/* よりみち: 半導体を学ぼう（yorimichi/redstone.html） */
.theme-redstone {
  --ym-bg: #fffaf3;
  --ym-bg-2: #fff3e6;
  --ym-line: #f1dfcf;
  --ym-accent: #d63a2f;
  --ym-accent-glow: #ff6b4a;
  --ym-accent-soft: #ffe6da;
  --ym-chip: #fbf3ea;
  --ym-shadow: rgba(120, 70, 30, 0.06);
}

/* レバー体験 */
.rs-lab {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  max-width: 880px;
  margin: 0 auto;
  background: var(--ym-panel);
  border: 1px solid var(--ym-line);
  border-radius: 16px;
  padding: 28px;
}

.rs-lab-inputs {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.rs-lever {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 18px 20px;
  border-radius: 10px;
  border: 2px solid var(--ym-line);
  background: var(--ym-chip);
  color: var(--ym-text);
  font: inherit;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.rs-lever:focus-visible {
  outline: 2px solid var(--ym-highlight);
  outline-offset: 2px;
}

.rs-lever-label {
  font-family: var(--ym-mono);
  font-size: 1.6rem;
  font-weight: 700;
}

.rs-lever-state {
  font-family: var(--ym-mono);
  font-size: 0.85rem;
  color: var(--ym-muted);
}

.rs-lever[aria-pressed="true"] {
  border-color: var(--ym-accent);
  background: var(--ym-accent-soft);
  box-shadow: 0 0 14px color-mix(in srgb, var(--ym-accent) 30%, transparent);
}

.rs-lever[aria-pressed="true"] .rs-lever-state {
  color: var(--ym-accent);
}

.rs-lab-gates {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.rs-gate {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  border-radius: 10px;
  background: var(--ym-chip);
  border: 1px solid var(--ym-line);
}

.rs-gate strong {
  display: block;
  font-family: var(--ym-mono);
  font-size: 0.95rem;
}

.rs-gate small {
  color: var(--ym-muted);
  font-size: 0.75rem;
}

.rs-lamp {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 4px;
  background: #e6d9cb;
  border: 2px solid #cdb9a5;
  transition: background 0.15s, box-shadow 0.15s;
}

.is-on > .rs-lamp {
  background: var(--ym-highlight);
  box-shadow: 0 0 18px var(--ym-highlight);
}

.rs-lab-adder {
  grid-column: 1 / -1;
  border-top: 1px dashed var(--ym-line);
  padding-top: 20px;
  text-align: center;
}

.rs-adder-title {
  color: var(--ym-muted);
  font-size: 0.9rem;
}

.rs-adder-eq {
  font-family: var(--ym-mono);
  font-size: 2rem;
  margin: 4px 0;
}

.rs-adder-eq small {
  font-family: var(--font-main);
  font-size: 0.8rem;
  color: var(--ym-muted);
}

.rs-adder-bits {
  display: inline-flex;
  gap: 4px;
}

.rs-bit {
  display: inline-block;
  min-width: 1.4em;
  border-radius: 6px;
  background: var(--ym-chip);
  border: 1px solid var(--ym-line);
}

.rs-bit.is-on {
  background: #fff1dc;
  border-color: var(--ym-highlight);
  color: var(--ym-highlight-text);
}

.rs-adder-note {
  color: var(--ym-muted);
  font-size: 0.88rem;
}

/* 真理値表 */
.rs-truth {
  margin-top: 20px;
  text-align: center;
}

.rs-truth table {
  margin: 0 auto 6px;
  border-collapse: collapse;
  font-family: var(--ym-mono);
}

.rs-truth th,
.rs-truth td {
  border: 1px solid var(--ym-line);
  padding: 6px 18px;
}

.rs-truth th {
  color: var(--ym-muted);
  font-weight: 600;
}

.rs-truth td.on {
  color: var(--ym-highlight-text);
  font-weight: 700;
}

.rs-truth td.off {
  color: #b5aca3;
}

.rs-truth small {
  color: var(--ym-muted);
  font-size: 0.78rem;
}

@media (max-width: 768px) {
  .rs-lab {
    grid-template-columns: 1fr;
    padding: 18px;
  }

  .rs-lab-inputs {
    flex-direction: row;
  }

  .rs-adder-eq {
    font-size: 1.5rem;
  }
}