.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: rgba(0, 39, 48, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: var(--border-width) solid var(--color-border);
}

.header__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.header__logo img {
  height: var(--icon-lg);
  width: auto;
  transition: filter var(--transition-base);
}

.header__logo:hover img {
  filter: drop-shadow(0 0 12px var(--color-accent)) drop-shadow(0 0 24px var(--color-accent-glow));
}

.header__nav-logo {
  display: none;
}

.header__nav-logo img {
  height: var(--icon-lg);
  width: auto;
}

.header__nav {
  display: flex;
  gap: var(--sp-xl);
}

.header__link {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.header__link:hover {
  color: var(--color-text);
}

.header__socials {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
}

.header__social {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--icon-md);
  height: var(--icon-md);
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.header__social:hover {
  opacity: 1;
}

.header__social img {
  width: var(--icon-md);
  height: var(--icon-md);
}

.header__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: var(--icon-md);
  height: var(--icon-md);
  cursor: pointer;
  z-index: 20;
}

.header__burger span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--color-accent);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* ===== Responsive ===== */
@media (max-width: 920px) {
  .header__socials {
    margin-left: auto;
  }
}

@media (max-width: 680px) {
  .header__burger {
    display: flex;
  }

  .header__logo {
    display: none;
  }

  .header__nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: var(--sp-md);
    padding: var(--sp-lg) var(--sp-xl);
    background-color: rgba(0, 26, 32, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: var(--border-width) solid var(--color-border);
    transform: translateY(-120%);
    opacity: 0;
    transition: transform var(--transition-base), opacity var(--transition-base);
  }

  .header__toggle:checked ~ .header__nav {
    transform: translateY(0);
    opacity: 1;
  }

  .header__toggle:checked ~ .header__burger span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .header__toggle:checked ~ .header__burger span:nth-child(2) {
    opacity: 0;
  }

  .header__toggle:checked ~ .header__burger span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .header__nav-logo {
    display: block;
    margin-bottom: var(--sp-sm);
  }

  .header__nav-logo img {
    height: var(--icon-lg);
  }

  .header__link {
    font-size: var(--fs-base);
  }
}