/* Robot Blocks — page-specific styles */

.rb-level-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  text-align: center;
}

.rb-teaches {
  text-align: center;
  color: var(--color-text-muted);
  max-width: 34rem;
  margin: 0.25rem auto 1rem;
}

.rb-board { display: flex; justify-content: center; margin-bottom: 1rem; }

.rb-grid {
  display: grid;
  grid-template-columns: repeat(var(--rb-cols, 6), 1fr);
  gap: 3px;
  width: min(100%, 26rem);
  padding: 5px;
  background: #cbbfae;
  border-radius: var(--radius-sm);
  border: 3px solid var(--color-orange);
}

.rb-cell {
  aspect-ratio: 1;
  border-radius: 4px;
  background: #f7f1e6;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(0.9rem, 3.6vw, 1.4rem);
  line-height: 1;
}

.rb-cell.is-wall { background: #7d6a52; }
.rb-cell.is-goal { background: #fff0b3; }

.rb-cell.is-bumped { animation: rb-bonk 0.35s ease; background: #ffd6d6; }

@keyframes rb-bonk {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

/* Program and palette */
.rb-columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1.25rem;
  margin-top: 1rem;
}

.rb-heading {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.rb-program {
  list-style: none;
  min-height: 8rem;
  padding: 0.5rem;
  background: var(--color-bg);
  border: 2px dashed #e8e2d8;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.rb-empty { color: var(--color-text-muted); font-size: 0.9rem; padding: 0.5rem; }

.rb-row { display: flex; }

.rb-block {
  display: flex;
  align-items: stretch;
  gap: 2px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 2px solid transparent;
}

.rb-block.is-open { border-color: var(--color-coral); }

.rb-block-main {
  flex: 1 1 auto;
  text-align: left;
  border: none;
  padding: 0.4rem 0.6rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  color: #23303d;
}

.rb-mini {
  border: none;
  width: 1.7rem;
  font-family: var(--font-display);
  font-weight: 700;
  cursor: pointer;
  background: rgba(0, 0, 0, 0.12);
  color: #23303d;
}

.rb-mini--bin { background: rgba(0, 0, 0, 0.2); }
.rb-mini:hover:not(:disabled) { background: rgba(0, 0, 0, 0.28); }

.rb-block--move .rb-block-main { background: #b9e4c9; }
.rb-block--turn .rb-block-main { background: #ffe1a8; }
.rb-block--loop .rb-block-main { background: #d6c7f7; }
.rb-block--test .rb-block-main { background: #a8dbe8; }

.rb-palette { display: flex; flex-direction: column; gap: 0.45rem; }

.rb-palette-btn {
  text-align: left;
  border: 2px solid rgba(0, 0, 0, 0.1);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.8rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  color: #23303d;
  transition: transform 0.12s;
}

.rb-palette-btn:hover:not(:disabled),
.rb-palette-btn:focus-visible:not(:disabled) { transform: translateY(-2px); outline: none; }
.rb-palette-btn:disabled { opacity: 0.5; cursor: default; }

.rb-palette-btn.rb-block--move { background: #b9e4c9; }
.rb-palette-btn.rb-block--turn { background: #ffe1a8; }
.rb-palette-btn.rb-block--loop { background: #d6c7f7; }
.rb-palette-btn.rb-block--test { background: #a8dbe8; }

.rb-out { margin-top: 0.5rem; width: 100%; }

@media (max-width: 640px) {
  .rb-columns { grid-template-columns: minmax(0, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  .rb-cell.is-bumped { animation: none; }
  .rb-palette-btn { transition: none; }
}