/* ========== タスクカード ========== */
.task-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  cursor: pointer;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
  position: relative;
  border-left: var(--card-border-accent) solid #BDBDBD;
}

.task-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.task-card.sortable-drag {
  opacity: 0.5;
}

.task-card.sortable-ghost {
  opacity: 0.3;
  box-shadow: var(--shadow-lg);
  transform: rotate(1.5deg);
}

/* カード内 今日タスク画面のアイテム */
.today-task-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-fast);
  position: relative;
}

.today-task-item:last-child {
  border-bottom: none;
}

.today-task-item:hover {
  background-color: rgba(156,106,222,0.03);
}

/* ========== チェックボックス（完了ボタン） ========== */
.task-check-btn {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-top: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.task-check-btn:hover {
  border-color: var(--color-success);
  background-color: rgba(67,160,71,0.1);
  transform: scale(1.1);
}

.task-check-btn.checking {
  border-color: var(--color-success);
  background-color: var(--color-success);
  animation: checkBounce 0.45s cubic-bezier(0.175, 0.885, 0.32, 1.4) forwards;
}

.task-check-btn.checked {
  border-color: var(--color-success);
  background-color: var(--color-success);
  color: #fff;
}

.task-check-btn.checked::after {
  content: '';
  display: block;
  width: 10px;
  height: 6px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg) translateY(-1px);
  animation: checkmarkDraw 0.2s ease forwards;
}

@keyframes checkBounce {
  0%   { transform: scale(1); }
  35%  { transform: scale(1.4); }
  60%  { transform: scale(0.88); }
  80%  { transform: scale(1.12); }
  100% { transform: scale(1); }
}

@keyframes checkmarkDraw {
  from { opacity: 0; transform: rotate(-45deg) translateY(-1px) scale(0.5); }
  to   { opacity: 1; transform: rotate(-45deg) translateY(-1px) scale(1); }
}

/* ========== カード本文エリア ========== */
.task-card-body {
  flex: 1;
  min-width: 0;
}

.task-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  line-height: var(--line-height-tight);
  word-break: break-word;
}

.task-title.done {
  text-decoration: line-through;
  color: var(--color-text-muted);
}

.task-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
  margin-top: 4px;
}

/* ========== カテゴリータグ ========== */
.category-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: #fff;
  text-shadow: 0 1px 1px rgba(0,0,0,0.4);
  white-space: nowrap;
}

/* ========== 期限表示 ========== */
.deadline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.deadline--overdue {
  color: var(--color-danger);
  font-weight: var(--font-weight-medium);
}

.deadline--today {
  color: var(--color-warning);
  font-weight: var(--font-weight-medium);
}

.deadline--soon {
  color: #FF8C00;
}

.deadline--normal {
  color: var(--color-text-muted);
}

/* ========== 優先度バッジ ========== */
.priority-icon {
  font-size: 13px;
  line-height: 1;
}

/* ========== 進捗メモ ========== */
.task-progress-preview {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 360px;
}

/* ========== アクションボタン群 ========== */
.task-card-actions {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-left: auto;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.today-task-item:hover .task-card-actions,
.task-card:hover .task-card-actions {
  opacity: 1;
}

.task-action-btn {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.task-action-btn:hover {
  background-color: var(--color-border);
  color: var(--color-text-primary);
}

.task-action-btn--danger:hover {
  background-color: rgba(229,57,53,0.12);
  color: var(--color-danger);
}

/* ========== 選択可能タスク（今日選択モーダル内） ========== */
.selectable-task-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
  cursor: pointer;
}

.selectable-task-item:hover {
  background-color: rgba(156,106,222,0.05);
}

.selectable-task-item.selected {
  background-color: rgba(156,106,222,0.1);
  border-color: #9C6ADE;
}

.selectable-task-checkbox {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--color-border);
  cursor: pointer;
  margin-top: 2px;
  appearance: none;
  transition: all var(--transition-fast);
}

.selectable-task-checkbox:checked {
  background-color: #9C6ADE;
  border-color: #9C6ADE;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 8l4 4 6-7' stroke='%23fff' stroke-width='2' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-size: 12px;
  background-repeat: no-repeat;
  background-position: center;
}

/* ========== 完了アニメーション ========== */
@keyframes completeTask {
  0%   { transform: scale(1) translateX(0); opacity: 1; }
  15%  { transform: scale(1.02) translateX(0); }
  100% { transform: scale(0.96) translateX(40px); opacity: 0; }
}

@keyframes completeTaskFadeUp {
  0%   { opacity: 1; transform: translateY(0); max-height: 120px; }
  40%  { opacity: 0.3; transform: translateY(-6px); }
  100% { opacity: 0; transform: translateY(-12px); max-height: 0; padding: 0; margin: 0; }
}

.task-completing {
  animation: completeTask 0.45s cubic-bezier(0.4, 0, 0.6, 1) forwards;
  pointer-events: none;
  overflow: hidden;
}

/* ========== 優先度グループヘッダー（優先度ビュー） ========== */
.priority-group {
  margin-bottom: var(--space-md);
}

.priority-group-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.priority-group-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

/* ========== 空状態 ========== */
.empty-column {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg) var(--space-base);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  min-height: 80px;
}

/* ========== 完了・今日やる状態のスタイル ========== */
.task-card--done {
  opacity: 0.6;
}
.task-card--done .task-title {
  text-decoration: line-through;
  color: var(--color-text-muted);
}

.task-row--done {
  opacity: 0.6;
  background-color: rgba(0,0,0,0.02);
}
.task-row--done td {
  color: var(--color-text-muted);
}
.task-row--done td:nth-child(2) {
  text-decoration: line-through;
}

.btn-toggle-today.active {
  color: #F4820A;
  background-color: rgba(244, 130, 10, 0.1);
}

/* ========== モバイルレスポンシブ（767px以下） ========== */
@media (max-width: 767px) {
  .task-card {
    padding: var(--space-md) var(--space-base);
  }

  .task-check-btn {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
  }
}