<div class="gm-tabbar-bg">
  <nav class="gm-tabbar">
    <button class="gm-tabbar__tab gm-tabbar__tab--active">
      <span class="gm-tabbar__icon">⌂</span>Home
    </button>
    <button class="gm-tabbar__tab"><span class="gm-tabbar__icon">⌕</span>Search</button>
    <button class="gm-tabbar__tab"><span class="gm-tabbar__icon">♡</span>Saved</button>
    <button class="gm-tabbar__tab"><span class="gm-tabbar__icon">◔</span>Profile</button>
  </nav>
</div>

.gm-tabbar-bg {
  position: relative; padding: 24px;
  border-radius: 18px; overflow: hidden;
  background:
    radial-gradient(ellipse at 50% 20%, #fb923c 0%, transparent 55%),
    radial-gradient(ellipse at 30% 80%, #f43f5e 0%, transparent 55%),
    #1f0a14;
}
.gm-tabbar {
  display: flex; gap: 4px;
  background: rgba(20, 20, 30, 0.5);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  backdrop-filter: blur(24px) saturate(160%);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  padding: 6px;
}
.gm-tabbar__tab {
  flex: 1;
  background: none; border: none;
  color: rgba(255, 255, 255, 0.55);
  padding: 8px 4px;
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  font: 600 10px system-ui, sans-serif;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.gm-tabbar__icon { font-size: 18px; line-height: 1; }
.gm-tabbar__tab:hover { color: rgba(255, 255, 255, 0.85); }
.gm-tabbar__tab--active {
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
}