:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --border-color: #30363d;
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --accent-blue: #58a6ff;
  --accent-green: #3fb950;
  --accent-yellow: #d29922;
  --accent-purple: #a371f7;
  --accent-red: #f85149;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

header h1 {
  font-size: 1.5rem;
}

nav {
  display: flex;
  gap: 1rem;
  align-items: center;
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: all 0.2s;
}

nav a:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

nav a.active {
  color: var(--accent-blue);
  background: rgba(88, 166, 255, 0.1);
}

.user-info {
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: 0 0.5rem;
}

/* Buttons */
.btn-primary {
  background: var(--accent-blue);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: opacity 0.2s;
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-danger {
  background: var(--accent-red);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
}

.btn-edit {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  padding: 0.25rem;
}

/* Board Container - Swimlane View */
.board-container {
  display: flex;
  gap: 1rem;
  padding: 1.5rem;
  overflow-x: auto;
  min-height: calc(100vh - 80px);
}

.column {
  flex: 1 1 0;
  min-width: 280px;
  max-width: 400px;
  background: var(--bg-secondary);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 120px);
}

.column-header {
  padding: 1rem;
  border-top: 3px solid var(--accent-blue);
  border-radius: 8px 8px 0 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.column-header h2 {
  font-size: 0.95rem;
  font-weight: 600;
}

.task-count {
  background: var(--bg-tertiary);
  padding: 0.25rem 0.5rem;
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.task-list {
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* Task Cards */
.task-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 0.75rem;
  cursor: grab;
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
}

.task-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

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

.ticket-number {
  font-size: 0.8rem;
  font-weight: bold;
  color: var(--text-secondary);
  font-family: monospace;
  background: var(--bg-tertiary);
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  white-space: nowrap;
}

.task-card .ticket-number {
  display: inline-block;
  margin-bottom: 0.25rem;
  margin-left: 6px;
}

.task-card h3 {
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  padding-left: 6px;
}

.task-description {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  line-height: 1.4;
  padding-left: 6px;
}

.task-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.task-priority {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  border-radius: 6px 0 0 6px;
}

.priority-1 { background: #6b7280; }
.priority-2 { background: #3b82f6; }
.priority-3 { background: #f59e0b; }
.priority-4 { background: #f97316; }
.priority-5 { background: #ef4444; }

.complexity {
  background: var(--bg-secondary);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

.assignee {
  font-size: 1.1rem;
}

/* Drop Zone Styling */
.task-list.drag-over {
  background: rgba(88, 166, 255, 0.1);
  border: 2px dashed var(--accent-blue);
  border-radius: 6px;
}

/* Backlog View */
.backlog-container {
  padding: 1.5rem 2rem;
}

.backlog-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.backlog-stats {
  display: flex;
  gap: 1.5rem;
  color: var(--text-secondary);
}

.backlog-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-secondary);
  border-radius: 8px;
  overflow: hidden;
}

.backlog-table th,
.backlog-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.backlog-table th {
  background: var(--bg-tertiary);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
}

.backlog-table tr:hover {
  background: var(--bg-tertiary);
}

.priority-badge {
  display: inline-block;
  width: 24px;
  height: 24px;
  line-height: 24px;
  text-align: center;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.8rem;
}

.priority-badge.priority-1 { background: #6b7280; }
.priority-badge.priority-2 { background: #3b82f6; }
.priority-badge.priority-3 { background: #f59e0b; }
.priority-badge.priority-4 { background: #f97316; }
.priority-badge.priority-5 { background: #ef4444; }

.status-select,
.priority-select {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.35rem 0.5rem;
  border-radius: 4px;
  font-size: 0.85rem;
}

.priority-select {
  width: 50px;
  text-align: center;
}

.task-name {
  font-weight: 500;
}

.task-desc {
  color: var(--text-secondary);
  font-size: 0.85rem;
  max-width: 300px;
}

.points {
  text-align: center;
}

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

.modal.show {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}

.modal-content.modal-large {
  max-width: 900px;
}

.modal-content.modal-xlarge {
  max-width: 800px;
  max-height: 90vh;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.modal-content.modal-xlarge h2 {
  padding: 1.5rem 1.5rem 0;
  margin-bottom: 0;
}

.modal-content.modal-xlarge .close {
  right: 1.5rem;
  top: 1rem;
}

.modal-body-scrollable {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
}

.modal-body {
  display: flex;
  gap: 1.5rem;
}

.modal-main {
  flex: 1;
  min-width: 0;
}

.modal-sidebar {
  width: 320px;
  border-left: 1px solid var(--border-color);
  padding-left: 1.5rem;
  max-height: 60vh;
  overflow-y: auto;
}

.modal-sidebar h3 {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

/* Comments Section with Tabs */
.comments-section {
  margin-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
}

.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  cursor: pointer;
  font-size: 0.9rem;
  border-radius: 6px 6px 0 0;
  transition: all 0.2s;
}

.tab-btn:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.tab-btn.active {
  color: var(--accent-blue);
  background: var(--bg-tertiary);
  border-bottom: 2px solid var(--accent-blue);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Comments */
.comments-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1rem;
  max-height: 250px;
  overflow-y: auto;
}

.comment {
  background: var(--bg-tertiary);
  border-radius: 6px;
  padding: 0.75rem;
}

.comment-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.comment-author {
  font-weight: 600;
  font-size: 0.85rem;
}

.comment-time {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.comment-text {
  font-size: 0.9rem;
  line-height: 1.4;
  white-space: pre-wrap;
}

.comment-text .mention {
  color: var(--accent-blue);
  font-weight: 500;
}

.add-comment textarea {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.6rem;
  border-radius: 6px;
  font-size: 0.9rem;
  resize: vertical;
  min-height: 80px;
  margin-bottom: 0.5rem;
}

.add-comment textarea:focus {
  outline: none;
  border-color: var(--accent-blue);
}

.add-comment button {
  width: 100%;
}

/* History */
.history-list {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.history-item {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-color);
}

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

.history-action {
  color: var(--text-primary);
}

.history-user {
  color: var(--accent-blue);
}

.history-time {
  display: block;
  font-size: 0.7rem;
  margin-top: 0.25rem;
}

/* Comment count badge on cards */
.comment-count {
  background: var(--bg-secondary);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.75rem;
}

.close {
  position: absolute;
  right: 1rem;
  top: 0.75rem;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-secondary);
}

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

.modal-content h2 {
  margin-bottom: 1.5rem;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.6rem;
  border-radius: 6px;
  font-size: 0.95rem;
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-actions {
  display: flex;
  justify-content: space-between;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

/* Error Page */
.error-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 80px);
  gap: 1rem;
}

.error-container h2 {
  font-size: 2rem;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* RFP and Closed column styling */
.column[data-status="rfp"] .column-header {
  border-top-color: #06b6d4;
}

.column[data-status="closed"] .column-header {
  border-top-color: #374151;
}

.column[data-status="closed"] .task-card {
  opacity: 0.7;
}

/* Archive Page */
.archive-container {
  padding: 1.5rem 2rem;
}

.archive-header {
  margin-bottom: 1.5rem;
}

.archive-header h2 {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

.archive-subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.archive-filters {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.filter-group label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.filter-input,
.filter-select {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  font-size: 0.9rem;
  min-width: 180px;
}

.filter-input-sm {
  min-width: 120px;
}

.filter-input:focus,
.filter-select:focus {
  outline: none;
  border-color: var(--accent-blue);
}

.filter-group.date-range {
  flex-direction: row;
  align-items: flex-end;
  gap: 0.5rem;
}

.filter-group.date-range label {
  align-self: flex-end;
  padding-bottom: 0.5rem;
  margin-right: 0.25rem;
}

.date-separator {
  color: var(--text-secondary);
  padding-bottom: 0.5rem;
}

.filter-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
}

.btn-secondary:hover {
  background: var(--border-color);
}

.result-count {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-left: 0.5rem;
}

/* Archive Table */
.archive-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-secondary);
  border-radius: 8px;
  overflow: hidden;
}

.archive-table th,
.archive-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.archive-table th {
  background: var(--bg-tertiary);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  white-space: nowrap;
}

.archive-table th.sortable {
  cursor: pointer;
  user-select: none;
}

.archive-table th.sortable:hover {
  color: var(--text-primary);
}

.archive-table th.sort-asc::after {
  content: ' ▲';
  font-size: 0.7rem;
}

.archive-table th.sort-desc::after {
  content: ' ▼';
  font-size: 0.7rem;
}

.archive-table .task-row {
  cursor: pointer;
  transition: background 0.2s;
}

.archive-table .task-row:hover {
  background: var(--bg-tertiary);
}

.archive-table .task-name {
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.archive-table .task-desc {
  color: var(--text-secondary);
  font-size: 0.8rem;
}

/* Status badges */
.status-badge {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
}

.status-badge.status-backlog { background: rgba(107, 114, 128, 0.2); color: #9ca3af; }
.status-badge.status-todo { background: rgba(59, 130, 246, 0.2); color: #60a5fa; }
.status-badge.status-in-progress { background: rgba(245, 158, 34, 0.2); color: #fbbf24; }
.status-badge.status-in-qa { background: rgba(139, 92, 246, 0.2); color: #a78bfa; }
.status-badge.status-completed { background: rgba(16, 185, 129, 0.2); color: #34d399; }
.status-badge.status-rfp { background: rgba(6, 182, 212, 0.2); color: #22d3ee; }
.status-badge.status-closed { background: rgba(55, 65, 81, 0.3); color: #9ca3af; }

.no-results {
  text-align: center;
  padding: 3rem;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border-radius: 8px;
}

/* Real-time update animations */
@keyframes flash-new {
  0% { background: rgba(16, 185, 129, 0.4); transform: scale(1.02); }
  100% { background: var(--bg-tertiary); transform: scale(1); }
}

@keyframes flash-update {
  0% { background: rgba(59, 130, 246, 0.4); }
  100% { background: var(--bg-tertiary); }
}

@keyframes fade-out {
  0% { opacity: 1; transform: scale(1); }
  100% { opacity: 0; transform: scale(0.95); }
}

@keyframes slide-in {
  0% { opacity: 0; transform: translateX(100%); }
  100% { opacity: 1; transform: translateX(0); }
}

/* Toast notifications */
#toast-container {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

/* WebSocket status indicator */
#ws-status {
  cursor: help;
}

/* Backlog drag handles */
.col-handle {
  width: 30px;
}

.drag-handle {
  cursor: grab;
  color: var(--text-secondary);
  font-weight: bold;
  letter-spacing: -2px;
  padding: 0.5rem;
  user-select: none;
  text-align: center;
}

.drag-handle:hover {
  color: var(--accent-blue);
}

.drag-handle:active {
  cursor: grabbing;
}

.backlog-row.dragging {
  opacity: 0.5;
  background: var(--bg-tertiary);
}

.backlog-row.drag-over-above {
  border-top: 2px solid var(--accent-blue);
}

.backlog-row.drag-over-below {
  border-bottom: 2px solid var(--accent-blue);
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Attachments */
.attachments-section {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.attachments-section label {
  font-weight: 600;
  margin-bottom: 0.5rem;
  display: block;
}

.attachments-list {
  margin-bottom: 0.75rem;
}

.attachment-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem;
  background: var(--bg-tertiary);
  border-radius: 4px;
  margin-bottom: 0.25rem;
}

.attachment-thumb {
  width: 40px;
  height: 40px;
  object-fit: cover;
  border-radius: 4px;
}

.attachment-name {
  flex: 1;
  color: var(--accent-blue);
  text-decoration: none;
  font-size: 0.9rem;
}

.attachment-name:hover {
  text-decoration: underline;
}

.attachment-size {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.btn-delete-attachment {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.25rem;
}

.btn-delete-attachment:hover {
  color: #ef4444;
}

.attachment-upload {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.upload-status {
  font-size: 0.85rem;
  color: var(--text-secondary);
}