/* =========================================================
   SACI COSTRUZIONI — Navbar & Mega-Dropdown
   ========================================================= */

/* ── Top Utility Bar ── */
.top-bar {
  background: var(--color-secondary);
  color: rgba(255, 255, 255, .75);
  font-family: var(--font-heading);
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .04em;
  padding: 8px 0;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 9999;
  transition: transform .4s ease, opacity .4s ease;
}

.top-bar.hidden {
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
}

.top-bar .container {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 24px;
}

.top-bar a {
  color: rgba(255, 255, 255, .75);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color .2s;
}

.top-bar a:hover {
  color: #fff;
}

.top-bar .social-links {
  display: flex;
  gap: 12px;
  margin-right: auto;
}

.top-bar .social-links a {
  font-size: .9rem;
}

/* ── Main Navbar ── */
.navbar {
  position: fixed;
  top: 36px;
  /* height of top-bar */
  left: 0;
  width: 100%;
  z-index: 9998;
  transition: top .4s ease;
  background: transparent;
}

/* Opacity-only transition avoids paint → pure compositor-thread */
.navbar::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  opacity: 0;
  transition: opacity .35s ease;
  pointer-events: none;
  z-index: -1;
  will-change: opacity;
}

.navbar.scrolled {
  top: 0;
}

.navbar.scrolled::before {
  opacity: 1;
}

.navbar.top-hidden {
  top: 0;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

/* ── Logo ── */
.navbar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.navbar-logo img {
  height: 48px;
  width: auto;
  transition: filter .35s ease;
  display: block;
}

/* Navbar trasparente (hero) → logo bianco */
.navbar:not(.scrolled) .navbar-logo img {
  filter: brightness(0) invert(1);
}

/* Navbar scrolled (sfondo bianco) → logo originale */
.navbar.scrolled .navbar-logo img {
  filter: none;
}

/* Fallback text logo (shown if no image) */
.logo-text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  line-height: 1.1;
  color: var(--color-white);
  transition: color .3s;
}

.logo-text span {
  color: var(--color-primary);
  display: block;
  font-size: .7rem;
  letter-spacing: .15em;
  font-weight: 600;
}

.navbar.scrolled .logo-text {
  color: var(--color-secondary);
}

/* ── Nav Links ── */
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 100%;
}

.nav-item {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.nav-item>a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 16px;
  height: 100%;
  font-family: var(--font-heading);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-white);
  transition: color .2s;
  white-space: nowrap;
}

.navbar.scrolled .nav-item>a {
  color: var(--color-secondary);
}

.navbar.scrolled .nav-item>a:hover {
  color: var(--color-primary);
}

.navbar:not(.scrolled) .nav-item>a:hover {
  color: rgba(255,255,255,0.75);
}

.nav-item>a i {
  font-size: .6rem;
  transition: transform .25s;
}

.nav-item.has-dropdown:hover>a i {
  transform: rotate(180deg);
}

/* ── CTA Nav Button ── */
.nav-cta {
  margin-left: 12px;
  padding: 10px 24px !important;
  height: auto !important;
  background: var(--color-primary);
  color: #fff !important;
  border-radius: var(--radius);
  font-size: .78rem !important;
}

.nav-cta:hover {
  background: var(--color-primary-dark) !important;
  color: #fff !important;
}

/* ── Mega Dropdown ── */
.mega-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--color-white);
  box-shadow: 0 20px 60px rgba(0,0,0,.13), 0 4px 16px rgba(0,0,0,.07);
  border-top: 3px solid var(--color-primary);
  border-radius: 0 0 12px 12px;
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 0;
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition: opacity .22s ease, transform .22s ease, visibility .22s;
  min-width: 680px;
  overflow: hidden;
}

.nav-item.has-dropdown:hover .mega-dropdown {
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* Left panel */
.dropdown-panel {
  background: var(--color-primary);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.dropdown-panel-tag {
  font-family: var(--font-heading);
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(255,255,255,.6);
}
.dropdown-panel-desc {
  font-family: var(--font-heading);
  font-size: .82rem;
  font-weight: 500;
  color: rgba(255,255,255,.85);
  line-height: 1.55;
  flex: 1;
}
.dropdown-panel-cta {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-heading);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.35);
  padding-bottom: 2px;
  width: fit-content;
  transition: gap .2s ease, border-color .2s ease;
}
.dropdown-panel-cta:hover { gap: 11px; border-color: #fff; }
.dropdown-panel-cta i { font-size: .6rem; }

/* Service cards grid (simplified dropdown) */
.dropdown-services {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding: 20px 24px;
  align-content: center;
}

.dropdown-service-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  border: 1.5px solid var(--color-border);
  border-radius: 8px;
  font-family: var(--font-heading);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--color-secondary);
  text-decoration: none;
  line-height: 1.3;
  transition: background .18s ease, border-color .18s ease, color .18s ease;
}

.dropdown-service-card:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.dropdown-service-card i {
  font-size: .58rem;
  opacity: .3;
  flex-shrink: 0;
  transition: opacity .18s ease, transform .18s ease;
}

.dropdown-service-card:hover i {
  opacity: 1;
  transform: translateX(4px);
}

/* ── Simple Dropdown (single column) ── */
.simple-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-white);
  box-shadow: var(--shadow-md);
  border-top: 3px solid var(--color-primary);
  border-radius: 0 0 var(--radius) var(--radius);
  padding: 8px 0;
  min-width: 200px;
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition: opacity .2s ease, visibility .2s;
}

.nav-item:hover .simple-dropdown {
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
}

.simple-dropdown a {
  display: block;
  padding: 10px 20px;
  font-family: var(--font-heading);
  font-size: .8rem;
  font-weight: 600;
  color: var(--color-secondary);
  letter-spacing: .04em;
  transition: background .2s, color .2s;
}

.simple-dropdown a:hover {
  background: var(--color-light);
  color: var(--color-primary);
}

/* ── Hamburger ── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
  position: relative;
  z-index: 1;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform .3s ease, opacity .3s ease, background .3s ease;
}

.navbar.scrolled .hamburger span {
  background: var(--color-secondary);
}

/* Dark spans when light mobile nav is open */
.navbar.mobile-open .hamburger span {
  background: var(--color-secondary) !important;
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Colored logo when light mobile nav is open ── */
.navbar.mobile-open .navbar-logo img {
  filter: none !important;
}

/* ── Mobile Nav Overlay ── */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background: #fff;
  z-index: 9997;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform .6s cubic-bezier(.76, 0, .24, 1);
  will-change: transform;
}
.mobile-nav.open { transform: translateX(0); }

.mobile-nav-inner {
  padding: 100px 28px 56px;
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

/* ── Nav Items ── */
.mobile-nav-items { flex: 1; }

/* Initial state on container level — fixes trigger visibility bug */
.mobile-nav-items > * {
  opacity: 0;
  transform: translateY(20px);
}
.mobile-nav.open .mobile-nav-items > * { animation: mobileItemIn .52s cubic-bezier(.22,1,.36,1) forwards; }
.mobile-nav.open .mobile-nav-items > *:nth-child(1) { animation-delay: .10s; }
.mobile-nav.open .mobile-nav-items > *:nth-child(2) { animation-delay: .18s; }
.mobile-nav.open .mobile-nav-items > *:nth-child(3) { animation-delay: .26s; }
.mobile-nav.open .mobile-nav-items > *:nth-child(4) { animation-delay: .34s; }

@keyframes mobileItemIn {
  to { opacity: 1; transform: translateY(0); }
}

.mobile-nav-item {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(1.9rem, 7.5vw, 2.8rem);
  font-weight: 900;
  letter-spacing: -.02em;
  text-transform: uppercase;
  color: var(--color-secondary);
  padding: 18px 0;
  border-bottom: 1px solid rgba(0,0,0,.07);
  transition: color .2s;
}
.mobile-nav-item:hover { color: var(--color-primary); }

/* ── Services Trigger ── */
.mobile-has-sub { border-bottom: 1px solid rgba(0,0,0,.07); }

.mobile-nav-trigger {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-heading);
  font-size: clamp(1.9rem, 7.5vw, 2.8rem);
  font-weight: 900;
  letter-spacing: -.02em;
  text-transform: uppercase;
  color: var(--color-secondary);
  padding: 18px 0;
  transition: color .2s;
}
.mobile-nav-trigger:hover { color: var(--color-primary); }
.mobile-nav-trigger[aria-expanded="true"] { color: var(--color-primary); }
.mobile-nav-trigger i {
  font-size: .72rem;
  color: var(--color-primary);
  transition: transform .35s cubic-bezier(.4,0,.2,1);
  flex-shrink: 0;
}
.mobile-nav-trigger[aria-expanded="true"] i { transform: rotate(180deg); }

/* ── Services Submenu ── */
.mobile-nav-sub {
  height: 0;
  overflow: hidden;
  transition: height .44s cubic-bezier(.4,0,.2,1);
  will-change: height;
}
.mobile-nav-sub-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  background: #F4F6F9;
  border-radius: 14px;
  padding: 14px 14px 18px;
  margin: 6px 0 10px;
}

.mobile-nav-sub a {
  display: flex;
  align-items: center;
  padding: 12px 14px;
  font-family: var(--font-heading);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--color-secondary);
  background: #fff;
  border-radius: 8px;
  border: 1.5px solid var(--color-border);
  transition: background .15s, color .15s, border-color .15s;
  line-height: 1.3;
}

.mobile-nav-sub a:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  padding-left: 14px;
}

/* ── Footer ── */
.mobile-nav-footer {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid rgba(0,0,0,.07);
  opacity: 0;
  transform: translateY(20px);
}
.mobile-nav.open .mobile-nav-footer {
  animation: mobileItemIn .52s cubic-bezier(.22,1,.36,1) .42s forwards;
}
.mobile-nav-cta {
  display: block;
  text-align: center;
  padding: 17px !important;
  font-family: var(--font-heading);
  font-size: .82rem !important;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  border-radius: var(--radius) !important;
  background: var(--color-primary);
  color: #fff !important;
  margin-bottom: 20px;
  transition: background .2s;
}
.mobile-nav-cta:hover { background: var(--color-primary-dark) !important; }
.mobile-nav-contacts {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.mobile-nav-contacts a {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: .78rem;
  font-weight: 500;
  color: #9AA0AD;
  transition: color .2s;
  border: none !important;
  padding: 0 !important;
}
.mobile-nav-contacts a:hover { color: var(--color-secondary); }
.mobile-nav-contacts i { color: var(--color-primary); width: 14px; flex-shrink: 0; }

/* ── Responsive ── */
@media (max-width: 1024px) {

  .nav-links,
  .top-bar {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .mobile-nav {
    display: block;
  }

  .navbar .container {
    justify-content: space-between;
  }
}

@media (max-width: 768px) {
  .top-bar {
    display: none;
  }

  .navbar {
    top: 0;
  }
}