/* =========================================================
   POLITECNOS — foglio di stile
   Palette "blueprint tecnico": giallo di brand + antracite
   Font: Space Grotesk (titoli) + IBM Plex Sans (testo)
   ========================================================= */

:root {
  --yellow: #d7db27;
  --yellow-dim: #b7ba1f;
  --ink: #15171a;
  --ink-soft: #2b2e33;
  --steel: #4c5560;
  --steel-light: #7c8590;
  --paper: #f6f5f0;
  --paper-dim: #ece9df;
  --line: #d8d5c8;
  --white: #ffffff;

  --font-head: "Space Grotesk", "Arial Narrow", Arial, sans-serif;
  --font-body: "IBM Plex Sans", Arial, Helvetica, sans-serif;

  --max: 1160px;
}

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 .5em;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.1rem, 4.4vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1.1em; max-width: 62ch; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 28px;
}

.eyebrow {
  font-family: var(--font-head);
  font-size: .8rem;
  color: var(--steel);
  margin: 0 0 .6em;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: .5em;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: .95rem;
  padding: .85em 1.5em;
  border-radius: 2px;
  text-decoration: none;
  border: 1.5px solid var(--ink);
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}

.btn-primary {
  background: var(--yellow);
  color: var(--ink);
  border-color: var(--yellow);
}
.btn-primary:hover { background: var(--ink); color: var(--yellow); border-color: var(--ink); }

.btn-ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.55);
}
.btn-ghost:hover { background: var(--white); color: var(--ink); border-color: var(--white); }

.btn-outline {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn-outline:hover { background: var(--ink); color: var(--yellow); }

/* ---------- Header ---------- */

header.site {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: .6em;
  text-decoration: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--ink);
}

.brand .dot {
  width: 14px;
  height: 14px;
  background: var(--yellow);
  border-radius: 50%;
  flex: none;
}

.brand small {
  display: block;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: .58rem;
  letter-spacing: .12em;
  color: var(--steel);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

nav.links {
  display: flex;
  align-items: center;
  gap: 6px;
}

nav.links a {
  text-decoration: none;
  font-family: var(--font-head);
  font-size: .92rem;
  color: var(--ink-soft);
  padding: 8px 14px;
  border-radius: 2px;
}

nav.links a:hover { color: var(--ink); background: var(--paper-dim); }

nav.links a.active {
  color: var(--ink);
  box-shadow: inset 0 -3px 0 var(--yellow);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  font-family: var(--font-head);
  font-size: .82rem;
  font-weight: 600;
  color: var(--ink);
  background: var(--yellow);
  border: 1.5px solid var(--yellow);
  padding: .58em 1.1em;
  border-radius: 2px;
  text-decoration: none;
  transition: background .15s ease, color .15s ease;
}
.nav-cta:hover { background: var(--ink); color: var(--yellow); border-color: var(--ink); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--ink);
  width: 42px;
  height: 38px;
  border-radius: 2px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.nav-toggle span { width: 20px; height: 2px; background: var(--ink); display: block; }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  color: var(--white);
  min-height: 78vh;
  display: flex;
  align-items: flex-end;
  background-image: linear-gradient(180deg, rgba(21,23,26,.35), rgba(21,23,26,.92)), url("../images/hero-sede.jpg");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

.hero .wrap { padding-top: 90px; padding-bottom: 64px; }

.hero .eyebrow { color: var(--yellow); }

.hero h1 { max-width: 15ch; }

.hero .lead {
  max-width: 52ch;
  font-size: 1.1rem;
  color: rgba(255,255,255,.86);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 1.6em;
}

.factstrip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.factstrip .wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.factstrip dl {
  margin: 0;
  padding: 22px 20px;
  border-left: 1px solid var(--line);
  text-align: center;
}
.factstrip dl:first-child { border-left: none; }

.factstrip dt {
  font-family: var(--font-head);
  font-size: 1.6rem;
  color: var(--ink);
}
.factstrip dd {
  margin: 4px 0 0;
  font-size: .78rem;
  color: var(--steel);
  letter-spacing: .03em;
}

/* ---------- Sections generiche ---------- */

section { padding: 76px 0; }
section.tight { padding: 48px 0; }
section.on-dark { background: var(--ink); color: var(--white); }
section.on-paper-dim { background: var(--paper-dim); }

.section-head {
  max-width: 62ch;
  margin-bottom: 2.4em;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.section-head.center .eyebrow,
.section-head.center h2,
.section-head.center p {
  max-width: 62ch;
}

/* ---------- Pillars / cards ---------- */

.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.pillar {
  background: var(--white);
  padding: 34px 30px;
  text-decoration: none;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background .15s ease;
}
.pillar:hover { background: var(--paper); }

.pillar .icon {
  width: 46px;
  height: 46px;
  margin-bottom: 6px;
}

.pillar h3 { margin-bottom: 2px; }
.pillar p { font-size: .93rem; color: var(--steel); margin-bottom: 0; }
.pillar .go {
  margin-top: auto;
  padding-top: 14px;
  font-family: var(--font-head);
  font-size: .82rem;
  color: var(--ink);
}

/* ---------- Quote callout ---------- */

.quote-callout {
  border-left: 4px solid var(--yellow);
  background: var(--paper-dim);
  padding: 18px 24px;
  margin: 1.6em 0;
}
.quote-callout p {
  margin: 0;
  font-style: italic;
  color: var(--ink-soft);
  max-width: none;
}
section.on-dark .quote-callout,
.cta-strip .quote-callout {
  background: rgba(255,255,255,.06);
}
section.on-dark .quote-callout p { color: rgba(255,255,255,.85); }

/* ---------- Checklist punti di forza ---------- */

.check-grid {
  list-style: none;
  margin: 1.8em 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 22px;
}
.check-grid li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-size: .88rem;
  color: var(--ink);
}
.check-grid svg { flex: none; width: 20px; height: 20px; }

/* ---------- Badge fluttuante su immagine ---------- */

.media-badged { position: relative; }
.image-badge {
  position: absolute;
  left: -20px;
  bottom: -20px;
  background: var(--ink);
  color: var(--white);
  padding: 18px 22px;
  max-width: 240px;
  border-left: 4px solid var(--yellow);
}
.image-badge strong {
  display: block;
  font-family: var(--font-head);
  font-size: 1.15rem;
  color: var(--yellow);
}
.image-badge span {
  display: block;
  font-size: .72rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: rgba(255,255,255,.7);
  margin-top: 4px;
}

/* ---------- Ambiti di attività: card con icona ---------- */

.ambiti-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.ambiti-card {
  background: var(--white);
  padding: 26px 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.ambiti-card .tag-icon {
  width: 30px;
  height: 30px;
  margin-bottom: 12px;
  display: block;
}
.ambiti-card h4 {
  font-family: var(--font-head);
  font-size: 1rem;
  margin: 0 0 4px;
}
.ambiti-card p {
  font-size: .85rem;
  color: var(--steel);
  margin: 0;
}

.ambiti-card-cta {
  display: block;
  text-decoration: none;
  background: var(--yellow) !important;
  transition: background .15s ease;
}
.ambiti-card-cta:hover { background: var(--yellow-dim) !important; }
.ambiti-card-cta h4, .ambiti-card-cta p { color: var(--ink); }
.ambiti-card-cta p { opacity: .82; }

/* ---------- Servizi (pagina interna) ---------- */

.service-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  padding: 60px 0;
  border-top: 1px solid var(--line);
}
.service-block:first-of-type { border-top: none; }
.service-block.reverse .media { order: 2; }
.service-block .media img {
  border: 1px solid var(--line);
}
.service-block ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}
.service-block ul li {
  padding-left: 20px;
  position: relative;
  font-size: .96rem;
  color: var(--ink-soft);
}
.service-block ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 8px;
  height: 8px;
  background: var(--yellow);
}

/* ---------- Org chart ---------- */

.orgchart {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}
.org-node {
  font-family: var(--font-head);
  font-size: .92rem;
  text-align: center;
  padding: 14px 22px;
  border: 1.5px solid var(--ink);
  background: var(--white);
  border-radius: 2px;
}
.org-node small {
  display: block;
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--steel);
  margin-top: 3px;
  font-size: .75rem;
}
.org-node.top { background: var(--ink); color: var(--white); }
.org-node.top small { color: rgba(255,255,255,.65); }
.org-node.mid { background: var(--yellow); }

.org-connector { width: 1.5px; height: 26px; background: var(--ink); }

.org-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  width: 100%;
  margin-top: 26px;
  position: relative;
}
/* la barra orizzontale è costruita come somma di segmenti, uno per ogni
   nodo verso il successivo: ogni segmento parte dal centro del nodo
   (sempre esatto) e si estende per la sua intera larghezza + il gap,
   raggiungendo con precisione il centro del nodo successivo, a qualunque
   larghezza dello schermo */
.org-row .org-node:not(:last-child)::after {
  content: "";
  position: absolute;
  top: -26px;
  left: 50%;
  /* +14px di gap, +3px per compensare il bordo (1.5px per lato) del nodo:
     il contenitore di riferimento per "100%" è il suo padding-box, più
     stretto del bordo esterno */
  width: calc(100% + 17px);
  height: 1.5px;
  background: var(--ink);
}
.org-row .org-node {
  font-size: .82rem;
  padding: 12px 10px;
  position: relative;
}
.org-row .org-node::before {
  content: "";
  position: absolute;
  top: -26px;
  left: 50%;
  width: 1.5px;
  height: 26px;
  background: var(--ink);
}

/* seconda fila: continuazione della stessa fila superiore, non un nuovo ramo */
.org-row.cont {
  margin-top: 14px;
}
.org-row.cont::before,
.org-row.cont .org-node::before,
.org-row.cont .org-node::after {
  content: none;
}

/* ---------- Contatti ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 22px;
}
.contact-list li {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.contact-list .label {
  font-family: var(--font-head);
  font-size: .78rem;
  color: var(--steel);
  letter-spacing: .03em;
  margin-bottom: 4px;
}
.contact-list .value { font-size: 1.05rem; }
.contact-list a { text-decoration: none; }
.contact-list a:hover { color: var(--yellow-dim); }

.map-block img { border: 1px solid var(--line); }
.map-caption {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .85rem;
  color: var(--steel);
  margin-top: 10px;
}

/* ---------- Form di contatto ---------- */

.contact-form {
  background: var(--ink);
  color: var(--white);
  padding: 34px 32px;
  border-left: 4px solid var(--yellow);
}
.contact-form h3 { color: var(--white); margin-bottom: .3em; }
.contact-form .hint { font-size: .85rem; color: rgba(255,255,255,.6); margin-bottom: 1.4em; }
.contact-form .field { margin-bottom: 16px; }
.contact-form label {
  display: block;
  font-family: var(--font-head);
  font-size: .74rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: rgba(255,255,255,.6);
  margin-bottom: 6px;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 11px 13px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.22);
  color: var(--white);
  font-family: var(--font-body);
  font-size: .95rem;
  border-radius: 2px;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: rgba(255,255,255,.35); }
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--yellow);
}
.contact-form textarea { resize: vertical; min-height: 110px; }
.contact-form button {
  width: 100%;
  cursor: pointer;
  margin-top: 4px;
  font-family: var(--font-head);
}
.form-note {
  font-size: .78rem;
  color: rgba(255,255,255,.5);
  margin-top: 12px;
}

/* ---------- CTA strip ---------- */

.cta-strip {
  background: var(--ink);
  color: var(--white);
}
.cta-strip .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  padding: 46px 28px;
}
.cta-strip h2 { margin: 0; }
.cta-strip p { color: rgba(255,255,255,.7); margin: 6px 0 0; }

/* ---------- Footer ---------- */

footer.site {
  background: var(--ink);
  color: rgba(255,255,255,.72);
  border-top: 6px solid var(--yellow);
}
footer.site .wrap {
  padding: 52px 28px 30px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 36px;
}
footer.site h4 {
  font-family: var(--font-head);
  color: var(--white);
  font-size: .85rem;
  letter-spacing: .04em;
  margin-bottom: 14px;
}
footer.site .brand { color: var(--white); margin-bottom: 12px; }
footer.site .brand small { color: rgba(255,255,255,.5); }
footer.site p { font-size: .88rem; color: rgba(255,255,255,.62); }
footer.site ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
footer.site a { text-decoration: none; font-size: .9rem; }
footer.site a:hover { color: var(--yellow); }
.bottom-bar {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 16px 28px;
  font-size: .78rem;
  color: rgba(255,255,255,.45);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- Page intro (pagine interne) ---------- */

.page-intro {
  padding: 64px 0 20px;
  border-bottom: 1px solid var(--line);
}
.page-intro .eyebrow { color: var(--yellow-dim); }

/* ---------- Responsive ---------- */

@media (max-width: 880px) {
  nav.links { display: none; }
  nav.links.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 10px 28px 18px;
    gap: 2px;
  }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .factstrip .wrap, .ambiti-grid { grid-template-columns: 1fr 1fr; }
  .pillars { grid-template-columns: 1fr; }
  .pillar { padding: 26px 24px; }
  .service-block, .service-block.reverse { grid-template-columns: 1fr; }
  .service-block.reverse .media { order: 0; }
  .contact-grid { grid-template-columns: 1fr; }
  footer.site .wrap { grid-template-columns: 1fr; }
  .org-row { grid-template-columns: repeat(2, 1fr); }
  .image-badge { left: 0; right: 0; bottom: -16px; max-width: none; }
}

@media (max-width: 560px) {
  .factstrip .wrap { grid-template-columns: 1fr 1fr; }
  .factstrip dl:nth-child(3) { border-left: none; }
  .ambiti-grid { grid-template-columns: 1fr; }
  .org-row { grid-template-columns: 1fr; }
  .org-row .org-node::before, .org-row .org-node::after { display: none; }
  .check-grid { grid-template-columns: 1fr; }
}

/* Smartphone: la foto della sede si inquadra sull'insegna "politecnos"
   (in alto a sinistra nello scatto originale) invece che sul centro */
@media (max-width: 600px) {
  .hero {
    min-height: 64vh;
    background-position: left 4% top 32%;
  }
  .hero .wrap { padding-top: 76px; padding-bottom: 40px; }
  .hero .lead { font-size: 1rem; }
  .hero-actions { gap: 10px; }
  .hero-actions .btn { flex: 1 1 auto; justify-content: center; padding: .8em 1em; font-size: .88rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}