.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--color-line);
  box-shadow: var(--shadow-header);
  transition: box-shadow 0.25s var(--ease);
}
.site-header.is-scrolled { box-shadow: 0 4px 20px rgba(23, 18, 31, 0.09); }

@supports (backdrop-filter: blur(8px)) {
  .site-header { background: rgba(255, 255, 255, 0.88); backdrop-filter: saturate(1.4) blur(10px); }
}

/* Con il menu aperto il backdrop-filter va tolto: altrimenti il menu fixed si ancorerebbe all'header */
.site-header.is-menu-open {
  background: #fff;
  backdrop-filter: none;
  border-bottom-color: transparent;
  box-shadow: none;
}

.site-header__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas: "logo cta toggle";
  align-items: center;
  gap: 8px;
  height: var(--header-h);
}

.brand {
  position: relative;
  z-index: 2;
  grid-area: logo;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.brand__logo { flex: none; width: 34px; height: 34px; }
.brand__name {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  white-space: nowrap;
  transform: translateY(1px); /* compensa l'ascent di Sora per centrare otticamente col logo */
  color: var(--color-purple);
}

.site-header__actions { grid-area: cta; justify-self: end; display: flex; align-items: center; gap: 8px; }
.site-header__login { display: none; }
.site-header__cta { height: 32px; padding: 0 12px; font-size: 0.75rem; }
.site-header__cta .btn__icon { display: none; } /* su schermi stretti non c'è spazio per la freccia */
.site-header.is-menu-open .site-header__actions { visibility: hidden; }

/* Hamburger */
.nav-toggle {
  position: relative;
  z-index: 2;
  grid-area: toggle;
  width: 44px;
  height: 44px;
  margin-right: -8px;
  padding: 0;
  border: 0;
  background: none;
  color: var(--color-ink);
  cursor: pointer;
}
.nav-toggle__bar {
  position: absolute;
  left: 12px;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.25s var(--ease), opacity 0.2s;
}
.nav-toggle__bar:nth-child(1) { top: 15px; }
.nav-toggle__bar:nth-child(2) { top: 21px; }
.nav-toggle__bar:nth-child(3) { top: 27px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Menu mobile: pannello a tutto schermo sotto la riga logo/chiudi */
.site-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1;
  height: 100vh;
  height: 100dvh;
  padding: var(--header-h) 0 24px;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: #fff;
  border-radius: 0 0 24px 24px;
}
.site-nav.is-open {
  display: block;
  animation: nav-in 0.22s var(--ease);
}
html.menu-open { overflow: hidden; }

.site-nav__panel[hidden] { display: none; }
.site-nav__panel--sub { animation: nav-in 0.22s var(--ease); }

.site-nav__list { margin: 0; padding: 0; list-style: none; }
.site-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 60px;
  padding: 0 var(--gutter);
  border: 0;
  border-bottom: 1px solid var(--color-line);
  background: none;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-ink);
  text-align: left;
  text-decoration: none;
  cursor: pointer;
}
.site-nav__link svg { width: 22px; height: 22px; color: var(--color-purple); }
.site-nav__link .i-chevron { display: none; }
.site-nav__link.is-soon { color: var(--color-subtle); cursor: default; }
.site-nav__link.is-soon small { margin-left: 12px; font-size: 0.75rem; font-weight: 500; white-space: nowrap; color: var(--color-subtle); }
.site-nav__link[aria-current="page"] { color: var(--color-purple); }

.site-nav__back {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  min-height: 56px;
  padding: 0 var(--gutter);
  border: 0;
  background: none;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--color-ink);
  cursor: pointer;
}
.site-nav__back svg { width: 20px; height: 20px; }

.site-nav__actions { display: grid; gap: 12px; padding: 30px 24px 0; }
.site-nav__login, .site-nav__cta { width: 100%; max-width: 430px; margin-inline: auto; display: flex; }

@keyframes dropdown-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

@keyframes nav-in {
  from { opacity: 0; transform: translateX(10px); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 379px) {
  .site-header__inner { gap: 6px; }
  .brand { gap: 8px; }
  .brand__name { font-size: 0.9375rem; }
  .site-header__cta { padding: 0 10px; }
}

@media (min-width: 768px) {
  .site-header__inner {
    grid-template-columns: auto 1fr auto;
    grid-template-areas: "logo nav cta";
    gap: 40px;
  }
  .brand__logo { width: 40px; height: 40px; }
  .brand__name { font-size: 1.25rem; }
  .site-header__actions { justify-self: end; gap: 10px; }
  .site-header__login { display: inline-flex; }
  .site-header__login, .site-header__cta { height: 38px; padding: 0 18px; font-size: 0.875rem; }
  .site-header__cta .btn__icon { display: block; }
  .site-header.is-menu-open .site-header__actions { visibility: visible; }
  .nav-toggle { display: none; }

  .site-nav {
    grid-area: nav;
    display: block;
    position: relative;
    height: auto;
    padding: 0;
    overflow: visible;
    background: none;
    border-radius: 0;
  }
  .site-nav.is-open { animation: none; }
  .site-nav__list { display: flex; gap: 32px; }
  .site-nav__link {
    position: relative;
    display: inline-flex;
    width: auto;
    min-height: 0;
    padding: 0;
    border: 0;
    font-size: 1rem;
    font-weight: 500;
  }
  .site-nav__link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -6px;
    height: 2px;
    border-radius: 2px;
    background: var(--color-yellow);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s var(--ease);
  }
  .site-nav__link:hover::after,
  .site-nav__link:focus-visible::after { transform: scaleX(1); }

  /* Su desktop CTA e sottolivelli del menu mobile non servono (dropdown desktop: da fare con i sottolivelli reali) */
  .site-nav__actions,
  .site-nav__link .i-arrow { display: none; }

  /* Voce con dropdown: chevron */
  .site-nav__link[data-submenu-trigger] { gap: 6px; }
  .site-nav__link .i-chevron { display: block; width: 14px; height: 14px; color: var(--color-subtle); transition: transform 0.25s var(--ease); }
  .site-nav__link[aria-expanded="true"] .i-chevron { transform: rotate(180deg); }

  /* Dropdown "Funzionalità" */
  .site-nav__panel--sub {
    position: absolute;
    left: -18px;
    top: calc(100% + 30px);
    z-index: 60;
    width: 340px;
    padding: 8px;
    background: #fff;
    border: 1px solid var(--color-line);
    border-radius: 18px;
    box-shadow: 0 24px 50px -20px rgba(23, 18, 31, 0.28);
    animation: dropdown-in 0.18s var(--ease);
  }
  .site-nav__panel--sub::before { /* ponte invisibile: il mouse può passare dalla voce al menu */
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: -32px;
    height: 32px;
  }
  .site-nav__panel--sub .site-nav__back { display: none; }
  .site-nav__panel--sub .site-nav__list { display: block; }
  .site-nav__panel--sub .site-nav__link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    font-size: 0.9375rem;
  }
  .site-nav__panel--sub .site-nav__link::after { display: none; }
  .site-nav__panel--sub a.site-nav__link:hover,
  .site-nav__panel--sub a.site-nav__link:focus-visible { background: var(--color-purple-50); color: var(--color-purple); }
  .site-nav__panel--sub a.site-nav__link { font-weight: 600; }
}

@media (prefers-reduced-motion: reduce) {
  .site-nav.is-open, .site-nav__panel--sub { animation: none; }
  .site-nav__link .i-chevron { transition: none; }
  .nav-toggle__bar, .site-nav__link::after, .site-header { transition: none; }
}

/* Tablet: con tre voci di menu più «Accedi» e CTA servono spazi più stretti */
@media (min-width: 768px) and (max-width: 1023px) {
  .site-header__inner { gap: 20px; }
  .site-nav__list { gap: 22px; }
  .site-header__actions { gap: 8px; }
  .site-header__login, .site-header__cta { padding: 0 14px; }
}

/* Voce di menu in più (Gratuito): sui tablet la riga è piena, resta raggiungibile dal footer e dal menu mobile */
@media (min-width: 768px) and (max-width: 1023px) {
  .site-nav__item--extra { display: none; }
}