#reaction-panel {
  max-width: 460px;
  margin: 1.5rem auto 0;
  text-align: center;
}

.reaction-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 1.2rem;
}
.reaction-controls select,
.reaction-controls button {
  font-family: inherit;
  font-size: 1rem;
  padding: 0.45rem 0.9rem;
  border-radius: 6px;
  border: 1px solid var(--color-btn-border);
  background: var(--color-btn-bg);
  color: var(--color-text);
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.reaction-controls button:hover {
  border-color: var(--color-accent);
}

#reaction-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 180px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  user-select: none;
  transition: background-color 0.1s ease;
}
#reaction-box.ready {
  background: #c0392b;
  border-color: #c0392b;
  color: #fff;
}
#reaction-box.go {
  background: #27ae60;
  border-color: #27ae60;
  color: #fff;
}

#status {
  font-size: 1.25rem;
  min-height: 1.6rem;
}

#result {
  font-size: 2.25rem;
  font-weight: 700;
  margin-top: 0.4rem;
}

#gp-status {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  min-height: 1.4rem;
}

#history {
  margin-top: 1rem;
  font-size: 0.9rem;
  max-height: 160px;
  overflow-y: auto;
  color: var(--color-text-muted);
}
#history div {
  padding: 0.15rem 0;
  border-bottom: 1px solid var(--color-border);
}