/* Balanced category selector: five items above, four centered below. */
.library .tabs {
  display: grid;
  width: min(100%, 1040px);
  grid-template-columns: repeat(10, minmax(0, 1fr));
  align-items: stretch;
  gap: 8px;
  margin-inline: auto;
  padding: 8px;
  border-radius: 20px;
  background: linear-gradient(135deg, #fff, #f7faf6);
  box-shadow: 0 8px 24px #17392e0a;
}

.library .tabs button {
  display: flex;
  grid-column: span 2;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: 48px;
  padding: 10px 12px;
  border-radius: 13px;
  text-align: center;
  line-height: 1.3;
  white-space: normal;
}

.library .tabs button:nth-child(6) { grid-column-start: 2; }

@media (max-width: 920px) {
  .library .tabs { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .library .tabs button { grid-column: auto; }
}

@media (max-width: 560px) {
  .library .tabs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 7px;
    padding: 6px;
  }

  .library .tabs button { padding: 9px 8px; font-size: 13px; }
  .library .tabs button:last-child:nth-child(odd) {
    grid-column: 1 / -1;
    justify-self: center;
    width: calc((100% - 7px) / 2);
  }
}