header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(16, 18, 24, 0.84);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: var(--transition);
}

.navbar {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  transition: var(--transition);
  gap: 20px;
}

.navbar.scrolled {
  background-color: rgba(16, 18, 24, 0.96);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
}

.logo {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: fit-content;
}

.logo-mark {
  width: 62px;
  height: 62px;
  padding: 6px;
  border-radius: 12px;
  background: #080b10;
  border: 1px solid rgba(51, 214, 197, 0.45);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.32);
}

.logo-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.logo h1 {
  color: var(--white);
  font-size: 34px;
  font-weight: 800;
  letter-spacing: 0.3px;
  white-space: nowrap;
}

.logo-text p {
  margin-top: 4px;
  color: #b8c4d5;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 2.4px;
  text-transform: uppercase;
  white-space: nowrap;
}

.nav-links ul {
  display: flex;
  align-items: center;
}

.nav-links ul li {
  margin: 0 14px;
}

.nav-links ul li a {
  color: var(--white);
  font-weight: 600;
  font-size: 16px;
  position: relative;
  transition: var(--transition);
}

.language-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background-color: rgba(255, 255, 255, 0.05);
}

.lang-btn {
  border: none;
  border-radius: 999px;
  padding: 6px 10px;
  background: transparent;
  color: #dce4f1;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: var(--transition);
}

.lang-btn:hover {
  color: var(--white);
}

.lang-btn.is-active {
  background-color: var(--primary-color);
  color: var(--white);
}

.lang-btn:focus-visible {
  outline: 2px solid var(--brand-cyan);
  outline-offset: 2px;
}

.nav-links ul li a:hover,
.nav-links ul li a.active {
  color: var(--primary-color);
}

.nav-links ul li a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: var(--transition);
}

.nav-links ul li a:hover::after,
.nav-links ul li a.active::after {
  width: 100%;
}

.fa-bars {
  color: var(--white);
  font-size: 24px;
  cursor: pointer;
  display: none;
}

#openMenu {
  opacity: 0;
}

@media (max-width: 768px) {
  .navbar {
    padding: 12px 16px;
  }

  .logo-mark {
    width: 50px;
    height: 50px;
  }

  .logo h1 {
    font-size: 24px;
  }

  .logo-text p {
    display: none;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -280px;
    width: 280px;
    height: 100vh;
    background-color: rgba(20, 24, 31, 0.98);
    padding: 90px 0 20px;
    z-index: 1001;
    transition: var(--transition);
  }

  .nav-links.active {
    right: 0;
  }

  .nav-links ul {
    flex-direction: column;
    align-items: center;
  }

  .nav-links ul li {
    margin: 15px 0;
  }

  .nav-links ul li a {
    font-size: 18px;
  }

  .language-switch {
    margin-left: auto;
  }

  .lang-btn {
    padding: 6px 9px;
  }

  .fa-bars {
    display: block;
  }

  #openMenu {
    opacity: 1;
  }
}