.topbar-nav { display: flex; align-items: center; gap: 1rem; }
#auth-bar { display: flex; align-items: center; gap: 0.6rem; }
#auth-bar:empty { display: none; }

.achievement-stats {
  max-width: 640px;
  margin: 0 auto 2rem;
  display: flex;
  justify-content: space-around;
  text-align: center;
  padding: 1.25rem 1rem;
}
.achievement-stat { display: flex; flex-direction: column; gap: 0.2rem; }
.achievement-stat strong { font-family: var(--font-display); font-size: 1.6rem; color: var(--accent); }
.achievement-stat span { font-size: 0.78rem; color: var(--ink-soft); }

.achievement-grid {
  max-width: 900px;
  margin: 0 auto 3rem;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.25rem;
}

.achievement-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  text-align: center;
  padding: 1.5rem 1.1rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow-sm);
}
.achievement-tile.locked { opacity: 0.55; filter: grayscale(0.4); }
.achievement-tile.unlocked { border-color: var(--gold); box-shadow: var(--shadow-md); }
.achievement-icon { font-size: 1.8rem; }
.achievement-tile h3 { margin: 0.2rem 0 0; font-size: 1rem; }
.achievement-tile p { margin: 0; }
.unlock-date {
  display: inline-block;
  margin-top: 0.4rem;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.15em 0.6em;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-dark);
}
.locked-label { font-style: italic; }