/* Prothaus · Roterpunkt S.L. — public site
   Concept: an architect's drawing sheet. Plan grid, sheet numbers,
   dimension lines and a title block; the red dot (Roterpunkt) as marker. */

@font-face{font-family:"Jost";font-style:normal;font-weight:300;font-display:swap;src:url(/assets/fonts/jost-latin-300-normal.woff2) format("woff2")}
@font-face{font-family:"Jost";font-style:normal;font-weight:400;font-display:swap;src:url(/assets/fonts/jost-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Jost";font-style:normal;font-weight:500;font-display:swap;src:url(/assets/fonts/jost-latin-500-normal.woff2) format("woff2")}
@font-face{font-family:"Jost";font-style:normal;font-weight:600;font-display:swap;src:url(/assets/fonts/jost-latin-600-normal.woff2) format("woff2")}

:root{
  --red:#EE2224; --red-dark:#C8161A;
  --ink:#231F20; --grey:#56646C; --line:#D5DDDC; --paper:#F3F5F4; --white:#fff;
  --grid:rgba(86,100,108,.07);
  --wrap:1240px; --gut:clamp(16px,4vw,40px);
  --f:"Jost","Liberation Sans",Arial,sans-serif;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{margin:0;font-family:var(--f);font-weight:400;font-size:17px;line-height:1.6;color:var(--ink);
  background-color:var(--paper);
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:32px 32px;}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--red)}
:focus-visible{outline:2px solid var(--red);outline-offset:3px}
h1,h2,h3{font-weight:400;line-height:1.08;letter-spacing:-.015em;margin:0}
p{margin:0 0 1em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.skip{position:absolute;left:-9999px;top:8px;background:var(--ink);color:#fff;padding:8px 14px;z-index:99}
.skip:focus{left:8px}
.sel{user-select:all}

/* ---------- labels & red dot ---------- */
.dot{display:inline-block;width:.55em;height:.55em;border-radius:50%;background:var(--red);flex:none}
.label{display:inline-flex;align-items:center;gap:.7em;font-size:12px;font-weight:500;letter-spacing:.2em;text-transform:uppercase;color:var(--grey)}
.label b{color:var(--ink);font-weight:600}

/* ---------- header ---------- */
.hdr{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:saturate(1.2) blur(8px);border-bottom:1px solid var(--line)}
.hdr .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px}
.brand{display:flex;flex-direction:column;align-items:flex-start;gap:5px;text-decoration:none}
.brand img{height:36px;width:auto}
.brand span{font-size:9.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--grey);white-space:nowrap}
.nav{display:flex;align-items:center;gap:28px}
.nav ul{display:flex;gap:26px;list-style:none;margin:0;padding:0}
.nav a{font-size:13px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;text-decoration:none}
.lang{display:flex;gap:2px;border:1px solid var(--line);padding:2px}
.lang a{font-size:11.5px;letter-spacing:.12em;padding:4px 7px;text-decoration:none;color:var(--grey)}
.lang a[aria-current]{background:var(--ink);color:#fff}
.staff{font-size:12px!important;color:var(--grey);white-space:nowrap}
.menu{display:none}
.menu summary{list-style:none;cursor:pointer;width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--line)}
.menu summary::-webkit-details-marker{display:none}
.menu summary i,.menu summary i::before,.menu summary i::after{display:block;width:18px;height:1.5px;background:var(--ink);position:relative}
.menu summary i::before,.menu summary i::after{content:"";position:absolute;left:0}
.menu summary i::before{top:-6px}.menu summary i::after{top:6px}
@media (max-width:1100px){
  .nav{display:none}
  .menu{display:block;position:static}
  .menu[open] .panel{position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);padding:16px var(--gut) 24px;display:flex;flex-direction:column;gap:18px}
  .menu .panel ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
  .menu .panel ul a{display:block;padding:10px 0;font-size:15px;letter-spacing:.12em;text-transform:uppercase;text-decoration:none;border-bottom:1px solid var(--line)}
  .brand span{font-size:8.5px;letter-spacing:.16em}
}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:.8em;padding:15px 24px;font:500 13px/1 var(--f);letter-spacing:.16em;text-transform:uppercase;text-decoration:none;border:1px solid var(--ink);background:transparent;color:var(--ink);cursor:pointer;transition:background .25s var(--ease),color .25s var(--ease),border-color .25s}
.btn:hover{background:var(--ink);color:#fff}
.btn.red{background:var(--red);border-color:var(--red);color:#fff}
.btn.red:hover{background:var(--red-dark);border-color:var(--red-dark);color:#fff}
.btn .arr{transition:transform .25s var(--ease)}
.btn:hover .arr{transform:translateX(4px)}

/* ---------- hero ---------- */
.hero{padding:clamp(40px,7vw,96px) 0 0}
.hero .grid{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gut);align-items:end}
.hero .txt{grid-column:1/span 6;padding-bottom:clamp(8px,3vw,40px)}
.hero h1{font-weight:300;font-size:clamp(2.6rem,6.2vw,5.4rem);line-height:.98;letter-spacing:-.03em;margin:22px 0 26px}
.hero h1 em{font-style:normal;font-weight:500;color:var(--red)}
.hero .lead{font-size:clamp(1.02rem,1.4vw,1.18rem);color:var(--grey);max-width:34em;margin-bottom:34px}
.hero .ctas{display:flex;flex-wrap:wrap;gap:12px}
.hero figure{grid-column:7/span 6;margin:0;position:relative}
.frame{position:relative;background:#fff;padding:10px;border:1px solid var(--line)}
.frame::before,.frame::after{content:"";position:absolute;width:18px;height:18px;border-color:var(--red);border-style:solid}
.frame::before{top:-7px;left:-7px;border-width:2px 0 0 2px}
.frame::after{bottom:-7px;right:-7px;border-width:0 2px 2px 0}
.frame img{width:100%;aspect-ratio:1024/693;object-fit:cover}
.dim{display:flex;align-items:center;gap:12px;margin-top:16px;font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--grey)}
.dim::before,.dim::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,var(--grey) 1px,transparent 1px) left/100% 100% no-repeat,linear-gradient(var(--grey),var(--grey)) center/100% 1px no-repeat;border-left:1px solid var(--grey);border-right:1px solid var(--grey);height:9px;background:linear-gradient(var(--grey),var(--grey)) center/100% 1px no-repeat}
.facts{margin-top:clamp(40px,6vw,72px);border-top:1px solid var(--ink);display:grid;grid-template-columns:repeat(3,1fr)}
.facts div{padding:18px 20px 22px 0;border-right:1px solid var(--line)}
.facts div+div{padding-left:20px}
.facts div:last-child{border-right:0}
.facts small{display:block;font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--grey);margin-bottom:6px}
.facts span{font-size:16px}
@media (max-width:900px){
  .hero .txt,.hero figure{grid-column:1/-1}
  .facts{grid-template-columns:1fr}
  .facts div,.facts div+div{padding:14px 0;border-right:0;border-bottom:1px solid var(--line)}
}

/* ---------- sections ---------- */
.sec{padding:clamp(72px,10vw,140px) 0}
.sec.white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec.dark{background:var(--ink);color:#fff;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:32px 32px}
.sec.dark .label{color:#AEB8BD}.sec.dark .label b{color:#fff}
.sec.dark .muted{color:#C3CBCF}
.head{display:grid;grid-template-columns:minmax(150px,3fr) 9fr;gap:var(--gut);margin-bottom:clamp(40px,6vw,72px)}
.sheet{font-weight:300;font-size:clamp(3.4rem,7vw,6rem);line-height:.8;letter-spacing:-.04em;color:transparent;-webkit-text-stroke:1px var(--grey)}
.sec.dark .sheet{-webkit-text-stroke-color:#8A979D}
.head h2{font-weight:300;font-size:clamp(2rem,4vw,3.4rem);margin:14px 0 18px;max-width:18em}
.head p{color:var(--grey);font-size:1.08rem;max-width:40em;margin:0}
.muted{color:var(--grey)}
@media (max-width:760px){.head{grid-template-columns:1fr;gap:10px}}

/* services table */
.tbl{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.cell{background:var(--paper);padding:30px 28px 34px;position:relative;transition:background .3s var(--ease)}
.sec.white .cell{background:#fff}
.cell:hover{background:#fff}
.sec.white .cell:hover{background:var(--paper)}
.cell .no{font-size:11.5px;letter-spacing:.2em;color:var(--grey);display:flex;justify-content:space-between;align-items:center}
.cell .no .dot{opacity:0;transform:scale(.3);transition:all .3s var(--ease)}
.cell:hover .no .dot{opacity:1;transform:none}
.cell h3{font-size:1.32rem;font-weight:500;margin:26px 0 10px}
.cell p{color:var(--grey);font-size:.98rem;margin:0}
@media (max-width:900px){.tbl{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.tbl{grid-template-columns:1fr}}

/* engineering band */
.eng{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gut);align-items:start}
.eng .pics{grid-column:1/span 7;display:grid;grid-template-columns:5fr 4fr;grid-template-rows:auto auto;gap:14px}
.eng .pics figure{margin:0;position:relative}
.eng .pics figure:first-child{grid-row:1/span 2}
.eng .pics img{width:100%;height:100%;object-fit:cover;filter:grayscale(.35) contrast(1.02)}
.eng .pics figure:first-child img{aspect-ratio:4/5}
.eng .pics figure:not(:first-child) img{aspect-ratio:4/3}
.eng .pics figcaption{position:absolute;left:10px;bottom:10px;background:#fff;font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;padding:5px 8px;color:var(--grey)}
.eng .body{grid-column:9/span 4}
.eng blockquote{margin:0 0 30px;padding:0 0 0 22px;border-left:2px solid var(--red);font-size:1.35rem;font-weight:300;line-height:1.35}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:26px 0 0;padding:0;list-style:none}
.tags li{border:1px solid var(--line);background:#fff;padding:7px 12px;font-size:13px;letter-spacing:.06em}
@media (max-width:900px){.eng .pics,.eng .body{grid-column:1/-1}}

/* why */
.why{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid #fff3}
.why div{padding:30px 26px 6px 0;border-right:1px solid #ffffff22}
.why div+div{padding-left:26px}
.why div:last-child{border-right:0}
.why .n{font-size:3rem;font-weight:300;line-height:1;color:var(--red);display:block;margin-bottom:22px}
.why h3{font-size:1.25rem;font-weight:500;margin-bottom:10px}
.why p{color:#C3CBCF;font-size:.98rem}
@media (max-width:900px){.why{grid-template-columns:1fr 1fr}.why div{padding:26px 18px 6px 0!important;border-right:0;border-bottom:1px solid #ffffff22}}
@media (max-width:560px){.why{grid-template-columns:1fr}}

/* process */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gut);position:relative;padding-top:34px}
.steps::before{content:"";position:absolute;left:0;right:0;top:8px;height:1px;background:var(--ink)}
.step{position:relative}
.step::before{content:"";position:absolute;top:-31px;left:0;width:11px;height:11px;border-radius:50%;background:var(--paper);border:1.5px solid var(--ink)}
.step:hover::before{background:var(--red);border-color:var(--red)}
.step .n{font-size:12px;letter-spacing:.22em;color:var(--grey)}
.step h3{font-size:1.4rem;font-weight:500;margin:12px 0 10px}
.step p{color:var(--grey)}
@media (max-width:760px){.steps{grid-template-columns:1fr;padding-top:0;padding-left:30px}.steps::before{left:5px;right:auto;top:0;bottom:0;width:1px;height:auto}.step::before{top:6px;left:-30px}}

/* homes */
.proj{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gut);align-items:center}
.proj .duo{grid-column:1/span 7;display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:start}
.proj .duo figure{margin:0}
.proj .duo figure:nth-child(2){margin-top:64px}
.proj .duo .frame img{aspect-ratio:4/5;object-fit:cover}
.proj .body{grid-column:9/span 4}
.proj h2{font-weight:300;font-size:clamp(2rem,4vw,3.2rem);margin:16px 0 20px}
.proj .btn{margin-top:14px}
@media (max-width:900px){.proj .duo,.proj .body{grid-column:1/-1}}
@media (max-width:520px){.proj .duo figure:nth-child(2){margin-top:32px}}

/* contact */
.contact{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gut)}
.contact .info{grid-column:1/span 5}
.contact h2{font-weight:300;font-size:clamp(2rem,4vw,3.3rem);margin:16px 0 18px}
.contact dl{margin:36px 0 0;border-top:1px solid var(--ink)}
.contact dl div{display:grid;grid-template-columns:110px 1fr;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}
.contact dt{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--grey);padding-top:4px}
.contact dd{margin:0}
.form{grid-column:7/span 6;background:#fff;border:1px solid var(--line);padding:clamp(22px,4vw,40px);position:relative}
.form::before{content:"";position:absolute;top:-1px;left:-1px;width:64px;height:3px;background:var(--red)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.f{display:flex;flex-direction:column;gap:6px;margin-bottom:18px}
.f label{font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--grey)}
.f input,.f textarea{font:inherit;font-size:16px;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-bottom-color:var(--grey);padding:12px 14px;border-radius:0;width:100%}
.f input:focus,.f textarea:focus{outline:none;border-color:var(--ink);background:#fff}
.f textarea{min-height:150px;resize:vertical}
.chk{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--grey);margin:4px 0 24px}
.chk input{width:18px;height:18px;margin:2px 0 0;accent-color:var(--red);flex:none}
.hp{position:absolute!important;left:-10000px!important;width:1px;height:1px;overflow:hidden}
.status{display:none;margin:0 0 20px;padding:14px 16px;border-left:3px solid var(--ink);background:var(--paper);font-size:15px}
.status.ok{display:block;border-color:#2E7D4F}
.status.err{display:block;border-color:var(--red)}
@media (max-width:900px){.contact .info,.form{grid-column:1/-1}}
@media (max-width:520px){.row{grid-template-columns:1fr;gap:0}}

/* ---------- inner pages ---------- */
.page-hd{padding:clamp(48px,7vw,96px) 0 clamp(28px,4vw,48px);border-bottom:1px solid var(--line)}
.page-hd h1{font-weight:300;font-size:clamp(2.4rem,5.4vw,4.6rem);letter-spacing:-.03em;margin:18px 0 18px;max-width:14em}
.page-hd p{color:var(--grey);font-size:1.1rem;max-width:38em;margin:0}
.swatches{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.sw{background:#fff;margin:0}
.sw img{width:100%;aspect-ratio:7/4;object-fit:cover}
.sw figcaption{display:flex;gap:12px;align-items:baseline;padding:14px 16px 16px}
.sw figcaption b{font-weight:400;font-size:12px;letter-spacing:.16em;color:var(--red);min-width:1.6em}
.colors{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:22px}
.col{margin:0}
.col img{width:100%;aspect-ratio:1;object-fit:cover;border:1px solid var(--line)}
.col figcaption{margin-top:10px;font-size:14px;display:flex;gap:10px}
.col figcaption b{font-weight:500;color:var(--red)}
.cta-q{margin-top:56px}
.legal{max-width:760px}
.legal h2{font-size:1.45rem;font-weight:500;margin:44px 0 12px}
.legal p,.legal li{color:#3A4247}
.legal ul{padding-left:1.2em}
.legal table{border-collapse:collapse;width:100%;margin:8px 0 10px;background:#fff}
.legal th,.legal td{text-align:left;vertical-align:top;border:1px solid var(--line);padding:10px 14px;font-size:15px}
.legal th{width:34%;font-weight:500;color:var(--grey);font-size:12px;letter-spacing:.14em;text-transform:uppercase}
.legal .upd{margin-top:40px;font-size:14px;color:var(--grey)}

/* ---------- footer: title block ---------- */
.ftr{background:#fff;border-top:1px solid var(--ink);margin-top:0}
.tblock{display:grid;grid-template-columns:2.2fr 1.4fr 1.4fr 1.3fr 1.1fr;border-left:1px solid var(--line)}
.tblock>div{border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:24px 20px 26px}
.tblock small{display:block;font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--grey);margin-bottom:10px}
.tblock p{font-size:14.5px;margin:0 0 .3em}
.tblock ul{list-style:none;margin:0;padding:0;font-size:14.5px}
.tblock ul li{margin-bottom:.35em}
.tblock .about img{height:30px;width:auto;margin-bottom:12px}
.tblock .about p{color:var(--grey);font-size:14px;max-width:30em}
.tblock .sheetno{font-size:1.9rem;font-weight:300;letter-spacing:-.02em;line-height:1}
.copy{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;padding:18px 0 26px;font-size:12.5px;color:var(--grey);letter-spacing:.04em}
@media (max-width:1000px){.tblock{grid-template-columns:1fr 1fr}.tblock .about{grid-column:1/-1}}
@media (max-width:560px){.tblock{grid-template-columns:1fr}}

/* ---------- motion ---------- */
@keyframes up{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@keyframes draw{from{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0 0 0 0)}}
.hero .label{animation:up .7s var(--ease) both .05s}
.hero h1{animation:up .9s var(--ease) both .15s}
.hero .lead{animation:up .9s var(--ease) both .3s}
.hero .ctas{animation:up .9s var(--ease) both .42s}
.hero .frame img{animation:draw 1.2s var(--ease) both .25s}
.hero .dim{animation:up .8s var(--ease) both .9s}
.js .rv{opacity:0;transform:translateY(22px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.js .rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .js .rv{opacity:1;transform:none}
  html{scroll-behavior:auto}
}
@media print{.hdr,.form,.menu{display:none}body{background:#fff}}