weight: 700;
}

.preview-output h1 {
  font-size: 1.9rem;
}

.preview-output h2 {
  font-size: 1.55rem;
}

.preview-output h3 {
  font-size: 1.3rem;
}

.preview-output h4 {
  font-size: 1.1rem;
}

.preview-output p {
  margin: 0 0 1em;
  line-height: 1.8;
}

.preview-output ul,
.preview-output ol {
  margin: 0 0 1em 1.4em;
  padding: 0;
}

.preview-output li + li {
  margin-top: 0.35em;
}

.preview-output blockquote {
  margin: 0 0 1em;
  padding: 12px 16px;
  border-left: 4px solid var(--md-sys-color-primary);
  background: color-mix(in srgb, var(--md-sys-color-primary-container) 70%, white);
  color: var(--md-sys-color-on-surface-variant);
  border-radius: 0 var(--md-sys-shape-corner-medium) var(--md-sys-shape-corner-medium) 0;
}

.preview-output code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.875em;
  background: color-mix(in srgb, var(--md-sys-color-primary-container) 50%, white);
  color: var(--md-sys-color-on-primary-container);
  padding: 0.15em 0.4em;
  border-radius: 8px;
}

.preview-output pre {
  margin: 0 0 1em;
  padding: 16px;
  overflow-x: auto;
  border-radius: var(--md-sys-shape-corner-medium);
  background: #0f172a;
  color: #e2e8f0;
}

.preview-output pre code {
  background: transparent;
  color: inherit;
  padding: 0;
  border-radius: 0;
  font-size: 0.9rem;
  line-height: 1.6;
}

.preview-output a {
  color: var(--md-sys-color-primary);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.preview-output hr {
  border: 0;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  margin: 1.5em 0;
}

.preview-output table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1em;
  display: block;
  overflow-x: auto;
}

.preview-output th,
.preview-output td {
  border: 1px solid var(--md-sys-color-outline-variant);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
  background: var(--md-sys-color-surface);
  white-space: nowrap;
}

.preview-output th {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  font-weight: 700;
}

.preview-output img {
  max-width: 100%;
  height: auto;
  border-radius: var(--md-sys-shape-corner-medium);
}

@media (max-width: 600px) {
  .preview-output {
    padding: 16px;
  }}