.side-nav {
  position: fixed;
  left: 26px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 18px;
  z-index: 100;
  font-family: "Segoe UI", sans-serif;
  font-size: 0.75rem;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.side-nav::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(
    to bottom,
    rgba(186, 147, 69, 0),
    rgba(186, 147, 69, 0.8),
    rgba(186, 147, 69, 0)
  );
  opacity: 0.7;
}

.side-nav-brand {
  color: #fff;
  font-weight: 500;
  margin-bottom: 8px;
  opacity: 0.9;
}

.side-nav-brand span {
  color: #ba9345;
}

.side-nav a {
  color: #bfbfbf;
  text-decoration: none;
  position: relative;
  white-space: nowrap;
  transition: color 0.2s ease, transform 0.2s ease;
}

.side-nav a::after {
  content: "";
  position: absolute;
  left: -8px;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: transparent;
  transition: background 0.2s ease, transform 0.2s ease;
}

.side-nav a:hover,
.side-nav a.active {
  color: #fff;
  transform: translateX(2px);
}

.side-nav a:hover::after,
.side-nav a.active::after {
  background: #ba9345;
}

@media (max-width: 768px) {
  .side-nav {
    top: 18px;
    left: 50%;
    transform: translateX(-50%);
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: center;
    gap: 14px;
    background: rgba(0, 0, 0, 0.35);
    padding: 8px 14px;
    border-radius: 999px;
    backdrop-filter: blur(10px);
  }

  .side-nav::before,
  .side-nav-brand {
    display: none;
  }
}