/* Stage 4: sketch-style dual-mode leaderboard */
.leaderboard-screen {
  display: none;
  padding: 1.25rem 1rem 3rem;
}
.leaderboard-screen.active { display: block; }
.leaderboard-wrap { max-width: 720px; margin: 0 auto; }
.leaderboard-head h2 { margin: 0.35rem 0; font-size: 1.4rem; }
.leaderboard-sub { opacity: 0.7; font-size: 0.9rem; margin: 0 0 1rem; line-height: 1.45; }
.leaderboard-back, .leaderboard-link {
  border: 1px solid color-mix(in srgb, currentColor 25%, transparent);
  background: transparent;
  color: inherit;
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  cursor: pointer;
}
.leaderboard-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
  flex-wrap: wrap;
}
.leaderboard-tab {
  border: 1px dashed color-mix(in srgb, currentColor 35%, transparent);
  background: transparent;
  color: inherit;
  border-radius: 10px;
  padding: 0.45rem 0.9rem;
  cursor: pointer;
  font: inherit;
}
.leaderboard-tab.active {
  border-style: solid;
  background: color-mix(in srgb, currentColor 8%, transparent);
  font-weight: 600;
}
.leaderboard-meta {
  font-size: 0.82rem;
  opacity: 0.75;
  margin-bottom: 0.75rem;
}
.leaderboard-meta code {
  font-size: 0.78em;
  padding: 0.05rem 0.3rem;
  border-radius: 4px;
  background: color-mix(in srgb, currentColor 8%, transparent);
}
.leaderboard-mine { margin-bottom: 0.85rem; }
.mine-card {
  border: 1px solid color-mix(in srgb, currentColor 18%, transparent);
  border-radius: 12px;
  padding: 0.75rem 0.9rem;
  font-size: 0.92rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}
.mine-card.guest { opacity: 0.9; }
.leaderboard-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.leaderboard-row {
  display: grid;
  grid-template-columns: 2.5rem 2rem minmax(0, 1fr) auto auto;
  gap: 0.55rem;
  align-items: center;
  border: 1px solid color-mix(in srgb, currentColor 16%, transparent);
  border-radius: 12px;
  padding: 0.65rem 0.8rem;
}
.lb-rank { font-weight: 700; opacity: 0.85; }
.lb-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid color-mix(in srgb, currentColor 20%, transparent);
}
.lb-nick {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 600;
}
.lb-ret { font-variant-numeric: tabular-nums; font-weight: 700; }
.lb-ret.pos { color: #e05252; }
.lb-ret.neg { color: #3db86a; }
.lb-time { font-size: 0.75rem; opacity: 0.65; white-space: nowrap; }
.leaderboard-empty { opacity: 0.7; padding: 1rem 0.25rem; }
.leaderboard-note {
  margin-top: 1rem;
  font-size: 0.8rem;
  opacity: 0.65;
  line-height: 1.45;
}
@media (max-width: 640px) {
  .leaderboard-row {
    grid-template-columns: 2.2rem 1.75rem minmax(0, 1fr) auto;
    grid-template-rows: auto auto;
  }
  .lb-time {
    grid-column: 3 / -1;
    grid-row: 2;
  }
}