/* Imports & Reset */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* Colors */
  --bg-main: #0b0f19;
  --bg-card: rgba(22, 28, 45, 0.6);
  --bg-sidebar: rgba(17, 24, 39, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  
  --primary: #6366f1;
  --primary-glow: rgba(99, 102, 241, 0.15);
  --primary-hover: #4f46e5;
  
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.1);
  --warning: #f59e0b;
  --warning-glow: rgba(245, 158, 11, 0.1);
  --danger: #ef4444;
  --danger-glow: rgba(239, 68, 68, 0.1);
  --info: #06b6d4;
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  /* Priority Colors */
  --priority-low: #10b981;
  --priority-medium: #f59e0b;
  --priority-high: #ef4444;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Layout Metrics */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.1) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(6, 182, 212, 0.08) 0px, transparent 50%),
    radial-gradient(at 50% 100%, rgba(139, 92, 246, 0.05) 0px, transparent 50%);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
}

/* Glassmorphism utility */
.glass {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

/* App Header */
header {
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--border-color);
  background: rgba(11, 15, 25, 0.7);
  backdrop-filter: blur(20px);
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary) 0%, #8b5cf6 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px var(--primary-glow);
}

.logo-icon svg {
  width: 22px;
  height: 22px;
  color: #fff;
}

.logo-text h1 {
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(to right, #fff, #a5b4fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-text span {
  font-size: 0.75rem;
  color: var(--text-secondary);
  display: block;
}

.controls-section {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Switcher Select */
.view-switcher-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.04);
  padding: 0.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.view-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-family: inherit;
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
}

.view-btn.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.view-btn svg {
  width: 16px;
  height: 16px;
}

/* Action Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #7c3aed 100%);
  color: #fff;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.3);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn-danger {
  background: var(--danger-glow);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

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

/* Main Layout Grid */
.app-container {
  flex: 1;
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: calc(100vh - 81px);
}

/* Sidebar Styling */
aside {
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.sidebar-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.member-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.member-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.member-item:hover, .member-item.active {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--border-color);
}

.member-item.active {
  background: rgba(99, 102, 241, 0.08);
  border-color: rgba(99, 102, 241, 0.3);
}

.member-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Avatar design */
.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.member-details {
  display: flex;
  flex-direction: column;
}

.member-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

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

.member-task-count {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: 20px;
  border: 1px solid var(--border-color);
}

.member-item.active .member-task-count {
  background: var(--primary);
  color: #fff;
  border-color: transparent;
}

/* Main Content Area */
main {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  overflow-y: auto;
}

/* Top Dashboard Metrics */
.dashboard-overview {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
}

.stat-card {
  padding: 1.25rem;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  gap: 1rem;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary);
}

.stat-card.todo::before { background: var(--text-secondary); }
.stat-card.in-progress::before { background: var(--warning); }
.stat-card.review::before { background: var(--info); }
.stat-card.done::before { background: var(--success); }

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
}

.stat-icon svg {
  width: 24px;
  height: 24px;
}

.stat-card.todo .stat-icon svg { color: var(--text-secondary); }
.stat-card.in-progress .stat-icon svg { color: var(--warning); }
.stat-card.review .stat-icon svg { color: var(--info); }
.stat-card.done .stat-icon svg { color: var(--success); }

.stat-content {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  font-family: 'Outfit', sans-serif;
  color: var(--text-primary);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

/* Leaderboard/Team progress in Manager View */
.team-progress-section {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.progress-card {
  padding: 1.5rem;
  border-radius: var(--radius-lg);
}

.section-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.section-header-row h3 {
  font-size: 1.125rem;
  font-weight: 700;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.team-overview-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.team-overview-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.user-progress-bar-container {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.user-progress-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.progress-track {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary) 0%, #8b5cf6 100%);
  border-radius: 3px;
  transition: width 0.4s ease;
}

.user-task-summary {
  display: flex;
  gap: 0.75rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.user-task-summary span b {
  color: var(--text-primary);
}

/* Kanban Board Container */
.board-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.board-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.board-header h2 {
  font-size: 1.35rem;
  font-weight: 700;
}

.kanban-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  align-items: start;
}

/* Kanban Columns */
.kanban-column {
  background: rgba(17, 24, 39, 0.4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem;
  min-height: 500px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.kanban-column.drag-over {
  background: rgba(99, 102, 241, 0.03);
  border-color: rgba(99, 102, 241, 0.4);
  border-style: dashed;
}

.column-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.column-title-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.column-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.kanban-column:nth-child(1) .column-dot { background: var(--text-secondary); }
.kanban-column:nth-child(2) .column-dot { background: var(--warning); }
.kanban-column:nth-child(3) .column-dot { background: var(--info); }
.kanban-column:nth-child(4) .column-dot { background: var(--success); }

.column-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.column-count {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 12px;
  font-weight: 600;
}

.task-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 400px; /* Allows dropping in empty columns */
}

/* Kanban Cards */
.task-card {
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  cursor: grab;
  user-select: none;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.task-card:active {
  cursor: grabbing;
}

.task-card.dragging {
  opacity: 0.4;
  border-color: var(--primary);
  transform: scale(0.98);
}

.task-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
  background: rgba(30, 41, 59, 0.7);
}

.task-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
}

.task-title {
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
}

.priority-badge {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

.priority-low {
  background: var(--success-glow);
  color: var(--priority-low);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.priority-medium {
  background: var(--warning-glow);
  color: var(--priority-medium);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.priority-high {
  background: var(--danger-glow);
  color: var(--priority-high);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.task-description {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
  /* Multi-line ellipsis */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.task-dates {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px dashed var(--border-color);
  padding-top: 0.5rem;
}

.task-date-row {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.task-date-row svg {
  width: 12px;
  height: 12px;
}

.due-date {
  color: var(--text-secondary);
}

.due-date.overdue {
  color: var(--danger);
  font-weight: 600;
}

.due-date.approaching {
  color: var(--warning);
  font-weight: 600;
}

.task-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 0.25rem;
}

.task-assignee {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.task-actions {
  display: flex;
  gap: 0.25rem;
}

.icon-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.icon-btn-danger:hover {
  background: var(--danger-glow);
  color: var(--danger);
}

.icon-btn svg {
  width: 14px;
  height: 14px;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.empty-state svg {
  width: 24px;
  height: 24px;
  stroke-dasharray: 4;
}

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(5, 8, 16, 0.85);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: all;
}

.modal-container {
  width: 90%;
  max-width: 500px;
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  transform: scale(0.9);
  transition: transform var(--transition-normal);
}

.modal-backdrop.active .modal-container {
  transform: scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-control {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.625rem 0.875rem;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.875rem;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%239ca3af'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1rem;
  padding-right: 2rem;
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

/* Responsive Overrides */
@media (max-width: 1024px) {
  .app-container {
    grid-template-columns: 1fr;
  }
  
  aside {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }
  
  .kanban-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  header {
    flex-direction: column;
    gap: 1rem;
    align-items: stretch;
  }
  
  .controls-section {
    flex-direction: column;
    align-items: stretch;
  }
  
  .kanban-grid {
    grid-template-columns: 1fr;
  }
}