/* ============================================================
   TOP ARTE 3D — Navigation
   ============================================================ */

/* ---- TOP BAR ---- */
.topbar {
  background: rgba(255, 255, 255, 255);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  padding: 8px 0;
  font-size: 0.78rem;
  color: #0D1117;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.topbar-contact {
  display: flex;
  align-items: center;
  gap: 20px;
}

.topbar-contact a {
  display: flex;
  align-items: center;
  gap: 6px;
  color: #0D1117;
  font-size: 0.78rem;
  transition: var(--transition);
}

.topbar-contact a:hover {
  color: var(--blue-main);
}

.topbar-contact a svg {
  width: 14px;
  height: 14px;
  fill: var(--blue-main);
  flex-shrink: 0;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* ---- LANGUAGE SWITCHER ---- */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 6px;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--bg-card);
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid transparent;
  background: transparent;  
   font-family: var(--font-primary), "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", sans-serif;
 
}

.lang-btn:hover,
.lang-btn.active {
  color: var(--blue-main);
  border-color: rgba(0, 174, 239, 0.3);
  background: rgba(0, 174, 239, 0.06);
}

.lang-flag {
  width: 18px;
  height: 13px;
  border-radius: 2px;
  object-fit: cover;
}

/* ---- MAIN HEADER ---- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  transition: var(--transition-slow);
}

.header-topbar {
  position: relative;
  z-index: 2;
  transition: var(--transition);
}

.navbar {
  background: transparent;
  padding: 20px 0;
  transition: var(--transition-slow);
}

.header.scrolled .navbar {
  background: rgba(11, 15, 20, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 14px 0;
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
  border-bottom: 1px solid rgba(0, 174, 239, 0.1);
}

.header.scrolled .header-topbar {
  display: none;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

/* ---- LOGO ---- */
.logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.logo img {
  height: 52px;
  width: auto;
  object-fit: contain;
}

/* ---- NAV LINKS ---- */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: center;
}

.nav-link {
  font-family: var(--font-primary);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-light);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--blue-main);
  border-radius: 1px;
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--white);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 60%;
}

/* ---- NAV CTA ---- */
.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* ---- HAMBURGER ---- */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.1);
  background: transparent;
  gap: 5px;
  transition: var(--transition);
  padding: 10px;
}

.hamburger:hover {
  border-color: var(--blue-main);
  background: rgba(0,174,239,0.06);
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
  transform-origin: center;
}

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

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

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

/* ---- MOBILE OVERLAY ---- */
.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: var(--z-overlay);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.mobile-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

/* ---- MOBILE MENU (OFFCANVAS) ---- */
.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: min(340px, 90vw);
  height: 100dvh;
  background: #0D1117;
  border-left: 1px solid rgba(0,174,239,0.15);
  z-index: var(--z-modal);
  transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.mobile-menu.open {
  right: 0;
}

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.mobile-menu-header img {
  height: 40px;
}

.mobile-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--gray-light);
  font-size: 1.2rem;
  cursor: pointer;
  transition: var(--transition);
  background: transparent;
}

.mobile-close:hover {
  border-color: var(--blue-main);
  color: var(--blue-main);
}

.mobile-nav-links {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.mobile-nav-link {
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 500;
  color: var(--gray-light);
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 12px;
  border: 1px solid transparent;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: var(--blue-main);
  background: rgba(0,174,239,0.06);
  border-color: rgba(0,174,239,0.15);
  padding-left: 22px;
}

.mobile-nav-link svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  flex-shrink: 0;
}

.mobile-menu-footer {
  padding: 20px 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mobile-lang-switcher {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.mobile-socials {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 4px;
}

.mobile-socials a {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 50%;
  color: var(--gray-mid);
  transition: var(--transition);
  font-size: 0.9rem;
}

.mobile-socials a:hover {
  border-color: var(--blue-main);
  color: var(--blue-main);
  background: rgba(0,174,239,0.08);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1023px) {
  .nav-menu,
  .nav-cta .btn-primary {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .topbar-contact .topbar-phone {
    display: none;
  }
}

@media (max-width: 767px) {
  .topbar {
    display: none;
  }

  .navbar {
    padding: 16px 0;
  }

  .header.scrolled .navbar {
    padding: 12px 0;
  }
}