/* Tier-Gating: Sidebar-Items + Cards */
.nav-item.tier-locked {
  opacity: 0.45;
  cursor: not-allowed;
  position: relative;
}
.nav-item.tier-locked::after {
  content: "\01F512";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 11px;
  filter: grayscale(1);
}
.nav-item.tier-locked:hover {
  opacity: 0.7;
}
.nav-item.tier-locked .tier-tooltip {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  left: calc(100% + 8px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--bg-2, #1a1424);
  color: var(--fg, #fff);
  padding: 6px 10px;
  border-radius: 6px;
  white-space: nowrap;
  font-size: 12px;
  z-index: 100;
  pointer-events: none;
  transition: opacity .15s;
  border: 1px solid var(--border, rgba(167,139,250,.3));
}
.nav-item.tier-locked:hover .tier-tooltip {
  visibility: visible;
  opacity: 1;
}

/* Card-Lock-Preview */
.tier-card-locked {
  position: relative;
  opacity: 0.5;
  pointer-events: none;
}
.tier-card-locked::after {
  content: "\01F512  " attr(data-min-tier-label);
  position: absolute;
  top: 8px;
  right: 12px;
  background: var(--bg-2, #1a1424);
  color: var(--accent, #a78bfa);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  pointer-events: auto;
  border: 1px solid rgba(167,139,250,.3);
}