.top-menu {
  position: fixed;
  top: -100px; /* start off-screen */
  left: 50%;
  transform: translateX(-50%);
  width: 78%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 28px;
  background: rgba(92, 91, 91, 0.308); 
  backdrop-filter: blur(16px) saturate(120%); 
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  border-radius: 45px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15); 
  z-index: 99999;
  animation: slideDown 0.9s ease-out forwards;
  overflow: hidden;
}

.top-menu:hover {
  background: rgba(92, 91, 91, 0.178);
}

.top-menu::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: rgba(255, 255, 255, 0.03);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.top-menu:hover::before {
  opacity: 1; 
}

@keyframes slideDown {
  0% {
    top: -100px;
    opacity: 0;
    width: 0;
  }
  60% {
    top: 20px;
    opacity: 0.85;
    width: 65%;
  }
  100% {
    top: 20px;
    opacity: 1;
    width: 78%;
  }
}

.logo a {
  font-size: 1.8em;
  font-weight: 700;
  text-decoration: none;
  color: #fff;
  letter-spacing: 1px;
  text-shadow: 0 0 12px rgba(255, 255, 255, 0.25);
  transition: color 0.4s ease, text-shadow 0.4s ease;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo a img {
  height: 64px;
  width: auto;
  vertical-align: middle;
  filter: drop-shadow(0 0 6px rgba(255, 255, 255, 0.25));
  transition: filter 0.4s ease, transform 0.4s ease;
}

.logo a:hover {
  color: var(--logo-hover-color);
  text-shadow: 0 0 16px var(--logo-hover-color), 0 0 28px var(--logo-hover-color);
}

.logo a:hover img {
  animation: logoGlow 0.8s ease-out forwards;
  filter: drop-shadow(0 0 14px var(--logo-hover-color)) brightness(1.15);
}

@keyframes logoGlow {
  0% { transform: scale(1); filter: drop-shadow(0 0 6px var(--logo-hover-color)); }
  50% { transform: scale(1.06); filter: drop-shadow(0 0 20px var(--logo-hover-color)) brightness(1.25); }
  100% { transform: scale(1); filter: drop-shadow(0 0 12px var(--logo-hover-color)) brightness(1.1); }
}

.logo a:not(:hover) img {
  animation: fadeBack 0.6s ease-out forwards;
}

@keyframes saturnOrbit {
  0% { transform: rotate(0deg) scale(1); }
  25% { transform: rotate(2deg) scale(1.05); }
  50% { transform: rotate(0deg) scale(1.08); }
  75% { transform: rotate(-2deg) scale(1.05); }
  100% { transform: rotate(0deg) scale(1); }
}

@keyframes fadeBack {
  0% { filter: drop-shadow(0 0 16px var(--logo-hover-color)); }
  100% { filter: drop-shadow(0 0 6px rgba(255, 255, 255, 0.25)); }
}

.logo a:active img {
  animation: logoClick 0.45s cubic-bezier(0.36, 0, 0.66, 1) forwards;
}

@keyframes logoClick {
  0% { transform: scale(1); }
  40% { transform: scale(0.92) rotate(-3deg); }
  70% { transform: scale(1.08) rotate(3deg); }
  100% { transform: scale(1); }
}


:root {
  --logo-hover-color: #d56eff;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 22px;
  padding: 0;
  margin: 0;
}

.menu-button {
  text-decoration: none;
  color: white;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.08);
  padding: 10px 22px;
  border-radius: 18px;
  transition: 
    transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
    background 0.35s ease,
    box-shadow 0.35s ease,
    border-radius 0.35s ease;
  display: flex;
  align-items: center;
  gap: 6px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.08);
  cursor: pointer;
}

.menu-button::before {
  content: "";
  position: absolute;
  width: 160%;
  height: 160%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.45) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  border-radius: 50%;
  opacity: 0;
  pointer-events: none;
  z-index: 0;
  transition: none;
  filter: blur(1.5px);
}

.menu-button:hover::before {
  animation: wave-ripple 1s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes wave-ripple {
  0% { transform: translate(-50%, -50%) scale(0); opacity: 0.7; }
  50% { opacity: 0.4; }
  100% { transform: translate(-50%, -50%) scale(2); opacity: 0; }
}

.menu-button:hover {
  background: rgba(255, 255, 255, 0.22);
  transform: scale(1.07);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
  border-radius: 20px;
}

.menu-button:active {
  transform: scale(0.96) translateY(1px);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}