*, *::before, *::after {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

:root {
  --sidebar-width: 220px;
  --primary: #3370ff;
  --primary-dark: #245bdb;
  --bg: #f5f6f8;
  --card-bg: #ffffff;
  --border: #dee0e3;
  --text: #1f2329;
  --text-secondary: #646a73;
  --text-muted: #8f959e;
  --high: #f54a45;
  --medium: #ff8800;
  --low: #34c724;
  --not-started: #8f959e;
  --in-progress: #3370ff;
  --pending-review: #ff8800;
  --completed: #34c724;
  --cancelled: #8f959e;
  --on-hold: #d4b106;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

body {
  min-height: 100%;
}

button {
  font-family: inherit;
  cursor: pointer;
}

input, select, textarea {
  font-family: inherit;
  font-size: 14px;
}

a {
  color: var(--primary);
  text-decoration: none;
}

.app-shell {
  min-height: 100vh;
  position: relative;
  padding-left: var(--sidebar-width);
  transition: padding-left 0.22s ease;
}

.app-shell.sidebar-collapsed {
  padding-left: 0;
}

.primary-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 20px 16px;
  background: #fff;
  border-right: 1px solid var(--border);
  transform: translateX(0);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
  z-index: 80;
}

.app-shell.sidebar-collapsed .primary-sidebar {
  transform: translateX(calc(-1 * var(--sidebar-width) - 24px));
}

.sidebar-drawer-handle {
  position: fixed;
  top: 22px;
  left: 0;
  width: 22px;
  height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 0 12px 12px 0;
  background: #fff;
  color: var(--primary);
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.12);
  z-index: 75;
}

.sidebar-drawer-handle span {
  display: inline-block;
  font-size: 20px;
  line-height: 1;
  transform: translateX(-1px);
}

.sidebar-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.sidebar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-icon-btn {
  width: 30px;
  height: 30px;
  border: 0;
  border-radius: 8px;
  background: #f5f7fb;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.sidebar-icon-btn:hover,
.sidebar-drawer-handle:hover {
  background: #eef4ff;
  color: var(--primary);
}

.brand-block {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  white-space: nowrap;
}

.brand-subtitle {
  color: var(--text-muted);
  font-size: 12px;
}

.main-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nav-tab {
  position: relative;
  width: 100%;
  padding: 10px 12px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-align: left;
  transition: background 0.15s, color 0.15s;
}

.nav-tab:hover {
  color: var(--text);
  background: #f5f7fb;
}

.nav-tab.active {
  color: var(--primary);
  background: #eef4ff;
  font-weight: 600;
}

.workspace-shell {
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.workspace-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px 16px;
  background: #fff;
  border-bottom: 1px solid var(--border);
}

.workspace-heading h1 {
  margin: 4px 0 0;
  font-size: 24px;
  line-height: 1.25;
}

.workspace-eyebrow {
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
}

.workspace-heading p {
  margin: 8px 0 0;
  color: var(--text-secondary);
  max-width: 720px;
}

.stats {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: #f0f2f5;
  border: 1px solid transparent;
  border-radius: 12px;
  font-size: 12px;
  color: var(--text-secondary);
}

.stat.chip {
  appearance: none;
  cursor: pointer;
  transition: background .16s ease, border-color .16s ease, color .16s ease, transform .16s ease;
}

.stat.chip:hover {
  border-color: #d4daf7;
  background: #eef2ff;
}

.stat.chip.active {
  border-color: rgba(79, 111, 255, 0.25);
  background: #eaf0ff;
  color: var(--primary-dark);
}

.stat.chip.active b {
  color: inherit;
}

.stat.chip:focus-visible {
  outline: 2px solid rgba(79, 111, 255, 0.25);
  outline-offset: 2px;
}

.chip b {
  color: var(--text);
  font-weight: 600;
}

.chip.progress b { color: var(--in-progress); }
.chip.review b { color: var(--pending-review); }
.chip.done b { color: var(--completed); }

.workspace-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.view-toggle {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.view-toggle button {
  padding: 6px 14px;
  border: 0;
  background: #fff;
  color: var(--text-secondary);
}

.view-toggle button.active {
  background: var(--primary);
  color: #fff;
}

button.primary {
  background: var(--primary);
  color: #fff;
  border: 0;
  padding: 7px 16px;
  border-radius: 6px;
  font-size: 14px;
}

button.primary:hover {
  background: var(--primary-dark);
}

button.ghost {
  background: #fff;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 7px 12px;
  border-radius: 6px;
}

button.ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
}

button.icon-btn {
  background: transparent;
  border: 0;
  font-size: 22px;
  line-height: 1;
  color: var(--text-muted);
  padding: 0 6px;
}

button.icon-btn:hover { color: var(--text); }

.user-info {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 13px;
}

.user-info img {
  border-radius: 50%;
  background: #e5e7eb;
}

.sidebar-user {
  margin-top: auto;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fafbfc;
  align-items: flex-start;
}

.sidebar-user-meta {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.sidebar-user-meta span {
  color: var(--text);
  font-weight: 600;
}

.user-info .logout {
  color: var(--text-muted);
  margin-left: 0;
}

.workspace-main {
  min-height: 0;
  display: block;
}

.ghost.compact,
.primary.compact {
  padding: 6px 10px;
  font-size: 12px;
}

.workspace-content {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.context-panel {
  background: #fff;
  border-bottom: 1px solid var(--border);
}

.filters {
  display: flex;
  gap: 10px;
  padding: 14px 24px;
  background: transparent;
  flex-wrap: wrap;
}

.search {
  flex: 1 1 220px;
  min-width: 180px;
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.filters select {
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  min-width: 120px;
}

.search:focus, .filters select:focus,
.modal input:focus, .modal select:focus, .modal textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(51, 112, 255, 0.15);
}

main {
  padding: 20px 24px 40px;
}

#content {
  min-height: 100%;
}

.dashboard {
  display: grid;
  gap: 18px;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.summary-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 18px;
  box-shadow: var(--shadow);
}

.summary-card label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.summary-card strong {
  display: block;
  font-size: 28px;
  line-height: 1.1;
}

.summary-card p {
  margin: 8px 0 0;
  color: var(--text-secondary);
  font-size: 12px;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(300px, 0.7fr);
  gap: 18px;
}

.panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px 12px;
  border-bottom: 1px solid #f0f2f5;
}

.panel-head h3,
.panel-head h2 {
  margin: 0;
  font-size: 16px;
}

.panel-head p {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--text-muted);
}

.panel-body {
  padding: 16px 18px 18px;
}

.project-overview-list,
.task-focus-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.project-overview-item,
.task-focus-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fafbfc;
}

.project-overview-main,
.task-focus-main {
  min-width: 0;
}

.project-overview-main strong,
.task-focus-main strong {
  display: block;
  margin-bottom: 4px;
}

.project-overview-main span,
.task-focus-main span {
  display: block;
  color: var(--text-muted);
  font-size: 12px;
}

.project-overview-progress {
  min-width: 120px;
  text-align: right;
}

.project-overview-progress .progress-bar {
  margin: 0 0 6px;
}

.project-overview-progress span {
  color: var(--text-muted);
  font-size: 12px;
}

.project-list-shell {
  display: grid;
  gap: 12px;
}

.project-list-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.project-list-tabs {
  display: inline-flex;
  align-items: center;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.project-view-tab {
  min-width: 72px;
  padding: 8px 14px;
  border: 0;
  border-right: 1px solid var(--border);
  background: #fff;
  color: var(--text-secondary);
  font-size: 13px;
}

.project-view-tab:last-child {
  border-right: 0;
}

.project-view-tab.active {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
}

.project-view-tab[disabled] {
  color: var(--text-muted);
  background: #fafafa;
  cursor: not-allowed;
}

.project-list-summary {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  color: var(--text-muted);
}

.project-table-view {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  overflow: auto;
}

.project-table {
  min-width: 980px;
}

.project-table thead th {
  background: #f7f8fa;
}

.project-table-row:hover {
  background: #f7faff;
}

.project-name-cell {
  min-width: 260px;
}

.project-name-main {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.project-color-block {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--project-color, var(--primary));
  flex-shrink: 0;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.25);
}

.project-name-text {
  min-width: 0;
}

.project-name-text strong {
  display: block;
  font-size: 14px;
  color: var(--text);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.project-name-text span {
  display: block;
  margin-top: 3px;
  font-size: 12px;
  color: var(--text-muted);
}

.project-progress-cell {
  min-width: 160px;
}

.project-progress-inline {
  display: grid;
  grid-template-columns: minmax(90px, 1fr) auto;
  align-items: center;
  gap: 10px;
}

.project-progress-inline .progress-bar {
  margin-top: 0;
}

/* Board view */
.board {
  display: grid;
  grid-template-columns: repeat(6, minmax(240px, 1fr));
  gap: 14px;
  align-items: start;
}

.column {
  background: #f0f2f5;
  border-radius: 10px;
  padding: 10px;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.column.drag-over {
  background: #e6f0ff;
  outline: 2px dashed var(--primary);
  outline-offset: -2px;
}

.column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  font-weight: 600;
  padding: 4px 6px;
  color: var(--text);
}

.column-header .count {
  background: rgba(0, 0, 0, 0.06);
  border-radius: 10px;
  padding: 1px 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
}

.column[data-status="not_started"] .dot { background: var(--not-started); }
.column[data-status="in_progress"] .dot { background: var(--in-progress); }
.column[data-status="pending_review"] .dot { background: var(--pending-review); }
.column[data-status="completed"] .dot { background: var(--completed); }
.column[data-status="cancelled"] .dot { background: var(--cancelled); }
.column[data-status="on_hold"] .dot { background: var(--on-hold); }

.dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 6px;
}

.cards {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 40px;
}

.card {
  background: var(--card-bg);
  border-radius: 8px;
  padding: 10px 12px;
  box-shadow: var(--shadow);
  border-left: 3px solid var(--medium);
  cursor: pointer;
  transition: transform 0.05s, box-shadow 0.15s;
}

.card:hover {
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
  transform: translateY(-1px);
}

.card.priority-high { border-left-color: var(--high); }
.card.priority-medium { border-left-color: var(--medium); }
.card.priority-low { border-left-color: var(--low); }

.card-title {
  font-weight: 500;
  margin: 0 0 6px;
  word-break: break-word;
}

.card.status-completed .card-title {
  color: var(--text-muted);
  text-decoration: line-through;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--text-secondary);
}

.card-meta .assignee {
  background: #eef3ff;
  color: var(--primary-dark);
  padding: 1px 7px;
  border-radius: 10px;
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-meta .due {
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.card-meta .due.overdue {
  color: var(--high);
  font-weight: 500;
}

.progress-bar {
  height: 5px;
  background: #e5e7eb;
  border-radius: 3px;
  overflow: hidden;
  margin-top: 8px;
}

.progress-bar > i {
  display: block;
  height: 100%;
  background: var(--primary);
  border-radius: 3px;
}

.card.status-completed .progress-bar > i { background: var(--completed); }

.subtask-badge {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 6px;
}

.empty-column {
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
  padding: 20px 8px;
  border: 1px dashed #d0d3d6;
  border-radius: 6px;
}

/* List view */
.list-view {
  background: #fff;
  border-radius: 10px;
  overflow: auto;
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 720px;
}

thead th {
  background: #fafafa;
  text-align: left;
  padding: 10px 14px;
  color: var(--text-secondary);
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tbody td {
  padding: 10px 14px;
  border-bottom: 1px solid #f0f2f5;
  vertical-align: middle;
}

tbody tr {
  cursor: pointer;
}

tbody tr:hover {
  background: #f8faff;
}

.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 12px;
  line-height: 1.6;
}

.tag.status-not_started { background: #f0f2f5; color: #646a73; }
.tag.status-in_progress { background: #e6f0ff; color: var(--primary-dark); }
.tag.status-pending_review { background: #fff3e0; color: #cc6a00; }
.tag.status-completed { background: #e8f8e5; color: #2a8a1d; }
.tag.status-cancelled { background: #f0f2f5; color: #8f959e; text-decoration: line-through; }
.tag.status-on_hold { background: #fffbe6; color: #8a6d00; }

.tag.priority-high { background: #ffeceb; color: #c9302c; }
.tag.priority-medium { background: #fff3e0; color: #cc6a00; }
.tag.priority-low { background: #e8f8e5; color: #2a8a1d; }

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state .big {
  font-size: 40px;
  margin-bottom: 10px;
}

.empty-state button {
  margin-top: 12px;
}

/* Modal */
.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 100;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 40px 16px;
  overflow-y: auto;
}

.modal {
  background: #fff;
  width: 100%;
  max-width: 620px;
  border-radius: 12px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 {
  margin: 0;
  font-size: 16px;
}

.modal-body {
  padding: 18px 20px;
  max-height: 70vh;
  overflow-y: auto;
}

.form-row {
  margin-bottom: 14px;
}

.form-row label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 5px;
}

.form-row label .req { color: var(--high); }

.form-row input[type=text],
.form-row input[type=date],
.form-row input[type=search],
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.form-row textarea {
  min-height: 70px;
  resize: vertical;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.progress-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.progress-row input[type=range] {
  flex: 1;
}

.subtasks {
  border-top: 1px dashed var(--border);
  padding-top: 12px;
  margin-top: 4px;
}

.subtask-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
}

.subtask-item input[type=text] {
  flex: 1;
  padding: 5px 8px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: transparent;
}

.subtask-item input[type=text]:hover {
  border-color: var(--border);
}

.subtask-item input[type=text]:focus {
  border-color: var(--primary);
  background: #fff;
}

.subtask-item.completed input[type=text] {
  text-decoration: line-through;
  color: var(--text-muted);
}

.subtask-item button {
  visibility: hidden;
  background: transparent;
  border: 0;
  color: var(--text-muted);
  font-size: 16px;
}

.subtask-item:hover button { visibility: visible; }
.subtask-item button:hover { color: var(--high); }

.add-subtask {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.add-subtask input {
  flex: 1;
  padding: 7px 10px;
  border: 1px dashed var(--border);
  border-radius: 6px;
  background: #fafafa;
}

.transitions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 4px;
}

.transitions button {
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-secondary);
  font-size: 13px;
}

.transitions button:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.transitions button.danger:hover {
  border-color: var(--high);
  color: var(--high);
}

.modal-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  background: #fafafa;
}

.modal-footer .right {
  display: flex;
  gap: 8px;
}

.delete-btn {
  background: transparent;
  border: 1px solid var(--high);
  color: var(--high);
  padding: 7px 14px;
  border-radius: 6px;
}

.delete-btn:hover {
  background: var(--high);
  color: #fff;
}

.save-btn {
  background: var(--primary);
  color: #fff;
  border: 0;
  padding: 7px 18px;
  border-radius: 6px;
}

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

.cancel-btn {
  background: #fff;
  border: 1px solid var(--border);
  padding: 7px 16px;
  border-radius: 6px;
  color: var(--text-secondary);
}

.detail-meta {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.detail-desc {
  white-space: pre-wrap;
  word-break: break-word;
  background: #fafafa;
  padding: 10px 12px;
  border-radius: 6px;
  min-height: 40px;
  color: var(--text);
  margin-bottom: 6px;
}

.attachments-section {
  margin-top: 16px;
  border-top: 1px dashed var(--border);
  padding-top: 12px;
}

.attachments-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.attachments-head label {
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
}

.attachments-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.attachment-dropzone {
  padding: 12px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  background: #fafafa;
  color: var(--text-muted);
  font-size: 12px;
  text-align: center;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.attachment-dropzone.drag-over {
  border-color: var(--primary);
  background: #f4f8ff;
  color: var(--primary-dark);
}

.attachment-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 10px;
}

.attachment-list.loading {
  color: var(--text-muted);
  font-size: 12px;
}

.attachment-empty {
  padding: 10px 12px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 12px;
  text-align: center;
}

.attachment-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}

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

.attachment-name {
  display: inline-block;
  max-width: 100%;
  font-size: 13px;
  font-weight: 500;
  color: var(--primary-dark);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.attachment-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-muted);
}

.attachment-buttons {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.attachment-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  height: 32px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  background: #fff;
  font-size: 12px;
}

.attachment-link:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(31, 35, 41, 0.92);
  color: #fff;
  padding: 9px 18px;
  border-radius: 6px;
  font-size: 13px;
  z-index: 200;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.toast.error { background: #c9302c; }

/* Nav bar */
/* Project list */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
  align-items: start;
}

.project-card {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 14px 16px;
  box-shadow: var(--shadow);
  border-left: 3px solid var(--project-color, var(--border));
  cursor: pointer;
  transition: transform 0.05s, box-shadow 0.15s;
}

.project-card:hover {
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
  transform: translateY(-1px);
}

.project-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
}

.project-card-name {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.project-card-desc {
  margin: 0 0 10px;
  font-size: 12px;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 36px;
}

.project-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
}

.project-card-stats {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag.project-status-active { background: #e6f0ff; color: var(--primary-dark); }
.tag.project-status-completed { background: #e8f8e5; color: #2a8a1d; }
.tag.project-status-archived { background: #f0f2f5; color: #646a73; }

/* Project detail */
.project-detail {
  display: grid;
  gap: 18px;
}

.project-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  border-left: 4px solid var(--project-color, var(--border));
  box-shadow: var(--shadow);
}

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

.project-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  color: var(--text-muted);
  font-size: 12px;
}

.project-title-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.project-header h2 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
}

.project-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.project-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 10px;
}

.project-description {
  margin-top: 14px;
}

.project-description.empty {
  color: var(--text-muted);
}

.project-summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.project-detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 18px;
}

.project-section {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.project-progress-row {
  margin-top: 12px;
}

.project-plan-placeholder {
  margin-top: 16px;
  padding: 14px 16px;
  border: 1px dashed var(--border);
  border-radius: 12px;
  background: #fafbfc;
}

.project-plan-placeholder strong {
  display: block;
  margin-bottom: 6px;
}

.project-plan-placeholder span {
  display: block;
  color: var(--text-muted);
  font-size: 12px;
}

.project-members {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.project-members .member {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 10px;
  background: #eef3ff;
  color: var(--primary-dark);
  font-size: 12px;
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.project-members img {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #e5e7eb;
  border: 2px solid #fff;
}

/* Project badge in task cards */
.task-project-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 1px 8px;
  border-radius: 10px;
  background: #f0f2f5;
  font-size: 11px;
  color: var(--text-secondary);
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.task-project-badge .dot {
  width: 6px;
  height: 6px;
  margin-right: 0;
  flex-shrink: 0;
  background: var(--project-color, var(--not-started));
}

/* Form additions: color picker & project select */
.color-picker {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.color-picker .color-swatch {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid transparent;
  padding: 0;
  background: var(--swatch-color, var(--border));
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.1s;
}

.color-picker .color-swatch:hover {
  transform: scale(1.1);
}

.color-picker .color-swatch.selected {
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--swatch-color, var(--primary));
}

.project-select-wrap {
  position: relative;
}

.project-select-wrap .dot {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  margin-right: 0;
  pointer-events: none;
  background: var(--project-color, var(--border));
}

.project-select-wrap select {
  padding-left: 26px;
}

/* Project filter bar */
.project-filter-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.project-filter-bar select {
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  min-width: 120px;
}

.project-filter-bar select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(51, 112, 255, 0.15);
}

/* Empty state: projects variant */
.empty-state.projects {
  background: var(--card-bg);
  border-radius: 10px;
  box-shadow: var(--shadow);
}

.empty-state.projects .hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

@media (max-width: 1200px) {
  .summary-grid,
  .project-summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .workspace-main,
  .dashboard-grid,
  .project-detail-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .board {
    grid-template-columns: repeat(3, minmax(240px, 1fr));
  }
}

@media (max-width: 768px) {
  .app-shell {
    padding-left: 0;
  }

  .primary-sidebar {
    padding: 14px;
    gap: 14px;
    width: min(84vw, 280px);
  }

  .app-shell.sidebar-collapsed .primary-sidebar {
    transform: translateX(calc(-100% - 24px));
  }

  .sidebar-top {
    align-items: center;
  }

  .main-nav {
    flex-direction: column;
  }

  .workspace-header {
    padding: 14px;
  }

  .filters,
  .project-filter-bar {
    padding: 10px 14px;
  }

  main {
    padding: 12px;
  }
  .board {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 10px;
    padding-bottom: 10px;
  }
  .column {
    flex: 0 0 84vw;
    scroll-snap-align: start;
    max-height: calc(100vh - 240px);
    overflow-y: auto;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .workspace-actions,
  .project-header,
  .project-header-actions {
    width: 100%;
    justify-content: space-between;
  }
  .sidebar-user {
    margin-top: 0;
  }
  .modal-mask { padding: 0; }
  .modal {
    max-width: 100%;
    border-radius: 0;
    min-height: 100vh;
  }
  .modal-body { max-height: none; }

  .summary-grid,
  .project-summary-grid {
    grid-template-columns: 1fr;
  }

  .project-list-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .project-list-summary {
    flex-wrap: wrap;
    gap: 8px 14px;
  }

  .attachment-item {
    align-items: flex-start;
    flex-direction: column;
  }
}