.markdown-preview-card {
  overflow: hidden;
}

.markdown-preview-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  min-height: 560px;
}

.markdown-editor,
.markdown-preview-pane {
  min-width: 0;
  padding: 22px;
}

.markdown-editor {
  border-right: 1px solid var(--gt-line);
  background: rgba(7, 17, 31, 0.38);
}

.markdown-preview-pane {
  background: rgba(248, 250, 252, 0.98);
  color: #172033;
}

.markdown-panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.markdown-panel-heading h2,
.markdown-panel-heading h3 {
  margin: 0;
  font-size: 1.05rem;
}

.markdown-panel-heading span,
.markdown-source-meta {
  color: var(--gt-subtle);
  font-size: 0.8rem;
}

.markdown-preview-pane .markdown-panel-heading span {
  color: #64748b;
}

.markdown-source {
  display: block;
  width: 100%;
  min-height: 390px;
  resize: vertical;
  margin-top: 12px;
  padding: 16px;
  border: 1px solid var(--gt-line-strong);
  border-radius: 14px;
  color: #dbeafe;
  background: #081522;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.88rem;
  line-height: 1.65;
}

.markdown-source:focus {
  outline: 3px solid rgba(56, 189, 248, 0.28);
  outline-offset: 2px;
  border-color: var(--gt-accent);
}

.markdown-file-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid var(--gt-line-strong);
  border-radius: 11px;
  color: var(--gt-text);
  background: rgba(15, 31, 51, 0.8);
  cursor: pointer;
  font-size: 0.86rem;
  font-weight: 700;
}

.markdown-file-label:hover,
.markdown-file-label:focus-within {
  border-color: var(--gt-accent);
  color: #e0f2fe;
}

.markdown-file-label input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.markdown-preview-output {
  min-height: 390px;
  overflow-wrap: anywhere;
}

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

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

.markdown-preview-output h1,
.markdown-preview-output h2,
.markdown-preview-output h3,
.markdown-preview-output h4,
.markdown-preview-output h5,
.markdown-preview-output h6 {
  margin: 1.35em 0 0.45em;
  color: #0f172a;
  line-height: 1.2;
}

.markdown-preview-output h1 { font-size: 2rem; }
.markdown-preview-output h2 { font-size: 1.55rem; }
.markdown-preview-output h3 { font-size: 1.25rem; }
.markdown-preview-output h4,
.markdown-preview-output h5,
.markdown-preview-output h6 { font-size: 1rem; }

.markdown-preview-output p,
.markdown-preview-output ul,
.markdown-preview-output ol,
.markdown-preview-output blockquote,
.markdown-preview-output table,
.markdown-preview-output pre,
.markdown-preview-output hr {
  margin: 0 0 1rem;
}

.markdown-preview-output ul,
.markdown-preview-output ol {
  padding-left: 1.45rem;
}

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

.markdown-preview-output blockquote {
  padding: 0.15rem 1rem;
  border-left: 4px solid #38bdf8;
  color: #475569;
  background: #e0f2fe;
}

.markdown-preview-output code {
  padding: 0.12em 0.34em;
  border-radius: 5px;
  color: #9f1239;
  background: #ffe4e6;
  font-size: 0.88em;
}

.markdown-preview-output pre {
  overflow: auto;
  padding: 14px;
  border-radius: 10px;
  color: #e2e8f0;
  background: #0f172a;
}

.markdown-preview-output pre code {
  padding: 0;
  color: inherit;
  background: transparent;
}

.markdown-preview-output a {
  color: #0369a1;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.markdown-preview-output hr {
  border: 0;
  border-top: 1px solid #cbd5e1;
}

.markdown-preview-output table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
}

.markdown-preview-output th,
.markdown-preview-output td {
  min-width: 110px;
  padding: 8px 10px;
  border: 1px solid #cbd5e1;
  text-align: left;
  vertical-align: top;
}

.markdown-preview-output th {
  color: #0f172a;
  background: #e2e8f0;
}

.markdown-preview-output .markdown-task {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.markdown-preview-output .markdown-task input {
  accent-color: #0284c7;
}

.markdown-status {
  min-height: 1.7em;
  margin: 10px 0 0;
  color: var(--gt-muted);
  font-size: 0.86rem;
}

.markdown-preview-pane .markdown-status {
  color: #475569;
}

@media (max-width: 820px) {
  .markdown-preview-layout {
    grid-template-columns: 1fr;
  }

  .markdown-editor {
    border-right: 0;
    border-bottom: 1px solid var(--gt-line);
  }

  .markdown-source,
  .markdown-preview-output {
    min-height: 300px;
  }
}

@media (max-width: 480px) {
  .markdown-editor,
  .markdown-preview-pane {
    padding: 16px;
  }

  .markdown-panel-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .markdown-source {
    min-height: 260px;
    font-size: 0.82rem;
  }
}