:root{
  color-scheme:light;
  --bg:#F3F4F6; --surface:#FFFFFF; --surface-2:#F6F7F9;
  --ink:#111827; --ink-2:#4B5563; --ink-3:#9CA3AF;
  --rule:#E1E4E9; --rule-soft:#EDEFF2;
  --draw:#1F2937; --field:#EEF0F3; --base:#D3D8DE; --rail:#C6CDD5;
  --panel:#DCB684; --panel-ctr:#D0A05C; --panel-edge:#A87C45;
  --accent:#2B6CB0; --accent-soft:#E7EFF8; --warn:#B45309; --danger:#B91C1C;
  --shadow:0 1px 2px rgba(17,24,39,.05),0 1px 1px rgba(17,24,39,.03);
  --ff:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0E1116; --surface:#161A21; --surface-2:#1C212A;
    --ink:#E6E8EB; --ink-2:#A1A8B3; --ink-3:#6B7380;
    --rule:#2A303A; --rule-soft:#222831;
    --draw:#B4BDC8; --field:#1C222A; --base:#29303A; --rail:#2E3640;
    --panel:#5C4729; --panel-ctr:#72582F; --panel-edge:#C09255;
    --accent:#6FA8DC; --accent-soft:#1B2633; --warn:#E0A060; --danger:#F07171;
    --shadow:none;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0E1116; --surface:#161A21; --surface-2:#1C212A;
  --ink:#E6E8EB; --ink-2:#A1A8B3; --ink-3:#6B7380;
  --rule:#2A303A; --rule-soft:#222831;
  --draw:#B4BDC8; --field:#1C222A; --base:#29303A; --rail:#2E3640;
  --panel:#5C4729; --panel-ctr:#72582F; --panel-edge:#C09255;
  --accent:#6FA8DC; --accent-soft:#1B2633; --warn:#E0A060; --danger:#F07171;
  --shadow:none;
  color-scheme:dark;
}
*{box-sizing:border-box}
body{
  margin:0;
  background:var(--bg); color:var(--ink);
  font-family:var(--ff); font-size:14px; line-height:1.5;
  font-feature-settings:'tnum' 1,'cv11' 1;
  -webkit-font-smoothing:antialiased;
  padding-left:max(16px,env(safe-area-inset-left,0px));
  padding-right:max(16px,env(safe-area-inset-right,0px));
  padding-block:20px 48px;
}
[hidden]{display:none!important}
button,input,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
.wrap{max-width:1180px;margin:0 auto;display:flex;flex-direction:column;gap:20px}

.appbar{display:flex;align-items:center;gap:10px;padding:2px 2px 0}
.logo{flex:0 0 auto;width:34px;height:34px;display:block}
.logo .bg{fill:var(--accent)}
.logo .mk{fill:none;stroke:var(--surface);stroke-width:2}
.appbar .titles{flex:1;min-width:0}
.appbar h1{margin:0;font-size:20px;font-weight:700;letter-spacing:-.02em;line-height:1.1}
.appbar .sub{margin:3px 0 0;font-size:13px;line-height:1.35;color:var(--ink-2)}
.btn.theme-btn{width:36px;height:36px;padding:0;flex:0 0 auto}
#share.done{color:var(--accent);border-color:var(--accent)}
.theme-btn .i-sun{display:none}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]) .theme-btn .i-sun{display:block}
  :root:not([data-theme="light"]) .theme-btn .i-moon{display:none}
}
:root[data-theme="dark"] .theme-btn .i-sun{display:block}
:root[data-theme="dark"] .theme-btn .i-moon{display:none}
.btn.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.btn-primary:hover{color:#fff;border-color:var(--accent);filter:brightness(1.08)}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]) .btn.btn-primary{color:#0E1116} }
:root[data-theme="dark"] .btn.btn-primary{color:#0E1116}
@media (max-width:640px){
  .appbar{flex-wrap:wrap;row-gap:0}
  .appbar .titles{display:contents}
  .appbar h1{flex:1;min-width:0}
  .appbar .sub{display:none}
  /* Line break so Share and Export PDF always share their own row. */
  .appbar::after{content:"";order:3;flex-basis:100%}
  #share,#export-pdf{order:4;flex:1 1 0;margin-top:8px}
}
@media (max-width:380px){ .appbar h1{font-size:18px} .appbar .btn-primary{padding-inline:10px} }

/* Print / PDF export. #print is filled by exportPdf() just before window.print(). */
#print{display:none}
@media print{
  @page{size:letter portrait;margin:.5in}
  body{background:#fff;padding:0;font-size:11pt}
  .wrap{display:none!important}
  #print{display:block}
  .print-doc{
    /* Always print in the light palette, whatever the screen theme. */
    --bg:#fff; --surface:#fff; --surface-2:#F6F7F9;
    --ink:#111827; --ink-2:#4B5563; --ink-3:#9CA3AF;
    --rule:#D5D9DF; --rule-soft:#E6E9ED;
    --draw:#1F2937; --field:#F1F3F5; --base:#D3D8DE; --rail:#C6CDD5;
    --panel:#E6C79C; --panel-ctr:#DDB27A; --panel-edge:#A87C45;
    --accent:#2B6CB0; --accent-soft:#E7EFF8; --warn:#B45309;
    --shadow:none;
    color:var(--ink);background:#fff;
    -webkit-print-color-adjust:exact;print-color-adjust:exact;
  }
  .pg{break-after:page;display:flex;flex-direction:column;gap:12px}
  .pg:last-child{break-after:auto}
  .p-head{display:flex;align-items:center;gap:8px;padding-bottom:8px;border-bottom:1.5px solid var(--ink);font-size:10pt}
  .p-head .logo{width:22px;height:22px}
  .p-head b{font-weight:700}
  .p-head span{color:var(--ink-2)}
  .p-head i{margin-left:auto;font-style:normal;color:var(--ink-2)}
  .print-doc h2{margin:2px 0 0;font-size:18pt;font-weight:700;letter-spacing:-.02em}
  .print-doc h2 small{font-size:11pt;font-weight:500;color:var(--ink-2);letter-spacing:0}
  .print-doc h3{margin:6px 0 0;font-size:11pt;font-weight:600}
  .print-doc .readout{gap:8px}
  .print-doc .readout div{padding:8px 12px}
  .print-doc .readout dd{font-size:14pt}
  .print-doc .panel-box{box-shadow:none;break-inside:avoid}
  .p-settings{display:grid;grid-template-columns:repeat(4,1fr);margin:0;border:1px solid var(--rule);border-radius:8px;overflow:hidden}
  .p-settings div{padding:6px 10px;border-right:1px solid var(--rule-soft);border-bottom:1px solid var(--rule-soft)}
  .p-settings div:nth-child(4n){border-right:0}
  .p-settings div:nth-child(4n+1):nth-last-child(-n+4),.p-settings div:nth-child(4n+1):nth-last-child(-n+4) ~ div{border-bottom:0}
  .p-settings dt{font-size:8.5pt;color:var(--ink-2)}
  .p-settings dd{margin:0;font-weight:500}
  .print-doc .tbl-wrap{overflow:visible}
  .print-doc table{font-size:9pt;white-space:normal}
  .print-doc th,.print-doc td{padding:6px 8px}
  .p-totals .cut{max-width:3.6in}
  .p-draw{border:1px solid var(--rule);border-radius:8px;padding:8px;break-inside:avoid}
  .p-draw svg{display:block;width:100%;height:5.6in}
  .print-doc .specs{grid-template-columns:repeat(3,1fr);margin:0;border:1px solid var(--rule-soft);border-radius:8px;overflow:hidden;break-inside:avoid}
  .p-cuts ul{list-style:none;margin:0;padding:0;columns:2;column-gap:28px}
  .p-cuts li{display:flex;justify-content:space-between;gap:10px;padding:4px 0;border-bottom:1px solid var(--rule-soft);break-inside:avoid;font-size:10pt;color:var(--ink-2)}
  .p-cuts li b{color:var(--ink);font-weight:500}
}

.panel-box{background:var(--surface);border:1px solid var(--rule);border-radius:12px;box-shadow:var(--shadow)}

/* Room settings */
.controls{display:grid;grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:14px 16px;padding:16px;align-items:end}
/* Wide screens: the visible fields, Units and Reset on one row (two when there are more than nine).
   render() sets --room-cols from the fields that are showing. */
@media (min-width:1200px){ .controls{grid-template-columns:repeat(var(--room-cols,9),minmax(0,1fr));column-gap:8px} }
/* The room header only shows on phones, where the room fields start collapsed so the drawings show sooner. */
.room-fields{display:contents}
.room-head{display:none}
.fld{display:flex;flex-direction:column;gap:6px;min-width:0}
.fld > span{font-size:12px;font-weight:500;color:var(--ink-2)}
.unit{display:flex;align-items:center;background:var(--surface-2);border:1px solid var(--rule);border-radius:8px;overflow:hidden}
.unit:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.unit input{border:0;background:none;padding:8px 0 8px 10px;width:100%;min-width:0;font-size:14px;font-weight:500}
.unit input:focus-visible{outline:none}
.unit i{font-style:normal;font-size:12px;color:var(--ink-3);padding:0 10px 0 4px;white-space:nowrap}
.unit-sel{background:var(--surface-2);border:1px solid var(--rule);border-radius:8px;height:39px;padding:0 8px;font-size:14px;font-weight:500;width:100%;min-width:0}  /* same height as .unit */
.unit-sel:focus-visible{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  background:var(--surface);border:1px solid var(--rule);border-radius:8px;
  padding:8px 12px;font-size:13px;font-weight:500;color:var(--ink-2);cursor:pointer;white-space:nowrap;
}
.btn:hover{color:var(--ink);border-color:var(--ink-3)}

/* Summary stats */
.readout{display:grid;grid-template-columns:repeat(var(--cols,4),minmax(0,1fr));gap:12px;margin:0}
.readout div{padding:12px 16px;min-width:0}
.readout dt{font-size:12px;color:var(--ink-2);margin:0}
.readout dd{margin:2px 0 0;font-size:20px;font-weight:600;letter-spacing:-.01em}
@media(max-width:620px){.readout{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* Wall cards */
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
@media(max-width:900px){.grid{grid-template-columns:1fr}}
.card{display:flex;flex-direction:column;min-width:0;overflow:hidden}
/* Design picker */
.design-bar{display:flex;align-items:center;gap:10px;margin-bottom:-4px}
.nm.design-nm{flex:1 1 auto;max-width:420px;font-size:18px;margin-left:-4px}
.menu-wrap{position:relative;margin-left:auto}
.menu{
  position:absolute;right:0;top:calc(100% + 6px);z-index:20;min-width:240px;max-width:min(320px,calc(100vw - 32px));
  background:var(--surface);border:1px solid var(--rule);border-radius:10px;padding:6px;
  box-shadow:0 8px 24px rgba(17,24,39,.14);
}
.menu[hidden]{display:none}
.menu-list{max-height:min(320px,50vh);overflow-y:auto}
.menu button{
  display:flex;align-items:center;gap:8px;width:100%;text-align:left;background:none;border:0;border-radius:6px;
  padding:8px 10px;font:inherit;font-size:14px;color:var(--ink);cursor:pointer;
}
.menu button:hover:not(:disabled),.menu button:focus-visible{background:var(--accent-soft);outline:none}
.menu button:disabled{opacity:.4;cursor:not-allowed}
.menu .chk{width:14px;flex:0 0 14px;color:var(--accent)}
.menu .dn{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.menu .danger{color:var(--danger)}
.menu hr{border:0;border-top:1px solid var(--rule-soft);margin:6px 2px}
.card-top{display:flex;align-items:center;gap:10px;padding:12px 12px 8px 14px}
.nm{
  flex:1;min-width:0;font-size:16px;font-weight:600;letter-spacing:-.01em;
  background:none;border:1px solid transparent;border-radius:6px;padding:4px 6px;margin-left:-6px;
}
.nm:hover{border-color:var(--rule)}
.nm:focus-visible{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.nm::placeholder{color:var(--ink-3)}
.card-top .unit{flex:0 0 auto;border-radius:6px}
.card-top .unit input{width:64px;padding:5px 0 5px 8px;font-size:13px}
.card-top .unit i{padding:0 8px 0 3px}
.icon-btn{
  flex:0 0 auto;width:30px;height:30px;display:grid;place-items:center;
  background:none;border:1px solid transparent;border-radius:6px;color:var(--ink-3);cursor:pointer;
}
.icon-btn:hover:not(:disabled){color:var(--danger);border-color:var(--rule)}
.icon-btn:disabled{opacity:.35;cursor:not-allowed}
.card-ctl{display:flex;align-items:center;gap:10px 14px;padding:0 14px 12px;border-bottom:1px solid var(--rule-soft);flex-wrap:wrap}
.step{display:flex;align-items:center;border:1px solid var(--rule);border-radius:6px;overflow:hidden}
.step button{background:var(--surface-2);border:0;font-size:15px;line-height:1;width:28px;height:28px;cursor:pointer}
.step button:hover:not(:disabled){background:var(--accent-soft);color:var(--accent)}
.step button:disabled{color:var(--ink-3);cursor:not-allowed}
.step button:focus-visible{outline-offset:-2px}
.step .val{font-size:12.5px;font-weight:500;padding:0 10px;min-width:70px;text-align:center}
.ctr-ctl{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--ink-2)}
.ctr-ctl input[type=number],.ctr-ctl select{
  font-size:12.5px;font-weight:500;background:var(--surface-2);border:1px solid var(--rule);border-radius:6px;padding:4px 6px;
}
.ctr-ctl input[type=number]{width:62px}
.up-ctl{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--ink-2);cursor:pointer}
.up-ctl input{accent-color:var(--accent);width:15px;height:15px;cursor:pointer;margin:0}
.draw{padding:12px 14px 4px}
.draw svg{display:block;width:100%;height:auto;margin-inline:auto}
.specs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--rule-soft);border-top:1px solid var(--rule-soft);margin:8px 0 0}
.specs div{background:var(--surface);padding:9px 14px;min-width:0}
.specs dt{font-size:11.5px;color:var(--ink-2);margin:0}
.specs dd{margin:1px 0 0;font-size:13.5px;font-weight:500}
.flag{background:var(--surface-2);border-left:3px solid var(--warn);color:var(--warn);padding:9px 14px;font-size:13px;margin:0}
.add{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;min-height:180px;
  background:none;border:1.5px dashed var(--rule);border-radius:12px;color:var(--ink-2);cursor:pointer;font-size:14px;font-weight:500;
}
.add:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}
.add small{font-size:12px;font-weight:400;color:var(--ink-3)}

.d-field{fill:var(--field)}
.d-base{fill:var(--base)}
.d-rail{fill:var(--rail)}
.d-panel{fill:var(--panel)}
.d-panel-ctr{fill:var(--panel-ctr)}
.d-line{stroke:var(--draw);fill:none;stroke-linecap:square}
.d-soft{stroke:var(--panel-edge);fill:none;opacity:.8}
.d-dim{stroke:var(--accent);fill:none;stroke-linecap:round}
.d-align{stroke:var(--accent);fill:none;stroke-dasharray:2 2;opacity:.75}
.t{fill:var(--ink);font-family:var(--ff);font-weight:500}
.t-dim{fill:var(--accent);font-family:var(--ff);font-weight:500}

/* Schedule, cut list, notes */
section h3{font-size:15px;font-weight:600;letter-spacing:-.01em;margin:0 0 10px}
.tbl-wrap{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:13px;white-space:nowrap}
th,td{text-align:right;padding:9px 14px;border-bottom:1px solid var(--rule-soft)}
th:first-child,td:first-child{text-align:left}
thead th{font-size:12px;color:var(--ink-2);font-weight:500;background:var(--surface-2);border-bottom:1px solid var(--rule)}
tbody tr:last-child td{border-bottom:0}

.cuts{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}
.cut{padding:14px 16px;min-width:0}
.cut h4{font-size:14px;margin:0 0 8px;font-weight:600;overflow-wrap:anywhere}
.cut ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:5px}
.cut li{font-size:13px;color:var(--ink-2);display:flex;justify-content:space-between;gap:10px}
.cut li b{color:var(--ink);font-weight:500;white-space:nowrap}
.cut .tot{border-top:1px solid var(--rule-soft);margin-top:8px;padding-top:8px;color:var(--ink);font-weight:600}

details.notes{padding:0}
details.notes summary{cursor:pointer;padding:14px 16px;font-size:15px;font-weight:600;list-style:none;display:flex;align-items:center;gap:8px}
details.notes summary::-webkit-details-marker{display:none}
details.notes summary::before{content:'';width:7px;height:7px;border-right:1.5px solid var(--ink-2);border-bottom:1.5px solid var(--ink-2);transform:rotate(-45deg);transition:transform .15s}
details.notes[open] summary::before{transform:rotate(45deg)}
details.notes ol{margin:0;padding:0 16px 16px 36px;display:flex;flex-direction:column;gap:6px;max-width:80ch;color:var(--ink-2)}
details.notes strong{color:var(--ink);font-weight:600}
.faq .panel-box{padding:0}
.faq details.notes + details.notes{border-top:1px solid var(--rule-soft)}
.faq details.notes p{margin:0;padding:0 16px 16px 31px;max-width:80ch;color:var(--ink-2);line-height:1.5}

/* Phones: 16px inputs stop iOS Safari from zooming on focus; 40px touch targets. */
@media (max-width:640px), (pointer:coarse){
  input,select{font-size:16px!important}
  .unit input{padding-block:9px}
  .unit-sel{height:44px}
  .card-top .unit input{padding-block:7px}
  .step button{width:40px;height:40px;font-size:18px}
  .icon-btn{width:40px;height:40px}
  .up-ctl input{width:20px;height:20px}
  .ctr-ctl input[type=number],.ctr-ctl select{padding:7px 8px}
  .ctr-ctl input[type=number]{width:72px}
  .btn{min-height:40px}
  .btn.theme-btn{width:40px;height:40px}
  .menu button{padding:11px 10px;font-size:16px}
}
@media (max-width:640px){
  body{padding-block:12px 32px}
  .wrap{gap:14px}
  .controls{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding:14px}
  .controls .btn{grid-column:1 / -1}
  .room-head{display:flex;grid-column:1 / -1;align-items:center;gap:10px;min-height:40px;margin:-4px 0;padding:0;border:0;background:none;font:inherit;color:var(--ink);text-align:left;cursor:pointer}
  .room-head b{font-size:15px;font-weight:600}
  .room-sum{flex:1;min-width:0;font-size:14px;color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .room-head svg{flex:none;color:var(--ink-2);transition:transform .15s}
  .controls:not(.collapsed) .room-head svg{transform:rotate(180deg)}
  .controls.collapsed .room-fields{display:none}
  /* Summary tiles go below the walls. */
  .readout{order:1}
  #grid ~ *{order:2}
  .card-top{flex-wrap:wrap;padding:10px 8px 8px 14px;row-gap:6px}
  .nm{flex:1 1 0;font-size:17px!important}
  .card-top .unit{order:3;flex:1 1 100%;margin-right:6px}
  .card-top .unit input{width:100%}
  .card-ctl{gap:10px 12px}
  .draw{padding:10px 6px 2px}
  .readout{gap:8px}
  .readout div{padding:10px 12px}
  .readout dd{font-size:18px}
  .add{min-height:72px}
  th,td{padding:8px 10px}
}

/* Links between the wainscoting and shiplap pages */
.faq a,.foot a{color:var(--accent)}
.foot{display:flex;flex-wrap:wrap;gap:8px 20px;padding:4px 2px 0;font-size:13px}
.foot a{text-decoration:none;display:inline-flex;align-items:center;min-height:24px}
@media (max-width:640px), (pointer:coarse){ .foot a{min-height:40px} }
.foot a:hover{text-decoration:underline}
.foot a[aria-current]{color:var(--ink-2)}