/* ============================================
   任务页面专属样式 - 任务列表、表单、卡片
   ============================================ */

/* ---- 任务页面头部 ---- */
.tasks-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  gap: var(--space-md);
  flex-wrap: wrap;
}

.tasks-filters {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* ---- 任务列表 ---- */
.task-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.task-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.task-item:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.task-item.completed {
  opacity: 0.6;
}

.task-item.completed .task-title {
  text-decoration: line-through;
}

.task-priority-indicator {
  width: 4px;
  height: 32px;
  border-radius: 2px;
  flex-shrink: 0;
}

.task-priority-indicator.high { background: var(--color-danger); }
.task-priority-indicator.medium { background: var(--color-warning); }
.task-priority-indicator.low { background: var(--color-success); }

.task-content {
  flex: 1;
  min-width: 0;
}

.task-title {
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--color-text);
  margin-bottom: 2px;
}

.task-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.task-category-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
}

.task-pomodoro-count {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
}

.task-actions {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

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

/* ---- 任务进度 ---- */
.task-progress {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.task-progress-bar {
  width: 60px;
  height: 4px;
  background: var(--color-bg-tertiary);
  border-radius: 2px;
  overflow: hidden;
}

.task-progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width var(--transition-base);
}

.task-progress-text {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  font-family: var(--font-mono);
}

/* ---- 分类管理 ---- */
.category-list {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
}

.category-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.category-chip:hover {
  opacity: 0.85;
}

.category-chip.active {
  border-color: currentColor;
}

.category-chip .chip-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

/* ---- 设置页面 ---- */
.settings-section {
  margin-bottom: var(--space-2xl);
}

.settings-section h3 {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-md);
}

.setting-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.setting-item label {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
}

.setting-item input[type="number"] {
  width: 100%;
}

/* 开关按钮 */
.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
  border-radius: 12px;
  background: var(--color-bg-tertiary);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.toggle-switch.active {
  background: var(--color-primary);
}

.toggle-switch .toggle-knob {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: white;
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.toggle-switch.active .toggle-knob {
  transform: translateX(20px);
}

/* ---- 响应式 ---- */
@media (max-width: 768px) {
  .tasks-header {
    flex-direction: column;
    align-items: stretch;
  }

  .task-actions {
    opacity: 1;
  }

  .category-chip {
    min-height: 40px;
    padding: 8px 16px;
  }

  .toggle-switch {
    width: 52px;
    height: 30px;
    border-radius: 15px;
  }

  .toggle-switch .toggle-knob {
    width: 24px;
    height: 24px;
  }

  .toggle-switch.active .toggle-knob {
    transform: translateX(22px);
  }

  .settings-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .task-item {
    padding: var(--space-sm) var(--space-md);
  }

  .task-progress-bar {
    width: 40px;
  }
}