.react-studio-shell{margin:16px 0}
.rts{border:1px solid #d8e2ef;border-radius:12px;background:#f8fafc;overflow:hidden;font-family:Inter,Arial,sans-serif;color:#111827}
.rts *{box-sizing:border-box}
.rts-header{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;padding:16px 18px;background:#101828;color:#fff}
.rts-header h2{margin:0 0 4px;font-size:21px}
.rts-header p{margin:0;color:#cbd5e1;font-size:13px}
.rts-header-actions{display:flex;gap:8px;flex-wrap:wrap}
.rts-main{display:grid;grid-template-columns:minmax(280px,340px) 1fr;min-height:760px}
.rts-panel{border-right:1px solid #d8e2ef;background:#fff;overflow:auto;max-height:calc(100vh - 120px);position:sticky;top:0}
.rts-panel-section{padding:14px;border-bottom:1px solid #edf2f7}
.rts-panel-section h3{margin:0 0 10px;font-size:14px;color:#0f172a}
.rts-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.rts-field{display:flex;flex-direction:column;gap:4px;min-width:0}
.rts-field.full{grid-column:1/-1}
.rts-field label{font-size:11px;font-weight:800;color:#526174}
.rts-field input,.rts-field select,.rts-field textarea{width:100%;height:36px;border:1px solid #cbd5e1;border-radius:8px;background:#fff;padding:6px 8px;color:#0f172a}
.rts-field input[type=color]{padding:3px}
.rts-field textarea{height:92px;resize:vertical;font-family:"Courier New",monospace;font-size:12px}
.rts-btn-row{display:flex;gap:7px;flex-wrap:wrap}
.rts-btn{border:1px solid #cbd5e1;background:#fff;color:#0f172a;border-radius:8px;padding:8px 10px;font-weight:800;cursor:pointer;font-size:12px}
.rts-btn:hover{background:#f1f5f9}
.rts-btn.primary{background:#2563eb;color:#fff;border-color:#1d4ed8}
.rts-btn.danger{background:#dc2626;color:#fff;border-color:#b91c1c}
.rts-btn.active{background:#0f172a;color:#fff;border-color:#0f172a}
.rts-stage-wrap{background:#242424;padding:24px;overflow:auto}
.rts-stage{max-width:840px;margin:0 auto}
.rts-canvas{min-height:720px;background:#fff;border:1px solid #dbe3ee;border-radius:10px;padding:28px;box-shadow:0 16px 32px rgba(0,0,0,.25);outline:none;line-height:1.6}
.rts-canvas:focus{box-shadow:0 0 0 3px #60a5fa,0 16px 32px rgba(0,0,0,.25)}
.rts-source{display:none;width:100%;min-height:720px;border:1px solid #93c5fd;border-radius:10px;padding:18px;font-family:"Courier New",monospace;font-size:13px}
.rts-preview-title{font-weight:900;color:#fff;margin:18px 0 8px}
.rts-preview{background:#fff;border:1px solid #dbe3ee;border-radius:10px;min-height:180px;padding:20px;overflow:auto}
.rts-selected{outline:3px solid #2563eb!important;outline-offset:3px}
.rts-hoverable:hover{outline:2px dashed rgba(37,99,235,.55);outline-offset:3px}
.rts-logo-wrap,.rts-image-wrap{line-height:0}
.rts-empty-note{padding:10px;border-radius:8px;background:#f8fafc;color:#64748b;font-size:12px;border:1px dashed #cbd5e1}
@media(max-width:980px){
  .rts-main{grid-template-columns:1fr}
  .rts-panel{position:static;max-height:none;border-right:0;border-bottom:1px solid #d8e2ef}
  .rts-stage-wrap{padding:12px}
  .rts-canvas{min-height:520px;padding:16px}
}