/* ============================================================
   ELDRAN — Sito vetrina
   Registro editoriale-fotografico, corporate/istituzionale.
   Riferimenti: Catella, Evox Consulting.
   ============================================================ */

:root{
  --ink:#15181d;
  --paper:#ffffff;
  --paper-2:#f4f3ef;
  --navy:#0e2438;
  --navy-2:#0a1a2b;
  --muted:#585f68;
  --muted-2:#8b909a;
  --line:rgba(21,24,29,.13);
  --line-2:rgba(21,24,29,.08);
  --line-light:rgba(255,255,255,.20);
  --accent:#1f5c96;

  --sans:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --serif:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;

  --container:1320px;
  --gutter:clamp(20px,3.5vw,56px);
  --nav-h:64px;
  --shadow:0 30px 70px -34px rgba(14,36,56,.42);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:15.5px;line-height:1.55;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
strong{font-weight:600;color:var(--ink)}

.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:var(--gutter)}
.skip-link{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:300}
.skip-link:focus{left:12px;top:12px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* ---------- type helpers ---------- */
.kicker{
  font-size:12px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);display:flex;align-items:center;gap:12px;margin-bottom:26px;flex-wrap:wrap;
}
.kicker::before{content:"";width:26px;height:1px;background:var(--accent);flex:none}
.kicker--light{color:rgba(255,255,255,.82)}
.kicker--light::before{background:rgba(255,255,255,.75)}

.display{
  font-family:var(--serif);font-weight:640;font-style:normal;
  font-size:clamp(1.4rem,2.2vw,2.15rem);line-height:1.16;letter-spacing:-.022em;color:var(--ink);overflow-wrap:break-word;
}
.display--xl{font-size:clamp(1.7rem,2.8vw,2.7rem);line-height:1.1}
.display--light{color:#fff}

.lead{font-size:clamp(.98rem,1vw,1.08rem);line-height:1.58;color:var(--muted);max-width:60ch;margin-top:18px}
.lead--light{color:rgba(255,255,255,.85);max-width:60ch}

.inline-link{color:var(--accent);font-weight:600;border-bottom:1px solid rgba(31,92,150,.35);padding-bottom:2px;transition:border-color .2s}
.inline-link:hover{border-color:var(--accent)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--sans);font-size:13.5px;font-weight:550;letter-spacing:0;
  padding:9px 16px;border-radius:7px;border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn--solid{background:var(--navy);color:#fff}
.btn--solid:hover{background:var(--navy-2);transform:translateY(-1px)}
.btn--line{background:transparent;color:var(--ink);border-color:var(--line)}
.btn--line:hover{border-color:var(--ink)}
.btn--solid-light{background:#fff;color:var(--navy)}
.btn--solid-light:hover{background:#eef1f4;transform:translateY(-1px)}
.btn--ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn--ghost-light:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn--lg{padding:11px 20px;font-size:14px}
.btn--block{width:100%}

/* ============================================================
   NAV
   ============================================================ */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;color:var(--ink);background:rgba(252,252,250,.86);backdrop-filter:saturate(160%) blur(12px);-webkit-backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid transparent;transition:background .3s ease,border-color .3s ease,box-shadow .3s ease}
.nav__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--nav-h)}
.brand{display:inline-flex;align-items:center;gap:11px}
.brand__mark{border-radius:6px}
.brand__word{font-family:var(--sans);font-size:19px;font-weight:650;letter-spacing:-.01em;line-height:1}
.nav__links{display:flex;gap:34px}
.nav__links a{font-size:14px;font-weight:500;color:var(--muted);transition:color .16s}
.nav__links a:hover{color:var(--ink)}
.nav__links a:hover{opacity:1}
.nav__actions{display:flex;align-items:center;gap:14px}
.nav__burger{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:8px;cursor:pointer}
.nav__burger span{width:22px;height:2px;background:currentColor;border-radius:2px;transition:transform .25s ease}
.nav__burger[aria-expanded="true"] span:first-child{transform:translateY(7px) rotate(45deg)}
.nav__burger[aria-expanded="true"] span:last-child{transform:translateY(0) rotate(-45deg)}

/* stronger border once scrolled */
.nav--solid{background:rgba(252,252,250,.95);border-bottom-color:var(--line);box-shadow:0 1px 0 rgba(21,24,29,.02)}

.nav__mobile{display:none;flex-direction:column;background:var(--navy);color:#fff;padding:12px var(--gutter) 26px}
.nav__mobile a{font-size:16px;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.12)}

/* ============================================================
   HERO
   ============================================================ */
.hero{position:relative;overflow:hidden;
  background:linear-gradient(180deg,#eef1f6,#e7ebf1);
  padding:calc(var(--nav-h) + clamp(44px,5.5vw,84px)) 0 clamp(48px,5.5vw,80px);border-bottom:1px solid var(--line)}
.hero__head,.hero__shot{position:relative;z-index:1}
.hero__title{font-weight:680;color:var(--ink);font-size:clamp(1.9rem,3.1vw,2.9rem);line-height:1.08;letter-spacing:-.03em;overflow-wrap:break-word;max-width:18ch}
.hero__sub{color:var(--muted);font-size:clamp(1rem,1.05vw,1.12rem);line-height:1.55;max-width:52ch;margin-top:18px}
.hero__cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.hero__cta--center{justify-content:center}
.hero__trust{margin-top:22px;font-size:12px;letter-spacing:.03em;color:var(--muted-2)}
.hero__shot{width:100%;max-width:var(--container);margin:clamp(40px,4.5vw,64px) auto 0;padding-inline:var(--gutter)}
.hero__shot img{width:100%;height:auto;border:1px solid var(--line);border-radius:12px;box-shadow:0 40px 80px -44px rgba(12,13,15,.30),0 6px 20px -12px rgba(12,13,15,.09);display:block}
@media(max-width:560px){.hero__cta{flex-direction:column;align-items:stretch}.hero__cta .btn{width:100%}}

/* ============================================================
   SECTIONS
   ============================================================ */
.section{padding:clamp(56px,6.5vw,100px) 0;scroll-margin-top:var(--nav-h)}
.section--tight{padding:clamp(56px,7vw,100px) 0}
.section--alt{background:var(--paper-2);border-block:1px solid var(--line-2)}
.section__head{max-width:38ch;margin-bottom:clamp(28px,3.5vw,48px)}
.section__note{margin-top:34px;font-size:13.5px;color:var(--muted-2);letter-spacing:.01em}

/* ---------- editorial (positioning) ---------- */
.editorial{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,72px);align-items:start}
.editorial__lead .display{margin:0}
.editorial__body p{color:var(--muted);font-size:clamp(1.02rem,1.2vw,1.15rem);line-height:1.7;margin-bottom:20px}
.editorial__body p:last-child{margin-bottom:0;margin-top:8px}
.editorial__figure{margin:clamp(48px,6vw,88px) auto 0;width:100%;max-width:var(--container);padding-inline:var(--gutter)}
.editorial__figure img{width:100%;height:clamp(240px,28vw,420px);object-fit:cover;border-radius:12px}
@media (max-width:820px){.editorial{grid-template-columns:1fr;gap:22px}}

/* ---------- split (text + frame) ---------- */
.split{display:grid;grid-template-columns:1fr 1.08fr;gap:clamp(34px,5vw,80px);align-items:center}
.split--rev .split__text{order:2}
.split__text .display{margin-bottom:0}
.split-wide{margin-top:clamp(40px,5vw,64px)}
@media (max-width:860px){
  .split{grid-template-columns:1fr;gap:36px}
  .split--rev .split__text{order:0}
}

.frame{margin:0}
.frame img{width:100%;height:auto;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);background:#fff}
.frame figcaption{margin-top:16px;font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted-2)}
.frame--wide img{width:100%}

/* ---------- ticks ---------- */
.ticks{margin-top:30px;display:flex;flex-direction:column;gap:15px}
.ticks li{position:relative;padding-left:28px;color:var(--muted);font-size:14.5px;line-height:1.5}
.ticks li::before{content:"";position:absolute;left:2px;top:6px;width:9px;height:5px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg)}

/* ============================================================
   PHOTOBANDS
   ============================================================ */
.photoband{position:relative;isolation:isolate;display:grid;align-items:center;min-height:clamp(460px,66vh,640px);padding:clamp(64px,9vw,120px) 0;overflow:hidden}
.photoband--tall{min-height:clamp(540px,80vh,760px)}
.photoband--cta{min-height:clamp(520px,74vh,700px)}
.photoband__bg{position:absolute;inset:0;z-index:-2;background-size:cover;background-position:center}
.photoband__scrim{position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(8,20,32,.72),rgba(8,20,32,.6))}
.photoband__scrim--left{background:linear-gradient(90deg,rgba(8,20,32,.86) 0%,rgba(8,20,32,.55) 55%,rgba(8,20,32,.35) 100%)}
.photoband__content .display{max-width:20ch}
.photoband__content .lead{max-width:58ch}
.photoband--stats .photoband__content .display{max-width:26ch}
.photoband__content--center{text-align:center}
.photoband__content--center .display,.photoband__content--center .lead{margin-inline:auto}
.photoband__content--center .hero__cta{justify-content:center}
.photoband__src{margin-top:30px;font-size:12.5px;color:rgba(255,255,255,.6);letter-spacing:.02em}

/* stats within photoband */
.photoband--stats .display{margin-bottom:0}
.statgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:clamp(40px,5vw,60px);background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.16)}
.statc{background:rgba(8,20,32,.28);backdrop-filter:blur(2px);padding:26px 22px;display:flex;flex-direction:column;gap:12px}
.statc__n{font-family:var(--serif);font-weight:600;color:#fff;font-size:clamp(1.9rem,3.2vw,2.7rem);line-height:1;letter-spacing:-.01em}
.statc__l{font-size:13px;color:rgba(255,255,255,.78);line-height:1.45}
@media (max-width:820px){.statgrid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:460px){.statgrid{grid-template-columns:1fr}}

/* ============================================================
   FASCICOLO (navy band)
   ============================================================ */
.fascicolo{background:var(--navy);color:#fff;padding:clamp(58px,7vw,104px) 0;border-block:1px solid rgba(255,255,255,.08)}
.fascicolo__inner{display:grid;grid-template-columns:1.12fr .88fr;gap:clamp(36px,5vw,88px);align-items:center}
.fascicolo__text{max-width:34ch}
.fascicolo .display{color:#fff}
.fascicolo .lead{color:rgba(255,255,255,.82)}
.fascicolo__list{border-top:1px solid rgba(255,255,255,.16)}
.fascicolo__list li{position:relative;padding:15px 0 15px 30px;border-bottom:1px solid rgba(255,255,255,.12);font-size:15px;color:rgba(255,255,255,.9)}
.fascicolo__list li::before{content:"";position:absolute;left:2px;top:21px;width:10px;height:6px;border-left:2px solid #7fb0e6;border-bottom:2px solid #7fb0e6;transform:rotate(-45deg)}
@media (max-width:860px){.fascicolo__inner{grid-template-columns:1fr;gap:36px}.fascicolo__text{max-width:none}}

/* ============================================================
   MODULES (editorial numbered grid)
   ============================================================ */
.modules{display:grid;grid-template-columns:repeat(4,1fr);gap:0 clamp(24px,3vw,44px)}
.modules li{padding:22px 0 20px;border-top:1px solid var(--line)}
.modules__n{font-size:12.5px;font-weight:600;color:var(--accent);letter-spacing:.08em;font-variant-numeric:tabular-nums}
.modules h3{font-size:15.5px;font-weight:600;margin:11px 0 6px;letter-spacing:-.01em}
.modules p{font-size:14px;color:var(--muted);line-height:1.5}
@media (max-width:1000px){.modules{grid-template-columns:repeat(2,1fr);gap:0 clamp(24px,4vw,48px)}}
@media (max-width:520px){.modules{grid-template-columns:1fr}}

/* ============================================================
   GRID3 (security cards)
   ============================================================ */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{border:1px solid var(--line);border-radius:12px;padding:24px 26px;background:var(--paper);transition:border-color .18s ease,box-shadow .18s ease}
.card:hover{border-color:rgba(12,13,15,.18);box-shadow:0 10px 30px -18px rgba(12,13,15,.18)}
.section--alt .card{background:#fff}
.card h3{font-size:15.5px;font-weight:600;margin-bottom:9px}
.card p{color:var(--muted);font-size:14.5px;line-height:1.5}
@media (max-width:860px){.grid3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.grid3{grid-template-columns:1fr}}

/* ============================================================
   STEPS
   ============================================================ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,3vw,40px)}
.step{border-top:2px solid var(--ink);padding-top:22px}
.step__n{font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.08em}
.step h3{font-size:1.1rem;font-weight:600;margin:12px 0 8px;letter-spacing:-.01em}
.step p{color:var(--muted);font-size:15px;line-height:1.55}
@media (max-width:760px){.steps{grid-template-columns:1fr;gap:4px}.step{padding:24px 0}}

/* ============================================================
   PRICING
   ============================================================ */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}
.tier{position:relative;border:1px solid var(--line);border-radius:12px;padding:32px 34px 36px;background:var(--paper);transition:border-color .18s ease,box-shadow .18s ease}
.tier:not(.tier--pop):hover{border-color:rgba(12,13,15,.18)}
.tier--pop{border:1.5px solid var(--navy);box-shadow:var(--shadow)}
.tier__flag{position:absolute;top:-12px;left:36px;background:var(--navy);color:#fff;font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;padding:5px 12px;border-radius:3px}
.tier__label{font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.tier__price{font-family:var(--serif);font-weight:600;font-size:clamp(2.9rem,3.4vw,3.8rem);line-height:1;margin-top:18px;letter-spacing:-.01em}
.tier__price span{display:block;font-family:var(--sans);font-size:14px;font-weight:500;color:var(--muted);letter-spacing:0;margin-top:12px}
.services__title{font-family:var(--sans);font-size:13px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:clamp(44px,4.5vw,64px) 0 18px}
.services{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc{border:1px solid var(--line);border-radius:10px;padding:28px 32px;background:var(--paper);display:flex;flex-direction:column;gap:9px}
.svc__k{font-size:15px;font-weight:600;color:var(--ink)}
.svc__v{font-family:var(--serif);font-weight:600;font-size:2rem;line-height:1;color:var(--ink);letter-spacing:-.01em}
.svc__v em{font-family:var(--sans);font-style:normal;font-size:13px;font-weight:500;color:var(--muted);margin-left:5px}
.svc__n{font-size:13.5px;color:var(--muted)}
.prezzi__cta{margin-top:clamp(44px,4.5vw,60px);text-align:center}
@media (max-width:860px){.tiers,.services{grid-template-columns:1fr;max-width:520px;margin-inline:auto}}

/* ============================================================
   FAQ
   ============================================================ */
.faq{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(30px,5vw,72px);align-items:start}
.faq__head .display{margin:0}
.faq__list details{border-bottom:1px solid var(--line)}
.faq__list summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:19px 0;font-size:15px;font-weight:550}
.faq__list summary::-webkit-details-marker{display:none}
.faq__list summary i{position:relative;width:15px;height:15px;flex:none}
.faq__list summary i::before,.faq__list summary i::after{content:"";position:absolute;background:var(--ink);transition:transform .25s ease}
.faq__list summary i::before{left:50%;top:0;width:1.5px;height:100%;transform:translateX(-50%)}
.faq__list summary i::after{top:50%;left:0;height:1.5px;width:100%;transform:translateY(-50%)}
details[open] summary i::before{transform:translateX(-50%) scaleY(0)}
.faq__list p{color:var(--muted);font-size:15px;line-height:1.65;padding:0 0 24px;max-width:62ch}
@media (max-width:760px){.faq{grid-template-columns:1fr;gap:20px}}

/* ============================================================
   FOOTER
   ============================================================ */
.footer{background:var(--navy);color:rgba(255,255,255,.75);padding:72px 0 30px}
.footer__inner{display:grid;grid-template-columns:2.2fr 1fr 1fr 1fr;gap:40px}
.footer .brand__word{color:#fff}
.footer__desc{margin-top:16px;font-size:13.5px;line-height:1.6;color:rgba(255,255,255,.6);max-width:36ch}
.footer__col h4{font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.45);margin-bottom:14px}
.footer__col a{display:block;padding:6px 0;font-size:13.5px;color:rgba(255,255,255,.72);transition:color .16s}
.footer__col a:hover{color:#fff}
.footer__base{display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.14);font-size:12.5px;color:rgba(255,255,255,.55)}
.footer__norm{font-size:12px;letter-spacing:.02em;color:rgba(255,255,255,.5);margin-top:14px}
.footer__note{margin-top:16px;font-size:11.5px;color:rgba(255,255,255,.4)}
@media (max-width:820px){.footer__inner{grid-template-columns:1fr 1fr}.footer__brand{grid-column:span 2}}
@media (max-width:520px){.footer__inner{grid-template-columns:1fr}.footer__brand{grid-column:span 1}}

/* ============================================================
   REVEAL
   ============================================================ */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .8s cubic-bezier(.22,.7,.2,1),transform .8s cubic-bezier(.22,.7,.2,1)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ============================================================
   RESPONSIVE NAV
   ============================================================ */
.nav__mobile:not([hidden]){display:flex}
@media (max-width:560px){
  .hero__cta{flex-direction:column;align-items:stretch}
  .hero__cta .btn{width:100%}
}
@media (max-width:900px){
  .nav__links{display:none}
  .nav__actions .btn--line{display:none}
  .nav__burger{display:flex}
}