/* ===== BuildingClub Pro — Shared Calculator Styles ===== */
/* All calculators share this CSS. Calculator-specific styles go inline. */

/* --- Root container & CSS variables --- */
.bc-calc{--p:#1e40af;--pl:#3b82f6;--pb:#eff6ff;--bg:#f8fafc;--c:#fff;--b:#e2e8f0;--t:#0f172a;--t2:#64748b;--ok:#059669;--okb:#ecfdf5;--err:#dc2626;--r:10px;--sh:0 1px 3px rgba(0,0,0,.08);--d1:#2563eb;--d2:#7c3aed;--d3:#0891b2;--d4:#c026d3;color:var(--t);max-width:920px;margin:0 auto;padding:4px;line-height:1.5;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
.bc-calc *,.bc-calc *::before,.bc-calc *::after{box-sizing:border-box}

/* --- Hero --- */
.bc-hero{background:var(--c);border:1px solid var(--b);border-radius:var(--r);padding:16px 18px 14px;margin-bottom:12px;box-shadow:var(--sh)}
.bc-hero h1{font-size:clamp(1.02rem,2.5vw,1.25rem);font-weight:800;color:var(--t);margin:0 0 3px;line-height:1.3;letter-spacing:-.01em}
.bc-hero-sub{font-size:12px;color:var(--t2);font-weight:500;line-height:1.4;display:flex;align-items:center;gap:6px}
.bc-hero-sub span{display:inline-flex;align-items:center;gap:4px}
.bc-hero-badge{display:inline-flex;align-items:center;gap:4px;background:var(--pb);border:1px solid var(--b);border-radius:20px;padding:3px 8px;font-size:10px;color:var(--p);font-weight:600;margin-top:8px}
.bc-hero-badge svg{flex-shrink:0}

/* --- Collapsible description --- */
.bc-desc{background:var(--c);border:1px solid var(--b);border-radius:var(--r);padding:16px 20px;margin-bottom:12px;box-shadow:var(--sh);font-size:13px;color:var(--t2);line-height:1.7}
.bc-desc-toggle{display:flex;align-items:center;justify-content:space-between;cursor:pointer;user-select:none}
.bc-desc-toggle h2{font-size:13px;font-weight:700;color:var(--t);margin:0;display:flex;align-items:center;gap:6px}
.bc-desc-chevron{width:18px;height:18px;color:var(--t2);transition:transform .25s ease;flex-shrink:0}
.bc-desc-chevron.open{transform:rotate(180deg)}
.bc-desc-body{max-height:0;overflow:hidden;transition:max-height .35s ease,opacity .25s ease;opacity:0}
.bc-desc-body.open{max-height:600px;opacity:1;margin-top:12px;padding-top:12px;border-top:1px solid var(--b)}
.bc-desc-body p{margin:0 0 8px}
.bc-desc-body p:last-child{margin-bottom:0}
.bc-desc-body strong{color:var(--t);font-weight:600}
.bc-desc-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.bc-desc-chip{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;background:var(--pb);border-radius:6px;font-size:11px;font-weight:600;color:var(--p)}

/* --- Card --- */
.C{background:var(--c);border:1px solid var(--b);border-radius:var(--r);padding:18px;margin-bottom:12px;box-shadow:var(--sh)}
.CT{font-size:.93rem;font-weight:700;margin:0 0 12px;color:var(--t);display:flex;align-items:center;gap:7px}

/* --- Tabs --- */
.TBS{display:flex;gap:5px;margin-bottom:14px;flex-wrap:wrap}
.TB{flex:1;min-width:72px;padding:10px 6px;border:2px solid var(--b);border-radius:var(--r);background:var(--bg);cursor:pointer;text-align:center;font-size:12px;font-weight:700;color:var(--t2);transition:all .2s;display:flex;flex-direction:column;align-items:center;gap:3px}
.TB svg{width:26px;height:26px}
.TB:hover{border-color:var(--pl);color:var(--p)}
.TB.on{border-color:var(--p);background:var(--pb);color:var(--p)}

/* --- Input group --- */
.IG{margin-bottom:11px}
.IG>label{display:block;font-size:13px;font-weight:700;margin-bottom:4px}
.H{font-size:11px;color:var(--t2);margin-bottom:4px;line-height:1.4}

/* --- Flex input row --- */
.FI{display:flex;gap:5px;align-items:center;flex-wrap:wrap}
.FI span.u{font-size:12px;color:var(--t2);white-space:nowrap}
.FI input[type=number]{width:70px;height:48px;border:1px solid var(--b);border-radius:8px;padding:0 7px;font-size:16px;text-align:center;background:var(--bg);transition:border-color .15s}
.FI input:focus,.FI select:focus{outline:none;border-color:var(--pl);box-shadow:0 0 0 3px rgba(59,130,246,.12)}
.FI select{height:48px;border:1px solid var(--b);border-radius:8px;padding:0 6px;font-size:16px;background:var(--bg);cursor:pointer}
.FI select.mu{width:62px;font-size:14px;font-weight:600;padding:0 4px}

/* --- Slider row --- */
.SR{display:flex;align-items:center;gap:8px}
.SR input[type=range]{flex:1;height:44px;cursor:pointer;accent-color:var(--p);touch-action:none}
.SR input[type=number]{width:56px;height:48px;border:1px solid var(--b);border-radius:8px;padding:0 5px;font-size:16px;text-align:center;background:var(--bg)}
.SR input[type=number]:focus{outline:none;border-color:var(--pl);box-shadow:0 0 0 3px rgba(59,130,246,.12)}
.SR span{font-size:12px;color:var(--t2)}

/* --- SVG diagram container --- */
.SV{width:100%;overflow:hidden}
.SV svg{width:100%;height:auto;min-height:180px}

/* --- Optional section toggles --- */
.opt-toggles{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.opt-btn{display:flex;align-items:center;gap:6px;padding:10px 16px;border:2px solid var(--b);border-radius:var(--r);background:var(--bg);cursor:pointer;font-size:13px;font-weight:700;color:var(--t2);transition:all .2s}
.opt-btn:hover{border-color:var(--pl);color:var(--p)}
.opt-btn.on{border-color:var(--p);background:var(--pb);color:var(--p)}
.opt-btn svg{width:18px;height:18px;flex-shrink:0}
.opt-section{display:none;animation:bc-fadeIn .3s ease}
.opt-section.show{display:block}
@keyframes bc-fadeIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}

/* --- Price tabs & input --- */
.price-tabs{display:flex;gap:4px;margin-bottom:12px}
.price-tab{flex:1;padding:10px 8px;border:2px solid var(--b);border-radius:8px;background:var(--bg);cursor:pointer;text-align:center;font-size:12px;font-weight:700;color:var(--t2);transition:all .2s}
.price-tab:hover{border-color:var(--pl);color:var(--p)}
.price-tab.on{border-color:var(--p);background:var(--pb);color:var(--p)}
.price-input-row{display:flex;gap:8px;align-items:end;flex-wrap:wrap}
.price-input-row>div{flex:1;min-width:160px}
.price-input-row label{font-size:12px;font-weight:600;display:block;margin-bottom:3px}
.PI{display:flex;align-items:center}
.PI span.d{font-size:15px;font-weight:600;color:var(--t2);background:var(--bg);border:1px solid var(--b);border-right:none;border-radius:8px 0 0 8px;height:44px;display:flex;align-items:center;padding:0 8px}
.PI input{flex:1;height:44px;border:1px solid var(--b);border-radius:0 8px 8px 0;padding:0 8px;font-size:15px;background:var(--c);min-width:0}
.PI input:focus{outline:none;border-color:var(--pl);box-shadow:0 0 0 3px rgba(59,130,246,.12)}
.CN{font-size:10px;color:var(--t2);margin-top:2px}

/* --- Grid (rebar, inputs) --- */
.RG{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:8px}
.RG label{font-size:12px;font-weight:600;display:block;margin-bottom:3px}
.RG select,.RG input{width:100%;height:44px;border:1px solid var(--b);border-radius:8px;padding:0 8px;font-size:14px;background:var(--bg);cursor:pointer}
.RR{margin-top:10px;padding:12px;background:var(--bg);border-radius:8px;font-size:13px;line-height:1.7}
.RR strong{color:var(--p)}

/* --- Result section --- */
.RS{background:linear-gradient(135deg,#eff6ff 0%,#f0fdf4 100%);border:2px solid var(--p);border-radius:var(--r);padding:18px}
.RS .CT{color:var(--p)}
.RGR{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.RI{background:var(--c);border-radius:8px;padding:12px;text-align:center;border:1px solid var(--b)}
.RL{font-size:10px;color:var(--t2);text-transform:uppercase;letter-spacing:.5px;font-weight:600;margin-bottom:2px}
.RV{font-size:22px;font-weight:800;color:var(--p);line-height:1.2}
.RU{font-size:11px;color:var(--t2);margin-top:1px}
.RI.hl{border-color:var(--p);background:var(--pb)}

/* --- Cost result --- */
.cost-result{margin-top:10px;padding:14px;background:var(--c);border-radius:8px;border:1px solid var(--b);text-align:center}
.cost-label{font-size:11px;color:var(--t2);text-transform:uppercase;font-weight:600;letter-spacing:.4px}
.cost-value{font-size:28px;font-weight:800;color:var(--ok);margin:4px 0}
.cost-detail{font-size:12px;color:var(--t2)}

/* --- Rebar result --- */
.rebar-result{margin-top:10px;padding:12px;background:var(--c);border-radius:8px;border:1px solid var(--b);font-size:13px;line-height:1.6}
.rebar-result strong{color:var(--p)}
.rebar-cost{margin-top:6px;padding:8px;background:var(--c);border-radius:6px;border:1px solid var(--b);font-weight:600;color:var(--ok)}

/* --- Section label --- */
.sec-label{font-size:12px;font-weight:700;color:var(--t2);text-transform:uppercase;letter-spacing:.5px;margin:4px 0 6px;display:flex;align-items:center;gap:6px}

/* --- Export row --- */
.ER{display:flex;gap:6px;flex-wrap:wrap;margin-top:12px}
.EB{flex:1;min-width:65px;height:44px;border:1px solid var(--b);border-radius:8px;background:var(--c);cursor:pointer;font-size:12px;font-weight:700;color:var(--t);display:flex;align-items:center;justify-content:center;gap:4px;transition:all .15s}
.EB:hover{border-color:var(--p);color:var(--p);background:var(--pb)}
.EB:active{transform:scale(.97)}

/* --- Settings row --- */
.SET{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.SET label{font-size:12px;color:var(--t2);display:flex;align-items:center;gap:5px}
.SET select{height:32px;border:1px solid var(--b);border-radius:6px;padding:0 6px;font-size:12px;background:var(--c);cursor:pointer}

/* --- History --- */
.HH{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.HH h3{font-size:13px;font-weight:700;margin:0}
.HH button{font-size:11px;color:var(--err);background:none;border:none;cursor:pointer;text-decoration:underline;font-weight:600}
.HT{width:100%;border-collapse:collapse;font-size:12px}
.HT th,.HT td{padding:6px;border-bottom:1px solid var(--b);text-align:left}
.HT th{font-weight:700;color:var(--t2);font-size:10px;text-transform:uppercase;letter-spacing:.3px}
.HE{color:var(--t2);font-size:12px;font-style:italic;text-align:center;padding:14px}

/* --- Toast --- */
.TT{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--t);color:#fff;padding:8px 20px;border-radius:99px;font-size:13px;font-weight:600;z-index:9999;opacity:0;transition:opacity .3s;pointer-events:none}
.TT.show{opacity:1}

/* --- Submit button --- */
.SB{width:100%;height:48px;background:var(--p);color:#fff;border:none;border-radius:8px;font-size:15px;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:6px;transition:background .15s;margin-top:6px}
.SB:hover{background:#1e3a8a}
.SB:active{transform:scale(.98)}

/* --- SEO content block --- */
.bc-seo{background:var(--c);border:1px solid var(--b);border-radius:var(--r);padding:20px 22px;margin-bottom:12px;box-shadow:var(--sh);font-size:13px;color:var(--t2);line-height:1.7}
.bc-seo h2{font-size:16px;font-weight:800;color:var(--t);margin:0 0 8px;line-height:1.3}
.bc-seo h3{font-size:13px;font-weight:700;color:var(--t);margin:14px 0 4px}
.bc-seo p{margin:0 0 6px}
.bc-seo p:last-child{margin-bottom:0}

/* --- Responsive --- */
@media(max-width:600px){
.RGR,.RG{grid-template-columns:1fr}
.price-tabs{flex-direction:column}
.FI input[type=number]{flex:1;min-width:56px}
.FI select{flex:1;min-width:56px}
.SR{flex-wrap:wrap}.SR input[type=range]{width:100%;flex:none}
.ER{flex-direction:column}.EB{width:100%}
.SET{flex-direction:column;align-items:stretch}
.TBS{gap:3px}.TB{min-width:62px;padding:8px 4px;font-size:11px}
.opt-toggles{flex-direction:column}
.bc-hero{padding:14px 14px 12px}
.bc-hero h1{font-size:1rem}
}

/* --- Print --- */
@media print{
body{background:#fff!important}
.bc-calc{max-width:100%;padding:0}
.C{box-shadow:none;break-inside:avoid}
.bc-hero{box-shadow:none}
}