/* Modular Top-10 leaderboard widgets (RoboTwin / RoboDojo). */

.lb-stack {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  margin: var(--space-8) 0;
  scroll-margin-top: var(--space-8);
  min-width: 0;
  max-width: 100%;
}

.lb-stack > * {
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
}

.xpl-board {
  --lb-line: rgb(var(--border) / 0.7);
  --lb-ink: rgb(var(--foreground));
  --lb-soft: rgb(var(--muted-foreground));
  --lb-accent: #3078f0;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  border: 1px solid var(--lb-line);
  border-radius: var(--radius);
  background: rgb(var(--background));
  overflow: hidden;
}

.xpl-board--robotwin { --lb-accent: #3f6f58; --lb-accent-soft: rgba(101, 164, 135, 0.14); }
.xpl-board--robodojo { --lb-accent: #4285f4; --lb-accent-soft: rgba(66, 133, 244, 0.12); }

.xpl-board__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
  flex-wrap: wrap;
  padding: 0.9rem 1rem 0.75rem;
  border-bottom: 1px solid rgb(var(--border) / 0.45);
  border-top: 3px solid var(--lb-accent);
}

.xpl-board__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.xpl-board__logo {
  height: 1.85rem;
  width: auto;
  object-fit: contain;
}

.xpl-board__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--lb-accent);
}

.xpl-board__head h3 {
  margin: 0.05rem 0 0;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 600;
}

.xpl-board__meta {
  margin: 0.2rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--lb-soft);
}

.xpl-board__side {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.35rem;
}

.xpl-board__live {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--lb-soft);
}

.xpl-board__dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  background: #22c55e;
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.16);
}

.xpl-board__more,
.xpl-board__foot {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--lb-accent);
  text-decoration: none;
}

.xpl-board__more:hover,
.xpl-board__foot:hover {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.xpl-board__toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 1.1rem;
  padding: 0.6rem 1rem;
  background: rgb(var(--muted) / 0.55);
  border-bottom: 1px solid rgb(var(--border) / 0.4);
}

.xpl-board__sort {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem 0.6rem;
}

.xpl-board__sort-label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--lb-soft);
}

.xpl-board__chips {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.xpl-board__chip {
  margin: 0;
  padding: 0.2rem 0.55rem;
  border: 1px solid rgb(var(--border) / 0.8);
  border-radius: 999px;
  background: rgb(var(--background));
  color: rgb(var(--foreground) / 0.72);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  cursor: pointer;
}

.xpl-board__chip:hover {
  color: var(--lb-ink);
  border-color: var(--lb-accent);
}

.xpl-board__chip.is-active {
  background: var(--lb-accent-soft);
  border-color: transparent;
  color: var(--lb-accent);
}

.xpl-board__scroll {
  display: block;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  overscroll-behavior-x: contain;
}

.xpl-board__table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
}

.xpl-board__table--wide {
  width: max-content;
  min-width: 100%;
}

.xpl-board__table th,
.xpl-board__table td {
  padding: 0.5rem 0.7rem;
  border-bottom: 1px solid rgb(var(--border) / 0.45);
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
}

.xpl-board__table thead th {
  background: rgb(var(--muted));
  color: var(--lb-soft);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.xpl-board__table thead th.is-sorted,
.xpl-board__table thead th.is-sorted button {
  color: var(--lb-accent);
}

.xpl-board__table thead th button {
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  cursor: pointer;
}

.xpl-board__table tbody tr:last-child td {
  border-bottom: 0;
}

.xpl-board__table tbody tr:hover td {
  background: rgb(var(--foreground) / 0.025);
}

.xpl-board__rank {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--lb-soft);
  width: 3rem;
}

.xpl-board__rank.is-top {
  color: var(--lb-accent);
}

.xpl-board__method {
  text-align: left;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.xpl-board__who {
  text-align: left;
  color: var(--lb-soft);
  font-size: 0.75rem;
}

.xpl-board__score {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.xpl-board__score.is-avg { color: #3f6f58; }
.xpl-board__score.is-hard { color: #b45309; }
.xpl-board__score.is-easy { color: #0f766e; }

.xpl-board__badge {
  display: inline-block;
  padding: 0.1rem 0.4rem;
  border-radius: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.xpl-board__badge--co {
  color: #3f6f58;
  background: rgba(101, 164, 135, 0.14);
  border: 1px solid rgba(101, 164, 135, 0.28);
}

.xpl-board__badge--sft {
  color: var(--lb-soft);
  background: rgb(var(--muted));
  border: 1px solid var(--lb-line);
}

.xpl-board__metric {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
}

.xpl-board__metric.is-sorted {
  background: var(--lb-accent-soft);
}

.xpl-board__metric.is-leader {
  color: var(--lb-accent);
  font-weight: 750;
}

.xpl-board__table tr.is-leader-row td {
  background: rgba(66, 133, 244, 0.05);
}

.xpl-board__foot {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 2.4rem;
  border-top: 1px solid rgb(var(--border) / 0.45);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.xpl-board__status,
.xpl-board__empty {
  margin: 0;
  padding: 1rem;
  text-align: center;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--lb-soft);
  white-space: normal;
}

.xpl-board__status code {
  font-family: var(--font-mono);
  font-size: 0.75em;
}

.xpl-board--loading .xpl-board__status {
  min-height: 6rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 640px) {
  .lb-stack {
    margin: var(--space-6) 0;
    gap: var(--space-4);
  }

  .xpl-board__head {
    padding: 0.7rem 0.7rem 0.55rem;
    gap: 0.5rem 0.75rem;
  }

  .xpl-board__logo {
    height: 1.5rem;
  }

  .xpl-board__head h3 {
    font-size: 1.1rem;
  }

  .xpl-board__side {
    align-items: flex-start;
  }

  .xpl-board__toolbar {
    padding: 0.5rem 0.7rem;
    gap: 0.45rem 0.7rem;
  }

  .xpl-board__chip {
    padding: 0.18rem 0.45rem;
    font-size: 0.625rem;
  }

  .xpl-board__table,
  .xpl-board__table--wide {
    font-size: 0.75rem;
  }

  .xpl-board__table th,
  .xpl-board__table td {
    padding: 0.4rem 0.45rem;
  }

  .xpl-board__metric {
    font-size: 0.65rem;
  }

  .xpl-board__foot {
    min-height: 2.15rem;
    font-size: 0.625rem;
    padding: 0 0.5rem;
    text-align: center;
  }
}