:root{
  --bg:#14171b; --bg2:#1c2026; --card:#232830; --card2:#2a3039; --line:#363e49; --line2:#46505d;
  --text:#e8ecf0; --muted:#9aa6b2; --steel:#c9d2dc; --accent:#e0a93b; --accent2:#f0bc55; --ok:#4fb37a; --err:#e06a5b;
  --r:14px; --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:linear-gradient(180deg,var(--bg2),var(--bg) 420px);color:var(--text);font:16px/1.5 var(--font);padding-bottom:84px}
.wrap{max-width:1040px;margin:0 auto;padding:0 18px}
a{color:var(--accent2)}
code{background:var(--card2);padding:1px 5px;border-radius:5px;font-size:.9em}
h1,h2,h3{line-height:1.2;margin:0}
.muted{color:var(--muted)} .small{font-size:.87rem} .center{text-align:center} .num{text-align:right}
.opt{font-weight:400;color:var(--muted);font-size:.8em;text-transform:none;letter-spacing:0}

.site-header{position:sticky;top:0;z-index:20;background:rgba(20,23,27,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:12px}
.logo{width:38px;height:38px}
.brand-name{display:block;font-weight:800;letter-spacing:.06em;text-transform:uppercase;font-size:1.02rem}
.brand-sub{display:block;color:var(--muted);font-size:.82rem;margin-top:-2px}
.saved{font-size:.8rem;color:var(--ok);opacity:0;transition:opacity .3s}
.saved.show{opacity:1}

.hero{padding:34px 0 18px}
.hero h1{font-size:clamp(1.7rem,4.5vw,2.5rem);letter-spacing:-.01em}
.hero p{color:#c4ccd5;max-width:720px;font-size:1.05rem}
.steps{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:16px 0 0;counter-reset:s}
.steps li{counter-increment:s;background:var(--card);border:1px solid var(--line);border-radius:999px;padding:5px 12px 5px 6px;font-size:.88rem;color:var(--steel)}
.steps li::before{content:counter(s);display:inline-grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--accent);color:#1b1b1b;font-weight:700;margin-right:7px;font-size:.8rem}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;margin:18px 0;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.card-head{display:flex;gap:14px;align-items:flex-start;margin-bottom:18px}
.card-head p{margin:4px 0 0;color:var(--muted)}
.card-head h2{font-size:1.35rem}
.step-num{flex:none;width:34px;height:34px;border-radius:10px;background:var(--accent);color:#1b1b1b;font-weight:800;display:grid;place-items:center}

.how{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:22px;align-items:center;background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:18px}
.diagram{width:100%;height:auto}
.d-lbl{fill:var(--muted);font:700 12px var(--font);letter-spacing:.12em}
.d-key{fill:var(--accent2);font:700 13px var(--font)}
.d-small{fill:#fff;font:700 12px var(--font)}
.how-text h3{font-size:1.02rem;margin-bottom:6px}
.how-text ul{margin:0;padding-left:18px;color:#c4ccd5;font-size:.93rem}
.how-text li{margin:5px 0}

label{display:block}
.lbl{display:block;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:5px}
.lbl em{text-transform:none;font-style:normal;font-weight:500;letter-spacing:0}
input,select,textarea{width:100%;font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--line2);border-radius:10px;padding:11px 12px;min-height:46px;outline:none;transition:border-color .15s,box-shadow .15s}
input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(224,169,59,.22)}
input[type=file]{padding:9px;background:var(--card2)}
textarea{resize:vertical}
select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 18px) 50%,calc(100% - 13px) 50%;background-size:5px 5px;background-repeat:no-repeat;padding-right:34px}
.unit{display:flex;align-items:center;background:var(--bg);border:1px solid var(--line2);border-radius:10px;overflow:hidden}
.unit:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(224,169,59,.22)}
.unit input{border:0;border-radius:0;box-shadow:none!important;min-width:0}
.unit span{padding:0 11px;color:var(--muted);font-size:.9rem;white-space:nowrap}
.unit.price span:first-child{padding-right:0}

.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:14px}
.span2{grid-column:span 2}
.dim-row{display:grid;grid-template-columns:1.3fr 1fr;gap:8px}

.surface{background:var(--card2);border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:14px}
.surface-head{display:flex;gap:12px;align-items:flex-end}
.surface-num{flex:none;width:30px;height:46px;display:grid;place-items:center;font-weight:800;color:var(--accent)}
.grow{flex:1}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0}
.chip{font:inherit;font-size:.82rem;color:var(--steel);background:transparent;border:1px solid var(--line2);border-radius:999px;padding:5px 11px;cursor:pointer}
.chip:hover{border-color:var(--steel)}
.chip.on{background:var(--steel);color:#16191d;border-color:var(--steel);font-weight:600}
.seg{display:inline-flex;background:var(--bg);border:1px solid var(--line2);border-radius:10px;padding:3px;margin-bottom:12px}
.seg button{font:inherit;font-size:.88rem;color:var(--muted);background:none;border:0;border-radius:8px;padding:7px 12px;cursor:pointer}
.seg button.on{background:var(--card);color:var(--text);box-shadow:0 1px 3px rgba(0,0,0,.4)}
.extra{margin-top:10px}
.extra summary{cursor:pointer;color:var(--muted);font-size:.88rem}
.small-field{max-width:280px;margin-top:8px}
.surface-result{margin-top:12px;padding:10px 12px;background:var(--bg);border-left:3px solid var(--accent);border-radius:8px;font-size:.95rem}
.surface-result .muted{font-size:.85rem}
.pill{display:inline-block;background:rgba(224,169,59,.16);color:var(--accent2);border-radius:999px;padding:1px 9px;font-size:.82rem;font-weight:600;margin-left:4px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font:inherit;font-weight:650;color:var(--text);background:var(--card2);border:1px solid var(--line2);border-radius:10px;padding:12px 18px;min-height:46px;cursor:pointer;text-decoration:none;transition:background .15s,transform .05s}
.btn:hover{background:#333a44}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);border-color:var(--accent);color:#17140d}
.btn-primary:hover{background:var(--accent2)}
.btn-ghost{background:transparent;border-style:dashed;width:100%;color:var(--steel)}
.btn-sm{min-height:40px;padding:8px 14px}
.btn:disabled{opacity:.6;cursor:default}
.icon-btn{flex:none;width:46px;height:46px;border-radius:10px;border:1px solid var(--line2);background:transparent;color:var(--muted);cursor:pointer;font-size:1rem}
.icon-btn.danger:hover{color:var(--err);border-color:var(--err)}
.link-btn{background:none;border:0;padding:4px 0;color:var(--accent2);font:inherit;font-size:.85rem;cursor:pointer;text-decoration:underline}
.link-btn.danger{color:var(--muted);margin-top:8px}
.link-btn.danger:hover{color:var(--err)}

.sub-card{margin-top:20px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.sub-head{display:flex;justify-content:space-between;align-items:baseline;gap:10px;flex-wrap:wrap;padding:14px 16px;background:var(--bg2);border-bottom:1px solid var(--line)}
.sub-head .muted{font-size:.85rem}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse}
.cutlist th,.cutlist td{padding:10px 16px;border-bottom:1px solid var(--line);text-align:left}
.cutlist th{font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.cutlist th.num,.cutlist td.num{text-align:right}
.cutlist td.qty{font-weight:800;color:var(--accent2);font-size:1.05rem}
.cutlist tfoot td{font-weight:800;border-bottom:0;background:var(--bg2)}
.price-row{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap;padding:16px;background:var(--card2)}
.price-field .unit{max-width:220px}
.subtotal{text-align:right}
.subtotal strong{display:block;font-size:1.6rem}
.subtotal small{display:block}

.fl-head,.fl-row{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,.8fr) minmax(0,.9fr) 100px;gap:10px;align-items:center}
.fl-head{padding:0 10px 8px;font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700}
.fl-row{padding:8px 10px;border-top:1px solid var(--line)}
.fl-row.has{background:rgba(224,169,59,.06)}
.fl-name strong{display:block;font-weight:600}
.fl-name small{display:block;color:var(--muted);font-size:.8rem}
.fl-cost{text-align:right;font-weight:700;display:flex;justify-content:flex-end;align-items:center;gap:8px}
.fl-row .unit input{padding:9px 6px 9px 10px;min-height:42px}
.fl-row .unit span{padding:0 8px}
.custom .icon-btn{width:38px;height:38px}
#add-custom-flashing{margin-top:12px}
.fl-total{display:flex;justify-content:space-between;align-items:center;margin-top:14px;padding:14px 16px;background:var(--bg2);border-radius:10px;font-size:1.05rem}
.fl-total strong:last-child{font-size:1.3rem}

#customer-section > label{margin-bottom:14px}
.upload{margin-top:4px}
.upload p{margin:6px 0}
.photo-list{list-style:none;padding:0;margin:8px 0 0;display:flex;flex-wrap:wrap;gap:10px}
.photo-list li{display:flex;align-items:center;gap:8px;background:var(--card2);border:1px solid var(--line);border-radius:10px;padding:6px 10px 6px 6px;font-size:.85rem;max-width:100%}
.photo-list img{width:44px;height:44px;object-fit:cover;border-radius:6px}
.photo-list .doc{font-size:1.6rem}

.summary{border-color:var(--accent);}
.totals{margin:0;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.totals div{display:flex;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--line)}
.totals dt{color:#c4ccd5} .totals dd{margin:0;font-weight:700;font-variant-numeric:tabular-nums}
.totals .grand{background:var(--bg2);border-bottom:0}
.totals .grand dt{font-weight:800;color:var(--text)} .totals .grand dd{font-size:1.6rem;color:var(--accent2)}
.disclaimer{background:rgba(224,169,59,.1);border:1px solid rgba(224,169,59,.35);border-radius:10px;padding:12px 14px;color:#e9dcc0;font-size:.93rem}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0 8px}

.bottom-bar{position:fixed;left:0;right:0;bottom:0;z-index:30;display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 18px calc(10px + env(safe-area-inset-bottom));background:rgba(28,32,38,.96);backdrop-filter:blur(8px);border-top:1px solid var(--line)}
.bottom-bar small{display:block;color:var(--muted);font-size:.78rem}
.bottom-bar strong{font-size:1.25rem}
@media (min-width:1100px){.bottom-bar{left:auto;right:20px;bottom:20px;border:1px solid var(--line);border-radius:14px;min-width:340px}}

.site-footer{color:var(--muted);font-size:.85rem;padding:18px;text-align:center}
.toast{position:fixed;left:50%;bottom:90px;transform:translate(-50%,20px);background:#0e1013;border:1px solid var(--line2);color:var(--text);padding:12px 16px;border-radius:10px;opacity:0;pointer-events:none;transition:.25s;z-index:50;max-width:92vw;box-shadow:0 10px 30px rgba(0,0,0,.4)}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.err{border-color:var(--err)} .toast.ok{border-color:var(--ok)}
.print-only{display:none}

@media (max-width:760px){
  .how{grid-template-columns:1fr}
  .grid3{grid-template-columns:1fr}
  .span2{grid-column:auto}
  .card{padding:16px;border-radius:12px}
  .wrap{padding:0 12px}
  .hide-sm{display:none}
  .fl-head{display:none}
  .fl-row{grid-template-columns:1fr 1fr;grid-template-areas:"n n" "l p" "c c";padding:12px 4px}
  .fl-name{grid-area:n} .fl-row>.unit:nth-child(2){grid-area:l} .fl-row>.unit.price{grid-area:p} .fl-cost{grid-area:c}
  .cutlist th,.cutlist td{padding:9px 10px}
  .subtotal{text-align:left}
  .actions .btn{flex:1 1 100%}
  .brand-sub{font-size:.75rem}
  .saved{display:none}
}
@media (max-width:480px){
  .grid2{grid-template-columns:1fr}
}

@media print{
  @page{margin:14mm}
  body{background:#fff;color:#111;padding:0;font-size:11pt}
  .site-header,main,.bottom-bar,.site-footer,.toast{display:none!important}
  .print-only{display:block!important}
  #print-summary h1{font-size:18pt;margin:0}
  #print-summary h3{font-size:11pt;text-transform:uppercase;letter-spacing:.05em;margin:16px 0 6px;color:#333}
  .p-head{display:flex;justify-content:space-between;border-bottom:3px solid #222;padding-bottom:8px}
  .p-head p{margin:2px 0 0;color:#555}
  .p-right{text-align:right;font-size:10pt;color:#444}
  .p-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
  .p-grid p{margin:0;font-size:10pt}
  #print-summary table{width:100%;border-collapse:collapse;font-size:10pt}
  #print-summary th,#print-summary td{border-bottom:1px solid #ccc;padding:5px 6px;text-align:left}
  #print-summary th{background:#f0f0f0}
  #print-summary .num{text-align:right}
  #print-summary tr.tot td{font-weight:700;border-top:2px solid #222}
  .p-totals{margin-top:14px;max-width:360px;margin-left:auto}
  .p-notes{white-space:pre-wrap;font-size:10pt}
  .p-disclaimer{margin-top:16px;font-size:9.5pt;color:#444;border:1px solid #999;padding:8px}
  tr{page-break-inside:avoid}
}
[hidden]{display:none!important}