/* Kanban Dashboard — Dark Theme */
:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --bg-hover: #292e36;
  --border: #30363d;
  --text-primary: #c9d1d9;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --accent: #58a6ff;
  --success: #3fb950;
  --danger: #f85149;
  --warning: #d29922;
  --purple: #bc8cff;
  --radius: 6px;
  --radius-lg: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,0.3);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* --- Sidebar --- */
.sidebar {
  width: 260px;
  min-width: 260px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid var(--border);
}

.sidebar-header h1 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.sidebar-header .subtitle {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.sidebar-nav {
  padding: 12px 0;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s;
  font-size: 0.9rem;
  border-left: 3px solid transparent;
}

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

.nav-item.active {
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border-left-color: var(--accent);
}

.nav-item .icon { font-size: 1.1rem; width: 24px; text-align: center; }

.nav-section {
  padding: 16px 20px 6px;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.project-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px 8px 32px;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.15s;
}

.project-item:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.project-item.active { color: var(--accent); }
.project-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }

/* --- Main Content --- */
.main {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.page-header {
  padding: 24px 32px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
}

.page-header h2 { font-size: 1.5rem; font-weight: 600; }
.page-header .desc { color: var(--text-secondary); font-size: 0.85rem; margin-top: 4px; }

.page-content {
  flex: 1;
  padding: 24px 32px;
  overflow-y: auto;
}

/* --- Dashboard Stats --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: transform 0.15s;
}

.stat-card:hover { transform: translateY(-2px); }
.stat-card .stat-icon { font-size: 1.5rem; margin-bottom: 8px; }
.stat-card .stat-value { font-size: 2rem; font-weight: 700; }
.stat-card .stat-label { font-size: 0.8rem; color: var(--text-secondary); margin-top: 2px; }

/* --- Dashboard Grid --- */
.dashboard-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}

@media (max-width: 1100px) {
  .dashboard-grid { grid-template-columns: 1fr; }
}

/* --- Project Cards --- */
.project-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.project-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  cursor: pointer;
  transition: all 0.15s;
  border-top: 3px solid var(--accent);
}

.project-card:hover { transform: translateY(-2px); border-color: var(--accent); }
.project-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; }
.project-card .desc { font-size: 0.8rem; color: var(--text-secondary); margin-bottom: 12px; }
.project-card .meta { font-size: 0.75rem; color: var(--text-muted); display: flex; gap: 12px; }

/* --- Activity Feed --- */
.activity-feed {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  max-height: 500px;
  overflow-y: auto;
}

.activity-feed h3 { font-size: 1rem; margin-bottom: 16px; color: var(--text-primary); }

.activity-item {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
}

.activity-item:last-child { border-bottom: none; }
.activity-item .time { font-size: 0.7rem; color: var(--text-muted); }
.activity-item .actor { color: var(--accent); font-weight: 500; }
.activity-item .detail { color: var(--text-secondary); margin-top: 2px; }

/* --- Kanban Board --- */
.kanban-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 32px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
}

.kanban-header h2 { font-size: 1.5rem; font-weight: 600; }

.kanban-header .project-meta {
  display: flex;
  gap: 16px;
  align-items: center;
}

.kanban-header .drive-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.85rem;
}

.kanban-header .drive-link:hover { text-decoration: underline; }

.kanban-board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 24px 32px;
  flex: 1;
  overflow-x: auto;
  align-content: start;
}

@media (max-width: 1200px) { .kanban-board { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) { .kanban-board { grid-template-columns: 1fr; } }

.kanban-column {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  min-height: 200px;
  max-height: calc(100vh - 180px);
}

.column-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.9rem;
}

.column-header .count {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.7rem;
  padding: 1px 7px;
  border-radius: 10px;
  margin-left: auto;
  font-weight: 500;
}

.column-tasks {
  flex: 1;
  padding: 12px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.column-tasks.drag-over {
  background: rgba(88, 166, 255, 0.05);
}

/* --- Task Cards --- */
.task-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  cursor: grab;
  transition: all 0.15s;
  position: relative;
}

.task-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

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

.task-card .task-title {
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 6px;
  line-height: 1.4;
}

.task-card .task-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.task-card .task-meta {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}

.badge {
  font-size: 0.65rem;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 500;
  white-space: nowrap;
}

.badge-high { background: rgba(248,81,73,0.15); color: var(--danger); }
.badge-medium { background: rgba(210,153,34,0.15); color: var(--warning); }
.badge-low { background: rgba(110,118,129,0.15); color: var(--text-muted); }
.badge-assignee { background: rgba(88,166,255,0.15); color: var(--accent); }
.badge-armed { background: rgba(63,185,80,0.15); color: var(--success); }
.badge-needs-ok { background: rgba(248,81,73,0.2); color: var(--danger); border: 1px solid var(--danger); }

.task-card .task-id {
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-left: auto;
}

/* --- Add Task --- */
.add-task {
  padding: 8px 12px;
  border-top: 1px solid var(--border);
}

.add-task input {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 10px;
  color: var(--text-primary);
  font-size: 0.8rem;
  outline: none;
}

.add-task input:focus { border-color: var(--accent); }
.add-task input::placeholder { color: var(--text-muted); }

/* --- Empty state --- */
.empty-state {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

.empty-state .icon { font-size: 2rem; margin-bottom: 12px; }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* --- Buttons --- */
.btn {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 16px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s;
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn:hover { border-color: var(--accent); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: #4a90e0; }
.btn-secondary { background: transparent; }
.btn-small { padding: 4px 12px; font-size: 0.75rem; }

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  width: 460px;
  max-width: 90vw;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.modal h3 { font-size: 1.2rem; margin-bottom: 20px; }

.modal label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
  margin-top: 14px;
}

.modal label:first-of-type { margin-top: 0; }

.modal input[type="text"],
.modal textarea {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
  font-family: inherit;
}

.modal input:focus, .modal textarea:focus { border-color: var(--accent); }

.color-picker {
  display: flex;
  gap: 8px;
  align-items: center;
}

.color-picker input[type="radio"] { display: none; }
.color-picker input[type="radio"]:checked + .color-dot { outline: 2px solid var(--text-primary); outline-offset: 2px; }
.color-dot { width: 24px; height: 24px; border-radius: 50%; cursor: pointer; display: inline-block; }

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
}

/* --- File Section --- */
.file-section {
  padding: 16px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
}

.file-section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  cursor: pointer;
}

.file-section-header h4 { font-size: 0.9rem; color: var(--text-secondary); }
.file-section-header .toggle { color: var(--text-muted); font-size: 0.8rem; }

.file-lists {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 900px) { .file-lists { grid-template-columns: 1fr; } }

.file-list h5 { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.05em; }

.file-item {
  font-size: 0.8rem;
  padding: 4px 0;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.file-item .file-icon { color: var(--text-muted); }

/* --- Upload Zone --- */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s;
  margin-top: 12px;
}

.upload-zone:hover, .upload-zone.drag-active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(88,166,255,0.05);
}

.upload-zone input[type="file"] { display: none; }

.upload-progress {
  margin-top: 8px;
  font-size: 0.8rem;
  color: var(--accent);
}

/* --- Loading --- */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  color: var(--text-muted);
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 10px;
}

@keyframes spin { to { transform: rotate(360deg); } }