/* ==========================================================================
   FluxHub — header condiviso (identità 2026).
   Unica fonte di verità per barra, navigazione e CTA: la home, la guida BPM,
   la 404 e tutte le pagine secondarie caricano questo file.
   I token sono ridefiniti sull'header perché il file resti autosufficiente.
   Il corpo delle pagine secondarie sta in assets/css/pages-flux.css.
   Markup atteso: header.header[.is-light] > .header-content.header-island
   con .logo, nav.main-nav > .nav-menu#nav-menu > ul.nav-links, .nav-cta,
   .nav-toggle. Il comportamento (scroll, is-light, menu mobile) sta in
   assets/js/main.js.
   ========================================================================== */

body.flux-2026 .header {
  --fh-blue: #0068F8;
  --fh-cyan: #38C8F8;
  --fh-ink: #0B0F14;
  --fh-slate: #5B6773;
  --fh-navy: #0B1B33;
  --cobalt: var(--fh-blue);
  --cobalt-bright: #1a78ff;
  --line-dark: #e2e8f0;
  --line-light: #e2e8f0;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --radius-sm: 6px;
  font-family: 'DM Sans', system-ui, -apple-system, 'Segoe UI', Arial, sans-serif;
}

/* ---------- HEADER: barra piena, niente pillola ---------- */
body.flux-2026 .header {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 0;
  background: #070d18;
  border-bottom: 1px solid transparent;
  pointer-events: auto;
}
body.flux-2026 .header.is-light {
  background: #fff;
  border-bottom-color: var(--line-light);
}
body.flux-2026 .header-island {
  position: relative;
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 18px 32px;
  border-radius: 0;
  background: transparent;
  border: none;
  box-shadow: none;
}
body.flux-2026 .logo .logo-on-light { display: none !important; }
body.flux-2026 .header.is-light .logo .logo-on-dark { display: none !important; }
body.flux-2026 .header.is-light .logo .logo-on-light { display: block !important; }
body.flux-2026 .header.is-hidden { transform: none; }
body.flux-2026 .logo { display: flex; align-items: center; flex: 0 0 auto; }
body.flux-2026 .logo img { height: 36px; width: auto; max-width: none; object-fit: contain; flex: 0 0 auto; }
body.flux-2026 .main-nav { display: flex; align-items: center; gap: 10px; }
body.flux-2026 .nav-menu { display: flex; align-items: center; background: transparent; box-shadow: none; border: none; }
body.flux-2026 .nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
  background: transparent;
}
body.flux-2026 .nav-link {
  font-size: 14px;
  font-weight: 500;
  color: #c5d0dc;
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 0;
  background: transparent;
  position: relative;
  isolation: isolate;
  transition: color .25s var(--ease);
}
body.flux-2026 .nav-link::before {
  content: "";
  position: absolute;
  z-index: -1;
  left: 4px;
  right: 4px;
  top: 22%;
  bottom: 18%;
  background: var(--fh-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .45s cubic-bezier(.22, 1, .36, 1);
}
@keyframes nav-mark {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}
body.flux-2026 .nav-link:hover,
body.flux-2026 .nav-link.is-current {
  color: var(--fh-navy);
  background: transparent;
}
body.flux-2026 .nav-link:hover::before { transform: scaleX(1); }
body.flux-2026 .nav-link.is-current::before {
  transform: scaleX(1);
  animation: nav-mark .5s cubic-bezier(.22, 1, .36, 1) .15s both;
}
body.flux-2026 .header.is-light .nav-link { color: var(--fh-slate); background: transparent; }
body.flux-2026 .header.is-light .nav-link:hover,
body.flux-2026 .header.is-light .nav-link.is-current {
  color: var(--fh-navy);
  background: transparent;
  box-shadow: none;
}
body.flux-2026 .nav-cta {
  white-space: nowrap;
  border-radius: 6px;
  padding: 10px 18px;
}
body.flux-2026 .header.is-light .nav-toggle { border-color: var(--line-light); }
body.flux-2026 .header.is-light .nav-toggle span:not(.sr-only) { background: var(--fh-ink); }
body.flux-2026 .nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid #1e334f;
  border-radius: 10px;
  cursor: pointer;
}
body.flux-2026 .nav-toggle span:not(.sr-only) {
  display: block;
  width: 20px;
  height: 1.5px;
  background: #e8eef6;
  border-radius: 2px;
  transition: .3s;
}

@media (max-width: 860px) {
  body.flux-2026 .nav-toggle { display: flex; }
  body.flux-2026 .header.is-light .nav-menu {
    background: #fff;
    border-color: var(--line-light);
    box-shadow: 0 16px 40px rgba(11,27,51,.12);
  }
  body.flux-2026 .nav-menu {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    background: #0b1b33;
    border: 1px solid #1e334f;
    border-radius: 18px;
    padding: 16px;
    box-shadow: 0 24px 54px rgba(0,0,0,.45);
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity .22s var(--ease), transform .22s var(--ease);
  }
  body.flux-2026 .nav-menu.active { opacity: 1; transform: none; pointer-events: auto; }
  body.flux-2026 .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: transparent;
    padding: 0;
  }
  body.flux-2026 .nav-link { display: block; }
}
@media (max-width: 420px) {
  body.flux-2026 .nav-cta { padding: 9px 14px; font-size: 14px; }
}


/* ---------- CTA della barra: indipendente dal .btn della pagina ---------- */
body.flux-2026 .header .nav-cta {
  font-family: inherit;
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  background: var(--cobalt);
  color: #fff;
  box-shadow: 0 2px 8px rgba(11, 27, 51, .18);
  transition: background .2s, box-shadow .25s;
}
body.flux-2026 .header .nav-cta:hover {
  background: var(--cobalt-bright);
  color: #fff;
}