/* Modern CSS for Enhanced Collaboration Platform */

:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --secondary: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --success: #22c55e;
  --info: #3b82f6;
  --dark: #1f2937;
  --light: #f8fafc;
  --border: #e2e8f0;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --gradient-danger: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--dark);
  background: var(--light);
}

/* Login & Signup Styles */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient);
  padding: 20px;
}

.auth-card {
  background: white;
  padding: 40px;
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 450px;
  text-align: center;
  backdrop-filter: blur(10px);
}

.auth-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 30px;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.form-group {
  margin-bottom: 20px;
  text-align: left;
}

.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--dark);
  font-size: 0.9rem;
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--border);
  border-radius: 12px;
  font-size: 16px;
  transition: all 0.3s ease;
  background: white;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
  transform: translateY(-1px);
}

.form-select {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--border);
  border-radius: 12px;
  font-size: 16px;
  background: white;
  cursor: pointer;
}

.btn {
  padding: 14px 24px;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
}

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

.btn:active {
  transform: translateY(0);
}

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

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

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

.btn-secondary {
  background: #6b7280;
  color: white;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 18px;
}

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

/* Header Styles */
.header {
  background: white;
  padding: 16px 32px;
  box-shadow: var(--shadow);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-title {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-info {
  text-align: right;
}

.user-name {
  font-weight: 600;
  color: var(--dark);
}

.user-role {
  font-size: 0.8rem;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 20px;
  background: rgba(34, 197, 94, 0.1);
  color: var(--success);
  font-size: 0.9rem;
  font-weight: 500;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Notification Styles */
.notifications {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.notification {
  padding: 16px 20px;
  border-radius: 12px;
  color: white;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  max-width: 350px;
  animation: slideIn 0.3s ease;
  backdrop-filter: blur(10px);
}

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

.notification.success { background: var(--gradient-success); }
.notification.error { background: var(--gradient-danger); }
.notification.warning { background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%); }
.notification.info { background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%); }

/* Invitation Banner */
.invitation-banner {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: white;
  padding: 20px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  animation: slideDown 0.5s ease;
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.invitation-content h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.invitation-actions {
  display: flex;
  gap: 12px;
}

.invitation-item {
  background: rgba(255, 255, 255, 0.1);
  padding: 12px 16px;
  border-radius: 12px;
  margin: 8px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: blur(10px);
}

/* Admin Panel */
.admin-panel {
  background: white;
  margin: 24px 32px;
  padding: 32px;
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.admin-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--dark);
}

.user-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.user-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border-radius: 16px;
  border: 2px solid var(--border);
  transition: all 0.3s ease;
}

.user-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: var(--primary);
}

.user-info-card {
  flex: 1;
}

.user-name-card {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--dark);
  margin-bottom: 4px;
}

.user-email {
  color: #6b7280;
  font-size: 0.9rem;
  margin-bottom: 4px;
}

.user-role-badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.role-admin { background: #fef3c7; color: #d97706; }
.role-super_admin { background: #fce7f3; color: #be185d; }
.role-editor { background: #dbeafe; color: #2563eb; }

/* Main Layout */
.main-container {
  display: flex;
  gap: 24px;
  padding: 24px 32px;
  min-height: calc(100vh - 80px);
}

/* Sidebar */
.sidebar {
  width: 350px;
  background: white;
  border-radius: 20px;
  padding: 24px;
  box-shadow: var(--shadow);
  height: fit-content;
  position: sticky;
  top: 104px;
}

.sidebar-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--dark);
}

.project-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.project-card {
  padding: 20px;
  border: 2px solid var(--border);
  border-radius: 16px;
  cursor: pointer;
  transition: all 0.3s ease;
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
}

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

.project-card.active {
  border-color: var(--primary);
  background: linear-gradient(135deg, #eef2ff 0%, #e0e7ff 100%);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.project-name {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--dark);
  margin-bottom: 8px;
}

.project-description {
  color: #6b7280;
  font-size: 0.9rem;
  margin-bottom: 12px;
  line-height: 1.5;
}

.project-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: #9ca3af;
}

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: #6b7280;
}

.empty-state h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

/* Editor */
.editor-container {
  flex: 1;
  background: white;
  border-radius: 20px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.editor-header {
  padding: 24px 32px;
  border-bottom: 2px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
}

.editor-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--dark);
}

.editor-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.9rem;
  color: #6b7280;
}

.collaborator-count {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary);
  border-radius: 20px;
  font-weight: 500;
}

/* Toolbar */
.editor-toolbar {
  padding: 16px 32px;
  border-bottom: 2px solid var(--border);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  background: #fafbfc;
}

.toolbar-btn {
  padding: 10px 14px;
  border: 2px solid var(--border);
  background: white;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.toolbar-btn:hover {
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.05);
  transform: translateY(-1px);
}

.toolbar-btn:active {
  transform: translateY(0);
  background: rgba(99, 102, 241, 0.1);
}

.toolbar-separator {
  width: 2px;
  background: var(--border);
  margin: 0 8px;
}

/* Editor Content */
.editor-content {
  flex: 1;
  padding: 32px;
  min-height: 500px;
  outline: none;
  font-size: 16px;
  line-height: 1.8;
  background: linear-gradient(135deg, #ffffff 0%, #fafbfc 100%);
  font-family: 'Inter', sans-serif;
}

.editor-content h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--dark);
  line-height: 1.2;
}

.editor-content h2 {
  font-size: 2rem;
  font-weight: 600;
  margin: 32px 0 16px 0;
  color: var(--dark);
  line-height: 1.3;
}

.editor-content p {
  margin-bottom: 16px;
  color: #374151;
}

.editor-content ul, .editor-content ol {
  margin: 16px 0;
  padding-left: 24px;
}

.editor-content li {
  margin-bottom: 8px;
  color: #374151;
}

.editor-content a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

.editor-content a:hover {
  text-decoration: underline;
}

/* Collaborators Bar */
.collaborators-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 32px;
  border-top: 2px solid var(--border);
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  min-height: 80px;
}

.collaborators-label {
  font-weight: 600;
  color: var(--dark);
  margin-right: 8px;
}

.collaborator-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 1rem;
  border: 3px solid white;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
}

.collaborator-avatar:hover {
  transform: scale(1.1);
  z-index: 10;
}

.collaborator-tooltip {
  position: absolute;
  bottom: 120%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--dark);
  color: white;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.8rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.collaborator-avatar:hover .collaborator-tooltip {
  opacity: 1;
}

.empty-collaborators {
  color: #9ca3af;
  font-style: italic;
  font-size: 0.9rem;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.modal {
  background: white;
  padding: 32px;
  border-radius: 20px;
  width: 90%;
  max-width: 600px;
  box-shadow: var(--shadow-lg);
  animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
  from {
    transform: scale(0.9) translateY(-20px);
    opacity: 0;
  }
  to {
    transform: scale(1) translateY(0);
    opacity: 1;
  }
}

.modal-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--dark);
}

.modal-actions {
  display: flex;
  gap: 16px;
  justify-content: flex-end;
  margin-top: 32px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .main-container {
    flex-direction: column;
    padding: 16px;
    gap: 16px;
  }
  
  .sidebar {
    width: 100%;
    position: static;
  }
  
  .header {
    padding: 12px 16px;
  }
  
  .header-actions {
    gap: 8px;
  }
  
  .btn {
    padding: 10px 16px;
    font-size: 14px;
  }
  
  .auth-card {
    padding: 24px;
    margin: 16px;
  }
  
  .user-grid {
    grid-template-columns: 1fr;
  }
  
  .editor-toolbar {
    padding: 12px 16px;
  }
  
  .editor-content {
    padding: 20px;
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --dark: #f8fafc;
    --light: #1f2937;
    --border: #374151;
  }
  
  body {
    background: #111827;
    color: #f8fafc;
  }
  
  .form-input, .form-select {
    background: #374151;
    border-color: #4b5563;
    color: #f8fafc;
  }
  
  .editor-content {
    background: #374151;
    color: #f8fafc;
  }
}