:root {
  --primario: #0f766e;
  --primario-scuro: #115e59;
  --testo: #1f2933;
  --testo-grigio: #6b7280;
  --sfondo: #ffffff;
  --sfondo-alt: #f4f7f6;
  --nav-sfondo: #ffffff;
  --bordo: #e5e9e8;
  --card-sfondo: #ffffff;
}

:root[data-theme="dark"] {
  --primario: #2dd4bf;
  --primario-scuro: #5eead4;
  --testo: #d5dbdb;
  --testo-grigio: #94a3a0;
  --sfondo: #171c1b;
  --sfondo-alt: #11201d;
  --nav-sfondo: #1d2423;
  --bordo: #2e3937;
  --card-sfondo: #1d2423;
}
@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] {
    --primario: #2dd4bf;
    --primario-scuro: #5eead4;
    --testo: #d5dbdb;
    --testo-grigio: #94a3a0;
    --sfondo: #171c1b;
    --sfondo-alt: #11201d;
    --nav-sfondo: #1d2423;
    --bordo: #2e3937;
    --card-sfondo: #1d2423;
  }
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--testo);
  background: var(--sfondo);
  line-height: 1.65;
  font-size: 1.03rem;
  transition: background .2s, color .2s;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }

/* Navbar */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: var(--nav-sfondo);
  box-shadow: 0 .125rem .25rem rgba(0,0,0,.09);
}
.site-header nav { display: flex; align-items: center; height: 4.2rem; gap: 1.2rem; }
.brand { color: var(--testo); text-decoration: none; font-size: 1.2rem; font-weight: 700; }
.brand span { color: var(--primario); font-weight: 400; }
.nav-links { flex: 1; text-align: right; }
.nav-links a {
  color: var(--testo-grigio); text-decoration: none; margin-left: 1.4rem;
  font-size: .97rem; font-weight: 500;
}
.nav-links a.active, .nav-links a:hover { color: var(--primario); }

#theme-toggle, #nav-burger {
  background: none; border: none; cursor: pointer;
  color: var(--testo-grigio); padding: .4rem; line-height: 0;
}
#nav-burger { display: none; }
#nav-burger svg { width: 1.35rem; height: 1.35rem; }
#nav-burger span { display: none; }
#nav-burger[aria-expanded="false"] .ni-bars { display: inline; }
#nav-burger[aria-expanded="true"] .ni-close { display: inline; }
#nav-burger:hover { color: var(--primario); }
#theme-toggle:hover { color: var(--primario); }
#theme-toggle svg { width: 1.2rem; height: 1.2rem; }
#theme-toggle span { display: none; }
:root[data-theme="auto"] #theme-toggle .ti-auto { display: inline; }
:root[data-theme="light"] #theme-toggle .ti-sun { display: inline; }
:root[data-theme="dark"] #theme-toggle .ti-moon { display: inline; }

/* Hero */
.hero { background: var(--sfondo-alt); border-bottom: 1px solid var(--bordo); }
.hero-inner {
  display: grid; grid-template-columns: 3fr 1fr; gap: 2.5rem;
  align-items: center;
  padding-top: 3.5rem; padding-bottom: 3.5rem;
}
.eyebrow {
  color: var(--primario); font-weight: 600;
  font-size: .9rem; text-transform: uppercase; letter-spacing: .05em;
  margin-bottom: .6rem;
}
.hero h1 { font-size: 2.2rem; line-height: 1.2; margin-bottom: 1rem; }
.hero-desc { max-width: 38rem; margin-bottom: 1rem; }
.hero-contatto { color: var(--testo-grigio); }
.hero-contatto a { color: var(--primario); text-decoration: none; }
.hero-contatto a:hover { text-decoration: underline; }
.contatto-pagina {
  margin-top: 2.2rem; padding-top: 1.2rem;
  border-top: 1px solid var(--bordo);
  color: var(--testo-grigio);
}
.contatto-pagina a { color: var(--primario); text-decoration: none; }
.hero-foto { text-align: center; }
.hero-foto img {
  width: 250px; height: 250px; max-width: 100%;
  border-radius: 50%; object-fit: cover;
  box-shadow: 0 4px 20px rgba(0,0,0,.15);
}

/* Servizi */
.servizi { padding-top: 3rem; padding-bottom: 2rem; }
.gruppo { margin-bottom: 2.6rem; }
.gruppo h2 {
  font-size: 1.35rem; margin-bottom: 1.1rem;
  color: var(--testo);
  border-left: 4px solid var(--primario); padding-left: .7rem;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.3rem;
}
.card {
  display: flex; flex-direction: column; gap: .5rem;
  background: var(--card-sfondo);
  border: 1px solid var(--bordo); border-radius: 8px;
  padding: 1.2rem 1.4rem;
  text-decoration: none; color: var(--testo);
  transition: border-color .15s;
}
.card:hover { border-color: var(--primario); }
.card h3 { font-size: 1.06rem; line-height: 1.35; }
.card:hover h3 { color: var(--primario); }
.card p { font-size: .93rem; color: var(--testo-grigio); flex: 1; }

/* Contatti */
.contatti { background: var(--sfondo-alt); border-top: 1px solid var(--bordo); padding: 2.6rem 0 3rem; }
.contatti h2 { font-size: 1.5rem; margin-bottom: 1.1rem; }
.contatti-lista { list-style: none; }
.contatti-lista li { display: flex; align-items: center; gap: .9rem; margin-bottom: .8rem; }
.contatti-lista a { color: var(--testo); text-decoration: none; }
.contatti-lista a:hover { color: var(--primario); text-decoration: underline; }
.c-icon { line-height: 0; }
.c-icon svg { width: 1.25rem; height: 1.25rem; color: var(--primario); }

/* Pagine interne */
.pagina { max-width: 760px; padding-top: 2.8rem; padding-bottom: 3.5rem; }
.pagina h1 { font-size: 1.9rem; line-height: 1.25; margin-bottom: 1.3rem; }
.contenuto h2 { font-size: 1.35rem; margin: 1.8rem 0 .7rem; }
.contenuto h3 { font-size: 1.1rem; margin: 1.4rem 0 .5rem; }
.contenuto p { margin-bottom: .9rem; }
.contenuto ul, .contenuto ol { padding-left: 1.5rem; margin-bottom: .9rem; }
.contenuto li { margin-bottom: .3rem; }
.contenuto a { color: var(--primario); }
.contenuto strong { color: var(--testo); }
.contenuto hr { border: 0; border-top: 1px solid var(--bordo); margin: 1.5rem 0; }

.cta-box {
  margin-top: 2.5rem;
  background: var(--sfondo-alt); border: 1px solid var(--bordo); border-radius: 10px;
  padding: 1.4rem 1.6rem;
}
.cta-box p { margin-bottom: 1rem; }

/* Collaborazioni — testo a sinistra, foto tonda a destra */
.collab-lista { display: flex; flex-direction: column; gap: 2.2rem; }
.collab {
  display: grid; grid-template-columns: 1fr 200px; gap: 2rem;
  align-items: center;
  border-bottom: 1px solid var(--bordo); padding-bottom: 2rem;
}
.collab:last-child { border-bottom: none; padding-bottom: 0; }
.collab h2 { font-size: 1.3rem; margin-bottom: .15rem; }
.collab-foro { color: var(--primario); font-size: .93rem; font-weight: 600; margin-bottom: .7rem; }
.collab-sito a { color: var(--primario); text-decoration: none; font-size: .95rem; }
.collab-sito a:hover { text-decoration: underline; }
.collab-foto { text-align: center; }
.collab-foto img {
  width: 180px; height: 180px; border-radius: 50%;
  object-fit: cover; box-shadow: 0 2px 10px rgba(0,0,0,.12);
}
.collab-iniziali {
  width: 180px; height: 180px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--sfondo-alt); border: 2px solid var(--bordo);
  color: var(--primario); font-size: 3rem; font-weight: 600; letter-spacing: .04em;
}
@media (max-width: 700px) {
  .collab { grid-template-columns: 1fr; }
  .collab-foto { order: -1; }
  .collab-foto img, .collab-iniziali { width: 140px; height: 140px; font-size: 2.3rem; }
}

/* Footer */
.site-footer {
  background: var(--nav-sfondo); border-top: 1px solid var(--bordo);
  padding: 1.4rem 0; font-size: .9rem; color: var(--testo-grigio);
}
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: .8rem; }
.site-footer a { color: var(--primario); text-decoration: none; }
.footer-social a { margin-left: 1rem; color: var(--testo-grigio); }
.footer-social a:hover { color: var(--primario); }
.footer-social svg { width: 1.25rem; height: 1.25rem; }

@media (max-width: 840px) {
  /* menu hamburger */
  #nav-burger { display: block; }
  .nav-links {
    display: none;
    position: absolute; top: 4.2rem; left: 0; right: 0;
    background: var(--nav-sfondo);
    border-bottom: 1px solid var(--bordo);
    box-shadow: 0 .5rem .75rem rgba(0,0,0,.08);
    padding: .4rem 1.5rem .8rem;
    text-align: left;
  }
  .nav-links.open { display: block; }
  .nav-links a {
    display: block; margin: 0; padding: .7rem 0;
    border-bottom: 1px solid var(--bordo);
    font-size: 1rem;
  }
  .nav-links a:last-child { border-bottom: none; }

  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-foto { order: -1; }
  .hero-foto img { width: 180px; height: 180px; }
  .footer-inner { justify-content: center; text-align: center; }
}