/* BuildingClub Pro — beginner-first calculator experience. */
.bc-beginner-panel{max-width:920px;margin:0 auto 12px;background:#fff;border:2px solid #1e40af;border-radius:12px;padding:16px;box-shadow:0 8px 24px rgba(15,23,42,.08);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
.bc-beginner-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px}
.bc-beginner-head>div:first-child{display:flex;flex-direction:column;gap:3px}
.bc-beginner-head strong{font-size:17px;line-height:1.25;color:#0f172a}
.bc-beginner-head span{font-size:12px;line-height:1.45;color:#64748b;max-width:560px}
.bc-view-switch{display:flex;flex-shrink:0;padding:3px;background:#f1f5f9;border-radius:9px;border:1px solid #e2e8f0}
.bc-view-btn{border:0;background:transparent;color:#475569;font:700 12px/1 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;border-radius:7px;padding:9px 11px;cursor:pointer;white-space:nowrap}
.bc-view-btn.on{background:#fff;color:#1e40af;box-shadow:0 1px 3px rgba(15,23,42,.12)}
.bc-view-btn:focus-visible,.bc-primary-action:focus-visible,.bc-secondary-action:focus-visible{outline:3px solid rgba(59,130,246,.28);outline-offset:2px}
.bc-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:14px 0 10px}
.bc-steps span{display:flex;align-items:center;gap:7px;min-width:0;padding:8px 9px;border-radius:8px;background:#f8fafc;color:#475569;font-size:11px;font-weight:700;line-height:1.3}
.bc-steps b{display:grid;place-items:center;width:20px;height:20px;flex:0 0 20px;border-radius:50%;background:#dbeafe;color:#1e40af;font-size:11px}
.bc-quick-results{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.bc-quick-result{min-width:0;border:1px solid #bfdbfe;background:linear-gradient(180deg,#eff6ff,#fff);border-radius:10px;padding:10px 12px}
.bc-quick-result span{display:block;color:#64748b;font-size:10px;font-weight:800;line-height:1.25;text-transform:uppercase;letter-spacing:.04em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bc-quick-result strong{display:block;color:#1e40af;font-size:23px;line-height:1.15;margin-top:3px;overflow-wrap:anywhere}
.bc-quick-result small{display:block;color:#64748b;font-size:11px;min-height:1em;margin-top:1px}
.bc-quick-empty{grid-column:1/-1;padding:14px;border:1px dashed #cbd5e1;border-radius:9px;text-align:center;color:#64748b;font-size:13px}
.bc-beginner-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:11px}
.bc-primary-action,.bc-secondary-action{min-height:44px;border-radius:8px;padding:0 14px;font-size:12px;font-weight:800;cursor:pointer}
.bc-primary-action{border:1px solid #1e40af;background:#1e40af;color:#fff}
.bc-primary-action:hover{background:#1d4ed8}
.bc-secondary-action{border:1px solid #cbd5e1;background:#fff;color:#1e40af}
.bc-secondary-action:hover{border-color:#3b82f6;background:#eff6ff}
.bc-update-state{margin-left:auto;color:#64748b;font-size:11px;font-weight:600}
.bc-result-updated .bc-quick-result{animation:bc-result-flash .45s ease}
@keyframes bc-result-flash{0%{box-shadow:0 0 0 0 rgba(37,99,235,.28)}100%{box-shadow:0 0 0 7px rgba(37,99,235,0)}}
.bc-mode-basic .bc-beginner-advanced,.bc-mode-basic .bc-beginner-advanced-card{display:none!important}
.bc-beginner-advanced,.bc-beginner-advanced-card,.bc-calc .C{scroll-margin-top:12px}
.bc-inline-error{margin-top:5px;color:#b91c1c;font-size:11px;font-weight:700;line-height:1.35}
.bc-visual-card{border-color:#cbd5e1}
.bc-visual-note{margin:-2px 0 10px;padding:8px 10px;border-left:3px solid #2563eb;background:#eff6ff;color:#475569;font-size:11px;font-weight:700;line-height:1.4;border-radius:0 7px 7px 0}
.bc-visual-fallback{border-style:dashed}
.bc-input-result-map{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(180px,.7fr);align-items:stretch;gap:12px}
.bc-map-inputs{display:grid;gap:7px}
.bc-map-inputs>div,.bc-map-output{border:1px solid #e2e8f0;border-radius:8px;padding:9px 10px;background:#f8fafc;min-width:0}
.bc-map-inputs span,.bc-map-output span{display:block;color:#64748b;font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.035em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bc-map-inputs strong{display:block;color:#0f172a;font-size:13px;line-height:1.35;margin-top:2px;overflow-wrap:anywhere}
.bc-map-arrow{display:grid;place-items:center;color:#2563eb;font-size:28px;font-weight:900}
.bc-map-output{display:flex;flex-direction:column;justify-content:center;text-align:center;background:#eff6ff;border-color:#bfdbfe}
.bc-map-output strong{display:block;color:#1e40af;font-size:25px;line-height:1.2;margin-top:3px;overflow-wrap:anywhere}
.bc-map-output small{display:block;color:#64748b;font-size:11px;margin-top:2px}
.bc-calc .RV,.bc-calc .cost-value,.bc-calc .RR,.bc-calc .rebar-result{overflow-wrap:anywhere;word-break:break-word}
.bc-calc .HT{display:block;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;overscroll-behavior-inline:contain}
.bc-calc .HT th,.bc-calc .HT td{white-space:nowrap}
.bc-calc .TB,.bc-calc .opt-btn,.bc-calc .EB{min-height:44px}
.bc-calc img,.bc-calc svg{max-width:100%}
@media (max-width:720px){
  .bc-beginner-panel{padding:13px;border-radius:10px}
  .bc-beginner-head{flex-direction:column;gap:10px}
  .bc-view-switch{width:100%}
  .bc-view-btn{flex:1;min-height:40px}
  .bc-steps{grid-template-columns:1fr;gap:5px}
  .bc-steps span{padding:7px 8px}
  .bc-quick-results{grid-template-columns:1fr 1fr}
  .bc-quick-result:first-child:nth-last-child(1){grid-column:1/-1}
  .bc-update-state{width:100%;margin-left:0}
  .bc-input-result-map{grid-template-columns:1fr}
  .bc-map-arrow{transform:rotate(90deg);font-size:22px;min-height:20px}
  .bc-calc .ER{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
  .bc-calc .EB{min-width:0;width:100%}
}
@media (max-width:430px){
  .bc-beginner-head{gap:7px}
  .bc-beginner-head span{font-size:11px;line-height:1.35}
  .bc-steps{display:flex;gap:4px;margin:9px 0 8px}
  .bc-steps span{flex:1;justify-content:center;gap:4px;padding:6px 4px;text-align:center;font-size:9px;line-height:1.15}
  .bc-steps b{width:18px;height:18px;flex-basis:18px;font-size:10px}
  .bc-quick-results{grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}
  .bc-quick-result{padding:8px 9px}
  .bc-quick-result:nth-child(n+3){display:none}
  .bc-quick-result:only-child{grid-column:1/-1}
  .bc-quick-result span{font-size:8px}
  .bc-quick-result strong{font-size:20px}
  .bc-quick-result small{font-size:10px}
  .bc-beginner-actions{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-top:8px}
  .bc-primary-action,.bc-secondary-action{width:100%;min-height:42px;padding:0 8px;font-size:11px}
  .bc-update-state{display:none}
  .bc-calc .ER{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  .bc-result-updated .bc-quick-result{animation:none}
}