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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f5f7fa;
}

/* Color Variables */
:root {
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --secondary-color: #64748b;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;
  --background-color: #f5f7fa;
  --card-background: #ffffff;
  --border-color: #e2e8f0;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* Login Page Styles */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 20px;
}

.login-card {
  background: var(--card-background);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 400px;
  animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-header {
  text-align: center;
  margin-bottom: 2rem;
}

.login-header i {
  font-size: 3rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.login-header h1 {
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.login-header p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.login-form {
  margin-bottom: 2rem;
}

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

.input-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 500;
}

.input-group input,
.input-group select,
.input-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.login-btn {
  width: 100%;
  padding: 0.75rem;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

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

.demo-accounts {
  margin-bottom: 1.5rem;
}

.demo-accounts h3 {
  text-align: center;
  margin-bottom: 1rem;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.demo-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.demo-btn {
  padding: 0.75rem 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: white;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.8rem;
  flex: 1 1 auto;
  min-width: 0;
  text-align: center;
}

.demo-btn:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.demo-btn.admin:hover {
  border-color: var(--danger-color);
  color: var(--danger-color);
}

.demo-btn.manager:hover {
  border-color: var(--warning-color);
  color: var(--warning-color);
}

.demo-btn.member:hover {
  border-color: var(--success-color);
  color: var(--success-color);
}

.demo-btn small {
  font-size: 0.7rem;
  color: var(--text-secondary);
}

.demo-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

.demo-btn:disabled:hover {
  transform: none !important;
  box-shadow: none;
}

.signup-link {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

.signup-link a:hover {
  text-decoration: underline;
}

/* Dashboard Styles */
.navbar {
  background: var(--card-background);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.nav-brand i {
  color: var(--primary-color);
}

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

.user-info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.user-name {
  font-weight: 500;
  color: var(--text-primary);
}

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

.logout-btn {
  padding: 0.5rem 1rem;
  background: var(--danger-color);
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.3s;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logout-btn:hover {
  background: #dc2626;
}

/* Dashboard Layout */
.dashboard-container {
  display: flex;
  max-width: 1200px;
  margin: 0 auto;
  min-height: calc(100vh - 80px);
}

.sidebar {
  width: 250px;
  background: var(--card-background);
  border-right: 1px solid var(--border-color);
  padding: 1.5rem 0;
}

.sidebar-menu {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0 1rem;
}

.menu-item {
  width: 100%;
  padding: 0.75rem 1rem;
  background: none;
  border: none;
  border-radius: 8px;
  text-align: left;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

.menu-item.active {
  background: var(--primary-color);
  color: white;
}

.menu-item i {
  width: 20px;
  text-align: center;
}

/* Main Content */
.main-content {
  flex: 1;
  padding: 1.5rem;
  background: var(--background-color);
}

.content-section {
  display: none;
}

.content-section.active {
  display: block;
  animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.section-header h2 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-primary);
  font-weight: 600;
}

.task-filters {
  display: flex;
  gap: 0.5rem;
}

/* Buttons */
.btn {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary-color);
  color: white;
}

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

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

.btn-secondary:hover {
  background: #475569;
}

.btn-success {
  background: var(--success-color);
  color: white;
}

.btn-success:hover {
  background: #059669;
}

.btn-warning {
  background: var(--warning-color);
  color: white;
}

.btn-warning:hover {
  background: #d97706;
}

.btn-danger {
  background: var(--danger-color);
  color: white;
}

.btn-danger:hover {
  background: #dc2626;
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--card-background);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s;
  border: 1px solid var(--border-color);
}

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

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.project-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.project-status {
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.project-status.active {
  background: #dcfce7;
  color: #166534;
}

.project-status.completed {
  background: #dbeafe;
  color: #1e40af;
}

.project-status.on-hold {
  background: #fef3c7;
  color: #92400e;
}

.project-description {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  line-height: 1.5;
}

.project-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.project-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.project-actions .btn {
  font-size: 0.8rem;
  padding: 0.4rem 0.8rem;
}

/* Tasks Layout */
.tasks-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.task-column {
  background: var(--card-background);
  border-radius: 12px;
  padding: 1rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}

.task-column h3 {
  color: var(--text-primary);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.task-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 200px;
}

.task-card {
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  cursor: pointer;
  transition: all 0.3s;
}

.task-card:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
  background: white;
}

.task-title {
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.task-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.task-priority {
  padding: 0.2rem 0.5rem;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
}

.task-priority.high {
  background: #fee2e2;
  color: #dc2626;
}

.task-priority.medium {
  background: #fef3c7;
  color: #d97706;
}

.task-priority.low {
  background: #dcfce7;
  color: #059669;
}

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

/* Users Table */
.users-table-container {
  background: var(--card-background);
  border-radius: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.users-table {
  width: 100%;
  border-collapse: collapse;
}

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

.users-table th {
  background: #f8fafc;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.8rem;
}

.users-table tr:last-child td {
  border-bottom: none;
}

.user-role-badge {
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.user-role-badge.admin {
  background: #fee2e2;
  color: #dc2626;
}

.user-role-badge.manager {
  background: #fef3c7;
  color: #d97706;
}

.user-role-badge.member {
  background: #dcfce7;
  color: #059669;
}

.user-status {
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

.user-status.active {
  background: #dcfce7;
  color: #166534;
}

.user-status.pending {
  background: #fef3c7;
  color: #92400e;
}

/* Reports Section */
.reports-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.report-card {
  background: var(--card-background);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}

.report-card h3 {
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.progress-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.stat {
  text-align: center;
  padding: 1rem;
  background: #f8fafc;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

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

/* Modal Styles */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease-out;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--card-background);
  border-radius: 12px;
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  margin: 1rem;
  animation: slideInUp 0.3s ease-out;
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
  color: var(--text-primary);
  font-weight: 600;
}

.close-btn {
  background: none;
  border: none;
  font-size: 1.2rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 4px;
  transition: color 0.3s, background-color 0.3s;
}

.close-btn:hover {
  color: var(--text-primary);
  background: #f1f5f9;
}

.modal form {
  padding: 1.5rem;
}

.modal-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  margin-top: 1.5rem;
}

/* Project Detail Modal Styles */
.project-details {
  padding: 1.5rem;
}

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

.detail-group label {
  display: block;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
  font-size: 0.875rem;
}

.detail-group span,
.detail-group p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
}

.detail-group p {
  margin: 0;
  padding: 0.5rem 0;
}

.status-badge {
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: capitalize;
}

.status-badge.status-planning {
  background: #e0e7ff;
  color: #3730a3;
}

.status-badge.status-active {
  background: #dcfce7;
  color: #166534;
}

.status-badge.status-on-hold {
  background: #fef3c7;
  color: #92400e;
}

.status-badge.status-completed {
  background: #d1fae5;
  color: #065f46;
}

.status-badge.status-cancelled {
  background: #fee2e2;
  color: #991b1b;
}

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

.team-member {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem;
  background: #f8fafc;
  border-radius: 6px;
}

.member-name {
  font-weight: 500;
  color: var(--text-primary);
}

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

.progress-container {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.progress-bar {
  flex: 1;
  height: 8px;
  background: #e2e8f0;
  border-radius: 4px;
  overflow: hidden;
  margin: 15px;
}

.progress-fill {
  height: 100%;
  background: var(--success-color);
  transition: width 0.3s ease;
}

/* Message Container */
.message-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1100;
  max-width: 400px;
}

.message {
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 0.5rem;
  box-shadow: var(--shadow-lg);
  display: none;
  animation: slideInRight 0.3s ease-out;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.message.success {
  background: #dcfce7;
  color: #166534;
  border-left: 4px solid var(--success-color);
}

.message.error {
  background: #fee2e2;
  color: #dc2626;
  border-left: 4px solid var(--danger-color);
}

.message.info {
  background: #dbeafe;
  color: #1e40af;
  border-left: 4px solid var(--primary-color);
}

.message.warning {
  background: #fef3c7;
  color: #92400e;
  border-left: 4px solid var(--warning-color);
}

/* Role-based visibility */
.admin-only {
  display: none;
}

.manager-only {
  display: none;
}

.admin-manager-only {
  display: none;
}

.member-only {
  display: none;
}

/* Show content based on user role */
body.role-admin .admin-only,
body.role-admin .admin-manager-only {
  display: block;
}

body.role-admin .menu-item.admin-only,
body.role-admin .menu-item.admin-manager-only {
  display: flex;
}

body.role-manager .manager-only,
body.role-manager .admin-manager-only {
  display: block;
}

body.role-manager .menu-item.manager-only,
body.role-manager .menu-item.admin-manager-only {
  display: flex;
}

body.role-member .member-only {
  display: block;
}

body.role-member .menu-item.member-only {
  display: flex;
}

/* Elements visible to all authenticated users */
.all-users {
  display: block;
}

.menu-item.all-users {
  display: flex;
}

/* Responsive Design */
@media (max-width: 768px) {
  .dashboard-container {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    order: 2;
  }

  .main-content {
    order: 1;
  }

  .sidebar-menu {
    flex-direction: row;
    overflow-x: auto;
    padding: 1rem;
  }

  .menu-item {
    white-space: nowrap;
    min-width: 120px;
  }

  .nav-container {
    flex-direction: column;
    gap: 1rem;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .tasks-container {
    grid-template-columns: 1fr;
  }

  .demo-grid {
    flex-direction: column;
  }

  .demo-btn {
    min-width: 100%;
  }

  .progress-stats {
    grid-template-columns: 1fr;
  }

  .reports-grid {
    grid-template-columns: 1fr;
  }

  .task-filters {
    flex-direction: column;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  .login-card {
    padding: 1.5rem;
    margin: 1rem;
  }

  .main-content {
    padding: 1rem;
  }

  .modal-content {
    margin: 0.5rem;
  }

  .users-table-container {
    overflow-x: auto;
  }

  .users-table {
    min-width: 600px;
  }
}