.leaderboard-shell {
  position: fixed;
  right: 18px;
  top: 18px;
  z-index: 40;
  width: min(340px, calc(100vw - 36px));
  padding: 14px;
  border: 1px solid rgba(130, 160, 255, 0.32);
  border-radius: 8px;
  background: rgba(5, 8, 20, 0.86);
  color: #fff;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(12px);
  font-family: Arial, Helvetica, sans-serif;
}

.leaderboard-shell.is-collapsed {
  width: auto;
  padding: 0;
  border-color: rgba(130, 160, 255, 0.46);
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
}

.leaderboard-panel {
  max-height: calc(100vh - 64px);
  overflow: auto;
}

.leaderboard-shell.is-collapsed .leaderboard-panel {
  display: none;
}

.leaderboard-open {
  display: none;
}

.leaderboard-shell.is-collapsed .leaderboard-open {
  display: block;
  margin: 0;
  padding: 9px 12px;
  border: 1px solid rgba(130, 160, 255, 0.5);
  border-radius: 6px;
  background: rgba(5, 8, 20, 0.88);
  color: #fff;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.leaderboard-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.leaderboard-shell h2 {
  margin: 0;
  font-size: 18px;
  letter-spacing: 0;
}

.leaderboard-heading button {
  margin: 0;
  border: 0;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
  padding: 7px 9px;
}

.leaderboard-user {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
  color: #aab5d8;
  font-size: 13px;
}

.leaderboard-user strong {
  color: #70f0ff;
}

.leaderboard-user button,
.leaderboard-submit button,
.leaderboard-auth-card button {
  margin: 0;
  border: 0;
  border-radius: 6px;
  background: #3478ff;
  color: #fff;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  padding: 8px 11px;
}

.leaderboard-user button {
  background: rgba(255, 255, 255, 0.12);
}

.leaderboard-table {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.leaderboard-row {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.045);
  font-size: 13px;
}

.leaderboard-row strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.leaderboard-rank,
.leaderboard-meta {
  color: #aab5d8;
}

.leaderboard-meta {
  font-size: 11px;
  text-align: right;
}

.leaderboard-empty,
.leaderboard-status {
  min-height: 18px;
  margin: 9px 0 0;
  color: #aab5d8;
  font-size: 12px;
}

.leaderboard-submit {
  margin-top: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.leaderboard-auth {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(3, 5, 13, 0.86);
  color: #fff;
  font-family: Arial, Helvetica, sans-serif;
}

.leaderboard-auth[hidden] {
  display: none;
}

.leaderboard-auth-card {
  width: min(760px, 100%);
  padding: 22px;
  border: 1px solid rgba(130, 160, 255, 0.34);
  border-radius: 8px;
  background: rgba(8, 12, 28, 0.96);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.5);
}

.leaderboard-auth-card h1 {
  margin: 0 0 8px;
  font-size: 32px;
  letter-spacing: 0;
}

.leaderboard-auth-card p {
  margin: 0 0 16px;
  color: #aab5d8;
  line-height: 1.45;
}

.leaderboard-auth-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.leaderboard-auth-form {
  display: grid;
  gap: 9px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.045);
}

.leaderboard-auth-form h2 {
  margin: 0 0 4px;
  font-size: 18px;
}

.leaderboard-auth-form input {
  width: 100%;
  min-height: 42px;
  border: 1px solid rgba(170, 181, 216, 0.28);
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.24);
  color: #fff;
  font: inherit;
  padding: 10px 11px;
}

.leaderboard-auth-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.leaderboard-auth-actions button {
  min-height: 42px;
}

.leaderboard-auth-actions .secondary {
  background: rgba(255, 255, 255, 0.12);
}

@media (max-width: 760px) {
  .leaderboard-shell {
    left: 10px;
    right: 10px;
    top: 10px;
    width: auto;
    max-height: 38vh;
  }

  .leaderboard-shell.is-collapsed {
    left: auto;
  }

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