/* Παντελάκης — Αδιατάρακτη Κοπή Μπετόν */
:root{
  --ink:#16171a; --ink-2:#2a2c31; --muted:#5d6068; --line:#e3e0da;
  --paper:#f7f5f1; --white:#fff;
  --brick:#b5301c; --brick-d:#8e2414; --spark:#ff7a1a;
  --steel:#9aa3ad; --night:#0f1115; --night-2:#171a20;
  --cad-bg:#0b0e13; --cad-grid:#141a22; --cad-line:#e8edf2; --cad-cut:#ff4d3d; --cad-dim:#ffd23f; --cad-hatch:#4a6b56; --cad-aux:#3fc7e0; --cad-steel:#7fa7ff;
  --radius:14px; --shadow:0 10px 30px rgba(10,12,16,.10);
  --max:1180px;
  --font:"Manrope",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --head:"Fira Sans Condensed","Manrope",system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--paper);line-height:1.65;font-size:17px}
img{max-width:100%;height:auto;display:block}
a{color:var(--brick);text-underline-offset:3px}
a:hover{color:var(--brick-d)}
h1,h2,h3{font-family:var(--head);line-height:1.12;letter-spacing:.2px;margin:0 0 .5em}
h1{font-size:clamp(2.1rem,5.4vw,4rem);font-weight:800;text-transform:uppercase}
h2{font-size:clamp(1.6rem,3.4vw,2.5rem);font-weight:800}
h3{font-size:1.25rem;font-weight:700}
p{margin:0 0 1em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;z-index:99;background:#fff;padding:8px 12px}
.eyebrow{font-family:var(--mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--brick);font-weight:700;margin-bottom:.8em;display:block}
.dark .eyebrow{color:var(--spark)}
.lead{font-size:1.15rem;color:var(--muted);max-width:62ch}
.dark .lead{color:#c3c7cf}

/* header */
.site-head{position:sticky;top:0;z-index:50;background:rgba(15,17,21,.94);backdrop-filter:blur(8px);border-bottom:1px solid #262a31}
.site-head .wrap{display:flex;align-items:center;gap:18px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff;flex-shrink:0}
.brand img{width:118px;height:auto}
.brand span{font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;color:#aeb4bd;line-height:1.3;text-transform:uppercase;display:none}
.nav{margin-left:auto;display:flex;gap:4px;align-items:center}
.nav a{color:#dfe2e7;text-decoration:none;font-weight:600;font-size:.93rem;padding:8px 10px;border-radius:8px}
.nav a:hover,.nav a[aria-current=page]{color:#fff;background:#252931}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:800;text-decoration:none;border-radius:999px;padding:13px 22px;border:2px solid transparent;font-size:1rem;cursor:pointer;font-family:var(--font);line-height:1.1}
.btn-primary{background:var(--brick);color:#fff}
.btn-primary:hover{background:var(--brick-d);color:#fff}
.btn-ghost{border-color:currentColor;color:#fff;background:transparent}
.btn-ghost:hover{background:#fff;color:var(--ink)}
.btn-light{border-color:var(--ink);color:var(--ink)}
.btn-light:hover{background:var(--ink);color:#fff}
.nav .btn{padding:10px 16px;margin-left:6px}
.menu-toggle{display:none;margin-left:auto;background:none;border:1px solid #3a3f48;color:#fff;border-radius:10px;padding:9px 12px;font:inherit;font-weight:700}
@media (min-width:1100px){.brand span{display:block}}
@media (max-width:980px){
  .menu-toggle{display:block}
  .nav{display:none;position:absolute;left:0;right:0;top:72px;background:#0f1115;flex-direction:column;align-items:stretch;padding:10px 16px 18px;border-bottom:1px solid #262a31}
  .nav.open{display:flex}
  .nav a{padding:12px}
  .nav .btn{margin:8px 0 0;justify-content:center}
}

/* hero */
.hero{position:relative;color:#fff;background:#0f1115;overflow:hidden}
.hero picture,.hero .hero-bg{position:absolute;inset:0}
.hero .hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.42}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(12,13,16,.96) 0%,rgba(12,13,16,.78) 48%,rgba(12,13,16,.25) 100%)}
.hero .wrap{position:relative;z-index:2;padding-top:clamp(48px,9vw,110px);padding-bottom:clamp(48px,8vw,96px)}
.hero-logo{width:min(300px,70vw);margin-bottom:22px;filter:drop-shadow(0 8px 24px rgba(0,0,0,.5))}
.hero h1 span{color:var(--spark);display:block}
.hero p.lead{color:#d6d9de;font-size:1.2rem}
.hero .ctas{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 30px}
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#2a2e36;border:1px solid #2a2e36;border-radius:12px;overflow:hidden;max-width:980px}
.facts div{background:rgba(18,20,25,.92);padding:14px 16px;font-size:.9rem;color:#c9cdd4}
.facts b{display:block;color:#fff;font-family:var(--head);font-size:1.12rem}
@media (max-width:760px){.facts{grid-template-columns:1fr 1fr}}

/* page head (subpages) */
.page-head{background:#0f1115;color:#fff;padding:54px 0 44px;border-bottom:4px solid var(--brick)}
.page-head h1{font-size:clamp(1.9rem,4.4vw,3.2rem)}
.crumbs{font-family:var(--mono);font-size:.78rem;color:#9aa1ab;margin-bottom:14px}
.crumbs a{color:#c9ced6}

/* sections */
section{padding:clamp(56px,8vw,96px) 0}
.dark{background:var(--night);color:#e9ebee}
.dark h2,.dark h3{color:#fff}
.white{background:#fff}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,64px);align-items:start}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media (max-width:900px){.grid-2,.grid-3{grid-template-columns:1fr}.grid-4{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.grid-4{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.dark .card{background:var(--night-2);border-color:#272b33;box-shadow:none}
.card h3 a{color:inherit;text-decoration:none}
.card .num{font-family:var(--mono);color:var(--brick);font-weight:700;font-size:.85rem}
.svc-card{display:flex;flex-direction:column}
.svc-card p{color:var(--muted);flex:1}
.svc-card .more{font-weight:800;text-decoration:none}
.answer{background:#fff;border-left:5px solid var(--brick);padding:22px 26px;border-radius:0 12px 12px 0;box-shadow:var(--shadow);font-size:1.08rem}
.answer strong{color:var(--ink)}
ul.ticks{list-style:none;padding:0;margin:0 0 1em}
ul.ticks li{position:relative;padding-left:30px;margin:.45em 0}
ul.ticks li::before{content:"";position:absolute;left:0;top:.5em;width:16px;height:9px;border-left:3px solid var(--brick);border-bottom:3px solid var(--brick);transform:rotate(-45deg)}
.dark ul.ticks li::before{border-color:var(--spark)}
.note{font-size:.92rem;color:var(--muted);border:1px dashed #cfc9bf;border-radius:10px;padding:12px 16px;background:#fbfaf7}
.dark .note{background:#151820;border-color:#343944;color:#aab0ba}
.steps{counter-reset:s;list-style:none;padding:0;margin:0}
.steps li{counter-increment:s;position:relative;padding:0 0 22px 62px}
.steps li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:0;width:44px;height:44px;border-radius:10px;background:var(--ink);color:#fff;font-family:var(--mono);font-weight:700;display:grid;place-items:center}
.dark .steps li::before{background:var(--brick)}
.steps li h3{margin-bottom:.25em;padding-top:8px}

/* case studies */
.case{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(24px,4vw,48px);padding:clamp(36px,5vw,56px) 0;border-top:1px solid var(--line)}
.case:first-of-type{border-top:0}
@media (max-width:900px){.case{grid-template-columns:1fr}}
.case-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.case-gallery a{display:block;border-radius:10px;overflow:hidden;background:#ddd;aspect-ratio:1/1}
.case-gallery a:first-child{grid-column:span 3;aspect-ratio:16/10}
.case-gallery img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.case-gallery a:hover img{transform:scale(1.04)}
.case table{width:100%;border-collapse:collapse;font-size:.95rem;margin:16px 0}
.case th,.case td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
.case th{width:38%;color:var(--muted);font-weight:600}
td.todo{background:#fff6cc;color:#7a5a00;font-style:italic}
.tag{display:inline-block;font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;background:#efe9e1;color:var(--brick-d);padding:4px 9px;border-radius:999px;margin:0 6px 6px 0}
.result{background:var(--ink);color:#fff;border-radius:12px;padding:16px 18px;margin-top:10px}
.result b{color:var(--spark)}
.case-card{overflow:hidden;padding:0}
.case-card img{aspect-ratio:4/3;object-fit:cover;width:100%}
.case-card .in{padding:18px 20px 22px}

/* gallery */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.gallery a{aspect-ratio:1;border-radius:10px;overflow:hidden;display:block;background:#222}
.gallery img{width:100%;height:100%;object-fit:cover}
@media (max-width:700px){.gallery{grid-template-columns:repeat(2,1fr)}}
.lightbox{position:fixed;inset:0;background:rgba(5,6,8,.92);display:none;align-items:center;justify-content:center;z-index:100;padding:20px}
.lightbox.open{display:flex}
.lightbox img{max-height:86vh;width:auto;border-radius:8px}
.lightbox figcaption{color:#ddd;text-align:center;margin-top:10px;font-size:.95rem}
.lightbox button{position:absolute;top:14px;right:16px;background:#fff;border:0;border-radius:999px;width:44px;height:44px;font-size:1.4rem;cursor:pointer}

/* regions */
.regions{columns:2;column-gap:40px}
.regions .region{break-inside:avoid;margin-bottom:28px}
@media (max-width:800px){.regions{columns:1}}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0 0;padding:0;list-style:none}
.chips li{background:#fff;border:1px solid var(--line);border-radius:999px;padding:3px 11px;font-size:.88rem}

/* faq */
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:10px;padding:0 20px}
.faq summary{cursor:pointer;font-weight:800;padding:18px 0;list-style:none;position:relative;padding-right:30px;font-size:1.05rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:0;top:14px;font-size:1.5rem;color:var(--brick)}
.faq details[open] summary::after{content:"–"}
.faq details>div{padding-bottom:18px;color:#3b3e45}
dl.gloss dt{font-weight:800;margin-top:14px}
dl.gloss dd{margin:4px 0 0;color:#3b3e45}

/* contact */
.contact-box{display:grid;grid-template-columns:1fr 1.2fr;gap:34px}
@media (max-width:900px){.contact-box{grid-template-columns:1fr}}
.contact-list{list-style:none;padding:0;margin:0}
.contact-list li{padding:12px 0;border-bottom:1px solid #2b2f37}
.contact-list a{color:#fff;font-weight:800;text-decoration:none;font-size:1.15rem}
form.quote{display:grid;gap:12px}
form.quote label{font-weight:700;font-size:.9rem;display:grid;gap:6px}
form.quote input,form.quote textarea,form.quote select{font:inherit;padding:12px 14px;border-radius:10px;border:1px solid #333944;background:#11141a;color:#fff}
form.quote textarea{min-height:120px}
.row-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:560px){.row-2{grid-template-columns:1fr}}

/* footer */
.site-foot{background:#0b0c0f;color:#a9afb8;padding:56px 0 90px;font-size:.93rem}
.site-foot a{color:#d9dce1}
.site-foot .cols{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:30px}
@media (max-width:800px){.site-foot .cols{grid-template-columns:1fr}}
.site-foot h3{color:#fff;font-size:1rem;font-family:var(--mono);letter-spacing:.1em;text-transform:uppercase}
.site-foot ul{list-style:none;padding:0;margin:0}
.site-foot li{margin:6px 0}
.legal{border-top:1px solid #22252c;margin-top:30px;padding-top:18px;font-size:.82rem}
.callbar{position:fixed;left:0;right:0;bottom:0;z-index:60;display:none;gap:1px;background:#2a2e36}
.callbar a{flex:1;text-align:center;padding:14px 8px;font-weight:800;text-decoration:none;color:#fff;background:var(--brick)}
.callbar a+a{background:#16181d}
@media (max-width:760px){.callbar{display:flex}}

/* ============ CAD ============ */
.cad{background:var(--cad-bg);border:1px solid #232a35;border-radius:14px;overflow:hidden;color:#cfd8e3;font-family:var(--mono);box-shadow:0 20px 50px rgba(0,0,0,.35)}
.cad-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:#141922;border-bottom:1px solid #232a35;padding:8px 12px;font-size:.78rem}
.cad-bar .dots{display:flex;gap:6px}.cad-bar .dots i{width:11px;height:11px;border-radius:50%;background:#3a4250;display:block}
.cad-bar .dots i:first-child{background:#ff5f57}.cad-bar .dots i:nth-child(2){background:#febc2e}.cad-bar .dots i:nth-child(3){background:#28c840}
.cad-bar .file{color:#9fb0c4}
.cad-layers{margin-left:auto;display:flex;gap:10px;flex-wrap:wrap}
.cad-layers label{display:flex;align-items:center;gap:5px;cursor:pointer;color:#aebbc9}
.cad-layers .sw{width:10px;height:10px;border-radius:2px;display:inline-block}
.cad-stage{display:grid;grid-template-columns:1.25fr 1fr;gap:0;background-image:linear-gradient(var(--cad-grid) 1px,transparent 1px),linear-gradient(90deg,var(--cad-grid) 1px,transparent 1px);background-size:24px 24px}
.cad-stage figure{margin:0;position:relative;border-right:1px solid #1d242f}
.cad-stage figure:last-child{border-right:0}
.cad-stage figcaption{position:absolute;right:12px;bottom:8px;font-size:.72rem;color:#7f93a8;letter-spacing:.1em}
.cad svg{width:100%;height:auto;display:block}
@media (max-width:900px){.cad-stage{grid-template-columns:1fr}.cad-stage figure{border-right:0;border-bottom:1px solid #1d242f}}
.cad-ctrl{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;padding:12px;border-top:1px solid #232a35;background:#10141b}
.cad-ctrl button{font-family:var(--mono);font-size:.8rem;background:#1b222d;color:#dfe7f0;border:1px solid #2c3644;border-radius:8px;padding:9px 12px;cursor:pointer}
.cad-ctrl button:hover{border-color:var(--cad-dim)}
.cad-ctrl button.play{background:var(--brick);border-color:var(--brick);color:#fff}
.cad-steps{display:flex;gap:4px;overflow-x:auto;scrollbar-width:thin}
.cad-steps button{white-space:nowrap;padding:8px 10px}
.cad-steps button[aria-current=true]{background:var(--cad-dim);color:#111;border-color:var(--cad-dim);font-weight:700}
.cad-info{display:grid;grid-template-columns:1fr 300px;border-top:1px solid #232a35}
@media (max-width:900px){.cad-info{grid-template-columns:1fr}}
.cad-desc{padding:16px 18px;font-family:var(--font);font-size:.98rem;color:#d6dde6;min-height:170px}
.cad-desc [data-cad-title]{font-family:var(--head);color:#fff;margin-bottom:.35em;font-size:1.3rem}
.cad-desc [data-cad-title] small{font-family:var(--mono);color:var(--cad-dim);font-size:.75rem;display:block;letter-spacing:.1em;margin-bottom:4px}
.titleblock{border-left:1px solid #232a35;font-size:.7rem;display:grid;grid-template-columns:1fr 1fr}
@media (max-width:900px){.titleblock{border-left:0;border-top:1px solid #232a35}}
.titleblock div{padding:7px 10px;border-bottom:1px solid #1d242f;border-right:1px solid #1d242f}
.titleblock div.full{grid-column:span 2}
.titleblock b{display:block;color:#e9eef4;font-size:.78rem;font-weight:700}
.titleblock span{color:#6f8296;letter-spacing:.08em}
.titleblock img{height:38px;width:auto}
.cad-cmd{display:flex;justify-content:space-between;gap:10px;padding:7px 12px;font-size:.74rem;background:#07090c;color:#8fe39b;border-top:1px solid #232a35;flex-wrap:wrap}
.cad-cmd .coords{color:#7f93a8}
/* svg styles */
.cad .ln{stroke:var(--cad-line);stroke-width:2;fill:none}
.cad .ln-thin{stroke:var(--cad-line);stroke-width:1;fill:none;opacity:.7}
.cad .conc{fill:url(#hatch);stroke:var(--cad-line);stroke-width:2}
.cad .conc-p{fill:url(#hatchP);stroke:var(--cad-line);stroke-width:2}
.cad .slab{fill:#1a212b;stroke:var(--cad-line);stroke-width:2}
.cad .col{fill:#2a3442;stroke:var(--cad-line);stroke-width:2}
.cad .cut{stroke:var(--cad-cut);stroke-width:3;fill:none;stroke-dasharray:14 6}
.cad .cutdraw{stroke:var(--cad-cut);stroke-width:4;fill:none}
.cad .dim{stroke:var(--cad-dim);stroke-width:1.2;fill:none}
.cad .dimt{fill:var(--cad-dim);font-family:var(--mono);font-size:15px}
.cad .txt{fill:#d7e1ec;font-family:var(--mono);font-size:14px}
.cad .txt-s{fill:#8fa3b8;font-family:var(--mono);font-size:12px}
.cad .txt-c{fill:var(--cad-cut);font-family:var(--mono);font-size:13px;font-weight:700}
.cad .txt-a{fill:var(--cad-aux);font-family:var(--mono);font-size:12.5px}
.cad .aux{stroke:var(--cad-aux);stroke-width:2;fill:none}
.cad .steel{stroke:var(--cad-steel);stroke-width:7;fill:none}
.cad .block{fill:url(#hatch);stroke:var(--cad-cut);stroke-width:1.5}
.cad .area{fill:#ffd23f;font-family:var(--head);font-weight:800;font-size:22px}
.cad .room{fill:rgba(63,199,224,.06)}
.cad .room-new{fill:rgba(255,210,63,.10);stroke:var(--cad-dim);stroke-dasharray:6 6;stroke-width:1.5}
.cad .saw{fill:none;stroke:var(--spark);stroke-width:2.5}
.cad .rail{stroke:#b9c3cf;stroke-width:6}
.cad [data-from]{transition:opacity .45s ease}
.cad .is-off{opacity:0;pointer-events:none}
.cad .lay-off{display:none}
@media (prefers-reduced-motion:reduce){.cad [data-from]{transition:none}}

.kw-cloud{display:flex;flex-wrap:wrap;gap:8px;padding:0;list-style:none}
.kw-cloud li a{display:inline-block;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 13px;font-size:.9rem;text-decoration:none;color:var(--ink)}
.kw-cloud li a:hover{border-color:var(--brick);color:var(--brick)}
.center{text-align:center}
.mt{margin-top:28px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.cad [data-draw]{stroke-dasharray:1;stroke-dashoffset:0}
.cad [data-saw]{transform:translateX(0)}
.cad [data-saw].run{animation:sawrun 2.6s ease-in-out forwards}
@keyframes sawrun{from{transform:translateX(0)}to{transform:translateX(300px)}}
.cad .blade{transform-box:fill-box;transform-origin:center;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.cad .blade,.cad [data-saw].run{animation:none}}
.case-gallery{align-content:start}
.page-head .lead{color:#c3c7cf}