.site-header {
  position: fixed;
  top: 24px;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 10px 10px 10px 28px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

.site-logo img {
  width: auto;
  height: 44px;
  object-fit: contain;
}

.site-logo-light {
  display: none;
}

.nav-pill {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 10px 18px;
  border-radius: var(--radius-link);
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: -0.1px;
  line-height: 2em;
  text-transform: uppercase;
  color: var(--color-text);
  background-color: transparent;
  transition: background-color 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.is-active {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-accent);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 10px 10px 20px;
  background-color: var(--color-accent);
  color: var(--color-text-on-accent);
  border-radius: var(--radius-button);
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: -0.1px;
  text-transform: uppercase;
  white-space: nowrap;
  transition: box-shadow 0.2s ease;
}

.nav-cta:hover {
  box-shadow: 0 0 20px 2px var(--color-accent);
}

.nav-cta-icon {
  width: 16px;
  height: 16px;
  fill: var(--color-text-on-accent);
  transform: rotate(-45deg);
  flex-shrink: 0;
}

/* Pulsante hamburger — visibile solo su mobile */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  flex-shrink: 0;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.08);
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  margin: 0 auto;
  border-radius: 2px;
  background-color: var(--color-text);
  transition: transform 0.25s ease, opacity 0.2s ease;
}

/* Hamburger → X quando il menu è aperto */
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) 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(-7px) rotate(-45deg);
}

@media (max-width: 1220px) {
  .site-header {
    gap: 10px;
  }

  .nav-link {
    padding: 10px 12px;
    font-size: 11px;
  }
}

@media (max-width: 900px) {
  .site-header {
    left: 16px;
    right: 16px;
    top: 16px;
    gap: 10px;
    padding: 8px 8px 8px 16px;
  }

  .site-logo img {
    height: 36px;
  }

  .nav-toggle {
    display: flex;
  }

  /* Il menu diventa un pannello a tendina sotto la barra */
  .nav-pill {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    max-height: 0;
    padding: 0 12px;
    overflow: hidden;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 24px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
    opacity: 0;
    visibility: hidden;
    transition: max-height 0.3s ease, opacity 0.25s ease, padding 0.3s ease, visibility 0.3s;
  }

  .nav-pill.is-open {
    max-height: 480px;
    padding: 12px;
    opacity: 1;
    visibility: visible;
  }

  .nav-link {
    padding: 14px 16px;
    border-radius: 16px;
    font-size: 13px;
    text-align: left;
  }

  .nav-cta {
    padding: 10px 8px 10px 16px;
    font-size: 11px;
  }
}

@media (max-width: 480px) {
  /* Su schermi molto stretti la CTA lascia spazio a logo + hamburger */
  .nav-cta {
    display: none;
  }
}