.stem-editor-shell{--stem-editor-min-height:16rem}.stem-editor-shell .stem-editor-fallback{min-height:var(--stem-editor-min-height)}.stem-editor-shell .jodit-container:not(.jodit_inline){overflow:hidden;border:1px solid var(--input);border-radius:var(--radius-2xl);background:color-mix(in srgb,var(--neutral-0) 88%,transparent);box-shadow:var(--shadow-elevation-xs)}.stem-editor-shell .jodit-workplace{background:transparent}.stem-editor-shell .jodit-status-bar,.stem-editor-shell .jodit-toolbar__box{border-color:color-mix(in srgb,var(--border) 70%,transparent);background:color-mix(in srgb,var(--neutral-0) 92%,transparent)}.stem-editor-shell .jodit-toolbar-button__button,.stem-editor-shell .jodit-toolbar-editor-collection_mode_horizontal .jodit-toolbar-button{border-radius:.75rem}.stem-editor-shell .jodit-wysiwyg{min-height:var(--stem-editor-min-height);padding:1rem;color:var(--foreground);background:transparent}.stem-editor-shell .jodit-placeholder{color:color-mix(in srgb,var(--muted-foreground) 88%,transparent)}.stem-editor-shell[data-disabled=true] .jodit-wysiwyg{background:color-mix(in srgb,var(--muted) 58%,transparent)}.stem-editor-shell .stem-chem,.stem-editor-shell .stem-math{display:inline;padding:0 2px;user-select:none;white-space:nowrap;cursor:default;border-radius:4px;transition:background .15s ease,outline-color .15s ease}.stem-editor-shell .stem-chem:hover,.stem-editor-shell .stem-math:hover{background:rgba(81,72,216,.08);outline:1px solid rgba(81,72,216,.24)}.stem-editor-shell .stem-math[data-display=block]{display:block;margin:.8em 0;padding:.4em;text-align:center}.stem-editor-shell .stem-chem-error,.stem-editor-shell .stem-math-error{padding:2px 4px;color:#dc2626;font-family:monospace;background:#fef2f2;border:1px solid #fecaca;border-radius:3px}.stem-editor-shell .stem-structure{display:inline-block;user-select:none;vertical-align:middle;cursor:default;border:1px solid transparent;border-radius:4px;transition:border-color .15s ease}.stem-editor-shell .stem-structure:hover{border-color:rgba(81,72,216,.28)}.stem-editor-shell .stem-structure svg{display:block;max-width:100%}.stem-chem-popup,.stem-math-popup{display:flex;flex-direction:column;gap:8px;min-width:380px;padding:12px;font-family:inherit}.stem-popup-row{display:flex;gap:6px;align-items:center}.stem-popup-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:4px}.stem-btn,.stem-mode-btn{padding:6px 14px;font-size:.9em;color:#374151;cursor:pointer;background:#fff;border:1px solid #d1d5db;border-radius:10px;transition:background .1s ease,border-color .1s ease,color .1s ease}.stem-btn:hover,.stem-mode-btn:hover{background:#f9fafb}.stem-btn--primary,.stem-mode-btn--active{color:#fff;background:var(--primary-600);border-color:var(--primary-600)}.stem-btn--primary:hover,.stem-mode-btn--active:hover{background:var(--primary-700)}.stem-example-chip{padding:2px 8px;font-size:.78em;color:#4b5563;cursor:pointer;background:#f9fafb;border:1px solid #e5e7eb;border-radius:999px;transition:background .1s ease,border-color .1s ease,color .1s ease}.stem-example-chip:hover{color:var(--primary-700);background:#ede9fe;border-color:#a5b4fc}.stem-examples{display:flex;flex-wrap:wrap;gap:6px}.stem-ce-label{font-family:monospace;font-size:.95em;color:#6b7280;white-space:nowrap}.stem-chem-input{flex:1;padding:6px 8px;font-size:1em;border:1px solid #d1d5db;border-radius:10px;outline:none;transition:border-color .15s ease,box-shadow .15s ease}.stem-chem-input:focus{border-color:#6366f1;box-shadow:0 0 0 2px rgba(99,102,241,.15)}.stem-chem-preview,.stem-math-preview{min-height:52px;padding:10px 12px;overflow-x:auto;text-align:center;background:#fafafa;border:1px solid #e5e7eb;border-radius:10px}