/* v2: stepped flow. Left = live drawing (sticky). Right = steps that open one at a time, working down the page.
   A step only appears once the one before it is complete. Finished steps fold into a one-line summary with "Change". */
:root{
  --bg:#eef2f7; --surface:#ffffff; --surface-2:#f4f7fb; --line:#d5dce8;
  --fg:#13213a; --muted:#56657e; --accent:#2155a8; --accent-ink:#ffffff; --accent-soft:#e4ecf9;
  --warn:#8a5200; --warn-bg:#fff2dc; --ok:#1b6e45; --ok-bg:#e2f4ea;
  --stage:#f9fbfd; --grid:#e6ecf4; --dim:#41516d;
  --font-ui:'Barlow', 'Segoe UI', system-ui, sans-serif;
  --font-label:'Barlow Condensed', 'Arial Narrow', 'Segoe UI', sans-serif;
  --font-mono:'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0d1420; --surface:#141e31; --surface-2:#1a263d; --line:#2a3955;
    --fg:#e7edf7; --muted:#9aaac4; --accent:#7ba4f2; --accent-ink:#0a1322; --accent-soft:#1c2e50;
    --warn:#ffcd7a; --warn-bg:#3a2a12; --ok:#7fd8a8; --ok-bg:#15352a;
    --stage:#101a2a; --grid:#18243a; --dim:#a7b8d6; color-scheme:dark;
  }
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--fg);font-family:var(--font-ui);font-size:15px;line-height:1.45}
button{font-family:inherit}
[hidden]{display:none!important}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.top{background:var(--surface);border-bottom:1px solid var(--line);padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.top .in{max-width:1670px;margin:0 auto;display:flex;align-items:center;gap:14px;padding-block:12px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:21px;letter-spacing:-.01em}
.brand b{color:var(--accent)}
.brand-logo{height:40px;width:auto;display:block;flex:none}
@media (max-width:600px){.brand-logo{height:32px}}
button.brand{border:0;background:none;color:var(--fg);padding:0;cursor:pointer;font-family:inherit}
/* Front page (Windows or Doors > Material > Product) */
.app.home{grid-template-columns:1fr}
.app.home .stage{display:none}
.app.home .panel{padding-bottom:24px}
.home-wrap{max-width:none;width:100%;margin:0 auto}
.crumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-family:var(--font-label);text-transform:uppercase;letter-spacing:.07em;font-size:13px;color:var(--muted);margin:4px 0 6px}
.crumbs button{border:0;background:none;padding:0;color:var(--accent);font:inherit;letter-spacing:inherit;text-transform:inherit;cursor:pointer}
.crumbs .sep{opacity:.5}
.crumbs .now{color:var(--fg)}
.home-wrap h1{font-size:34px;letter-spacing:-.015em;margin:0 0 4px}
.home-wrap .lead{margin-bottom:20px}
.pgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:22px}
.pgrid.two{grid-template-columns:repeat(auto-fit,minmax(340px,1fr));max-width:1240px;margin:0 auto}
.home-wrap.center{text-align:center}
.home-wrap.center .crumbs{justify-content:center}
.home-wrap.center .lead{margin-left:auto;margin-right:auto}
.home-wrap.center .pcard{text-align:left}
.pcard{position:relative;display:flex;flex-direction:column;text-align:left;border:1px solid var(--line);background:var(--surface);color:var(--fg);border-radius:14px;overflow:hidden;padding:0;cursor:pointer;box-shadow:0 1px 2px rgba(19,33,58,.05)}
.pcard:hover:not(:disabled){border-color:var(--accent);box-shadow:0 10px 26px rgba(19,33,58,.12);transform:translateY(-2px)}
.pcard:disabled{cursor:not-allowed}
.pcard:disabled .scene{filter:grayscale(.35) brightness(1.04);opacity:.82}
.pcard .scene{display:block;width:100%;aspect-ratio:16/10;background:#ece6dc}
.pcard .scene svg{width:100%;height:100%;display:block}
.pcard .scene{overflow:hidden}
.pcard .scene{position:relative}
.pcard .scene img{width:100%;height:100%;object-fit:cover;display:block}
.pcard .scene img.blurbg{position:absolute;inset:0;filter:blur(18px) brightness(.9);transform:scale(1.2)}
.pcard .scene img.whole{position:relative;object-fit:contain}
@media (prefers-reduced-motion:no-preference){.pcard .scene img{transition:transform .35s}.pcard:hover:not(:disabled) .scene img:not(.blurbg){transform:scale(1.04)}}
.pcard .pb{padding:14px 16px 16px;display:flex;flex-direction:column;gap:4px}
.pcard .pb strong{font-size:19px}
.pcard .pb span{font-size:14.5px;color:var(--muted)}
.pcard .go{margin-top:6px;font-weight:600;font-size:14px;color:var(--accent)}
.pcard:disabled .go{color:var(--muted)}
.badge{position:absolute;top:12px;right:12px;background:#fff;color:var(--fg);border:0;border-radius:999px;font-family:var(--font-label);text-transform:uppercase;letter-spacing:.1em;font-size:15px;font-weight:700;padding:7px 16px;box-shadow:0 4px 12px rgba(0,0,0,.18)}
.badge.soon{background:#111;color:#d4af37;box-shadow:0 4px 12px rgba(0,0,0,.25)}
.back{margin-top:18px}
@media (prefers-reduced-motion:no-preference){.pcard{transition:transform .15s,box-shadow .15s,border-color .15s}}
@media (max-width:600px){.home-wrap h1{font-size:24px}.pgrid,.pgrid.two{grid-template-columns:1fr 1fr;gap:10px}.pcard .pb{padding:10px 12px 12px}.pcard .pb strong{font-size:15px}.pcard .pb span:not(.go){display:none}}
.brand-sub{color:var(--fg);font-weight:700;font-size:20px;letter-spacing:-.01em}
.homebtn{margin-left:auto;display:inline-flex;align-items:center;gap:7px;border:1px solid var(--accent);background:var(--accent);color:var(--accent-ink);border-radius:999px;padding:8px 15px;font-weight:600;font-size:14px;cursor:pointer}
.homebtn:hover{filter:brightness(1.08)}
.homebtn[hidden] + .orderbtn{margin-left:auto}
.orderbtn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--surface-2);color:var(--fg);border-radius:999px;padding:7px 8px 7px 14px;font-weight:600;font-size:14px;cursor:pointer}
.orderbtn b{background:var(--accent);color:var(--accent-ink);border-radius:999px;min-width:24px;height:24px;display:grid;place-items:center;font-size:12.5px;padding:0 7px;font-family:var(--font-mono)}
.proto{font-family:var(--font-label);text-transform:uppercase;letter-spacing:.08em;font-size:12.5px;color:var(--muted);border:1px dashed var(--line);padding:4px 10px;border-radius:999px;white-space:nowrap}

.app{max-width:1840px;margin:0 auto;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(380px,1fr);gap:24px;align-items:start;padding-block:20px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}

/* Drawing stage */
.stage{position:sticky;top:16px;height:calc(100dvh - 32px);max-height:1000px;min-height:440px;display:flex;flex-direction:column;border:1px solid var(--line);border-radius:14px;overflow:hidden;background-color:var(--stage);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:24px 24px}
.stage-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 14px;background:var(--surface);border-bottom:1px solid var(--line);flex-wrap:wrap}
.stage-title{display:flex;flex-direction:column;min-width:0}
.stage-title strong{font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.stage-title span{font-family:var(--font-label);text-transform:uppercase;letter-spacing:.07em;font-size:12px;color:var(--muted)}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:9px;overflow:hidden;background:var(--surface-2)}
.seg button{border:0;background:transparent;color:var(--muted);padding:7px 12px;font-weight:600;font-size:13.5px;cursor:pointer}
.seg button.on{background:var(--accent);color:var(--accent-ink)}
.drawing{flex:1;min-height:0;padding:14px 14px 6px}
.drawing svg{width:100%;height:100%;display:block}
.empty{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;color:var(--muted);padding:16px}
.empty svg{width:min(260px,70%);height:auto;max-height:55%}
.empty strong{color:var(--fg);font-size:18px}
.empty span{max-width:36ch}
.plan{height:112px;padding:0 14px 8px;display:flex;flex-direction:column}
.plan .cap{font-family:var(--font-label);text-transform:uppercase;letter-spacing:.07em;font-size:11.5px;color:var(--muted)}
.plan svg{flex:1;min-height:0;width:100%;display:block}
.stage-foot{display:flex;gap:8px;flex-wrap:wrap;padding:10px 14px;border-top:1px solid var(--line);background:var(--surface)}
.pill{font-family:var(--font-mono);font-size:12px;padding:4px 9px;border-radius:6px;background:var(--surface-2);border:1px solid var(--line);white-space:nowrap;font-variant-numeric:tabular-nums}
.partpill{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;background:var(--warn-bg);color:var(--warn);padding:2px 8px;border-radius:4px;margin-right:6px}
.pill.warn{background:var(--warn-bg);color:var(--warn);border-color:transparent}
.pill.ok{background:var(--ok-bg);color:var(--ok);border-color:transparent}

/* Steps */
.panel{min-width:0;display:flex;flex-direction:column;gap:10px;padding-bottom:45vh}
.flowhead{display:flex;align-items:center;gap:12px;padding:2px 2px 0}
.flowhead > div{flex:1;min-width:0;display:flex;flex-direction:column}
.flowhead .kick{font-family:var(--font-label);text-transform:uppercase;letter-spacing:.07em;font-size:12.5px;color:var(--muted)}
.flowhead strong{font-size:19px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.fh-title{display:flex;align-items:center;gap:8px;min-width:0}
.rename{display:inline-flex;align-items:center;gap:4px;flex:none;font-size:13px;font-weight:600;color:var(--accent);padding:4px 8px;border-radius:6px;border:1px solid transparent}
.rename:hover{background:var(--accent-soft);border-color:var(--line)}
.name-input{flex:1;min-width:0;font:inherit;font-size:17px;font-weight:700;padding:6px 10px;border:1.5px solid var(--accent);border-radius:8px;background:var(--surface);color:var(--fg)}
.progress{height:6px;border-radius:999px;background:var(--line);overflow:hidden;margin:2px 2px 4px}
.progress i{display:block;height:100%;background:var(--accent);border-radius:999px;transition:width .3s}
.step{background:var(--surface);border:1px solid var(--line);border-radius:14px;scroll-margin-top:16px}
.step .num{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-family:var(--font-mono);font-size:12px;border:1.5px solid var(--line);flex:0 0 auto;color:var(--muted)}
.step.done{cursor:default}
.step.done .num{background:var(--ok-bg);color:var(--ok);border-color:transparent;font-size:14px}
.sum{display:flex;align-items:center;gap:12px;padding:10px 12px 10px 14px}
.sum .what{flex:1;min-width:0;display:flex;flex-direction:column;line-height:1.25}
.sum .what span{font-family:var(--font-label);text-transform:uppercase;letter-spacing:.07em;font-size:12px;color:var(--muted)}
.sum .what strong{font-weight:600;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.edit{border:1px solid var(--line);background:var(--surface);color:var(--accent);font-weight:600;font-size:13.5px;border-radius:8px;padding:6px 12px;cursor:pointer;flex:0 0 auto}
.edit:hover{border-color:var(--accent)}
.step.open{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent),0 8px 24px rgba(19,33,58,.08)}
.step.open .num{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.step .head{display:flex;align-items:center;gap:12px;padding:16px 16px 0}
.step .head h2{margin:0;font-size:21px;letter-spacing:-.01em}
.step .head .of{margin-left:auto;font-family:var(--font-label);text-transform:uppercase;letter-spacing:.07em;font-size:12.5px;color:var(--muted);white-space:nowrap}
.step .inner{padding:10px 16px 16px}
.step .foot{display:flex;justify-content:flex-end;gap:10px;padding:0 16px 16px;flex-wrap:wrap}
@keyframes reveal{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:no-preference){
  .step.fresh{animation:reveal .28s ease-out}
  .chip,.tile,.sw,.prod{transition:background-color .15s,border-color .15s}
}
.lead{color:var(--muted);margin:0 0 14px;max-width:62ch}
.group{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.group:last-child{margin-bottom:0}
.label{font-family:var(--font-label);font-weight:600;text-transform:uppercase;letter-spacing:.07em;font-size:13px;color:var(--muted);display:flex;justify-content:space-between;gap:8px}
.label em{font-style:normal;text-transform:none;letter-spacing:0;font-family:var(--font-ui);font-weight:500}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1px solid var(--line);background:var(--surface);color:var(--fg);border-radius:9px;padding:9px 13px;font-weight:500;font-size:14.5px;cursor:pointer;text-align:left;display:flex;flex-direction:column;gap:1px}
.chip small{color:var(--muted);font-size:12.5px}
.chip.on,.tile.on,.sw.on,.prod.on{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent);background:var(--accent-soft)}
.chip:hover:not(:disabled),.tile:hover:not(:disabled),.sw:hover:not(:disabled),.prod:hover{border-color:var(--accent)}
.chip:disabled,.tile:disabled,.sw:disabled{opacity:.42;cursor:not-allowed}
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(118px,1fr));gap:8px}
.tile{border:1px solid var(--line);background:var(--surface);color:var(--fg);border-radius:10px;padding:8px;display:flex;flex-direction:column;gap:6px;cursor:pointer;text-align:left}
.tile svg{width:100%;height:72px;display:block}
.tile span{font-size:13px;font-weight:600;line-height:1.25}
.tile small{font-size:11.5px;color:var(--muted);font-weight:500;display:block}
.tile:disabled small{color:var(--warn)}
.profiles{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}
.profiles .tile img{height:150px;width:100%;object-fit:contain;display:block}
.bartiles{grid-template-columns:repeat(auto-fill,minmax(120px,1fr));margin-top:8px}
.bartiles .tile img{width:100%;height:70px;object-fit:cover;border-radius:6px;display:block}
.hwtiles{grid-template-columns:repeat(auto-fill,minmax(96px,1fr))}
.tile.hw .ph{display:flex;align-items:center;justify-content:center;height:96px;background:#f6f1e6;border-radius:7px}
.tile.hw img{max-height:86px;max-width:80%;display:block}
.products{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.prod{border:1px solid var(--line);background:var(--surface);color:var(--fg);border-radius:12px;padding:12px;display:flex;flex-direction:column;gap:6px;text-align:left;cursor:pointer}
.prod svg{width:100%;height:96px}
.prod strong{font-size:15px;line-height:1.2}
.prod .sub{font-family:var(--font-label);text-transform:uppercase;letter-spacing:.07em;font-size:12px;color:var(--accent)}
.prod ul{margin:0;padding-left:16px;color:var(--muted);font-size:12.5px}
.swatches{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:8px}
.sw{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:9px;padding:6px 10px 6px 6px;background:var(--surface);cursor:pointer;text-align:left;color:var(--fg);font-weight:500;font-size:13.5px;line-height:1.2}
.sw .dot{width:30px;height:30px;border-radius:6px;flex:0 0 auto;background:var(--c);box-shadow:inset 0 0 0 1px rgba(0,0,0,.18)}
.sw .dot.grain{background:repeating-linear-gradient(7deg,var(--c) 0 3px,var(--c-d) 3px 4px,var(--c) 4px 8px)}
.sw .dot.img{background-size:cover;background-position:center}
.sw .dot.dual{background:linear-gradient(135deg,var(--c) 50%,var(--c2) 50%)}
.sw .tag{display:block;font-size:11px;color:var(--muted);font-weight:500;margin-top:2px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.field{display:flex;flex-direction:column;gap:5px;min-width:0}
.field label{font-size:13px;font-weight:600}
.field .hint{font-size:12px;color:var(--muted);font-family:var(--font-mono)}
.field .hint.bad{color:var(--warn);font-weight:500}
.unit{position:relative}
.unit::after{content:"mm";position:absolute;right:12px;top:50%;transform:translateY(-50%);color:var(--muted);font-family:var(--font-mono);font-size:13px;pointer-events:none}
input[type=number],input[type=text],input[type=email],input[type=tel],textarea{font:500 16px var(--font-ui);padding:10px 12px;border:1px solid var(--line);border-radius:9px;background:var(--surface-2);color:var(--fg);width:100%;min-width:0}
input[type=number]{font-family:var(--font-mono);font-variant-numeric:tabular-nums;padding-right:42px}
textarea{min-height:84px;resize:vertical}
.check{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border:1px solid var(--line);border-radius:9px;cursor:pointer;background:var(--surface)}
.check input{margin-top:3px;accent-color:var(--accent);width:16px;height:16px;flex:0 0 auto}
.check small{display:block;color:var(--muted);font-size:12.5px}
.note{padding:10px 12px;border-radius:9px;background:var(--surface-2);font-size:13.5px;color:var(--muted)}
.note.warn{background:var(--warn-bg);color:var(--warn)}
.note.info{background:var(--accent-soft);color:var(--fg)}
.notes{display:flex;flex-direction:column;gap:8px;margin-bottom:14px}
.fixes{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.fixbtn{border:1px solid currentColor;background:var(--surface);color:inherit;font:600 13px var(--font-ui);padding:6px 12px;border-radius:8px;cursor:pointer}
.fixbtn:hover{background:var(--fg);color:var(--surface);border-color:var(--fg)}
.note.warn .fixbtn{color:var(--warn)}
.note.warn .fixbtn:hover{background:var(--warn);color:var(--surface);border-color:var(--warn)}
.link{border:0;background:none;color:var(--accent);font-weight:600;cursor:pointer;padding:0;font-size:14px}
.btn{font-weight:600;font-size:15px;padding:11px 18px;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--fg);cursor:pointer}
.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn:disabled{opacity:.4;cursor:not-allowed}
.add{border:1px dashed var(--line);background:transparent;color:var(--accent);font-weight:600;padding:12px;border-radius:10px;cursor:pointer;font-size:14.5px;width:100%}
.add:hover{border-color:var(--accent)}
.spec{border:1px solid var(--line);border-radius:12px;padding:12px;display:flex;flex-direction:column;gap:8px;margin-bottom:10px}
.spec.sel{border-color:var(--accent)}
.spec-head{display:flex;gap:10px;align-items:center}
.spec-head .pick{display:flex;gap:10px;align-items:center;flex:1;min-width:0;border:0;background:none;padding:0;text-align:left;color:var(--fg);cursor:pointer}
.spec-head svg{width:76px;height:56px;flex:0 0 auto}
.spec-head .pick div{min-width:0}
.spec-head .pick strong{display:block}
.spec-head .pick span{color:var(--muted);font-size:13px}
.spec dl{display:grid;grid-template-columns:minmax(90px,auto) 1fr;gap:3px 12px;margin:0;font-size:13.5px}
.spec dt{color:var(--muted)}
.spec dd{margin:0;min-width:0}
.btns{display:flex;gap:6px;flex:0 0 auto}
.done-box{padding:16px;border-radius:12px;background:var(--ok-bg);color:var(--fg)}
.done-box .ref{font-family:var(--font-mono);font-size:20px;color:var(--ok);font-weight:500}
footer{max-width:1840px;margin:0 auto;padding-block:0 28px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));color:var(--muted);font-size:12.5px}
footer p{max-width:90ch;margin:0}
svg .dimtext{font-family:var(--font-mono);fill:var(--dim)}
svg .dimline{stroke:var(--dim)}

@media (max-width:900px){
  .app{grid-template-columns:1fr;gap:12px;padding-block:10px}
  .stage{top:0;height:36dvh;min-height:230px;max-height:none;z-index:5;border-radius:12px;box-shadow:0 6px 18px rgba(0,0,0,.14)}
  .stage-head{padding:6px 10px}
  .stage-title strong{font-size:14.5px}
  .seg button{padding:5px 9px;font-size:12.5px}
  .drawing{padding:8px 8px 2px}
  .plan{height:56px}
  .stage-foot{flex-wrap:nowrap;overflow-x:auto;padding:6px 10px}
  .step{scroll-margin-top:calc(36dvh + 12px)}
  .proto{display:none}
}
@media (max-width:480px){
  .homebtn{padding:8px 11px}
  .top .in{gap:8px}
  .step .head h2{font-size:19px}
  .step .head .of{display:none}
  .brand-sub{display:none}
}