/* Variables & Design Tokens */
:root {
  --font-primary: 'Outfit', 'Sarabun', sans-serif;
  
  /* Color Palette - Modern Clean Pastel */
  --bg-app: #f4f6f9;
  --bg-sidebar: #ffffff;
  --bg-card: #ffffff;
  
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-inverse: #ffffff;
  
  --border-light: #e2e8f0;
  
  /* Brand colors */
  --color-primary: #6366f1; /* Indigo */
  --color-primary-light: #e0e7ff;
  --color-primary-hover: #4f46e5;
  
  /* Pastel status colors */
  --todo-bg: #eff6ff;       /* Soft Blue */
  --todo-border: #bfdbfe;
  --todo-text: #1e40af;
  --todo-accent: #3b82f6;

  --progress-bg: #fffbeb;   /* Soft Amber */
  --progress-border: #fde68a;
  --progress-text: #854d0e;
  --progress-accent: #d97706;

  --done-bg: #f0fdf4;       /* Soft Green */
  --done-border: #bbf7d0;
  --done-text: #166534;
  --done-accent: #16a34a;

  --overdue-bg: #fef2f2;    /* Soft Red */
  --overdue-border: #fecaca;
  --overdue-text: #991b1b;
  --overdue-accent: #dc2626;
  
  /* System effects */
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.08), 0 2px 6px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 12px 24px -4px rgba(0, 0, 0, 0.08), 0 4px 12px -2px rgba(0, 0, 0, 0.04);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  
  --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-app);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Typography elements */
h1, h2, h3, h4 {
  font-weight: 600;
  color: var(--text-main);
}

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

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Helper Utilities */
.hidden {
  display: none !important;
}

.text-danger {
  color: var(--overdue-accent);
}

/* App Header Layout */
.app-header {
  height: 70px;
  background-color: #ffffff;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-sm);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-icon i {
  width: 24px;
  height: 24px;
}

.logo-text h1 {
  font-size: 18px;
  line-height: 1.2;
}

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

.header-right {
  display: flex;
  align-items: center;
}

.role-selector-container {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: #f1f5f9;
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--border-light);
}

.role-selector-container label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.role-selector-container label i {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
}

.role-select {
  background: transparent;
  border: none;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  outline: none;
  font-size: 14px;
  padding-right: 8px;
}

/* Layout App Container */
.app-container {
  display: flex;
  flex: 1;
  height: calc(100vh - 70px);
}

/* Sidebar Layout */
.app-sidebar {
  width: 260px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  flex-shrink: 0;
}

.user-profile-card {
  background-color: #f8fafc;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
}

.user-avatar {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 20px;
  color: var(--text-inverse);
  box-shadow: var(--shadow-sm);
  background-color: var(--color-primary);
}

.user-info h3 {
  font-size: 15px;
  margin-bottom: 2px;
}

.user-info span {
  font-size: 11px;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 600;
  text-transform: uppercase;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.nav-title {
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 700;
  letter-spacing: 0.5px;
  margin: 12px 8px 6px 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-muted);
  font-weight: 500;
  transition: var(--transition-smooth);
}

.nav-item i {
  width: 18px;
  height: 18px;
}

.nav-item:hover {
  background-color: #f1f5f9;
  color: var(--text-main);
}

.nav-item.active {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 600;
}

.sidebar-footer {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
  padding-top: 16px;
  border-top: 1px solid var(--border-light);
}

/* App Main Content Area */
.app-content {
  flex: 1;
  overflow-y: auto;
  padding: 32px;
  position: relative;
}

/* View Header wrapper */
.view-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
}

.view-header-title h2 {
  font-size: 24px;
  margin-bottom: 4px;
}

.view-header-title p {
  color: var(--text-muted);
  font-size: 14px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition-smooth);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--text-inverse);
}
.btn-primary:hover {
  background-color: var(--color-primary-hover);
  box-shadow: 0 4px 10px rgba(99, 102, 241, 0.2);
}

.btn-secondary {
  background-color: #ffffff;
  border-color: var(--border-light);
  color: var(--text-main);
}
.btn-secondary:hover {
  background-color: #f8fafc;
  border-color: #cbd5e1;
}

.btn-icon-only {
  width: 32px;
  height: 32px;
  padding: 0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #ffffff;
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-smooth);
}
.btn-icon-only:hover {
  color: var(--text-main);
  background-color: #f1f5f9;
}

/* KANBAN BOARD VIEW */
.kanban-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: start;
}

.kanban-column {
  background-color: #f1f5f9;
  border-radius: var(--radius-lg);
  padding: 16px;
  min-height: calc(100vh - 220px);
  display: flex;
  flex-direction: column;
  gap: 14px;
  border: 2px dashed transparent;
  transition: var(--transition-smooth);
}

.kanban-column.drag-over {
  border-color: var(--color-primary);
  background-color: #e0e7ff;
}

.column-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 8px;
}

.column-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
}

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

.col-todo .status-dot { background-color: var(--todo-accent); }
.col-progress .status-dot { background-color: var(--progress-accent); }
.col-done .status-dot { background-color: var(--done-accent); }

.col-todo .column-title { color: var(--todo-text); }
.col-progress .column-title { color: var(--progress-text); }
.col-done .column-title { color: var(--done-text); }

.task-count {
  font-size: 12px;
  font-weight: 600;
  background-color: rgba(0, 0, 0, 0.05);
  padding: 2px 8px;
  border-radius: 10px;
  color: var(--text-muted);
}

.tasks-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  min-height: 100px;
}

/* TASK CARD COMPONENT */
.task-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  cursor: grab;
  user-select: none;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

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

.task-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.task-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.task-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.3;
}

.task-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.4;
  word-break: break-word;
  white-space: pre-line;
}

.task-dates {
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-top: 1px solid #f1f5f9;
  padding-top: 8px;
  font-size: 12px;
  color: var(--text-muted);
}

.date-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.date-item i {
  width: 14px;
  height: 14px;
}

/* Task card actions and avatars */
.task-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 4px;
}

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

.avatar-sm {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-inverse);
}

.assignee-name {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
}

.task-card-actions {
  display: flex;
  gap: 4px;
}

.btn-card-action {
  width: 26px;
  height: 26px;
  border-radius: 4px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.btn-card-action:hover {
  background-color: #f1f5f9;
  color: var(--text-main);
}

.btn-card-action.btn-delete:hover {
  background-color: #fee2e2;
  color: var(--overdue-accent);
}

/* Overdue specific styling */
.task-card.overdue {
  background-color: var(--overdue-bg);
  border-color: var(--overdue-border);
}

.task-card.overdue .task-title {
  color: var(--overdue-text);
}

.task-card.overdue .date-item.deadline {
  color: var(--overdue-accent);
  font-weight: 600;
}

.task-card.overdue .overdue-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background-color: var(--overdue-accent);
  color: var(--text-inverse);
  font-size: 10px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
  margin-top: 4px;
  width: fit-content;
}

.task-card.overdue .overdue-badge i {
  width: 10px;
  height: 10px;
}

/* LEADER DASHBOARD VIEW */
.leader-dashboard {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

/* Dashboard Statistics Row */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-card {
  background-color: #ffffff;
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition-smooth);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-info h4 {
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.stat-number {
  font-size: 28px;
  font-weight: 700;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

/* Custom styles for statistics types */
.stat-total .stat-icon { background-color: var(--color-primary-light); color: var(--color-primary); }
.stat-todo-cnt .stat-icon { background-color: var(--todo-bg); color: var(--todo-accent); }
.stat-progress-cnt .stat-icon { background-color: var(--progress-bg); color: var(--progress-accent); }
.stat-done-cnt .stat-icon { background-color: var(--done-bg); color: var(--done-accent); }
.stat-overdue-cnt { border-color: var(--overdue-border); }
.stat-overdue-cnt .stat-icon { background-color: var(--overdue-bg); color: var(--overdue-accent); }
.stat-overdue-cnt .stat-number { color: var(--overdue-text); }

/* Dashboard Sections Layout */
.dashboard-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  align-items: start;
}

/* Sections containers */
.dashboard-card {
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.dashboard-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.dashboard-card-header h3 {
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.dashboard-card-header h3 i {
  color: var(--color-primary);
  width: 18px;
  height: 18px;
}

/* Team Workload Lists */
.workload-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.workload-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

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

.workload-user {
  display: flex;
  align-items: center;
  gap: 8px;
}

.workload-user span {
  font-size: 13px;
  font-weight: 600;
}

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

.workload-bar-container {
  height: 10px;
  background-color: #f1f5f9;
  border-radius: 5px;
  overflow: hidden;
  position: relative;
  display: flex;
}

.workload-bar-segment {
  height: 100%;
  transition: width 0.4s ease;
}

.workload-bar-todo { background-color: var(--todo-accent); }
.workload-bar-progress { background-color: var(--progress-accent); }
.workload-bar-done { background-color: var(--done-accent); }

/* Workload Legend */
.workload-legend {
  display: flex;
  gap: 16px;
  margin-top: 16px;
  font-size: 11px;
  justify-content: flex-end;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
}

.legend-color {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

/* Global Tasks List in Dashboard */
.global-tasks-filters {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}

.filter-select {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  background-color: #f8fafc;
  outline: none;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
  transition: var(--transition-smooth);
}
.filter-select:hover {
  border-color: #cbd5e1;
}

.global-tasks-table-wrapper {
  overflow-x: auto;
}

.global-tasks-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.global-tasks-table th {
  padding: 10px 12px;
  border-bottom: 2px solid var(--border-light);
  color: var(--text-muted);
  font-weight: 600;
}

.global-tasks-table td {
  padding: 12px;
  border-bottom: 1px solid var(--border-light);
  vertical-align: middle;
}

.global-tasks-table tr:hover {
  background-color: #f8fafc;
}

/* Table badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
}

.badge-todo { background-color: var(--todo-bg); color: var(--todo-text); }
.badge-progress { background-color: var(--progress-bg); color: var(--progress-text); }
.badge-done { background-color: var(--done-bg); color: var(--done-text); }
.badge-overdue { background-color: var(--overdue-bg); color: var(--overdue-accent); font-weight: 700; border: 1px solid var(--overdue-border); }

/* MODAL STYLING */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.2s ease;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
}

.modal-content {
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  width: 500px;
  max-width: 90%;
  position: relative;
  z-index: 1001;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
  overflow: hidden;
  animation: modalScaleUp 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modalScaleUp {
  from {
    transform: scale(0.95);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-light);
  background-color: #f8fafc;
}

.modal-header h2 {
  font-size: 18px;
}

.btn-close {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  transition: var(--transition-smooth);
}
.btn-close:hover {
  background-color: #cbd5e1;
  color: var(--text-main);
}

.btn-close i {
  width: 18px;
  height: 18px;
}

/* Modal Form styling */
.task-form {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
}

.form-group label .required {
  color: var(--overdue-accent);
}

.form-group input[type="text"],
.form-group textarea,
.form-group select,
.form-group input[type="date"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  outline: none;
  background-color: #f8fafc;
  color: var(--text-main);
  transition: var(--transition-smooth);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-primary);
  background-color: #ffffff;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 10px;
  border-top: 1px solid var(--border-light);
  padding-top: 18px;
}

/* RESPONSIVE LAYOUT */
@media (max-width: 1024px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .app-container {
    flex-direction: column;
    height: auto;
  }
  .app-sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border-light);
    padding: 16px;
  }
  .kanban-board {
    grid-template-columns: 1fr;
  }
  .app-content {
    padding: 16px;
  }
  .stats-row {
    grid-template-columns: 1fr;
  }
}