/*
Theme Name: DBR Appalti
Theme URI: https://www.dbrgroup.eu
Author: P.A.N. srls - Francesco Vergallo
Description: Tema istituzionale custom per DBR Appalti S.r.l. Concept "blocco di cemento": struttura, peso, composizione. Editoriale, monocromatico, ad alto contrasto con accenti blu petrolio e rosso del brand.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.4
Text Domain: dbr-appalti
*/

/* ============================================================
   1. TOKENS / VARIABILI BRAND
   ============================================================ */
:root{
  --blu:#076B8E;
  --blu-d:#05536e;
  --blu-l:#1f8bb0;
  --rosso:#CD2933;
  --rosso-d:#a81e27;
  --ink:#101417;          /* nero cemento */
  --ink-2:#171c20;
  --concrete:#23282c;
  --concrete-2:#2d3338;
  --line:rgba(255,255,255,.12);
  --line-d:rgba(0,0,0,.12);
  --paper:#f4f3f1;
  --paper-2:#e9e7e3;
  --muted:#8b9298;
  --muted-l:#aeb4b9;
  --white:#ffffff;

  --ff-head:"Archivo",-apple-system,system-ui,sans-serif;
  --ff-body:"Inter",-apple-system,system-ui,sans-serif;

  --wrap:1280px;
  --gut:clamp(20px,5vw,80px);
  --sp:clamp(64px,9vw,140px); /* spazio verticale sezioni */
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ============================================================
   2. RESET / BASE
   ============================================================ */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--ff-body);
  background:var(--ink);
  color:var(--paper);
  font-size:17px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{font-family:var(--ff-head);font-weight:800;line-height:1.04;margin:0;letter-spacing:-.01em}
p{margin:0 0 1.1em}
::selection{background:var(--rosso);color:#fff}

.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gut)}
.eyebrow{
  font-family:var(--ff-head);font-weight:700;font-size:.72rem;letter-spacing:.32em;
  text-transform:uppercase;color:var(--blu-l);display:inline-flex;align-items:center;gap:.7em;
}
.eyebrow::before{content:"";width:34px;height:2px;background:var(--rosso)}
.sec-num{
  font-family:var(--ff-head);font-weight:800;font-size:.8rem;letter-spacing:.2em;
  color:var(--muted);
}

/* titoli wide stile logo */
.display{
  font-size:clamp(2.4rem,7vw,6rem);
  text-transform:uppercase;
  letter-spacing:-.02em;
  line-height:.98;
}
.h-sec{
  font-size:clamp(1.9rem,4.5vw,3.4rem);
  text-transform:uppercase;
  letter-spacing:-.01em;
}

/* ============================================================
   3. HEADER / NAV
   ============================================================ */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px var(--gut);
  transition:background .4s var(--ease),padding .4s var(--ease),border-color .4s;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(16,20,23,.86);
  backdrop-filter:blur(14px);
  padding:12px var(--gut);
  border-bottom:1px solid var(--line);
}
.brand img{height:46px;width:auto;transition:height .4s var(--ease)}
.site-header.scrolled .brand img{height:38px}
.nav{display:flex;align-items:center;gap:34px}
.nav a{
  font-family:var(--ff-head);font-weight:600;font-size:.82rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--paper);opacity:.82;position:relative;padding:6px 0;
  transition:opacity .25s;
}
.nav a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--rosso);
  transition:width .3s var(--ease);
}
.nav a:hover{opacity:1}
.nav a:hover::after{width:100%}
.nav .btn{margin-left:6px}
.btn{
  display:inline-flex;align-items:center;gap:.6em;
  font-family:var(--ff-head);font-weight:700;font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;
  background:var(--rosso);color:#fff;padding:13px 22px;border:none;
  transition:background .25s,transform .25s;
}
.btn:hover{background:var(--rosso-d);transform:translateY(-2px)}
.btn--ghost{background:transparent;border:1px solid var(--line);color:var(--paper)}
.btn--ghost:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn--blu{background:var(--blu)}.btn--blu:hover{background:var(--blu-d)}

.lang{display:flex;gap:8px;align-items:center;font-family:var(--ff-head);font-size:.78rem;font-weight:700;letter-spacing:.1em}
.lang a{opacity:.5}.lang a.active{opacity:1;color:var(--blu-l)}

.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;padding:8px}
.burger span{width:26px;height:2px;background:#fff;transition:.3s}

/* ============================================================
   4. HERO
   ============================================================ */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:flex-end;
  padding-bottom:clamp(50px,8vw,90px);overflow:hidden;
}
.hero__bg{position:absolute;inset:0;z-index:0}
.hero__bg img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.05)}
.hero__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,20,23,.55) 0%,rgba(16,20,23,.25) 40%,rgba(16,20,23,.92) 100%);
}
.hero__grid{position:absolute;inset:0;z-index:1;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:clamp(60px,8vw,120px) clamp(60px,8vw,120px);
  mask-image:linear-gradient(180deg,transparent,#000 30%,#000 70%,transparent);
  opacity:.5;
}
.hero__inner{position:relative;z-index:2;width:100%}
.hero h1{max-width:18ch}
.hero h1 .red{color:var(--rosso)}
.hero__lead{max-width:54ch;color:var(--muted-l);font-size:clamp(1rem,1.6vw,1.22rem);margin-top:1.4rem}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:2.2rem}
.hero__meta{
  display:flex;gap:clamp(24px,4vw,60px);margin-top:3rem;flex-wrap:wrap;
  border-top:1px solid var(--line);padding-top:1.6rem;
}
.hero__meta div span{display:block}
.hero__meta .k{font-family:var(--ff-head);font-weight:800;font-size:clamp(1.6rem,3vw,2.4rem);color:#fff}
.hero__meta .l{font-size:.74rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}
.scroll-hint{position:absolute;right:var(--gut);bottom:40px;z-index:2;writing-mode:vertical-rl;
  font-family:var(--ff-head);font-size:.7rem;letter-spacing:.3em;text-transform:uppercase;color:var(--muted);
  display:flex;align-items:center;gap:14px}
.scroll-hint::after{content:"";width:1px;height:50px;background:var(--muted);animation:scrollLine 2s var(--ease) infinite}
@keyframes scrollLine{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ============================================================
   5. SEZIONI GENERICHE
   ============================================================ */
section{position:relative}
.sec{padding-block:var(--sp)}
.sec--paper{background:var(--paper);color:var(--ink)}
.sec--paper .eyebrow{color:var(--blu)}
.sec--paper .sec-num{color:#b9b3a8}
.sec--concrete{background:var(--concrete)}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:clamp(36px,5vw,64px);flex-wrap:wrap}
.sec-head .lead{max-width:46ch;color:var(--muted)}
.sec--paper .sec-head .lead{color:#5a6066}

/* blocchi motif divisore */
.blocks{display:flex;gap:8px;align-items:flex-end;height:54px}
.blocks i{display:block;width:24px;background:var(--blu);animation:rise 1s var(--ease) both}
.blocks i:nth-child(1){height:40%}
.blocks i:nth-child(2){height:70%;background:var(--rosso)}
.blocks i:nth-child(3){height:100%}
@keyframes rise{from{transform:scaleY(0);transform-origin:bottom;opacity:0}to{transform:scaleY(1);opacity:1}}

/* ============================================================
   6. CHI SIAMO
   ============================================================ */
.about{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(36px,6vw,80px);align-items:center}
.about__media{position:relative}
.about__media img{filter:grayscale(1) contrast(1.05);width:100%;aspect-ratio:4/5;object-fit:cover}
.about__media .tag{position:absolute;left:-1px;bottom:24px;background:var(--rosso);color:#fff;
  font-family:var(--ff-head);font-weight:800;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;padding:12px 20px}
.about__body p{color:#4c5258}.sec--concrete .about__body p{color:var(--muted-l)}
.about__body .big{font-family:var(--ff-head);font-weight:700;font-size:clamp(1.3rem,2.4vw,1.8rem);line-height:1.25;color:inherit;margin-bottom:1.4rem;letter-spacing:-.01em}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin-top:2rem;background:var(--line-d)}
.facts div{background:var(--paper);padding:20px}
.sec--concrete .facts{background:var(--line)}.sec--concrete .facts div{background:var(--concrete)}
.facts .k{font-family:var(--ff-head);font-weight:800;font-size:1.9rem;color:var(--blu)}
.facts .l{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}

/* tre aziende */
.group{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:clamp(40px,5vw,64px)}
.group__card{border:1px solid var(--line-d);padding:30px;transition:.35s var(--ease);background:#fff}
.sec--concrete .group__card{border-color:var(--line);background:var(--ink-2)}
.group__card:hover{transform:translateY(-6px);border-color:var(--blu)}
.group__card .n{font-family:var(--ff-head);font-weight:800;font-size:.75rem;letter-spacing:.2em;color:var(--rosso)}
.group__card h3{font-size:1.4rem;margin:.6rem 0;text-transform:uppercase}
.group__card p{font-size:.92rem;color:var(--muted);margin:0}

/* ============================================================
   7. SERVIZI
   ============================================================ */
.services{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line)}
.service{
  background:var(--ink);padding:clamp(28px,3.5vw,46px);position:relative;overflow:hidden;
  transition:background .4s var(--ease);min-height:260px;display:flex;flex-direction:column;
}
.service::before{content:attr(data-n);position:absolute;top:24px;right:28px;font-family:var(--ff-head);
  font-weight:800;font-size:3.2rem;color:var(--line);transition:.4s}
.service:hover{background:var(--blu-d)}
.service:hover::before{color:rgba(255,255,255,.18)}
.service h3{font-size:1.45rem;text-transform:uppercase;margin-bottom:.7rem;max-width:14ch}
.service p{color:var(--muted-l);font-size:.96rem;margin:0}
.service .soa{margin-top:auto;padding-top:18px;display:flex;gap:8px;flex-wrap:wrap}
.service .chip{font-family:var(--ff-head);font-weight:700;font-size:.72rem;letter-spacing:.1em;
  border:1px solid var(--line);padding:5px 10px;color:var(--paper)}

/* ============================================================
   8. CERTIFICAZIONI / SOA
   ============================================================ */
.soa-wrap{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.soa-card{border:1px solid var(--line-d);background:#fff;padding:32px;position:relative;transition:.35s var(--ease)}
.soa-card:hover{transform:translateY(-6px);box-shadow:0 24px 50px -24px rgba(7,107,142,.4)}
.soa-card .cat{font-family:var(--ff-head);font-weight:800;font-size:2.6rem;color:var(--blu);line-height:1}
.soa-card h3{font-size:1.05rem;margin:.8rem 0;text-transform:uppercase;color:var(--ink)}
.soa-card .class{display:inline-block;background:var(--ink);color:#fff;font-family:var(--ff-head);font-weight:700;
  font-size:.78rem;letter-spacing:.12em;padding:6px 12px;margin-bottom:.7rem}
.soa-card .imp{font-size:.86rem;color:#5a6066;margin:0}
.cert-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
.cert{display:flex;align-items:center;gap:14px;border:1px solid var(--line-d);padding:16px 22px;background:var(--paper-2)}
.cert .ico{width:42px;height:42px;flex:0 0 42px;background:var(--blu);display:grid;place-items:center;color:#fff;font-family:var(--ff-head);font-weight:800;font-size:.7rem;text-align:center;line-height:1.05}
.cert .t{font-weight:600;font-size:.92rem;color:var(--ink)}
.cert .s{font-size:.78rem;color:#6a7076}
.soa-note{margin-top:28px;font-size:.82rem;color:#7a8086;border-left:3px solid var(--rosso);padding-left:16px}

/* ============================================================
   9. PORTFOLIO
   ============================================================ */
.folio{display:grid;grid-template-columns:repeat(12,1fr);gap:14px}
.folio__item{position:relative;overflow:hidden;background:var(--ink-2);min-height:260px}
.folio__item img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  filter:grayscale(1) contrast(1.04);transition:transform .8s var(--ease),filter .6s}
.folio__item:hover img{transform:scale(1.06);filter:grayscale(0) contrast(1.05)}
.folio__item::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(16,20,23,.9));z-index:1}
.folio__cap{position:absolute;left:0;bottom:0;z-index:2;padding:26px;width:100%}
.folio__cap .c{font-family:var(--ff-head);font-weight:700;font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--rosso)}
.folio__cap h3{font-size:1.35rem;text-transform:uppercase;margin-top:.4rem;transform:translateY(6px);transition:.4s var(--ease)}
.folio__cap .loc{font-size:.82rem;color:var(--muted-l);opacity:0;transition:.4s .05s var(--ease)}
.folio__item:hover .folio__cap h3{transform:translateY(0)}
.folio__item:hover .folio__cap .loc{opacity:1}
.folio .big{grid-column:span 7;min-height:520px}
.folio .tall{grid-column:span 5;min-height:520px}
.folio .third{grid-column:span 4;min-height:340px}
.folio .half{grid-column:span 6;min-height:360px}

/* Progetto in evidenza */
.feature{border:1px solid var(--line);background:var(--ink-2);padding:clamp(28px,4vw,52px);margin-bottom:24px}
.feature__head{max-width:880px}
.feature__title{font-family:var(--ff-head);font-weight:800;text-transform:uppercase;font-size:clamp(1.5rem,3vw,2.4rem);line-height:1.05;margin-top:.5rem;color:#fff}
.feature__loc{display:inline-block;margin-top:.7rem;font-size:.85rem;letter-spacing:.04em;color:var(--blu);font-weight:600}
.feature__intro{margin-top:1.2rem;color:var(--muted-l);font-size:1.02rem;line-height:1.7}
.feature__scope{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;margin-top:32px;background:var(--line)}
.scope-item{background:var(--ink-2);padding:22px 24px}
.scope-item h4{font-family:var(--ff-head);font-weight:700;text-transform:uppercase;font-size:.92rem;letter-spacing:.04em;color:#fff;position:relative;padding-left:16px}
.scope-item h4::before{content:"";position:absolute;left:0;top:.15em;width:4px;height:1em;background:var(--rosso)}
.scope-item p{margin-top:.5rem;color:var(--muted);font-size:.9rem;line-height:1.6}

/* Card cliccabili */
.folio__item.is-link{cursor:pointer}
.folio__item.is-link:focus-visible{outline:2px solid var(--blu);outline-offset:3px}
.folio__more{position:absolute;top:16px;right:16px;z-index:3;width:40px;height:40px;border-radius:50%;
  background:rgba(255,255,255,.16);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:1.6rem;font-weight:300;line-height:1;transition:.35s var(--ease);opacity:.85}
.folio__item.is-link:hover .folio__more{background:var(--rosso);opacity:1;transform:rotate(90deg)}

/* Modale progetto */
.modal{position:fixed;inset:0;z-index:200;display:none}
.modal.open{display:block}
.modal__backdrop{position:absolute;inset:0;background:rgba(8,10,12,.8);backdrop-filter:blur(3px)}
.modal__panel{position:relative;z-index:1;max-width:860px;margin:6vh auto;background:var(--ink-2);
  border:1px solid var(--line);padding:clamp(28px,4vw,52px);max-height:88vh;overflow:auto;animation:modalIn .35s var(--ease)}
.modal__panel .eyebrow{color:var(--rosso)}
.modal__close{position:absolute;top:14px;right:14px;width:42px;height:42px;border:1px solid var(--line);
  background:transparent;color:#fff;font-size:1.5rem;cursor:pointer;line-height:1;transition:.3s}
.modal__close:hover{background:var(--rosso);border-color:var(--rosso)}
@keyframes modalIn{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:780px){.feature__scope{grid-template-columns:1fr}.modal__panel{margin:0;min-height:100vh;max-height:none;border:0}}

/* ============================================================
   10. TEAM
   ============================================================ */
.team-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}
.team-grid img{aspect-ratio:1;object-fit:cover;filter:grayscale(1) contrast(1.05);transition:.5s var(--ease)}
.team-grid img:hover{filter:grayscale(0)}

/* ============================================================
   11. CONTATTI
   ============================================================ */
.contact{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(36px,6vw,80px)}
.contact__info .line{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--line)}
.contact__info .line .l{font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);flex:0 0 120px;padding-top:3px}
.contact__info .line .v{font-size:1.05rem}
.contact__info .line .v a:hover{color:var(--blu-l)}
.cform{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.cform .full{grid-column:1/-1}
.cform input,.cform textarea{
  width:100%;background:var(--ink-2);border:1px solid var(--line);color:#fff;
  padding:15px 16px;font-family:var(--ff-body);font-size:.95rem;transition:border-color .25s;
}
.cform input:focus,.cform textarea:focus{outline:none;border-color:var(--blu)}
.cform textarea{min-height:130px;resize:vertical}
.cform label{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);display:block;margin-bottom:6px}

/* ============================================================
   12. FOOTER
   ============================================================ */
.site-footer{background:var(--ink-2);border-top:1px solid var(--line);padding-block:clamp(50px,6vw,80px)}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:46px;border-bottom:1px solid var(--line)}
.site-footer img.flogo{height:48px;margin-bottom:20px}
.site-footer .fdesc{color:var(--muted);max-width:38ch;font-size:.94rem}
.fcol h4{font-family:var(--ff-head);font-size:.78rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-bottom:18px}
.fcol a,.fcol p{display:block;color:var(--paper);opacity:.85;font-size:.94rem;margin-bottom:10px}
.fcol a:hover{color:var(--blu-l);opacity:1}
.foot-bot{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-top:26px;font-size:.8rem;color:var(--muted)}
.foot-bot a:hover{color:var(--paper)}

/* ============================================================
   13. ANIMAZIONI SCROLL-REVEAL
   ============================================================ */
[data-reveal]{opacity:0;transform:translateY(34px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
[data-reveal].in{opacity:1;transform:none}
[data-reveal][data-delay="1"]{transition-delay:.08s}
[data-reveal][data-delay="2"]{transition-delay:.16s}
[data-reveal][data-delay="3"]{transition-delay:.24s}
@media (prefers-reduced-motion:reduce){[data-reveal]{opacity:1;transform:none;transition:none}*{scroll-behavior:auto}}

/* ============================================================
   14. RESPONSIVE
   ============================================================ */
@media (max-width:1024px){
  .about,.contact{grid-template-columns:1fr}
  .folio .big,.folio .tall{grid-column:span 12;min-height:420px}
  .folio .third{grid-column:span 6}
  .team-grid{grid-template-columns:repeat(4,1fr)}
}
@media (max-width:780px){
  .nav{position:fixed;inset:0;background:rgba(16,20,23,.98);backdrop-filter:blur(20px);
    flex-direction:column;justify-content:center;gap:26px;transform:translateX(100%);transition:transform .45s var(--ease);z-index:90}
  .nav.open{transform:none}
  .nav a{font-size:1.1rem}
  .burger{display:flex;z-index:100}
  .burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .burger.open span:nth-child(2){opacity:0}
  .burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  /* HERO mobile: niente sovrapposizione con header fisso, contenuto che respira */
  .hero{align-items:flex-start;min-height:auto;padding-top:130px;padding-bottom:60px}
  .hero h1{max-width:none}
  .hero__lead{margin-top:1.1rem}
  .hero__cta{margin-top:1.8rem}
  .hero__meta{margin-top:2.2rem;gap:20px 36px}
  .scroll-hint{display:none}
  .services,.soa-wrap,.group,.facts{grid-template-columns:1fr}
  .folio__item{grid-column:span 12!important}
  .folio .third,.folio .half{grid-column:span 12}
  .cform{grid-template-columns:1fr}
  .foot-top{grid-template-columns:1fr;gap:30px}
  .team-grid{grid-template-columns:repeat(3,1fr)}
  .hero__meta{gap:24px}
}