.portfolio-version-switch {
  position: fixed;
  z-index: 10000;
  top: max(18px, env(safe-area-inset-top));
  right: max(18px, env(safe-area-inset-right));
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: 4px;
  padding: 5px;
  border: 1px solid rgba(15, 23, 42, 0.13);
  border-radius: 999px;
  background: rgba(248, 250, 252, 0.82);
  box-shadow: 0 12px 34px rgba(15, 23, 42, 0.13);
  -webkit-backdrop-filter: blur(18px) saturate(145%);
  backdrop-filter: blur(18px) saturate(145%);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
}

.portfolio-version-switch a {
  display: inline-flex;
  min-width: 76px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: #64748b;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-decoration: none;
  transition: color 180ms ease, background-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.portfolio-version-switch a:hover {
  color: #0f172a;
}

.portfolio-version-switch a:active {
  transform: scale(0.97);
}

.portfolio-version-switch a[aria-current="page"] {
  color: #f8fafc;
  background: #111827;
  box-shadow: 0 5px 14px rgba(15, 23, 42, 0.22);
}

.portfolio-version-switch a:focus-visible {
  outline: 3px solid #ff6b2c;
  outline-offset: 2px;
}

body[data-portfolio-view="geek"] .portfolio-version-switch {
  top: 84px;
  border-color: rgba(148, 163, 184, 0.24);
  background: rgba(8, 12, 20, 0.84);
  box-shadow: 0 12px 38px rgba(0, 0, 0, 0.34);
}

body[data-portfolio-view="geek"] .portfolio-version-switch a {
  color: #94a3b8;
}

body[data-portfolio-view="geek"] .portfolio-version-switch a:hover {
  color: #f8fafc;
}

body[data-portfolio-view="geek"] .portfolio-version-switch a[aria-current="page"] {
  color: #07111f;
  background: #a7f3d0;
  box-shadow: 0 0 0 1px rgba(167, 243, 208, 0.25), 0 5px 18px rgba(16, 185, 129, 0.22);
}

@media (max-width: 720px) {
  .portfolio-version-switch {
    top: max(10px, env(safe-area-inset-top));
    right: max(10px, env(safe-area-inset-right));
    padding: 4px;
  }

  .portfolio-version-switch a {
    min-width: 68px;
    font-size: 12px;
  }

  body[data-portfolio-view="geek"] .portfolio-version-switch {
    top: 76px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .portfolio-version-switch a {
    transition: none;
  }
}