.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  backdrop-filter: blur(14px);
  background: rgba(5, 6, 7, 0.5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-wrap {
  min-height: calc(85px * var(--ui-scale));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  letter-spacing: 1px;
  font-size: 2.3rem;
  margin-top: 4px;
  white-space: nowrap;
}

.brand img {
  width: calc(84px * var(--ui-scale));
  height: calc(84px * var(--ui-scale));
  object-fit: contain;
  filter: drop-shadow(0 0 12px var(--red-main-light));
}

.brand small {
  display: block;
  font-size: 1.05rem;
  color: var(--red-accent-light);
  margin-top: -8px;
  font-family: var(--font-body);
  letter-spacing: 0.7px;
}

.main-nav {
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.nav-groups {
  display: grid;
  grid-template-columns: repeat(5, max-content);
  justify-content: end;
  align-items: start;
  column-gap: 0.3rem;
  row-gap: 0.3rem;
}

.nav-btn {
  align-self: center;
}

.nav-group-head {
  grid-row: 1;
  display: flex;
  align-items: center;
  gap: 0.1rem;
}

.nav-expand-toggle {
  display: inline-grid;
  place-items: center;
  width: calc(20px * var(--ui-scale));
  height: calc(40px * var(--ui-scale));
  padding: 0;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: #b7bdcf;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.nav-expand-toggle svg {
  width: calc(10px * var(--ui-scale));
  height: calc(10px * var(--ui-scale));
  display: block;
  transition: transform 0.22s ease;
}

.nav-expand-toggle:hover {
  color: #fff;
  background: rgba(220, 30, 40, 0.16);
  border-color: rgba(255, 85, 85, 0.3);
}

.nav-expand-toggle[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.nav-sections {
  grid-row: 2;
  grid-column: 1 / -1;
  display: none;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.4rem;
  column-gap: 0.4rem;
}

.nav-sections.is-active {
  display: flex;
}

.nav-toggle-group {
  display: none;
  align-items: center;
  gap: 0.6rem;
}

.nav-current-indicator {
  font-family: var(--font-body);
  font-size: calc(1.7rem * var(--ui-scale));
  font-weight: 600;
  color: #d7dceb;
  letter-spacing: 0.2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: calc(160px * var(--ui-scale));
}

.main-nav a {
  position: relative;
  padding: calc(10px * var(--ui-scale)) calc(14px * var(--ui-scale));
  border-radius: calc(10px * var(--ui-scale));
  color: #d7dceb;
  font-weight: 600;
  border: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
  
}

.main-nav a[data-page] {
  padding-left: calc(10px * var(--ui-scale));
  padding-right: calc(10px * var(--ui-scale));
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: calc(12px * var(--ui-scale));
  right: calc(12px * var(--ui-scale));
  bottom: calc(6px * var(--ui-scale));
  height: calc(2px * var(--ui-scale));
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--red-accent-light), transparent);
  transform: scaleX(0.2);
  opacity: 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.main-nav a[data-section]:not(.btn) {
  font-size: 0.84rem;
  letter-spacing: 0.35px;
  padding: calc(6px * var(--ui-scale)) calc(12px * var(--ui-scale));
}

.main-nav a:hover,
.main-nav a.active {
  background: linear-gradient(140deg, rgba(220, 30, 40, 0.24), rgba(220, 30, 40, 0.08));
  border-color: rgba(255, 85, 85, 0.36);
  color: #fff;
}

.main-nav a:hover::after,
.main-nav a.active::after {
  transform: scaleX(1);
  opacity: 1;
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: calc(48px * var(--ui-scale));
  height: calc(48px * var(--ui-scale));
  padding: 0;
  border: 1px solid rgba(220, 30, 40, 0.46);
  border-radius: calc(12px * var(--ui-scale));
  background:
    linear-gradient(120deg, rgba(220, 30, 40, 0.28), rgba(220, 30, 40, 0.08)),
    rgba(9, 12, 17, 0.92);
  color: #f7f9ff;
  box-shadow: 0 calc(10px * var(--ui-scale)) calc(24px * var(--ui-scale)) rgba(0, 0, 0, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.menu-toggle-icon {
  position: relative;
  display: inline-block;
  width: calc(22px * var(--ui-scale));
  height: calc(16px * var(--ui-scale));
}

.menu-toggle-icon span {
  position: absolute;
  left: 0;
  width: 100%;
  height: calc(2px * var(--ui-scale));
  border-radius: 999px;
  background: currentColor;
  transition: transform 0.25s ease, opacity 0.2s ease, top 0.25s ease;
}

.menu-toggle-icon span:nth-child(1) {
  top: 0;
}

.menu-toggle-icon span:nth-child(2) {
  top: calc(7px * var(--ui-scale));
}

.menu-toggle-icon span:nth-child(3) {
  top: calc(14px * var(--ui-scale));
}

.menu-toggle[aria-expanded="true"] .menu-toggle-icon span:nth-child(1) {
  top: calc(7px * var(--ui-scale));
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-icon span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-toggle-icon span:nth-child(3) {
  top: calc(7px * var(--ui-scale));
  transform: rotate(-45deg);
}

.menu-toggle:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 85, 85, 0.78);
  box-shadow: 0 14px 26px rgba(0, 0, 0, 0.45);
}

.menu-toggle:focus-visible {
  outline: none;
  box-shadow: 0 0 0 calc(3px * var(--ui-scale)) rgba(220, 30, 40, 0.3), 0 calc(14px * var(--ui-scale)) calc(26px * var(--ui-scale)) rgba(0, 0, 0, 0.45);
}

@media (max-width: 1040px) {
  .site-header .brand {
    font-size: 1.65rem;
    margin-top: 0;
  }

  .site-header .brand img {
    width: calc(62px * var(--ui-scale));
    height: calc(62px * var(--ui-scale));
  }

  .site-header .brand small {
    font-size: 0.9rem;
    margin-top: -6px;
  }

  .site-header .nav-toggle-group {
    display: flex;
  }

  .site-header .menu-toggle {
    display: inline-grid;
    place-items: center;
  }

  .site-header .main-nav {
    position: absolute;
    top: calc(100% + (8px * var(--ui-scale)));
    right: 0;
    left: auto;
    width: min(calc(320px * var(--ui-scale)), calc(100vw - 1.4rem));
    max-height: calc(100vh - 100% - (24px * var(--ui-scale)));
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: calc(8px * var(--ui-scale));
    padding: calc(12px * var(--ui-scale));
    border-radius: calc(16px * var(--ui-scale));
    background: linear-gradient(155deg, rgba(12, 17, 24, 0.98), rgba(9, 12, 18, 0.98));
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 calc(24px * var(--ui-scale)) calc(38px * var(--ui-scale)) rgba(0, 0, 0, 0.45);
    transform: translateX(112%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.28s ease, opacity 0.24s ease;
    z-index: 59;
  }

  .site-header .main-nav.is-open {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
  }

  .site-header .main-nav a {
    width: 100%;
  }

  .site-header .main-nav .nav-groups {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr;
    row-gap: calc(4px * var(--ui-scale));
  }

  .site-header .main-nav .nav-group-head {
    width: 100%;
    padding-bottom: calc(6px * var(--ui-scale));
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .site-header .main-nav .nav-group-head:last-of-type {
    border-bottom: none;
  }

  .site-header .main-nav .nav-group-head a[data-page] {
    flex: 1;
  }

  .site-header .main-nav .nav-expand-toggle {
    width: calc(36px * var(--ui-scale));
  }

  .site-header .main-nav .nav-sections {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    grid-column: 1;
  }

  .site-header .main-nav .nav-group-head[data-page-group="index.html"] {
    grid-row: 1;
  }

  .site-header .main-nav .nav-sections[data-page-group="index.html"] {
    grid-row: 2;
  }

  .site-header .main-nav .nav-group-head[data-page-group="cura-terreni.html"] {
    grid-row: 3;
  }

  .site-header .main-nav .nav-sections[data-page-group="cura-terreni.html"] {
    grid-row: 4;
  }

  .site-header .main-nav .nav-group-head[data-page-group="galleria.html"] {
    grid-row: 5;
  }

  .site-header .main-nav .nav-sections[data-page-group="galleria.html"] {
    grid-row: 6;
  }

  .site-header .main-nav .nav-group-head[data-page-group="collaboratori.html"] {
    grid-row: 7;
  }

  .site-header .main-nav .nav-sections[data-page-group="collaboratori.html"] {
    grid-row: 8;
  }

  .site-header .main-nav .nav-group-head[data-page-group="documenti.html"] {
    grid-row: 9;
  }

  .site-header .main-nav .nav-sections[data-page-group="documenti.html"] {
    grid-row: 10;
  }

  .site-header .main-nav a[data-section]:not(.btn) {
    width: 100%;
    margin-left: 0;
    text-align: right;
    border-color: transparent;
    background: transparent;
    color: #f2c9c9;
  }

}