button {
  font-family: inherit;
  cursor: pointer;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--surface-color);
  color: var(--text-main);
  font-size: 0.85rem;
  transition: all 0.2s ease;
  white-space: nowrap;
}

button:hover {
  background-color: #f1f3f4;
}

button.primary {
  background-color: var(--primary-color);
  color: #fff;
  border-color: var(--primary-color);
  font-weight: bold;
}

button.primary:hover {
  background-color: var(--primary-hover);
}

button.danger {
  color: var(--danger-color);
  border-color: var(--border-color);
}

button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--primary-color);
  box-shadow: 0 0 0 4px var(--focus-ring);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.icon-btn {
  background: none;
  border: 1px solid #ccc;
  border-radius: 6px;
  padding: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.icon-btn:hover {
  background-color: #f0f0f0;
}

input[type="text"],
input[type="file"],
select,
textarea {
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-family: inherit;
  color: var(--text-main);
  width: 100%;
  box-sizing: border-box;
  font-size: 0.9rem;
}

input.input-error {
  border-color: var(--danger-color) !important;
  background-color: #fff8f8;
}

label {
  display: block;
  margin-bottom: 0.2rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* スイッチトグル */
.switch-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  user-select: none;
  font-size: 0.85rem;
  color: var(--text-main);
  position: relative;
}

.switch-input {
  position: absolute;
  opacity: 0;
  width: 36px;
  height: 20px;
  margin: 0;
  cursor: pointer;
  z-index: 1;
}

.switch-slider {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 20px;
  background-color: #ccc;
  border-radius: 20px;
  transition: background-color 0.2s ease;
  flex-shrink: 0;
}

.switch-slider::before {
  content: "";
  position: absolute;
  height: 16px;
  width: 16px;
  left: 2px;
  bottom: 2px;
  background-color: white;
  border-radius: 50%;
  transition: transform 0.2s ease;
}

.switch-input:checked+.switch-slider {
  background-color: var(--primary-color);
}

.switch-input:checked+.switch-slider::before {
  transform: translateX(16px);
}

.switch-input:focus-visible+.switch-slider {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px var(--focus-ring);
}