:root{
  --bg:#eef1f5;
  --panel:#ffffff;
  --ink:#111827;
  --muted:#6b7280;
  --line:#d7dce4;
  --blue:#2563eb;
  --blue2:#1d4ed8;
  --danger:#b91c1c;
  --shadow:0 8px 28px rgba(15,23,42,.10);
  --radius:14px;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;color:var(--ink);background:var(--bg)}
button,input,select,textarea{font:inherit}
button{touch-action:manipulation}
.app-header{position:sticky;top:0;z-index:100;display:flex;align-items:center;gap:18px;padding:10px 16px;background:#111827;color:white;box-shadow:0 2px 12px rgba(0,0,0,.22)}
.brand{display:flex;align-items:center;gap:10px;min-width:max-content}.brand-mark{display:grid;place-items:center;width:46px;height:34px;border-radius:9px;background:white;color:#111827;font-weight:900;font-size:13px;letter-spacing:.5px}.brand-title{font-weight:800}.brand-subtitle{font-size:11px;color:#cbd5e1;margin-top:1px}
.top-tabs{display:flex;gap:4px;margin-left:14px}.tab-button{border:0;background:transparent;color:#cbd5e1;padding:9px 12px;border-radius:9px;font-weight:700;cursor:pointer}.tab-button.active{background:#263244;color:white}.header-actions{display:flex;gap:8px;margin-left:auto}
.page{display:none}.page.active{display:block}
.button{border:1px solid transparent;border-radius:9px;padding:9px 13px;font-weight:750;cursor:pointer}.button.primary{background:var(--blue);color:white}.button.primary:hover{background:var(--blue2)}.button.secondary{background:white;border-color:#cbd5e1;color:#111827}.app-header .button.secondary{background:#1f2937;color:white;border-color:#475569}.button.ghost{background:transparent;border-color:#cbd5e1;color:#374151}.button.danger{background:#fff1f2;color:var(--danger);border-color:#fecdd3}.button.full{width:100%}
.editor-layout{display:grid;grid-template-columns:150px minmax(520px,1fr) 310px;min-height:calc(100vh - 58px)}
.tool-panel,.inspector-panel{background:var(--panel);padding:14px;border-right:1px solid var(--line);position:sticky;top:58px;height:calc(100vh - 58px);overflow:auto}.inspector-panel{border-right:0;border-left:1px solid var(--line)}
.panel-title{font-weight:850;font-size:14px;margin-bottom:10px}.small-title{font-size:13px}.tool-button{width:100%;display:flex;align-items:center;gap:9px;border:0;background:transparent;border-radius:9px;padding:10px 8px;margin:2px 0;text-align:left;cursor:pointer;color:#1f2937}.tool-button:hover{background:#f3f4f6}.tool-button span{width:26px;height:26px;border:1px solid #d1d5db;border-radius:7px;display:grid;place-items:center;background:white;font-weight:850;font-size:12px}.tool-button b{font-size:12px}.tool-button.small{padding:8px}.tool-button.danger{color:var(--danger)}.tool-separator,.panel-divider{height:1px;background:var(--line);margin:10px 0}
.workspace-column{min-width:0}.workspace-toolbar{display:flex;align-items:end;gap:8px;position:sticky;top:58px;z-index:20;background:rgba(238,241,245,.95);backdrop-filter:blur(8px);padding:10px 14px;border-bottom:1px solid var(--line)}.workspace-info{display:flex;gap:12px;margin-left:auto;color:#64748b;font-size:12px;align-items:center;flex-wrap:wrap}.workspace-scroll{padding:24px;overflow:auto;min-height:calc(100vh - 118px)}
.paper-shell{position:relative;width:456px;margin:0 auto 60px auto;background:white;box-shadow:var(--shadow);border:1px solid #aeb6c2}.canvas-container{position:absolute!important;left:0;top:0}.no-print-zone{position:absolute;top:0;bottom:0;background:repeating-linear-gradient(135deg,rgba(148,163,184,.16),rgba(148,163,184,.16) 7px,rgba(203,213,225,.09) 7px,rgba(203,213,225,.09) 14px);pointer-events:none;z-index:5;overflow:hidden;color:#94a3b8;font-size:9px;text-transform:uppercase;letter-spacing:.7px}.no-print-zone.left{left:0}.no-print-zone.right{right:0}.no-print-zone span{position:sticky;top:12px;display:block;writing-mode:vertical-rl;padding:6px 3px}.print-guide{position:absolute;top:0;bottom:0;width:1px;background:rgba(37,99,235,.45);z-index:6;pointer-events:none}.print-guide.left{left:36px}.print-guide.right{right:36px}
.field{margin:10px 0}.field label{display:block;font-size:11px;font-weight:750;color:#475569;margin-bottom:5px}.field input,.field select,.field textarea,select,input,textarea{border:1px solid #cbd5e1;border-radius:8px;padding:8px 9px;background:white;color:#111827;max-width:100%}.field input,.field select{width:100%}.inline-input{display:flex;align-items:center;border:1px solid #cbd5e1;border-radius:8px;overflow:hidden;background:white}.inline-input input{border:0;border-radius:0;min-width:0}.inline-input span{padding:0 8px;color:#64748b;font-size:12px}.compact{margin:0}.compact label{margin-bottom:3px}.compact .inline-input{width:112px}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:10px}.button-row{display:flex;gap:6px}.button-row.wrap{flex-wrap:wrap}.toggle-button{border:1px solid #cbd5e1;background:white;border-radius:8px;padding:7px 9px;cursor:pointer;min-width:38px}.toggle-button.active{background:#dbeafe;border-color:#60a5fa;color:#1d4ed8}.readonly-pill{background:#f3f4f6;border:1px solid #e5e7eb;border-radius:8px;padding:8px 9px;font-size:12px}.switch-row{display:flex!important;align-items:center;gap:6px;border:1px solid #dbe1e8;border-radius:8px;padding:8px;background:#f8fafc;font-weight:650!important;color:#334155!important}.switch-row input{width:auto!important}.help-text,.muted{color:var(--muted);font-size:12px}.empty-state{border:1px dashed #cbd5e1;border-radius:10px;padding:20px 12px;text-align:center;color:#94a3b8;font-size:12px}.hidden{display:none!important}
.notice{margin-top:12px;padding:10px 11px;border-radius:10px;background:#eff6ff;border:1px solid #bfdbfe;color:#1e3a8a;font-size:12px;line-height:1.45}.notice.subtle{background:#f8fafc;border-color:#e2e8f0;color:#475569}
.settings-grid{display:grid;grid-template-columns:repeat(2,minmax(320px,1fr));gap:16px;padding:22px;max-width:1100px;margin:auto}.settings-card{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:0 3px 14px rgba(15,23,42,.05)}.settings-card h2{font-size:17px;margin:0 0 14px}.status-line{display:flex;align-items:center;gap:10px;margin-bottom:14px}.status-dot{width:11px;height:11px;border-radius:50%;background:#9ca3af}.status-dot.online{background:#16a34a;box-shadow:0 0 0 4px #dcfce7}.status-dot.offline{background:#ef4444;box-shadow:0 0 0 4px #fee2e2}.spec-row{display:flex;justify-content:space-between;border-bottom:1px solid #edf0f4;padding:9px 0;font-size:13px}
dialog{border:0;border-radius:14px;padding:0;box-shadow:0 20px 70px rgba(15,23,42,.28);max-width:min(92vw,560px)}dialog::backdrop{background:rgba(15,23,42,.55)}.dialog-card{padding:18px;min-width:min(86vw,420px)}.dialog-card.wide{width:min(92vw,760px)}.dialog-card h3{margin:0 0 14px}.dialog-card label{display:block;font-size:12px;font-weight:750;margin:10px 0 5px}.dialog-card input,.dialog-card select,.dialog-card textarea{width:100%}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}.dialog-head{display:flex;justify-content:space-between;gap:12px}.icon-button{border:0;background:#f3f4f6;width:34px;height:34px;border-radius:50%;font-size:24px;cursor:pointer}.preview-scroll{max-height:70vh;overflow:auto;background:#dfe4ea;padding:18px;border-radius:10px}.preview-scroll canvas{display:block;margin:auto;background:white;image-rendering:pixelated;box-shadow:0 2px 12px rgba(0,0,0,.12)}
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);background:#111827;color:white;border-radius:10px;padding:10px 14px;opacity:0;pointer-events:none;transition:.2s;z-index:9999;box-shadow:var(--shadow);font-size:13px}.toast.show{opacity:1;transform:translate(-50%,0)}.toast.error{background:#991b1b}.toast.success{background:#166534}
@media(max-width:1050px){.editor-layout{grid-template-columns:120px minmax(500px,1fr) 260px}.workspace-info{display:none}.tool-button b{font-size:11px}}
@media(max-width:820px){.app-header{flex-wrap:wrap}.top-tabs{order:3;width:100%;margin-left:0}.editor-layout{display:block}.tool-panel{position:sticky;top:100px;height:auto;z-index:30;display:flex;overflow-x:auto;border-right:0;border-bottom:1px solid var(--line);padding:7px}.tool-panel .panel-title,.tool-separator{display:none}.tool-button{width:auto;min-width:82px;flex-direction:column;gap:3px}.inspector-panel{position:relative;top:auto;height:auto;border-left:0;border-top:1px solid var(--line)}.workspace-toolbar{top:100px;overflow-x:auto}.workspace-scroll{padding:14px}.settings-grid{grid-template-columns:1fr;padding:14px}.header-actions{margin-left:auto}}