/* ==========================================
   2. ボタン・フォーム関連スタイル
   ========================================== */
button {
  cursor: pointer;
  border: none;
  border-radius: 4px;
  padding: 6px 12px;
  font-size: 0.875rem;
  transition: background-color 0.2s, opacity 0.2s;
}

.btn-primary {
  background-color: #3182ce;
  color: white;
}
.btn-primary:hover { background-color: #2b6cb0; }

.btn-sub {
  background-color: #e2e8f0;
  color: #4a5568;
}
.btn-sub:hover { background-color: #cbd5e0; }

.btn-danger {
  background-color: #e53e3e;
  color: white;
}
.btn-danger:hover { background-color: #c53030; }

.btn-sm {
  padding: 3px 8px;
  font-size: 0.75rem;
}

.btn-block {
  width: 100%;
  padding: 12px;
}

/* フォーム要素 */
.form-group {
  margin-bottom: 10px;
}

input[type="text"],
input[type="number"],
input[type="date"],
select {
  width: 100%;
  padding: 8px;
  border: 1px solid #cbd5e0;
  border-radius: 4px;
  font-size: 0.875rem;
}