body {
  font-family: 'Arial', sans-serif;
  margin: 0;
  padding: 20px;
  background-color: #f5f7fa;
  color: #333;
}

.app-container {
  max-width: 1200px;
  margin: 0 auto;
}

h1 {
  text-align: center;
  color: #4a6baf;
}

.input-section {
  background-color: white;
  padding: 15px;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  margin-bottom: 20px;
}

.input-section div {
  margin-bottom: 10px;
  display: flex;
  gap: 10px;
  align-items: center;
}

input[type="text"], select {
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  flex-grow: 1;
}

button {
  padding: 8px 16px;
  background-color: #4a6baf;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s;
}

button:hover {
  background-color: #3a5a9f;
}

.board-container {
  display: flex;
  gap: 15px;
  overflow-x: auto;
  padding-bottom: 20px;
}

.category {
  background-color: white;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  width: 250px;
  min-width: 250px;
  padding: 15px;
}

.category-header {
  font-weight: bold;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 1px solid #eee;
  color: #4a6baf;
}

.subcategory {
  margin-left: 15px;
  margin-bottom: 15px;
  border-left: 3px solid #ddd;
  padding-left: 10px;
}

.subcategory-header {
  font-size: 0.9em;
  margin-bottom: 10px;
  color: #666;
}

.task-list {
  min-height: 20px;
}

.task {
  background-color: #f8f9fa;
  padding: 10px;
  margin-bottom: 8px;
  border-radius: 4px;
  border-left: 3px solid #4a6baf;
  transition: transform 0.1s, box-shadow 0.1s;
}

.task:hover {
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transform: translateY(-1px);
}

.task.dragging {
  opacity: 0.5;
  background-color: #e9ecef;
}

.empty-message {
  color: #999;
  font-style: italic;
  font-size: 0.9em;
  text-align: center;
  padding: 10px;
}

/* Task controls */
.task-controls {
  display: none;
  float: right;
}

.task:hover .task-controls {
  display: inline-block;
}

.task-controls button {
  background: none;
  border: none;
  color: #666;
  padding: 2px 5px;
  font-size: 0.8em;
  cursor: pointer;
}

.task-controls button:hover {
  color: #4a6baf;
}

/* Category/Subcategory controls */
.category-header, .subcategory-header {
  position: relative;
  padding-right: 30px;
}

.category-controls, .subcategory-controls {
  position: absolute;
  right: 0;
  top: 0;
}

.category-controls button, .subcategory-controls button {
  background: none;
  border: none;
  color: #666;
  padding: 0 5px;
  font-size: 0.9em;
  cursor: pointer;
}

.category-controls button:hover, .subcategory-controls button:hover {
  color: #4a6baf;
}


.modal {
  display: none;
  position: fixed;
  z-index: 1;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.4);
}

.modal-content {
  background-color: #fefefe;
  margin: 15% auto;
  padding: 20px;
  border-radius: 8px;
  width: 400px;
  max-width: 90%;
}

.close-btn {
  color: #aaa;
  float: right;
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
}

.close-btn:hover {
  color: #333;
}

.modal-input {
  width: 100%;
  padding: 10px;
  margin: 15px 0;
  border: 1px solid #ddd;
  border-radius: 4px;
  box-sizing: border-box;
}

.modal-buttons {
  display: flex;
  justify-content: space-between;
}

.delete-btn {
  background-color: #dc3545 !important;
}

.delete-btn:hover {
  background-color: #c82333 !important;
}

/* Draggable items */
.category, .subcategory {
  cursor: move;
  transition: transform 0.1s, box-shadow 0.1s;
}

.category:hover, .subcategory:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transform: translateY(-1px);
}

.category.dragging, .subcategory.dragging {
  opacity: 0.5;
  background-color: #f8f9fa;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Drop indicators */
.category.drop-indicator-top {
  border-top: 2px solid #4a6baf !important;
}

.category.drop-indicator-bottom {
  border-bottom: 2px solid #4a6baf !important;
}

.category-header, .subcategory-header {
  cursor: move;
}

.category-controls button, .subcategory-controls button {
  pointer-events: auto;
  cursor: pointer;
}

.category.selected-category {
  border-left: 4px solid #4a6baf;
  padding-left: 6px;
}