.ph-site-header {
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.055);
}

.ph-site-header .ph-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.95rem;
  min-width: max-content;
  line-height: 1;
}

.ph-site-header .ph-brand-icon {
  flex: 0 0 3.25rem;
  width: 3.25rem;
  height: 3.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, filter 0.2s ease;
}

.ph-site-header .ph-brand-icon .fa-cloud {
  font-size: 3rem;
  line-height: 1;
}

.ph-site-header .ph-brand-icon .fa-code {
  top: 55%;
  font-size: 1.05rem;
}

.ph-site-header .ph-brand > span {
  display: inline-block;
  line-height: 0.95;
  transform: translateY(4px);
}

.ph-site-header .ph-brand:hover .ph-brand-icon,
.ph-site-header .ph-brand:focus-visible .ph-brand-icon {
  transform: translateY(-1px);
}

.ph-cloud-pulse {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 1.7rem;
  width: 1.7rem;
  height: 1.25rem;
  color: #1488e5;
  line-height: 1;
  transform: translateY(1px);
  isolation: isolate;
  overflow: visible;
}

.ph-cloud-pulse .fa-cloud {
  position: absolute;
  inset: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: currentColor;
  font-size: 1.35rem;
  line-height: 1;
}

.ph-cloud-pulse .ph-cloud-pulse-icon {
  z-index: 2;
  filter:
    drop-shadow(0 1px 0 rgba(11, 105, 181, 0.46))
    drop-shadow(0 5px 8px rgba(20, 136, 229, 0.28));
}

.ph-cloud-pulse .ph-cloud-pulse-halo {
  z-index: 1;
  opacity: 0.76;
  transform-origin: 50% 62%;
  filter: drop-shadow(0 0 10px rgba(20, 136, 229, 0.55));
  animation: ph-cloud-pulse 1.45s cubic-bezier(0.2, 0, 0.15, 1) infinite;
}

.ph-cloud-pulse .ph-cloud-pulse-code {
  position: absolute;
  left: 50%;
  top: 57%;
  z-index: 3;
  color: #fff;
  font-size: 0.46rem;
  line-height: 1;
  text-shadow: 0 1px 0 rgba(11, 105, 181, 0.5);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

@keyframes ph-cloud-pulse {
  0% {
    opacity: 0.78;
    transform: scale(0.92);
  }

  45% {
    opacity: 0.38;
  }

  100% {
    opacity: 0;
    transform: scale(1.92);
  }
}

.ph-site-header .ph-nav {
  gap: clamp(1.2rem, 2vw, 2.15rem);
}

.ph-site-header .ph-nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.62rem 0 0.78rem;
  color: #64748b;
  font-size: 0.94rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0;
  text-decoration: none;
  transition: color 0.22s ease, transform 0.22s ease;
}

.ph-site-header .ph-nav-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.ph-site-header .ph-nav-dropdown::after {
  content: "";
  position: absolute;
  top: 100%;
  left: -0.5rem;
  right: -0.5rem;
  height: 1rem;
}

.ph-site-header .ph-nav-dropdown-toggle {
  gap: 0.45rem;
  border: 0;
  background: transparent;
  cursor: pointer;
  font-family: inherit;
}

.ph-site-header .ph-nav-dropdown-toggle .fa-chevron-down {
  transition: transform 0.2s ease;
}

.ph-site-header .ph-nav-dropdown:hover .ph-nav-dropdown-toggle .fa-chevron-down,
.ph-site-header .ph-nav-dropdown:focus-within .ph-nav-dropdown-toggle .fa-chevron-down {
  transform: rotate(180deg);
}

.ph-site-header .ph-nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 0.75rem);
  left: 50%;
  z-index: 60;
  width: 15rem;
  padding: 0.5rem;
  border: 1px solid rgba(226, 232, 240, 0.95);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.12);
  opacity: 0;
  pointer-events: none;
  transform: translate3d(-50%, 0.5rem, 0) scale(0.98);
  transform-origin: top center;
  transition:
    opacity 0.18s ease,
    transform 0.18s ease,
    visibility 0.18s ease;
  visibility: hidden;
}

.ph-site-header .ph-nav-dropdown:hover .ph-nav-dropdown-menu,
.ph-site-header .ph-nav-dropdown:focus-within .ph-nav-dropdown-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translate3d(-50%, 0, 0) scale(1);
  visibility: visible;
}

.ph-site-header .ph-nav-dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.85rem 0.9rem;
  border-radius: 0.75rem;
  color: #475569;
  font-size: 0.9rem;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
  transition:
    background-color 0.2s ease,
    color 0.2s ease,
    transform 0.2s ease;
}

.ph-site-header .ph-nav-dropdown-item i {
  width: 1rem;
  color: #1488e5;
  text-align: center;
}

.ph-site-header .ph-nav-dropdown-item:hover,
.ph-site-header .ph-nav-dropdown-item:focus-visible {
  background: #f8fafc;
  color: #0f172a;
  transform: translateX(2px);
}

.ph-site-header .ph-nav-dropdown-item.is-active {
  background: #e0f2fe;
  color: #1488e5;
}

.ph-site-header .ph-nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #1488e5 0%, #0b69b5 100%);
  box-shadow: 0 5px 14px rgba(20, 136, 229, 0.28);
  transition: width 0.25s ease;
}

.ph-site-header .ph-nav-link:hover,
.ph-site-header .ph-nav-link:focus-visible {
  color: #0f172a;
  transform: translateY(-1px);
}

.ph-site-header .ph-nav-link.is-active {
  color: #1488e5;
}

.ph-site-header .ph-nav-link:hover::after,
.ph-site-header .ph-nav-link:focus-visible::after,
.ph-site-header .ph-nav-link.is-active::after {
  width: 100%;
}

.ph-site-header .ph-nav-link:focus-visible {
  outline: 2px solid rgba(20, 136, 229, 0.3);
  outline-offset: 8px;
  border-radius: 8px;
}

.ph-site-header #mobile-menu a {
  transition: color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.ph-site-header #mobile-menu a:hover,
.ph-site-header #mobile-menu a:focus-visible {
  transform: translateX(4px);
}

.ph-site-header .ph-mobile-about-summary::-webkit-details-marker {
  display: none;
}

.ph-site-header .ph-mobile-about[open] .ph-mobile-about-summary {
  color: #1488e5;
}

.ph-site-header .ph-mobile-about[open] .ph-mobile-about-summary .fa-chevron-down {
  transform: rotate(180deg);
}

@media (min-width: 768px) and (max-width: 1160px) {
  .ph-site-header .ph-nav {
    gap: 1rem;
  }

  .ph-site-header .ph-nav-link {
    font-size: 0.84rem;
  }

  .ph-site-header .btn-3d {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ph-cloud-pulse .ph-cloud-pulse-halo {
    animation: none;
    opacity: 0.34;
    transform: scale(1.36);
  }
}