/* hanoi: rules used only by the hanoi pages (loaded after base.css). */
/* ---- Tower of Hanoi ----
   Three rods side by side, each a tall button: a thin pole, the discs as
   black bars of different widths with their number in white, the name of
   the rod underneath (the goal rod with a star). A picked-up rod has a
   thick frame and its top disc turns white with a thick outline; the hint
   gives the two rods of its move a double frame. Nothing animated. */
.hanoi-rods {
  display: flex;
  justify-content: center;
  direction: ltr;
  max-width: 520px;
  margin: 0 auto;
}

.hanoi-rod {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  flex: 1 1 0;
  min-width: 0;
  min-height: 260px;
  margin: 0 3px;
  padding: 6px 2px 4px;
  border: 2px solid #141413;
  border-radius: var(--radius);
  background: #fff;
  color: #141413;
  cursor: pointer;
}

.hanoi-rod-picked {
  border-width: 5px;
  padding: 3px 0 1px;
}

.hanoi-rod-hint {
  border: 6px double #141413;
  padding: 2px 0 0;
}

.hanoi-pole {
  position: absolute;
  left: 50%;
  top: 14px;
  bottom: 30px;
  width: 4px;
  margin-left: -2px;
  background: #141413;
}

.hanoi-stack {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hanoi-disc {
  display: block;
  box-sizing: border-box;
  height: 26px;
  margin: 1px 0;
  border: 2px solid #141413;
  border-radius: 6px;
  background: #141413;
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 22px;
  text-align: center;
}

.hanoi-disc-lifted {
  background: #fff;
  color: #141413;
  border-width: 4px;
  line-height: 18px;
}

.hanoi-rod-name {
  display: block;
  margin-top: 4px;
  font-size: 0.9rem;
  font-weight: 700;
  text-align: center;
}