.leaderboard-page {
  padding: 2rem 1rem 3rem;
  background: #f8fafc;
}

.leaderboard-shell {
  max-width: 1200px;
  margin: 0 auto;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 1rem;
}

.leaderboard-header h1 {
  margin: 0 0 0.35rem;
  font-size: 1.75rem;
}

.leaderboard-header p {
  margin: 0;
  color: #64748b;
}

.leaderboard-summary {
  margin-top: 0.9rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

.summary-item {
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 0.7rem 0.8rem;
  background: #f8fafc;
}

.summary-item strong {
  display: block;
  font-size: 0.8rem;
  color: #475569;
  margin-bottom: 0.2rem;
}

.summary-item span {
  font-size: 1.3rem;
  font-weight: 700;
  color: #0f172a;
}

.leaderboard-filters {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.55rem;
  align-items: end;
}

.leaderboard-filters label {
  font-size: 0.8rem;
  color: #475569;
  font-weight: 600;
}

.leaderboard-filters select {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  padding: 0.5rem 0.6rem;
  font-size: 0.9rem;
}

.btn {
  border: 1px solid #0ea5e9;
  background: #0ea5e9;
  color: #fff;
  border-radius: 8px;
  padding: 0.5rem 0.7rem;
  text-decoration: none;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  font-weight: 600;
}

.btn.btn-secondary {
  background: #fff;
  color: #0f172a;
  border-color: #cbd5e1;
}

.leaderboard-results-meta {
  margin-top: 0.7rem;
  color: #475569;
}

.leaderboard-table-wrap {
  margin-top: 1rem;
  overflow-x: auto;
}

.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
}

.leaderboard-table th,
.leaderboard-table td {
  border-bottom: 1px solid #e2e8f0;
  text-align: left;
  padding: 0.6rem;
  font-size: 0.88rem;
  vertical-align: top;
}

.leaderboard-table th {
  color: #334155;
  background: #f8fafc;
}

.empty-state {
  margin-top: 1rem;
  border: 1px dashed #cbd5e1;
  border-radius: 10px;
  padding: 1rem;
  text-align: center;
}

@media (max-width: 900px) {
  .leaderboard-filters {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .leaderboard-page {
    padding: 1rem 0.6rem 2rem;
  }

  .leaderboard-shell {
    border-radius: 10px;
    padding: 0.75rem;
  }

  .leaderboard-header h1 {
    font-size: 1.35rem;
  }

  .leaderboard-summary {
    grid-template-columns: 1fr;
  }

  .leaderboard-filters {
    grid-template-columns: 1fr;
  }
}