/* ==================== ボタンスタイル ==================== */

/* CSVダウンロードボタン */
.csv-download-btn {
  border: 2px solid var(--color-csv-button);
  background-color: var(--color-white);
  color: var(--color-csv-button);
  cursor: pointer;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-speed-fast) var(--transition-easing);
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  padding: var(--spacing-1) var(--spacing-2);
}

.csv-download-btn:hover {
  background-color: var(--color-csv-button-hover);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.csv-download-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.csv-download-btn:disabled:hover {
  background-color: var(--color-white);
  color: var(--color-csv-button);
  transform: none;
  box-shadow: none;
}

.csv-download-btn img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

/* BCPレポートボタン（紫グラデーション） */
.bcp-report-btn,
.back-to-dashboard-btn {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 8px 16px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  transition: all 0.3s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  border: none;
  cursor: pointer;
}

.bcp-report-btn {
  padding: 4px;
  font-size: 18px;
  width: 28px;
  height: 28px;
}

.bcp-report-btn:hover,
.back-to-dashboard-btn:hover {
  transform: translateY(-50%) translateY(-2px);
  box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

/* ボタングループ */
.button-group {
  display: flex;
  gap: var(--spacing-2);
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

.button-group form {
  margin: 0;
}

/* ボタンセクション（戻るボタンなど） */
.button-section {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 30px;
}

/* CSVダウンロード用ボタンセクション */
.button-section.csv-download {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.button-section form button {
  background: var(--color-button);
  color: var(--color-white);
  padding: var(--spacing-3) var(--spacing-5);
  border-radius: var(--border-radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-speed-fast) var(--transition-easing);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
}

.button-section form button:hover {
  background: var(--color-button-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.button-section form button:active {
  transform: translateY(0);
}

/* フォームボタン（汎用） */
form button {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-3) var(--spacing-4);
  border-radius: var(--border-radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-speed-fast) var(--transition-easing);
  font-weight: var(--font-weight-medium);
}

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

form button:active {
  background: var(--color-primary-dark);
}

form button:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
}

/* 表示ボタン（グラフ・分析ページ共通） */
.controls button[type="submit"],
.controls button:not([type]),
.controls button,
#displayButton {
  margin: 0 10px;
  padding: 8px 20px;
  background-color: var(--color-button);
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  transition: all var(--transition-speed-fast) var(--transition-easing);
}

.controls button[type="submit"]:hover:not(:disabled),
.controls button:not([type]):hover:not(:disabled),
.controls button:hover:not(:disabled),
#displayButton:hover:not(:disabled) {
  background-color: var(--color-button-hover);
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(232, 126, 42, 0.3);
}

.controls button[type="submit"]:active:not(:disabled),
.controls button:not([type]):active:not(:disabled),
.controls button:active:not(:disabled),
#displayButton:active:not(:disabled) {
  background-color: var(--color-button-hover);
  transform: translateY(0);
}

.controls button[type="submit"]:disabled,
.controls button:not([type]):disabled,
.controls button:disabled,
#displayButton:disabled {
  background-color: var(--color-gray-400);
  cursor: not-allowed;
  opacity: 0.6;
  transform: none;
  box-shadow: none;
}

/* タッチデバイス専用のホバー防止 */
@media (hover: none) {
  button:hover {
    transform: none;
  }

  button:active {
    transform: scale(0.95);
    transition: all 0.1s ease;
  }
}