/* Header & Navigation Styles */
.header-wrapper {
  --gx: 1.5rem;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  padding: 1.25rem max(var(--gx), calc((100vw - 1440px) / 2 + var(--gx))) 0.9rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  background: linear-gradient(180deg, rgba(2, 9, 20, 0.7) 0%, rgba(2, 9, 20, 0) 100%);
  border-bottom: 1px solid transparent;
  transition: background-color var(--transition-base), padding var(--transition-base),
    border-color var(--transition-base), box-shadow var(--transition-base);
}

.header-wrapper.scrolled {
  padding-top: 0.7rem;
  padding-bottom: 0.7rem;
  background: rgba(2, 9, 20, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: rgba(0, 180, 255, 0.22);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

@media (min-width: 640px) {
  .header-wrapper { --gx: 2.5rem; }
}

@media (min-width: 1024px) {
  .header-wrapper { --gx: 3.5rem; }
}

/* Nav Links Container */
.desktop-nav {
  display: none;
  align-items: center;
  gap: 2rem;
  font-size: 13.5px;
  font-weight: 400;
  letter-spacing: 0.01em;
}

@media (min-width: 1180px) {
  .desktop-nav {
    display: flex;
  }
}

@media (min-width: 1280px) {
  .desktop-nav {
    gap: 2.25rem;
  }
}

.nav-link {
  position: relative;
  padding: 0.375rem 0;
  color: rgba(255, 255, 255, 0.9);
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover {
  color: #ffffff;
}

.nav-link.active {
  color: var(--cyan-bright);
  font-weight: 500;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--cyan-bright);
  border-radius: 9999px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

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

/* Dropdown Parent */
.nav-dropdown-wrapper {
  position: relative;
}

.dropdown-trigger {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0;
  color: rgba(255, 255, 255, 0.9);
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.dropdown-trigger:hover {
  color: #ffffff;
}

.dropdown-trigger.active {
  color: var(--cyan-bright);
  font-weight: 500;
}

.dropdown-chevron {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
  color: rgba(255, 255, 255, 0.8);
}

.dropdown-chevron.rotated {
  transform: rotate(180deg);
  color: var(--cyan-bright);
}

/* Dropdown Popover Menus */
.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  margin-top: 0.5rem;
  border-radius: 0.5rem;
  background-color: rgba(4, 18, 38, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-cyan);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  padding: 0.5rem;
  z-index: 50;
}

.dropdown-menu.open {
  display: block;
  animation: dropIn 180ms ease-out;
}

/* invisible bridge so hover-open survives the gap under the trigger */
.dropdown-menu::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: -0.6rem;
  height: 0.6rem;
}

@media (hover: hover) {
  .nav-dropdown-wrapper:not(.no-hover):hover > .dropdown-menu {
    display: block;
    animation: dropIn 180ms ease-out;
  }

  .nav-dropdown-wrapper:not(.no-hover):hover .dropdown-chevron {
    transform: rotate(180deg);
    color: var(--cyan-bright);
  }
}

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

.dropdown-menu-left {
  left: 0;
  width: 18rem;
}

.dropdown-menu-right {
  right: 0;
  width: 11rem;
}

.dropdown-item {
  width: 100%;
  text-align: left;
  padding: 0.625rem 0.875rem;
  border-radius: 0.375rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
  background-color: rgba(255, 255, 255, 0.06);
}

.dropdown-item-num {
  font-size: 11px;
  font-family: monospace;
  color: var(--cyan-primary);
  margin-top: 1px;
  line-height: 1.2;
}

.dropdown-item-title {
  font-size: 12px;
  font-weight: 500;
  color: #ffffff;
  transition: color var(--transition-fast);
}

.dropdown-item:hover .dropdown-item-title {
  color: var(--cyan-bright);
}

.dropdown-item-desc {
  font-size: 11px;
  color: #94a3b8;
  margin-top: 2px;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Language Dropdown Items */
.lang-item {
  width: 100%;
  text-align: left;
  padding: 0.45rem 0.75rem;
  border-radius: 0.25rem;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #cbd5e1;
  transition: all var(--transition-fast);
}

.lang-item:hover {
  background-color: rgba(255, 255, 255, 0.06);
  color: #ffffff;
}

.lang-item.selected {
  background-color: rgba(0, 210, 255, 0.15);
  color: var(--cyan-bright);
  font-weight: 500;
}

/* Header Right Buttons */
.header-actions {
  display: none;
  align-items: center;
  gap: 1.5rem;
  flex-shrink: 0;
}

@media (min-width: 640px) {
  .header-actions {
    display: flex;
  }
}

.btn-contact-outline {
  border: 1px solid rgba(0, 200, 255, 0.65);
  background-color: rgba(4, 24, 48, 0.45);
  color: #ffffff;
  font-size: 13px;
  font-weight: 500;
  padding: 0.625rem 1.25rem;
  border-radius: 7px;
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  box-shadow: 0 0 16px rgba(0, 200, 255, 0.2);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-contact-outline:hover {
  background-color: rgba(0, 200, 255, 0.2);
  border-color: var(--cyan-bright);
  box-shadow: 0 0 22px rgba(0, 229, 255, 0.35);
}

/* ---- Mobile menu button: three bars morph into a cross ---- */
.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  flex-shrink: 0;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #fff;
  transition: border-color var(--transition-base), background-color var(--transition-base), box-shadow var(--transition-base);
  -webkit-tap-highlight-color: transparent;
}

.mobile-menu-btn:hover,
.mobile-menu-btn[aria-expanded='true'] {
  border-color: var(--cyan-bright);
  background: rgba(0, 210, 255, 0.12);
  box-shadow: 0 0 18px rgba(0, 210, 255, 0.28);
}

.burger {
  position: relative;
  display: block;
  width: 1.2rem;
  height: 0.95rem;
}

.burger i {
  position: absolute;
  left: 0;
  height: 2px;
  width: 100%;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.45s cubic-bezier(0.7, 0, 0.2, 1), top 0.45s cubic-bezier(0.7, 0, 0.2, 1),
    opacity 0.25s ease, width 0.3s ease, background-color 0.3s ease;
}

.burger i:nth-child(1) { top: 0; }
.burger i:nth-child(2) { top: calc(50% - 1px); width: 68%; }
.burger i:nth-child(3) { top: calc(100% - 2px); width: 84%; }

.mobile-menu-btn:hover .burger i { width: 100%; }

.mobile-menu-btn[aria-expanded='true'] .burger i { background: var(--cyan-bright); width: 100%; }
.mobile-menu-btn[aria-expanded='true'] .burger i:nth-child(1) { top: calc(50% - 1px); transform: rotate(45deg); }
.mobile-menu-btn[aria-expanded='true'] .burger i:nth-child(2) { opacity: 0; transform: translateX(-10px); }
.mobile-menu-btn[aria-expanded='true'] .burger i:nth-child(3) { top: calc(50% - 1px); transform: rotate(-45deg); }

@media (min-width: 1180px) {
  .mobile-menu-btn { display: none; }
}

/* the bar behind the open menu becomes see-through so logo + cross sit on the sheet */
.header-wrapper.menu-open {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom-color: transparent;
  box-shadow: none;
}

body.menu-open { overflow: hidden; }

/* ---- Mobile menu sheet ---- */
.mobile-drawer {
  --cx: calc(100% - 2.6rem);
  position: fixed;
  inset: 0;
  z-index: 55;
  display: flex;
  flex-direction: column;
  padding: calc(5.75rem + env(safe-area-inset-top)) max(1.5rem, env(safe-area-inset-right)) calc(1.5rem + env(safe-area-inset-bottom)) max(1.5rem, env(safe-area-inset-left));
  overflow-y: auto;
  overscroll-behavior: contain;
  background:
    radial-gradient(70% 45% at 100% 0%, rgba(0, 150, 255, 0.28), transparent 70%),
    radial-gradient(60% 40% at 0% 100%, rgba(0, 229, 255, 0.12), transparent 70%),
    rgba(2, 9, 20, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  visibility: hidden;
  pointer-events: none;
  clip-path: circle(0px at var(--cx) 2.6rem);
  transition: clip-path 0.6s cubic-bezier(0.7, 0, 0.2, 1), visibility 0s linear 0.6s;
}

.mobile-drawer.open {
  visibility: visible;
  pointer-events: auto;
  clip-path: circle(150vmax at var(--cx) 2.6rem);
  transition: clip-path 0.8s cubic-bezier(0.2, 0.7, 0.2, 1), visibility 0s;
}

[dir='rtl'] .mobile-drawer { --cx: 2.6rem; }

.drawer-inner {
  width: 100%;
  max-width: 34rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.drawer-list { list-style: none; }

/* items rise in one after another once the sheet is open */
.drawer-list > li,
.drawer-foot > * {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.mobile-drawer.open .drawer-list > li,
.mobile-drawer.open .drawer-foot > * {
  opacity: 1;
  transform: none;
  transition: opacity 0.55s ease, transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1);
  transition-delay: calc(0.18s + var(--i, 0) * 0.055s);
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  min-height: 3.6rem;
  padding: 0.5rem 0;
  text-align: start;
  color: #fff;
  font-size: clamp(22px, 7vw, 28px);
  font-weight: 500;
  letter-spacing: -0.015em;
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
  transition: color var(--transition-fast), padding var(--transition-base);
  -webkit-tap-highlight-color: transparent;
}

.m-num {
  width: 1.7rem;
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--cyan-accent);
}

.mobile-nav-link:hover,
.mobile-nav-link:active { padding-inline-start: 0.4rem; color: var(--cyan-bright); }

.mobile-nav-link.active { color: var(--cyan-bright); }

.m-chev {
  margin-inline-start: auto;
  width: 1.3rem;
  height: 1.3rem;
  color: rgba(255, 255, 255, 0.6);
  transition: transform var(--transition-slow), color var(--transition-base);
}

.has-sub.open > .mobile-acc-btn .m-chev { transform: rotate(180deg); color: var(--cyan-bright); }
.has-sub.open > .mobile-acc-btn { color: var(--cyan-bright); border-bottom-color: transparent; }

/* accordion: animates height without measuring it */
.drawer-sub {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.45s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.has-sub.open > .drawer-sub { grid-template-rows: 1fr; }

.drawer-sub ul {
  overflow: hidden;
  list-style: none;
  margin-inline-start: 2.7rem;
  border-inline-start: 1px solid rgba(0, 200, 255, 0.35);
}

.has-sub.open > .drawer-sub { border-bottom: 1px solid rgba(255, 255, 255, 0.09); }

.drawer-sub-link {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 2.9rem;
  padding: 0.3rem 0 0.3rem 1rem;
  text-align: start;
  font-size: 15.5px;
  color: #cbd5e1;
  transition: color var(--transition-fast), padding var(--transition-base);
  -webkit-tap-highlight-color: transparent;
}

.drawer-sub-link:hover,
.drawer-sub-link:active { color: var(--cyan-bright); padding-inline-start: 1.5rem; }

/* footer of the sheet */
.drawer-foot {
  margin-top: auto;
  padding-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.lang-chips { display: flex; gap: 0.5rem; }

.lang-chip {
  flex: 1;
  min-height: 2.9rem;
  padding: 0.5rem;
  border-radius: 12px;
  font-size: 14px;
  color: #cbd5e1;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.04);
  transition: all var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.lang-chip:hover { border-color: rgba(0, 229, 255, 0.5); color: #fff; }

.lang-chip.active {
  color: #02101f;
  font-weight: 600;
  border-color: var(--cyan-bright);
  background: linear-gradient(90deg, var(--cyan-glow-start), var(--cyan-glow-end));
}

.drawer-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: 100%;
  min-height: 3.4rem;
  border-radius: 12px;
  font-size: 15px;
}

.drawer-contact {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  font-size: 13px;
  color: #94a3b8;
}

.drawer-contact a { padding: 0.35rem 0; transition: color var(--transition-fast); }
.drawer-contact a:hover { color: var(--cyan-bright); }

@media (max-height: 520px) {
  .mobile-nav-link { min-height: 2.9rem; font-size: 20px; }
  .drawer-foot { padding-top: 1rem; }
}