.theme-picker {
  position: fixed;
  top: 14px;
  right: 18px;
  z-index: 9999;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.theme-picker-toggle {
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 50%;
  background: rgba(16,24,20,.82);
  color: #fff;
  font-size: 19px;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(0,0,0,.18);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}
.theme-picker-menu {
  position: absolute;
  top: 46px;
  right: 0;
  width: 180px;
  padding: 10px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 16px;
  background: rgba(14,21,18,.94);
  box-shadow: 0 18px 45px rgba(0,0,0,.28);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}
.theme-picker-menu strong {
  display: block;
  padding: 6px 8px 8px;
  color: #fff;
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.theme-picker-menu button {
  display: block;
  width: 100%;
  margin: 2px 0;
  padding: 9px 10px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: rgba(255,255,255,.78);
  text-align: left;
  cursor: pointer;
}
.theme-picker-menu button:hover,
.theme-picker-menu button.active {
  background: rgba(255,255,255,.10);
  color: #fff;
}