/*
Theme Name: Arte3D Studio
Theme URI: https://arte3dstudio.it
Author: Six Studio
Description: Tema WordPress su misura per Arte3D Studio, studio di progettazione, pratiche edilizie e rendering a Cesena (FC). Layout a pagina unica con navigazione ad ancore e modulo di contatto integrato via wp_mail.
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: arte3dstudio
*/

:root{
  --bg:#e7e7e5;
  --bg-alt:#dcdcd9;
  --paper:#f7f7f6;
  --ink:#1c1c1b;
  --ink-dim:#666663;
  --ink-faint:#9b9a96;
  --line:#cccbc7;
  --line-strong:#b7b6b1;
  --accent:#0d6d74;
  --accent-warm:#0d6d74;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
::selection{background:var(--accent);color:#fff;}

body{
  background:var(--bg);
  color:var(--ink);
  font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
  font-weight:400;
}
.serif{font-family:'Space Grotesk',sans-serif;}
.mono{font-family:'JetBrains Mono',monospace;}

/* ---------- header ---------- */
header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 6vw;
  background:rgba(231,231,229,.86);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.logo img{height:26px;width:auto;display:block;}
nav{display:flex;gap:30px;align-items:center;}
nav a{
  color:var(--ink-dim);text-decoration:none;
  font-family:'JetBrains Mono',monospace;font-size:11.5px;letter-spacing:.09em;text-transform:uppercase;
  transition:color .2s;padding:4px 0;position:relative;
}
nav a::after{content:'';position:absolute;left:0;right:0;bottom:-3px;height:1px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;}
nav a:hover{color:var(--ink);}
nav a:hover::after{transform:scaleX(1);}
nav a.cta{color:var(--paper);background:var(--ink);padding:9px 18px;border-radius:2px;}
nav a.cta::after{display:none;}
nav a.cta:hover{background:var(--accent-warm);color:var(--paper);}

.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:6px;}
.nav-toggle span{width:20px;height:1px;background:var(--ink);display:block;}

main{padding-top:0;display:block;}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease, transform .7s ease;}
.reveal.in{opacity:1;transform:translateY(0);}

/* ---------- HERO ---------- */
.hero{
  padding:150px 6vw 70px;position:relative;
}
.hero-inner{max-width:1180px;margin:0 auto;width:100%;}
.hero .kicker{font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--accent-warm);margin-bottom:26px;}
.hero h1{
  font-family:'Space Grotesk',sans-serif;font-weight:500;
  font-size:clamp(2.6rem,7vw,5.6rem);line-height:1.05;letter-spacing:-.02em;max-width:980px;color:var(--ink);
}
.hero h1 em{font-style:normal;color:var(--accent);}
.hero p.lead{max-width:520px;color:var(--ink-dim);font-size:17px;line-height:1.75;margin-top:34px;}
.hero-num{
  position:absolute;right:6vw;bottom:60px;font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--ink-faint);
  writing-mode:vertical-rl;letter-spacing:.15em;text-transform:uppercase;
}
.scroll-cue{margin-top:40px;display:flex;align-items:center;gap:12px;color:var(--ink-faint);font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;}
.scroll-cue .line{width:36px;height:1px;background:var(--ink-faint);animation:pulse-line 2s ease-in-out infinite;}
@keyframes pulse-line{0%,100%{opacity:.4;}50%{opacity:1;}}

/* Hero background slider (shown only once at least one image is uploaded). */
.hero.has-bg{min-height:82vh;display:flex;align-items:center;}
.hero-bg-slider{position:absolute;inset:0;z-index:0;overflow:hidden;}
.hero-bg-slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity 1.4s ease;}
.hero-bg-slide.active{opacity:1;}
.hero-bg-overlay{position:absolute;inset:0;background:linear-gradient(180deg, rgba(15,15,14,.6), rgba(15,15,14,.42));}
.hero.has-bg .hero-inner,
.hero.has-bg .hero-num{position:relative;z-index:2;}
.hero.has-bg .kicker{color:#fff;}
.hero.has-bg h1{color:#fff;}
.hero.has-bg p.lead{color:rgba(255,255,255,.86);}
.hero.has-bg .scroll-cue{color:rgba(255,255,255,.75);}
.hero.has-bg .scroll-cue .line{background:rgba(255,255,255,.75);}
.hero.has-bg .hero-num{color:rgba(255,255,255,.6);}

/* ---------- section shared ---------- */
section.block{padding:110px 6vw;}
.block-inner{max-width:1180px;margin:0 auto;}
.alt{background:var(--bg-alt);}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:64px;flex-wrap:wrap;padding-bottom:30px;border-bottom:1px solid var(--line-strong);}
.section-head .kicker{font-family:'JetBrains Mono',monospace;font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent-warm);margin-bottom:14px;}
.section-head h2{font-family:'Space Grotesk',sans-serif;font-weight:500;font-size:clamp(1.9rem,4.2vw,3.1rem);letter-spacing:-.01em;}
.section-head p{color:var(--ink-dim);max-width:400px;font-size:15px;line-height:1.65;}

/* ---------- servizi ---------- */
.servizi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line-strong);border:1px solid var(--line-strong);}
.serv-card{background:var(--paper);padding:42px 32px;transition:background .3s;}
.serv-card:hover{background:#fff;}
.serv-card .idx{font-family:'JetBrains Mono',monospace;color:var(--accent-warm);font-size:12px;display:block;margin-bottom:26px;}
.serv-card h3{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:1.4rem;margin-bottom:14px;}
.serv-card p{color:var(--ink-dim);font-size:14.5px;line-height:1.7;margin-bottom:20px;}
.serv-card a{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-faint);text-decoration:none;transition:color .2s;}
.serv-card a:hover{color:var(--accent);}

/* ---------- progettazione ---------- */
.proc{display:flex;flex-direction:column;}
.proc-row{
  display:grid;grid-template-columns:120px 1fr;gap:40px;
  padding:44px 0;border-top:1px solid var(--line-strong);align-items:start;
}
.proc-row:last-child{border-bottom:1px solid var(--line-strong);}
.proc-row .pn{font-family:'JetBrains Mono',monospace;font-size:2rem;font-weight:400;color:var(--ink-faint);line-height:1;}
.proc-row h4{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:1.3rem;margin-bottom:12px;}
.proc-row p{color:var(--ink-dim);font-size:15px;line-height:1.75;max-width:640px;}
.proc-row .tags{margin-top:16px;display:flex;gap:8px;flex-wrap:wrap;}
.proc-row .tag{font-family:'JetBrains Mono',monospace;font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);border:1px solid var(--line-strong);padding:5px 11px;}

.credential{
  margin-top:70px;padding-top:50px;border-top:1px solid var(--line-strong);
  display:grid;grid-template-columns:200px 1fr;gap:36px;align-items:start;
}
.credential .cl{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);}
.credential blockquote{font-family:'Space Grotesk',sans-serif;font-style:normal;font-weight:500;font-size:1.35rem;line-height:1.55;color:var(--ink);max-width:680px;padding-left:22px;border-left:2px solid var(--accent);}
.credential .who{margin-top:18px;font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--ink-dim);letter-spacing:.03em;}

/* ---------- rendering ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line-strong);border:1px solid var(--line-strong);margin-bottom:70px;}
.gtile{background:var(--paper);aspect-ratio:4/3;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;transition:background .3s;}
.gtile:hover{background:#fff;}
.gtile svg{width:36px;height:36px;stroke:var(--accent-warm);stroke-width:1.1;opacity:.85;}
.gtile .g-label{font-family:'JetBrains Mono',monospace;font-size:10.5px;color:var(--ink-dim);letter-spacing:.07em;text-transform:uppercase;}

.gtile.has-img{position:relative;padding:0;overflow:hidden;}
.gtile.has-img img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s;}
.gtile.has-img:hover img{transform:scale(1.04);}
.gtile.has-img .g-label{position:absolute;left:0;right:0;bottom:0;padding:14px;color:#fff;text-align:left;background:linear-gradient(0deg, rgba(0,0,0,.6), transparent);}

.compare{display:grid;grid-template-columns:1fr 1fr;gap:60px;}
.compare h4{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-warm);margin-bottom:18px;padding-bottom:14px;border-bottom:1px solid var(--line-strong);}
.compare ul{list-style:none;color:var(--ink-dim);font-size:14.5px;line-height:2.1;}
.compare ul li::before{content:'—  ';color:var(--ink-faint);}

/* ---------- contatti ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;}
.contact-info .item{margin-bottom:32px;}
.contact-info .lbl{font-family:'JetBrains Mono',monospace;font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:8px;}
.contact-info .val{font-size:17px;color:var(--ink);line-height:1.5;}
.contact-info .val a{color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line-strong);transition:color .2s,border-color .2s;}
.contact-info .val a:hover{color:var(--accent);border-color:var(--accent);}
.contact-info .val small{display:block;font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--ink-faint);margin-top:6px;}

.field{margin-bottom:26px;}
.field label{display:block;font-family:'JetBrains Mono',monospace;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:10px;}
.field input,.field select,.field textarea{
  width:100%;background:transparent;border:none;border-bottom:1px solid var(--line-strong);
  color:var(--ink);padding:9px 0;font-family:'Inter',sans-serif;font-size:15px;
  outline:none;transition:border-color .2s;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);}
.field textarea{resize:vertical;min-height:80px;}
.field select{appearance:none;-webkit-appearance:none;cursor:pointer;}
.btn-solid{
  font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:.1em;text-transform:uppercase;
  background:var(--ink);color:var(--paper);border:none;padding:15px 30px;cursor:pointer;
  transition:background .2s;
}
.btn-solid:hover{background:var(--accent-warm);}
.chk-field{
  display:flex;align-items:flex-start;gap:10px;margin-top:16px;cursor:pointer;
  font-size:12.5px;color:var(--ink-faint);line-height:1.6;
}
.chk-field input{margin-top:3px;width:15px;height:15px;flex:none;accent-color:var(--accent);cursor:pointer;}
.chk-field a{color:var(--ink-dim);text-decoration:underline;}
.chk-field a:hover{color:var(--accent);}

.form-msg{font-family:'JetBrains Mono',monospace;font-size:12.5px;letter-spacing:.02em;line-height:1.6;padding:16px 18px;margin-bottom:26px;border:1px solid var(--line-strong);}
.form-msg.success{color:#155724;border-color:#8fd19e;background:#eaf7ee;}
.form-msg.error{color:#7a1f1f;border-color:#e2a0a0;background:#fbeaea;}
.a3ds-hp{position:absolute;left:-9999px;top:-9999px;height:0;width:0;opacity:0;pointer-events:none;}

/* ---------- policy (collapsible) ---------- */
.policy-toggle{max-width:1180px;margin:0 auto;}
.policy-toggle summary{
  cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;
  padding:26px 0;border-top:1px solid var(--line-strong);border-bottom:1px solid var(--line-strong);
  font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-dim);
}
.policy-toggle summary::-webkit-details-marker{display:none;}
.policy-toggle summary .plus{font-size:16px;color:var(--accent-warm);transition:transform .25s;}
.policy-toggle[open] summary .plus{transform:rotate(45deg);}
.policy-body{max-width:760px;padding:40px 0 10px;}
.policy-body h3{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:1.05rem;margin:32px 0 12px;color:var(--ink);}
.policy-body h3:first-of-type{margin-top:0;}
.policy-body p{color:var(--ink-dim);font-size:14.5px;line-height:1.8;margin-bottom:14px;}
.policy-body ul{color:var(--ink-dim);font-size:14.5px;line-height:1.9;margin:0 0 14px 20px;}
.policy-body strong{color:var(--ink);font-weight:600;}
.policy-note{border:1px solid var(--line-strong);padding:18px 22px;font-family:'JetBrains Mono',monospace;font-size:11.5px;color:var(--ink-dim);line-height:1.7;margin-bottom:34px;}

/* ---------- galleria (masonry, a tutta larghezza) ---------- */
/* .photo-grid is a direct child of section.block, deliberately outside
   .block-inner: the negative margins cancel the section's own 6vw padding
   so the masonry spans the full viewport width edge-to-edge. */
.photo-grid{
  columns:4 260px;column-gap:14px;
  margin:0 -6vw;
}
.photo-item{
  display:block;width:100%;padding:0;margin-bottom:14px;
  border:1px solid var(--line-strong);background:var(--paper);
  cursor:pointer;overflow:hidden;break-inside:avoid;-webkit-column-break-inside:avoid;
}
.photo-item img{width:100%;height:auto;display:block;transition:transform .5s;}
.photo-item:hover img{transform:scale(1.06);}
.photo-empty{font-family:'JetBrains Mono',monospace;font-size:12.5px;color:var(--ink-faint);border:1px dashed var(--line-strong);padding:24px;text-align:center;}

.lightbox{
  position:fixed;inset:0;z-index:1000;display:none;align-items:center;justify-content:center;
  background:rgba(10,10,10,.92);padding:5vw;
}
.lightbox.open{display:flex;}
.lightbox img{max-width:100%;max-height:100%;box-shadow:0 20px 60px rgba(0,0,0,.5);}
.lightbox-close{
  position:absolute;top:22px;right:28px;background:none;border:none;color:#fff;
  font-size:34px;line-height:1;cursor:pointer;opacity:.8;
}
.lightbox-close:hover{opacity:1;}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line-strong);background:var(--paper);}
.footer-inner{max-width:1180px;margin:0 auto;padding:40px 6vw;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;}
.footer-inner .fleft{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.footer-inner img{height:18px;opacity:.85;}
.footer-inner .fmono{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--ink-faint);letter-spacing:.04em;}

/* ---------- basic fallback page content (index.php / page.php) ---------- */
.a3ds-basic{max-width:800px;margin:0 auto;padding:150px 6vw 100px;}
.a3ds-basic h1{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:2rem;margin-bottom:20px;}
.a3ds-basic .entry-content{color:var(--ink-dim);font-size:15.5px;line-height:1.8;}

@media (max-width:860px){
  header{padding:16px 6vw;}
  nav{position:fixed;top:62px;left:0;right:0;background:var(--bg);flex-direction:column;align-items:flex-start;border-bottom:1px solid var(--line);display:none;padding:14px 6vw 24px;gap:16px;}
  nav.open{display:flex;}
  .nav-toggle{display:flex;}
  section.block{padding:80px 6vw;}
  .servizi-grid,.gallery{grid-template-columns:1fr;}
  .compare,.contact-grid{grid-template-columns:1fr;gap:44px;}
  .proc-row{grid-template-columns:56px 1fr;gap:20px;}
  .proc-row .pn{font-size:1.6rem;}
  .credential{grid-template-columns:1fr;gap:16px;}
  .hero-num{display:none;}
  .hero.has-bg{min-height:70vh;}
  .photo-grid{columns:2 140px;margin:0 -6vw;}
}