.html-converter-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--sh);
  background: #fff;
  border: 1px solid var(--border);
  height: 540px;
}
.editor-panel {
  display: flex; flex-direction: column;
  border-right: 1px solid var(--border);
}
.editor-header, .preview-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px;
  background: linear-gradient(135deg, var(--p-llt), var(--p-lt));
  border-bottom: 1px solid rgba(105,56,239,.15);
  flex-shrink: 0;
}
.editor-title, .preview-title {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 700; color: var(--text);
}
.lang-badge {
  padding: 3px 10px; border-radius: 6px;
  font-size: 11px; font-weight: 800; letter-spacing: .5px;
}
.html-badge { background: #fff7ed; color: #c2410c; border: 1px solid #fed7aa; }
.pdf-badge { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }
.editor-actions, .preview-actions {
  display: flex; gap: 6px;
}
.editor-action-btn {
  display: flex; align-items: center; gap: 5px;
  padding: 6px 12px; border-radius: 7px;
  background: var(--bg2); border: 1px solid var(--border);
  font-size: 11.5px; font-weight: 600; color: var(--text2);
  cursor: pointer; font-family: 'Inter', sans-serif;
  transition: border-color .15s, color .15s;
}
.editor-action-btn:hover { border-color: var(--p); color: var(--p); }
.html-textarea {
  flex: 1; padding: 16px;
  border: none; outline: none; resize: none;
  font-family: 'Courier New', 'Monaco', monospace;
  font-size: 13px; line-height: 1.7; color: var(--text);
  background: #fafafa;
}
.html-textarea::placeholder { color: var(--text3); font-family: 'Inter', sans-serif; font-size: 12.5px; }
.convert-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  background: #fff; flex-shrink: 0;
}
.convert-info {
  display: flex; align-items: center; gap: 6px;
  font-size: 11.5px; color: var(--text3);
}
.convert-info svg { stroke: var(--text3); flex-shrink: 0; }
.pdf-convert-btn {
  display: flex; align-items: center; gap: 8px;
  background: var(--p); color: #fff; border: none;
  padding: 10px 22px; border-radius: var(--r);
  font-size: 13.5px; font-weight: 700; cursor: pointer;
  font-family: 'Inter', sans-serif;
  box-shadow: 0 3px 12px rgba(105,56,239,.35);
  transition: background .15s, transform .12s;
  white-space: nowrap;
}
.pdf-convert-btn:hover { background: var(--p-d); transform: translateY(-1px); }

.preview-panel { display: flex; flex-direction: column; }
.preview-iframe {
  flex: 1; border: none;
  background: #fff;
}

.pdf-options-bar {
  display: flex; gap: 20px; align-items: flex-end;
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--r); padding: 16px 20px;
  margin-top: 16px; flex-wrap: wrap;
  box-shadow: 0 1px 6px rgba(0,0,0,.04);
}
.pdf-option { display: flex; flex-direction: column; gap: 5px; }
.pdf-option label { font-size: 11.5px; font-weight: 600; color: var(--text2); }
.pdf-option select {
  padding: 8px 28px 8px 10px;
  border: 1.5px solid var(--border); border-radius: 8px;
  font-size: 13px; font-family: 'Inter', sans-serif; color: var(--text);
  background: #fff; cursor: pointer; outline: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23667085' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 8px center;
  transition: border-color .18s;
}
.pdf-option select:focus { border-color: var(--p); box-shadow: 0 0 0 3px rgba(105,56,239,.1); }

@media (max-width: 768px) {
  .html-converter-card { grid-template-columns: 1fr; height: auto; }
  .editor-panel { border-right: none; border-bottom: 1px solid var(--border); }
  .html-textarea { height: 280px; }
  .preview-iframe { height: 280px; }
  .pdf-options-bar { gap: 12px; }
}