:root{
  --bg:#ffffff;
  --ink:#0f172a;
  --muted:#475569;
  --line:#e5e7eb;
  --soft:#f6f7f9;
  --shadow: 0 18px 40px rgba(2, 6, 23, .10);
  --radius: 18px;
  --container: 1120px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  color: var(--ink);
  background: var(--bg);
  line-height:1.55;
}
a{ color: inherit; }

.container{
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

.skip-link{
  position:absolute;
  left:-999px; top:auto;
  width:1px; height:1px; overflow:hidden;
}
.skip-link:focus{
  left:16px; top:16px;
  width:auto; height:auto;
  padding:10px 12px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  z-index:9999;
}

.kicker{
  text-transform: uppercase;
  letter-spacing: .16em;
  font-size: 12px;
  color: var(--muted);
  margin: 0 0 10px;
}
.kicker-on-hero{ color: rgba(255,255,255,.78); }

.lead{
  font-size: 18px;
  color: var(--muted);
  margin: 0;
}
.muted{ color: var(--muted); }

.section{ padding: 70px 0; }
.section-muted{
  background: var(--soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.grid-2{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 28px;
  align-items:start;
}
@media (max-width: 920px){
  .grid-2{ grid-template-columns:1fr; }
}

/* Header */
.site-header{
  position: sticky;
  top:0;
  z-index:1000;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 14px 0;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  text-decoration:none;
}
.brand-mark{
  width:34px; height:34px;
  border-radius: 10px;
  background: linear-gradient(135deg, #111827, #6b7280);
}
.brand-text strong{ display:block; font-size:14px; letter-spacing:.2px; }
.brand-text small{ display:block; font-size:12px; color: var(--muted); margin-top:2px; }

.nav{ position:relative; }
.nav-toggle{
  display:none;
  width:44px; height:44px;
  border:1px solid var(--line);
  border-radius: 12px;
  background:#fff;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:18px; height:2px;
  background: var(--ink);
  margin:4px auto;
}
.nav-list{
  list-style:none;
  display:flex;
  gap:18px;
  margin:0;
  padding:0;
  align-items:center;
}
.nav-list a{
  text-decoration:none;
  color: var(--muted);
  font-size: 14px;
  padding: 8px 10px;
  border-radius: 10px;
}
.nav-list a:hover{ background: #f1f5f9; color: var(--ink); }
.nav-list a.is-active{ background: var(--ink); color:#fff; }

@media (max-width: 840px){
  .nav-toggle{ display:block; }
  .nav-list{
    position:absolute;
    right:0;
    top:54px;
    flex-direction:column;
    align-items:stretch;
    background:#fff;
    border:1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow);
    padding: 10px;
    min-width: 220px;
    display:none;
  }
  .nav-list.is-open{ display:flex; }
}

/* HERO - background definito + overlay separato */
.hero{
  position:relative;
  min-height: calc(100vh - 62px);
  display:grid;
  align-items:center;
  border-bottom: 1px solid var(--line);

  background-color: #0f172a;                 /* ✅ Fallback */
  background-image: url("../images/homepage.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-overlay{
  position:absolute;
  inset:0;
  background: rgba(15,23,42,.35);
  z-index: 0;                                /* ✅ */
}

.hero-inner{
  position:relative;
  padding: 96px 0 86px;
  color:#fff;
  max-width: 860px;
  z-index: 1;                                /* ✅ */
}
.hero-title{
  font-size: clamp(34px, 4.4vw, 56px);
  line-height:1.05;
  margin: 0 0 14px;
  letter-spacing: -.02em;
}
.hero-subtitle{
  font-size: 18px;
  margin: 0;
  color: rgba(255,255,255,.90);
  max-width: 62ch;
}
.actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top: 22px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 12px 16px;
  border-radius: 14px;
  border:1px solid rgba(255,255,255,.35);
  text-decoration:none;
  font-weight: 650;
  font-size: 14px;
}
.btn-primary{
  background: #fff;
  color: #111827;
  border-color: rgba(255,255,255,.45);
}
.btn-ghost{
  background: transparent;
  color:#fff;
}

/* Media */
.media{
  width:100%;
  height:auto;
  display:block;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

/* Head section */
.section-head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap: 16px;
  margin-bottom: 18px;
}
@media (max-width: 700px){
  .section-head{ flex-direction:column; align-items:flex-start; }
}
.link{
  color: var(--muted);
  text-decoration:none;
  font-weight: 600;
}
.link:hover{ text-decoration:underline; color: var(--ink); }

/* Projects grid: 2 colonne desktop, 1 colonna mobile */
.projects-grid{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}
@media (max-width: 860px){
  .projects-grid{ grid-template-columns: 1fr; }
}

/* Project card (semplice, modulare) */
.project-card{
  border-radius: var(--radius);
  overflow: hidden;
  background:#fff;
  border:1px solid var(--line);
  box-shadow: var(--shadow);
}
.project-link{
  display:block;
  text-decoration:none;
}
.project-img{
  width:100%;
  height: 260px;
  object-fit: cover;
  display:block;
}
.project-body{
  padding: 16px;
}
.project-body h3{
  margin: 0 0 6px;
  font-size: 18px;
  letter-spacing: -.01em;
}
.project-body p{ margin:0; }

/* Progetti: tabs + UNA sezione alla volta */
.page-hero{
  padding: 56px 0 26px;
  border-bottom: 1px solid var(--line);
}
.page-hero h1{
  margin: 0 0 10px;
  font-size: 44px;
  letter-spacing: -.02em;
}

.tabs{
  display:flex;
  flex-wrap:wrap;
  gap: 10px;
  margin-bottom: 18px;
}
.tab{
  cursor:pointer;
  border: 1px solid var(--line);
  background:#fff;
  padding: 10px 12px;
  border-radius: 999px;
  font-weight: 650;
  font-size: 13px;
  color: var(--muted);
}
.tab.is-active{
  background: var(--ink);
  color:#fff;
  border-color: var(--ink);
}

/* fondamentale: nascondi tutte, mostra solo selezionata */
.cat-section{
  display:none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:#fff;
  padding: 18px;
  margin-top: 14px;
  box-shadow: var(--shadow);
}
.cat-section.is-open{ display:block; }

.cat-head{
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.cat-head h2{ margin: 0 0 6px; font-size: 22px; }

/* Contact/Footer */
.contact{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 18px;
  align-items:start;
}
@media (max-width: 920px){
  .contact{ grid-template-columns:1fr; }
}
.contact-card{
  border:1px solid var(--line);
  border-radius: var(--radius);
  background:#fff;
  box-shadow: var(--shadow);
  overflow:hidden;

  align-self: end;   /*🔥allineo in basso a dx*/
}
.contact-row{
  display:flex;
  justify-content:space-between;
  gap: 16px;
  padding: 14px 16px;
  text-decoration:none;
  border-bottom: 1px solid var(--line);
}
.contact-row:last-child{ border-bottom:none; }
.label{ color: var(--muted); font-size: 13px; }
.value{ font-weight: 700; font-size: 13px; }

.site-footer{
  border-top: 1px solid var(--line);
  padding: 22px 0;
  background:#fff;
}
.footer-inner{
  display:flex;
  justify-content:space-between;
  gap: 12px;
  flex-wrap:wrap;
}
.footer-inner p{ margin:0; }