:root{
  --page-bg:#f4f7f5;
  --card-bg:#ffffff;
  --border:#dfe5e2;
  --border-strong:#c7d1cd;
  --ink:#18211f;
  --muted:#67736f;
  --blue:#0b5d45;
  --blue-dark:#063e31;
  --blue-pale:#edf8f3;
  --chalk:#ffffff;
  --gold:#0b5d45;
  --accent:#c2703a;
  --accent-dark:#9c5527;
  --shadow:0 12px 35px rgba(23,62,47,0.08);
  --font-display: 'Zilla Slab', Georgia, 'Times New Roman', serif;
  --font-body: 'IBM Plex Sans', system-ui, Arial, sans-serif;
  --font-mono: 'IBM Plex Sans', system-ui, Arial, sans-serif;
}

*{box-sizing:border-box;}

body{
  margin:0;
  min-height:100vh;
  font-family:var(--font-body);
  font-size:15px;
  color:var(--ink);
  background:var(--page-bg);
}

a{color:var(--blue);}

.masthead{
  background:var(--blue-dark);
  color:var(--chalk);
  position:sticky;
  top:0;
  z-index:100;
  border-bottom:3px solid var(--accent);
}
.masthead-inner{
  max-width:1600px;
  margin:0 auto;
  padding:14px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.masthead-inner > *{min-width:0;}
.masthead .brand{
  display:flex;
  align-items:center;
  gap:12px;
  font-family:var(--font-display);
  font-weight:700;
  font-size:21px;
  color:var(--chalk);
  text-decoration:none;
  letter-spacing:0.1px;
}
.masthead .brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  color:var(--chalk);
}
.masthead .brand-mark img{
  width:100%;
  height:100%;
  object-fit:contain;
  display:block;
}
.masthead-actions{
  display:flex;
  align-items:center;
  gap:22px;
  flex-wrap:wrap;
}
.masthead-link{
  font-family:var(--font-body);
  font-weight:600;
  font-size:14px;
  color:rgba(255,255,255,0.72);
  text-decoration:none;
  white-space:nowrap;
  transition:color 0.15s ease;
}
.masthead-link:hover{color:var(--chalk);}
.masthead-btn{
  font-family:var(--font-body);
  font-weight:700;
  font-size:14px;
  color:var(--chalk);
  text-decoration:none;
  padding:9px 18px;
  border:1px solid rgba(255,255,255,0.32);
  border-radius:9px;
  transition:background 0.15s ease, border-color 0.15s ease;
  white-space:nowrap;
}
.masthead-btn:hover{background:rgba(255,255,255,0.1);border-color:rgba(255,255,255,0.55);}
.masthead-btn.solid{background:transparent;color:var(--chalk);border-color:rgba(255,255,255,0.55);font-weight:700;}
.masthead-btn.solid:hover{background:rgba(255,255,255,0.1);}
.masthead-btn.cta{
  display:inline-flex;
  align-items:center;
  gap:7px;
  background:var(--accent);
  color:var(--chalk);
  border-color:transparent;
  font-weight:800;
}
.masthead-btn.cta:hover{background:var(--accent-dark);}

.lang-switch{
  display:flex;
  align-items:center;
  border:1px solid rgba(255,255,255,0.32);
  border-radius:9px;
  overflow:hidden;
}
.lang-switch button{
  font-family:var(--font-body);
  font-weight:700;
  font-size:12.5px;
  letter-spacing:0.3px;
  color:rgba(255,255,255,0.65);
  background:transparent;
  border:none;
  padding:8px 12px;
  cursor:pointer;
  transition:background 0.15s ease, color 0.15s ease;
}
.lang-switch button + button{border-left:1px solid rgba(255,255,255,0.22);}
.lang-switch button:hover{color:var(--chalk);}
.lang-switch button.active{background:var(--accent);color:var(--chalk);}

@media (max-width:600px){
  .masthead-inner{padding:10px 14px;gap:10px;}
  .masthead .brand{font-size:16px;gap:8px;}
  .masthead .brand-mark{width:28px;height:28px;}
  .masthead-actions{gap:12px;}
  .masthead-btn{font-size:12px;padding:7px 11px;}
  .lang-switch button{padding:6px 9px;font-size:11.5px;}
}

.sheet-header{
  max-width:1600px;
  margin:0 auto 24px;
  padding:32px 24px 22px;
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  gap:24px;
  flex-wrap:wrap;
  border-bottom:1px solid var(--border);
}
.sheet-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-body);
  font-weight:700;
  font-size:12.5px;
  letter-spacing:1.2px;
  text-transform:uppercase;
  color:var(--blue);
  margin-bottom:10px;
}
.sheet-eyebrow::before{
  content:"";
  width:20px;
  height:2px;
  border-radius:2px;
  background:var(--blue);
}
.sheet-header h1{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(30px,4.2vw,42px);
  letter-spacing:0.1px;
  margin:0;
  color:var(--ink);
}
.sheet-header h1 .hl{color:var(--blue);}
.sheet-header p{
  margin:12px 0 0;
  color:var(--muted);
  max-width:none;
  white-space:nowrap;
  font-size:16px;
  line-height:1.6;
}
@media (max-width:1100px){
  .sheet-header p{white-space:normal;max-width:580px;}
}
.title-block{
  display:flex;
  flex-direction:column;
  gap:9px;
  font-family:var(--font-body);
  font-size:13px;
  color:var(--muted);
  border:1px solid var(--border);
  padding:14px 20px;
  border-radius:14px;
  background:var(--card-bg);
  box-shadow:var(--shadow);
  min-width:200px;
}
.title-block-head{
  display:flex;
  align-items:center;
  gap:7px;
  font-size:11px;
  font-weight:800;
  letter-spacing:0.6px;
  text-transform:uppercase;
  color:var(--blue);
  padding-bottom:9px;
  margin-bottom:2px;
  border-bottom:1px solid var(--border);
}
.title-block-head svg{opacity:0.85;flex:0 0 auto;}
.title-block-row{
  display:flex;
  justify-content:space-between;
  gap:18px;
  white-space:nowrap;
}
.title-block-row span{
  font-size:11px;
  font-weight:700;
  letter-spacing:0.4px;
  text-transform:uppercase;
  color:var(--muted);
}
.title-block-row b{color:var(--blue);font-weight:700;}

.layout{
  max-width:1600px;
  margin:0 auto;
  padding:0 24px;
  display:grid;
  grid-template-columns:380px 1fr;
  gap:22px;
}
.layout > div{min-width:0;}
@media (max-width:920px){
  .layout{grid-template-columns:1fr;}
  .layout > div{display:contents;}
  .panel-size{order:1;}
  .panel-roof{order:2;}
  .drawing-panel{order:3;margin-top:0;}
  .bom{order:4;}
  .summary-card{order:5;}
  .panel-prices{order:6;}
}

.panel{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:18px;
  padding:22px;
  box-shadow:var(--shadow);
}
.panel + .panel{margin-top:18px;}

.panel h2{
  font-family:var(--font-display);
  font-size:16px;
  font-weight:800;
  color:var(--blue);
  margin:0 0 16px;
  padding-bottom:10px;
  border-bottom:1px solid var(--border);
}
.panel h2 .step-num{
  display:inline-block;
  border:1.5px solid var(--blue);
  border-radius:6px;
  padding:1px 7px;
  color:var(--blue);
  font-family:var(--font-body);
  font-size:13px;
  font-weight:800;
  margin-right:9px;
  vertical-align:middle;
}

.subhead{
  font-family:var(--font-display);
  font-size:13px;
  font-weight:800;
  color:var(--ink);
  margin:22px 0 4px;
  padding-top:16px;
  border-top:1px solid var(--border);
}

label{
  display:flex;
  justify-content:space-between;
  font-size:13px;
  color:var(--ink);
  margin-top:14px;
  font-weight:700;
}
label span.val{
  color:var(--ink);
  font-weight:800;
}

input[type="range"]{
  width:100%;
  margin-top:8px;
  accent-color:var(--blue);
}

.dim-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
}
.dim-field{min-width:0;}
.dim-field label{margin-top:14px;}
.dim-input{
  display:flex;
  align-items:stretch;
  margin-top:6px;
  border:1px solid var(--border);
  border-radius:10px;
  overflow:hidden;
}
.dim-input input{
  flex:1;
  min-width:0;
  border:none;
  padding:10px 12px;
  font-family:var(--font-body);
  font-size:14px;
  color:var(--ink);
  background:var(--card-bg);
}
.dim-input input:focus{outline:none;background:var(--blue-pale);}
.dim-input span{
  display:flex;
  align-items:center;
  padding:0 14px;
  color:var(--muted);
  font-size:13px;
  font-weight:600;
  background:#fafbfd;
  border-left:1px solid var(--border);
}

.seg-group{
  display:grid;
  grid-template-columns:1fr 1fr 1fr;
  gap:7px;
  margin-top:8px;
}
.seg-btn{
  min-width:0;
  padding:9px 4px;
  border:1px solid var(--border);
  border-radius:10px;
  background:var(--card-bg);
  color:var(--ink);
  font-family:var(--font-body);
  font-weight:700;
  font-size:13px;
  text-align:center;
  cursor:pointer;
  transition:border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.seg-btn small{font-weight:500;color:var(--muted);font-size:11px;}
.seg-btn:hover{border-color:var(--blue);}
.seg-btn.active{background:var(--blue-pale);border-color:var(--blue);color:var(--blue);}
.seg-btn.active small{color:var(--blue);}
.seg-group.disabled .seg-btn{opacity:0.45;cursor:not-allowed;}
.seg-group.disabled .seg-btn:hover{border-color:var(--border);}

.check-row{
  display:flex;
  align-items:center;
  justify-content:flex-start;
  gap:8px;
  cursor:pointer;
}
.check-row input[type="checkbox"]{
  width:18px;
  height:18px;
  accent-color:var(--blue);
  cursor:pointer;
}
.check-row span{font-weight:700;font-size:13px;color:var(--ink);}

.info-box{
  display:flex;
  gap:9px;
  margin-top:14px;
  padding:11px 13px;
  background:var(--blue-pale);
  border-radius:10px;
  font-size:12px;
  line-height:1.5;
  color:var(--muted);
}
.info-box.warn{background:#fdecea;color:#a3372c;}

select{
  width:100%;
  margin-top:8px;
  padding:11px 12px;
  border-radius:10px;
  border:1px solid var(--border);
  background:var(--card-bg);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:14px;
}
select:focus, input:focus{
  outline:2px solid var(--blue);
  outline-offset:1px;
}

.price-row{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:8px;
  margin-top:12px;
}
.price-row label{margin:0;flex:1;font-weight:600;font-size:13px;color:var(--muted);}
.price-row input[type="number"]{
  width:110px;
  padding:8px 9px;
  border-radius:10px;
  border:1px solid var(--border);
  background:var(--card-bg);
  color:var(--ink);
  font-size:14px;
  text-align:right;
}

.adv-details{margin-top:10px;}
.adv-details summary{
  cursor:pointer;
  font-size:13px;
  font-weight:700;
  color:var(--blue);
  padding:4px 0;
  list-style:none;
}
.adv-details summary::-webkit-details-marker{display:none;}
.adv-details summary::before{
  content:'▸ ';
  display:inline-block;
  transition:transform 0.15s ease;
}
.adv-details[open] summary::before{transform:rotate(90deg);}
.adv-details .price-row:first-of-type{margin-top:10px;}

button.primary{
  width:100%;
  margin-top:20px;
  padding:13px;
  background:var(--blue);
  border:none;
  border-radius:12px;
  color:var(--chalk);
  font-family:var(--font-display);
  font-weight:800;
  font-size:15px;
  cursor:pointer;
  transition:0.2s;
}
button.primary:hover{background:var(--blue-dark);}

.btn-row{display:flex;gap:10px;margin-top:12px;}
.btn-row button{
  flex:1;
  padding:11px;
  background:var(--card-bg);
  border:1px solid var(--border);
  color:var(--blue);
  border-radius:10px;
  font-family:var(--font-body);
  font-weight:800;
  font-size:13.5px;
  cursor:pointer;
}
.btn-row button:hover{border-color:var(--blue);background:var(--blue-pale);}
.btn-row .cta{
  flex:1;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:7px;
  padding:11px;
  background:#0d7377;
  border:1px solid transparent;
  color:var(--chalk);
  border-radius:10px;
  font-family:var(--font-body);
  font-weight:800;
  font-size:13.5px;
  text-decoration:none;
  cursor:pointer;
  transition:background 0.15s ease;
}
.btn-row .cta:hover{background:#0a5b5e;}

.drawing-panel{
  padding:0;
  overflow:hidden;
}
.drawing-panel h2{padding:20px 20px 0;margin-bottom:14px;border-bottom:none;}
.viewer-top{
  padding:0 20px 14px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
}
.viewer-top .viewer-dims{
  font-family:var(--font-display);
  font-weight:800;
  font-size:15px;
  color:var(--ink);
}
.viewer-top .viewer-slope{
  background:var(--blue-pale);
  color:var(--blue);
  padding:6px 12px;
  border-radius:10px;
  font-weight:800;
  font-size:14px;
}
.drawing-wrap{
  position:relative;
  background:radial-gradient(circle at 50% 30%, #fff 0, #f6f8f7 55%, #eef2f0 100%);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
/* The canvas is fully opaque (its own 3D scene fills the whole area), so
   unlike the BOM table's watermark-behind-content trick, this one has to sit
   visually on top to be seen at all — pointer-events:none (inherited from
   .bom-watermark) still lets camera drag/zoom pass through to the canvas. */
.drawing-wrap .bom-watermark{z-index:2;}
.drawing-wrap canvas{position:relative;z-index:1;width:100%;height:560px;display:block;touch-action:none;}
.viewer-stats{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
}
.viewer-stats div{
  padding:14px 18px;
  color:var(--muted);
  font-size:10.5px;
  text-transform:uppercase;
  letter-spacing:0.4px;
  border-right:1px solid var(--border);
}
.viewer-stats div:last-child{border-right:none;}
.viewer-stats b{display:block;color:var(--blue-dark);font-size:14.5px;margin-top:4px;text-transform:none;}
.drawing-caption{
  font-family:var(--font-body);
  font-size:13px;
  color:var(--muted);
  text-align:center;
  padding:14px 20px 20px;
  line-height:1.5;
}
.drawing-caption b{color:var(--blue);font-weight:700;}
button.reset-cam{
  margin:0 20px 20px;
  width:calc(100% - 40px);
  padding:11px;
  border:1px solid var(--blue);
  color:var(--blue);
  background:var(--card-bg);
  border-radius:10px;
  font-family:var(--font-body);
  font-weight:800;
  font-size:13.5px;
  cursor:pointer;
}
button.reset-cam:hover{background:var(--blue-pale);}

.summary-card{
  position:relative;
  overflow:hidden;
  margin-top:20px;
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:18px;
  padding:22px;
  box-shadow:var(--shadow);
}
.summary-card h2{
  position:relative;
  z-index:1;
  font-family:var(--font-display);
  font-size:15px;
  font-weight:800;
  color:var(--blue);
  margin:0 0 14px;
  padding-bottom:10px;
  border-bottom:1px solid var(--border);
}
#summaryBody{position:relative;z-index:1;}
.summary-row{
  display:flex;
  justify-content:space-between;
  gap:16px;
  padding:8px 0;
  border-bottom:1px solid var(--border);
  font-size:14px;
}
.summary-row:last-of-type{border-bottom:none;}
.summary-row .k{color:var(--muted);}
.summary-row .v{color:var(--ink);font-weight:700;text-align:right;}
.summary-total{
  margin-top:16px;
  padding-top:16px;
  border-top:2px solid var(--blue);
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  gap:16px;
  flex-wrap:wrap;
}
.summary-total .k{font-size:14.5px;font-weight:700;color:var(--ink);}
.summary-total .v{
  font-family:var(--font-display);
  font-size:clamp(19px, 6vw, 27px);
  font-weight:800;
  color:var(--blue);
  white-space:nowrap;
}
.summary-placeholder{
  color:var(--muted);
  font-size:14px;
  line-height:1.6;
}

.bom{
  position:relative;
  margin-top:20px;
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:18px;
  overflow:hidden;
  box-shadow:var(--shadow);
}
.bom-watermark{
  position:absolute;
  inset:0;
  pointer-events:none;
  user-select:none;
  z-index:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='560' height='300'%3E%3Ctext x='20' y='175' font-family='Inter, Arial, sans-serif' font-weight='800' font-size='48' fill='%230b5d45' fill-opacity='0.42' transform='rotate(-28 280 150)'%3EFlev Magyarorszag%3C/text%3E%3C/svg%3E");
  background-repeat:repeat;
}
.bom-head{
  position:relative;
  z-index:1;
  background:var(--blue-pale);
  color:var(--blue-dark);
  padding:14px 20px;
  font-family:var(--font-display);
  font-size:13.5px;
  font-weight:800;
  display:flex;
  justify-content:space-between;
}
.bom-scroll{
  position:relative;
  z-index:1;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}
table.bom-table{
  width:100%;
  min-width:680px;
  border-collapse:collapse;
  font-size:14px;
}
table.bom-table th, table.bom-table td{
  padding:11px 16px;
  text-align:left;
  border-bottom:1px solid var(--border);
}
table.bom-table th{
  font-family:var(--font-body);
  font-size:11px;
  font-weight:800;
  text-transform:uppercase;
  letter-spacing:0.4px;
  color:var(--muted);
  background:#fafbfd;
  border-bottom:1px solid var(--border-strong);
  white-space:nowrap;
}
table.bom-table td.item{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  color:var(--ink);
}
table.bom-table td.item .row-icon{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:26px;
  height:26px;
  border-radius:8px;
  background:var(--blue-pale);
  color:var(--blue);
}
table.bom-table td.num{
  text-align:right;
  font-weight:500;
  color:var(--muted);
  white-space:nowrap;
}
table.bom-table td.num.price{
  font-weight:700;
  color:var(--blue-dark);
}
.bom-placeholder{
  text-align:center;
  color:var(--muted);
  font-family:var(--font-body);
  font-size:14px;
  line-height:1.6;
  padding:28px 24px;
}
table.bom-table tr.group td{
  border-top:2px solid var(--border);
  padding-top:16px;
}
table.bom-table tr.subtotal td{
  font-weight:700;
  color:var(--ink);
  background:var(--blue-pale);
}
table.bom-table tr.subtotal td.num.price{
  font-weight:800;
  font-size:15px;
  color:var(--blue-dark);
}
table.bom-table tr.total td{
  border-top:2px solid var(--blue);
  font-weight:700;
  color:var(--ink);
}
table.bom-table tr.total td.num{font-size:16.5px;white-space:nowrap;}
table.bom-table tr.total td.num.price{
  font-weight:800;
  font-size:18.5px;
  color:var(--blue);
  white-space:nowrap;
}

.disclaimer{
  margin-top:18px;
  padding:0 24px;
  font-size:14px;
  color:var(--muted);
  line-height:1.6;
  max-width:1600px;
  margin-left:auto;margin-right:auto;
}
.disclaimer b{color:var(--ink);}

.topbar-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}

.contact-band{
  margin-top:32px;
  padding:26px 28px;
  background:linear-gradient(110deg, var(--blue-dark), var(--blue));
  text-align:center;
  scroll-margin-top:96px;
}
.contact-inner{
  max-width:440px;
  margin:0 auto;
}
.contact-info{margin-bottom:16px;}
.contact-text{
  margin:0 0 6px;
  color:rgba(255,255,255,0.85);
  font-weight:500;
  font-size:14px;
  line-height:1.4;
}
.contact-company{
  display:block;
  margin:0;
  font-family:var(--font-display);
  font-weight:800;
  font-size:17px;
  color:var(--chalk);
}
.contact-btn{
  display:inline-block;
  color:var(--blue-dark);
  background:var(--chalk);
  font-family:var(--font-display);
  font-weight:800;
  font-size:14px;
  text-decoration:none;
  padding:11px 26px;
  border-radius:10px;
  transition:background 0.15s ease, transform 0.15s ease;
}
.contact-btn:hover{background:var(--blue-pale);}

footer.footnote{
  text-align:center;
  padding:12px 24px;
  background:var(--blue-dark);
  font-family:var(--font-body);
  font-size:12px;
  color:rgba(255,255,255,0.75);
}
footer.footnote p{margin:0;}
footer.footnote .footnote-credit{
  margin-top:6px;
  font-size:13px;
  font-weight:500;
  letter-spacing:0.2px;
  color:rgba(255,255,255,0.55);
}
footer.footnote .footnote-credit a{
  color:#7fe6bb;
  font-weight:800;
  font-size:15px;
  letter-spacing:0.2px;
  text-decoration:none;
  padding-bottom:2px;
  border-bottom:1px solid rgba(127,230,187,0.45);
  transition:color 0.15s ease, border-color 0.15s ease;
}
footer.footnote .footnote-credit a:hover{
  color:#ffffff;
  border-color:rgba(255,255,255,0.8);
}

@media (max-width:600px){
  .sheet-header{padding:20px 18px 16px;}
  .layout{padding:0 18px;}
  .title-block{width:100%;}

  .panel{padding:16px;border-radius:14px;}

  select, input[type="number"]{font-size:16px;}
  .price-row input[type="number"]{width:96px;}

  table.bom-table{min-width:0;font-size:13px;}
  table.bom-table th, table.bom-table td{padding:9px 10px;}
  table.bom-table tr.group td{padding-top:12px;}

  .drawing-wrap canvas{height:420px;}
  .viewer-stats{grid-template-columns:repeat(2, 1fr);}
}

@media (min-width:601px) and (max-width:1024px){
  .drawing-wrap canvas{height:460px;}
}
@media (min-width:1400px){
  .drawing-wrap canvas{height:640px;}
}

@media (max-width:380px){
  .btn-row{flex-direction:column;}
}