.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logoVK {
  width: 75px;
  padding: 20px;
  filter: none;
  transition: filter 0.3s ease;
}

html[data-theme='dark'] .logoVK {
  filter: brightness(0) invert(1);
}

.footer {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 32px 0;
}

.footer a {
  color: darkred;
  text-decoration: none;
}

@media (min-width: 768px) {
    .footer {
        justify-content: flex-end !important;
        padding-right: 50px !important;
        margin-top: -20px !important;
        position: fixed; bottom: 0; width: 100%;
    }
}


/* === header reveal animation ========================= */
@keyframes headerReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* start hidden & shifted up; reveal after 3 s */
.header {
  opacity: 0;
  transform: translateY(-20px);
  animation: headerReveal 0.6s ease-out forwards;
  animation-delay: 4s;
  will-change: opacity, transform;
}

/* Optional: respect “prefers‑reduced‑motion” */
@media (prefers-reduced-motion: reduce) {
  .header {
    animation: none;
    opacity: 1;
    transform: none;
  }
}