.header {
  background: var(--bg-card);
  padding: 10px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 0 15px var(--shadow-cyan);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 25px;
}

.header__logo-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  transition: 0.3s all;
}

.header__logo-wrapper:hover {
  transform: scale(1.05);
}

.header__logo-img {
  height: 40px;
  width: auto;
  filter: drop-shadow(0 0 8px var(--primary-cyan));
  transition: 0.3s all;
}

.header__logo-wrapper:hover .header__logo-img {
  filter: drop-shadow(0 0 15px var(--primary-cyan));
}

.header__brand {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--primary-cyan);
  text-shadow: 0 0 10px var(--shadow-cyan);
  letter-spacing: 1px;
}

.header__nav a {
  color: var(--primary-cyan);
  text-decoration: none;
  font-size: 1.1rem;
  transition: 0.2s all;
}

.header__nav a:hover {
  color: var(--hover-cyan);
  text-shadow: 0 0 10px var(--shadow-cyan);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 15px;
}

.header__actions span {
  text-shadow: 0 0 15px #00ffff;
}

.header__btn--login {
  padding: 10px 25px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: 0.2s all;
  background-color: transparent;
  color: var(--primary-cyan);
  border: 2px solid var(--primary-cyan);
}

.header__btn--login:hover {
  background-color: var(--primary-cyan);
  color: var(--text-black);
}

.header__btn--register {
  background-color: var(--primary-cyan);
  color: var(--text-black);
  padding: 10px 25px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: 0.2s all;
}

.header__btn--register:hover {
  background-color: transparent;
  color: var(--primary-cyan);
  border: 2px solid var(--primary-cyan);
}

@media (max-width: 768px) {
  .header {
    padding: 10px 20px;
  }

  .header__nav {
    gap: 10px;
  }

  .header__logo-img {
    height: 30px;
  }

  .header__brand {
    font-size: 0.9rem;
  }

  .header__nav a {
    font-size: 0.9rem;
  }

  .header__actions {
    gap: 8px;
  }

  .header__btn--login,
  .header__btn--register {
    padding: 6px 15px;
    font-size: 12px;
  }
}

@media (max-width: 480px) {
  .header {
    padding: 8px 10px;
  }

  .header__logo-img {
    height: 25px;
  }

  .header__brand {
    font-size: 0.75rem;
  }

  .header__nav a {
    font-size: 0.8rem;
  }

  .header__btn--login,
  .header__btn--register {
    padding: 5px 10px;
    font-size: 11px;
  }
}