.of-grid {
  --of-bg: #1c1c1c;

  display: grid;
  grid-template-columns: repeat(3, var(--of-cell, 29px));
  grid-template-rows: repeat(3, var(--of-cell, 29px));
  gap: var(--of-gap, 5px);
  padding: var(--of-pad, 6px);
  border-radius: var(--of-radius, 9px);
  width: var(--of-size, 110px);
  height: var(--of-height, 110px);
  background: var(--of-bg);
  box-sizing: border-box;
  user-select: none;
}

.of-cell {
  position: relative;
  background: #f9d100;
  border-radius: 6px;
  overflow: hidden;
}

/* ── Cover ───────────────────────────────────────────── */

.of-cover {
  position: absolute;
  background: var(--of-bg, #1c1c1c);
}

.of-cover--hidden {
  display: none;
}

.of-cover--bottom {
  top: 0;
  left: 0;
  right: 0;
  height: 80%;
}
.of-cover--left {
  top: 0;
  right: 0;
  bottom: 0;
  width: 80%;
}
.of-cover--top {
  bottom: 0;
  left: 0;
  right: 0;
  height: 80%;
}
.of-cover--right {
  top: 0;
  left: 0;
  bottom: 0;
  width: 80%;
}