*{box-sizing:border-box;font-family:Inter, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC", sans-serif}
body{margin:0;background:#f6f7fb;color:#111}
.topbar{padding:14px 20px;background:#fff;border-bottom:1px solid #e6e9ef}
.editor-container{display:grid;grid-template-columns:260px 1fr 420px;gap:16px;max-width:1200px;margin:20px auto;padding:0 16px}
.left-panel{background:#fff;border:1px solid #e6e9ef;border-radius:8px;padding:12px}
.center-panel{background:#fff;border:1px solid #e6e9ef;border-radius:8px;padding:12px;display:flex;flex-direction:column}
.right-panel{background:#fff;border:1px solid #e6e9ef;border-radius:8px;padding:12px}

#sidebar{width:240px;min-width:240px;transition:width .25s ease, opacity .25s ease;}
.layout.sidebar-collapsed #sidebar{width:0;min-width:0;opacity:0;pointer-events:none;display:none;}
.layout.sidebar-collapsed .editor-main{width:100%;}

#sidebar .card{margin-top:0;margin-bottom:0;}

@media (max-width:1000px){
  .editor-container{grid-template-columns:1fr;grid-auto-rows:auto}
  .right-panel{order:3}
  .center-panel{order:2}
  .left-panel{order:1}
}.left-panel label, .center-panel label{display:block;margin-bottom:12px;font-size:13px;color:#374151}
.left-panel input,.center-panel input,select,textarea,#bodyInput{width:100%;padding:10px;border:1px solid #d8dde8;border-radius:6px}
.panel-head{font-weight:600;color:#111;margin-bottom:8px}
.vars-area{margin-top:6px}
#varsTable{width:100%;border-collapse:collapse;font-size:13px}
#varsTable th,#varsTable td{padding:8px;border-bottom:1px solid #f1f5f9;text-align:left}
.vars-actions{margin-top:8px;display:flex;gap:8px}
.btn{background:#fff;border:1px solid #d8dde8;padding:8px 10px;border-radius:6px;cursor:pointer}
.btn-ghost{background:transparent}
.primary{background:#2563eb;color:#fff;border:none;padding:9px 14px;border-radius:6px;cursor:pointer}
.editor-footer{max-width:1200px;margin:16px auto;padding:0 16px;display:flex;justify-content:space-between;align-items:center}
.left-actions{display:flex;gap:8px}
.right-actions{display:flex;gap:8px}
.hidden{display:none}
.modal{position:fixed;inset:0;background:rgba(2,6,23,0.5);display:flex;align-items:center;justify-content:center}
.modal.hidden{display:none !important}
.modal-inner{background:#fff;border-radius:8px;padding:16px;max-width:900px;width:90%;max-height:80%;overflow:auto}
.modal header{display:flex;justify-content:space-between;align-items:center;font-weight:600}
.preview-content{margin-top:12px}
.preview-content h4{background:#f8fafc;padding:10px;border-radius:6px}
.preview-content div{padding:12px;background:#fff;border:1px solid #eef2ff;border-radius:6px;margin-top:8px}
.close{background:transparent;border:none;cursor:pointer;font-size:16px}
@media (max-width:1000px){.editor-container{grid-template-columns:1fr;grid-auto-rows:auto}.right-panel{order:3}.center-panel{order:2}.left-panel{order:1}}
.mode-badge{display:inline-block;margin-bottom:10px;padding:6px 10px;border-radius:999px;background:#e0ecff;color:#1d4ed8;font-size:12px;font-weight:700}
.helper-text{margin:10px 0 0 0;color:#6b7280;font-size:13px;line-height:1.6}
.editor-tip-card{margin-top:14px;padding:12px 14px;border:1px solid #dbeafe;background:#f8fbff;border-radius:8px}
.editor-tip-card strong{display:block;margin-bottom:6px;color:#1d4ed8}
.editor-tip-card p{margin:0;color:#475569;font-size:13px;line-height:1.7}
.preview-content .preview-subject-card,.preview-content .preview-body-card{background:#f8fafc;padding:12px;border:1px solid #e8eef4;border-radius:8px;margin-top:10px}
.preview-content .preview-label{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:#64748b;font-weight:700;margin-bottom:8px}