* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-card: #0f3460;
  --bg-card-hover: #1a4a7a;
  --text-primary: #eee;
  --text-secondary: #aaa;
  --accent: #e94560;
  --accent-hover: #ff6b6b;
  --success: #4ade80;
  --warning: #fbbf24;
  --border-radius: 12px;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  min-height: 100vh;
  color: var(--text-primary);
}

header {
  padding: 1.5rem 2rem;
  background: rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

header h1 {
  font-size: 1.75rem;
  font-weight: 600;
}

.sync-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.sync-info {
  opacity: 0.6;
  font-size: 0.75rem;
}

.sync-timer {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.6rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 20px;
  font-size: 0.75rem;
}

.sync-dot {
  width: 6px;
  height: 6px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.sync-controls select {
  padding: 0.35rem 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  background-color: #1a1a2e;
  color: var(--text-primary);
  font-size: 0.75rem;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'%3E%3Cpath fill='%23aaa' d='M0 2l4 4 4-4z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.4rem center;
  padding-right: 1.2rem;
}

.sync-controls select option {
  background-color: #1a1a2e;
  color: var(--text-primary);
}

.sync-controls select:focus {
  outline: none;
  border-color: var(--accent);
}

.sync-btn {
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sync-btn:hover {
  background: var(--accent);
  transform: rotate(180deg);
}

.hint {
  font-size: 0.8rem;
  color: var(--text-secondary);
  opacity: 0.7;
}

.board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding: 2rem;
  max-width: 1600px;
  margin: 0 auto;
  min-height: calc(100vh - 80px);
  transition: all 0.3s ease;
}

/* Extra columns - hidden by default using display:none */
.extra-column {
  display: none !important;
}

/* When Future Plans is visible */
.board.show-future-plans {
  grid-template-columns: repeat(4, 1fr);
  max-width: 1900px;
}

.board.show-future-plans .extra-column[data-column="future-plans"] {
  display: flex !important;
}

/* When Archives is visible */
.board.show-archives {
  grid-template-columns: repeat(4, 1fr);
  max-width: 1900px;
}

.board.show-archives .extra-column[data-column="archives"] {
  display: flex !important;
}

/* When BOTH are visible */
.board.show-future-plans.show-archives {
  grid-template-columns: repeat(5, 1fr);
  max-width: 2200px;
}

.column {
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.column-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem;
  margin-bottom: 1rem;
  border-bottom: 2px solid rgba(255, 255, 255, 0.1);
}

.column-header h2 {
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Task count badge */
.task-count {
  background: rgba(255, 255, 255, 0.15);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.15rem 0.5rem;
  border-radius: 10px;
  min-width: 1.5rem;
  text-align: center;
}

.column[data-column="planned"] .column-header {
  border-bottom-color: var(--warning);
}

.column[data-column="in-progress"] .column-header {
  border-bottom-color: var(--accent);
}

.column[data-column="completed"] .column-header {
  border-bottom-color: var(--success);
}

.column[data-column="future-plans"] .column-header {
  border-bottom-color: #9b59b6; /* Purple for future */
}

.column[data-column="archives"] .column-header {
  border-bottom-color: #7f8c8d; /* Gray for archives */
}

.add-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: var(--accent);
  color: white;
  font-size: 1.25rem;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.add-btn:hover {
  background: var(--accent-hover);
  transform: scale(1.1);
}

.tasks {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 200px;
  padding: 0.5rem;
  border-radius: 8px;
  transition: background 0.2s;
}

.tasks.drag-over {
  background: rgba(233, 69, 96, 0.15);
}

/* Drop indicator for reordering */
.drop-indicator {
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  margin: 0.5rem 0;
  animation: pulse 0.8s ease-in-out infinite;
  pointer-events: none;
  flex-shrink: 0;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.task {
  background: var(--bg-card);
  border-radius: 8px;
  padding: 1rem;
  padding-bottom: 1.2rem; /* Extra space for bottom buttons */
  cursor: grab;
  transition: all 0.2s;
  border: 1px solid transparent;
  position: relative;
  min-height: 4rem; /* Minimum height to prevent button overlap */
}

.task:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.task.dragging {
  opacity: 0.5;
  cursor: grabbing;
}

.task-title {
  font-weight: 500;
  margin-bottom: 0.25rem;
  margin-top: 0.25rem;
  word-break: break-word;
}

.task-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  word-break: break-word;
}

/* Follow-up section with subtle background */
.task-followup {
  font-size: 0.8rem;
  color: var(--text-secondary);
  word-break: break-word;
  margin-top: 0.75rem;
  padding: 0.5rem 0.6rem;
  background: rgba(74, 222, 128, 0.1);
  border-left: 3px solid var(--success);
  border-radius: 0 6px 6px 0;
}

.task-followup .followup-label {
  font-weight: 600;
  color: var(--success);
  margin-right: 0.25rem;
}

.task-actions {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  display: flex;
  gap: 0.25rem;
  opacity: 0;
  transition: opacity 0.2s;
}

.task:hover .task-actions,
.task:hover .task-move-actions {
  opacity: 1;
}

.task-actions button,
.task-move-actions button {
  width: 24px;
  height: 24px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.7rem;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Move buttons container - bottom right */
.task-move-actions {
  position: absolute;
  bottom: 0.5rem;
  right: 0.5rem;
  display: flex;
  gap: 0.25rem;
  opacity: 0;
  transition: opacity 0.2s;
}

.move-btn {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
  font-size: 0.6rem;
}

.move-btn:hover {
  background: var(--success);
  color: #000;
}

/* Collapse button - positioned top-left */
.collapse-btn {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  width: 24px;
  height: 24px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
  opacity: 0;
  transition: all 0.2s;
}

.task:hover .collapse-btn {
  opacity: 1;
}

.collapse-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  color: var(--text-primary);
}

/* Task content wrapper for collapse */
.task-content {
  transition: all 0.2s ease;
}

/* Collapsed task state */
.task.collapsed .task-content {
  display: none;
}

.task.collapsed {
  padding-bottom: 1.2rem; /* Keep bottom padding for buttons even when collapsed */
}

.edit-btn {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.edit-btn:hover {
  background: var(--accent);
}

.delete-btn {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.delete-btn:hover {
  background: #dc2626;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
  width: 90%;
  max-width: 450px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-header h3 {
  font-size: 1.25rem;
}

.close-btn {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  font-size: 1.25rem;
  cursor: pointer;
  transition: all 0.2s;
}

.close-btn:hover {
  background: var(--accent);
}

#taskForm {
  padding: 1.25rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.2);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.form-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  margin-top: 1.5rem;
}

.btn-primary,
.btn-secondary {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Responsive */
@media (max-width: 900px) {
  .board {
    grid-template-columns: 1fr;
    padding: 1rem;
  }

  .column {
    min-height: auto;
  }

  .tasks {
    min-height: 100px;
  }
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Toast notifications */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-card);
  color: var(--text-primary);
  padding: 0.875rem 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--accent);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  z-index: 2000;
  opacity: 0;
  transition: all 0.3s ease;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Paste Dialog */
.paste-dialog {
  display: flex;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 1500;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s;
}

.paste-dialog.active {
  opacity: 1;
}

.paste-dialog-content {
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  width: 90%;
  max-width: 400px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  text-align: center;
}

.paste-dialog-content h3 {
  margin-bottom: 1rem;
}

.paste-preview {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 8px;
  padding: 0.75rem;
  margin-bottom: 1rem;
  text-align: left;
  max-height: 150px;
  overflow-y: auto;
}

.paste-item {
  font-size: 0.85rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

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

.paste-more {
  font-size: 0.8rem;
  color: var(--text-secondary);
  padding-top: 0.5rem;
}

.paste-dialog-content p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.paste-buttons {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.paste-btn {
  padding: 0.75rem 1rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.paste-btn:hover {
  transform: scale(1.05);
}

.paste-btn.planned:hover {
  background: var(--warning);
  color: #000;
}

.paste-btn.in-progress:hover {
  background: var(--accent);
  color: #fff;
}

.paste-btn.completed:hover {
  background: var(--success);
  color: #000;
}

.paste-cancel {
  padding: 0.5rem 1.5rem;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.85rem;
  transition: color 0.2s;
}

.paste-cancel:hover {
  color: var(--text-primary);
}

/* Footer with data controls */
.app-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.5rem 2rem;
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: flex-end;
}

.data-controls {
  display: flex;
  gap: 0.5rem;
}

.data-btn {
  padding: 0.4rem 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.data-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Adjust board padding to account for footer */
.board {
  padding-bottom: 4rem;
}
/* Image paste preview in modal */
.image-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.image-preview-item {
  position: relative;
  display: inline-block;
}

.image-preview-item img {
  max-width: 150px;
  max-height: 100px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  object-fit: cover;
}

.image-preview-item .remove-img {
  position: absolute;
  top: -6px;
  right: -6px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  border: none;
  cursor: pointer;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.image-preview-item .remove-img:hover {
  background: var(--accent-hover);
}

.hint-small {
  font-size: 0.75rem;
  color: var(--text-secondary);
  opacity: 0.7;
  font-weight: normal;
}

/* Images in task descriptions */
.task-desc img {
  max-width: 100%;
  border-radius: 6px;
  margin-top: 0.5rem;
  cursor: pointer;
  transition: transform 0.2s;
}

.task-desc img:hover {
  transform: scale(1.02);
}

/* Image lightbox */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  cursor: zoom-out;
}

.lightbox img {
  max-width: 95%;
  max-height: 95%;
  object-fit: contain;
  border-radius: 8px;
}

/* Archive column specific styles */
.archive-search {
  margin-bottom: 1rem;
}

.archive-search input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.2);
  color: var(--text-primary);
  font-size: 0.85rem;
}

.archive-search input:focus {
  outline: none;
  border-color: var(--accent);
}

.archive-search input::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

.archive-actions {
  display: flex;
  gap: 0.5rem;
}

.delete-all-btn {
  padding: 0.3rem 0.6rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  background: rgba(255, 100, 100, 0.2);
  color: var(--accent-hover);
  font-size: 0.7rem;
  cursor: pointer;
  transition: all 0.2s;
}

.delete-all-btn:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* Footer toggle buttons */
.column-toggles {
  display: flex;
  gap: 0.5rem;
}

.toggle-btn {
  padding: 0.4rem 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.toggle-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Future Plans toggle active state */
#toggleFuturePlans.active {
  background: rgba(155, 89, 182, 0.3);
  border-color: #9b59b6;
  color: var(--text-primary);
}

/* Archives toggle active state */
#toggleArchives.active {
  background: rgba(127, 140, 141, 0.3);
  border-color: #7f8c8d;
  color: var(--text-primary);
}

/* Archived task styling */
.archives-column .task {
  opacity: 0.8;
  border-left: 3px solid #7f8c8d;
}

.archives-column .task .restore-btn {
  background: rgba(74, 222, 128, 0.2);
  color: var(--success);
}

.archives-column .task .restore-btn:hover {
  background: var(--success);
  color: #000;
}

/* Update footer layout */
.app-footer {
  justify-content: space-between;
}

/* Responsive - stack columns on smaller screens */
@media (max-width: 1600px) {
  .board.show-future-plans.show-archives {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 1200px) {
  .board.show-future-plans,
  .board.show-archives {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .board.show-future-plans.show-archives {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 900px) {
  .board, 
  .board.show-future-plans, 
  .board.show-archives,
  .board.show-future-plans.show-archives {
    grid-template-columns: 1fr;
  }
}