/* ===== INSIGHTENGINE UI COMPONENTS ===== */

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-medium);
  line-height: 1;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

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

/* Button variants */
.btn-primary {
  background-color: var(--primary);
  color: white;
  border-color: var(--primary);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
  color: white;
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: var(--secondary-hover);
  border-color: var(--secondary-hover);
  color: white;
}

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

.btn-outline:hover:not(:disabled) {
  background-color: var(--primary);
  color: white;
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--surface-hover);
  color: var(--text-primary);
}

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

.btn-danger:hover:not(:disabled) {
  background-color: #DC2626;
  border-color: #DC2626;
  color: white;
}

/* Button sizes */
.btn-sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-base);
}

/* Loading state */
.btn-loading {
  color: transparent;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ===== FORM CONTROLS ===== */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-medium);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.form-label.required::after {
  content: ' *';
  color: var(--danger);
}

.form-control {
  display: block;
  width: 100%;
  padding: var(--space-3);
  font-size: var(--font-size-sm);
  line-height: var(--line-height);
  color: var(--text-primary);
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-control:disabled {
  background-color: var(--bg-tertiary);
  opacity: 0.6;
  cursor: not-allowed;
}

.form-control.is-invalid {
  border-color: var(--danger);
}

.form-control.is-invalid:focus {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-control.is-valid {
  border-color: var(--success);
}

.form-control.is-valid:focus {
  border-color: var(--success);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* Form feedback */
.invalid-feedback,
.valid-feedback {
  display: block;
  font-size: var(--font-size-xs);
  margin-top: var(--space-1);
}

.invalid-feedback {
  color: var(--danger);
}

.valid-feedback {
  color: var(--success);
}

/* Form help text */
.form-text {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

/* Textarea */
.form-control.textarea {
  resize: vertical;
  min-height: 80px;
}

/* Select */
.form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--space-3) center;
  background-repeat: no-repeat;
  background-size: 16px 12px;
  padding-right: 2.5rem;
}

/* Checkbox and Radio */
.form-check {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.form-check-input {
  width: 16px;
  height: 16px;
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: var(--surface);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.form-check-input:checked {
  background-color: var(--primary);
  border-color: var(--primary);
}

.form-check-input[type="radio"] {
  border-radius: 50%;
}

.form-check-label {
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  cursor: pointer;
  line-height: var(--line-height);
}

/* Toggle Switch */
.form-switch {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.form-switch-input {
  position: relative;
  width: 44px;
  height: 24px;
  background-color: var(--border);
  border-radius: 12px;
  cursor: pointer;
  transition: background-color var(--transition-fast);
  border: none;
  outline: none;
}

.form-switch-input:checked {
  background-color: var(--primary);
}

.form-switch-input::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background-color: white;
  border-radius: 50%;
  transition: transform var(--transition-fast);
}

.form-switch-input:checked::after {
  transform: translateX(20px);
}

/* ===== CARDS ===== */
.card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-fast);
}

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

.card-header {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-tertiary);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin: 0;
}

.card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin: var(--space-1) 0 0 0;
}

.card-body {
  padding: var(--space-6);
}

.card-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border);
  background-color: var(--bg-tertiary);
}

/* Card variants */
.card-interactive {
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

/* ===== BADGES ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-medium);
  line-height: 1;
  border-radius: var(--radius);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.badge-primary {
  background-color: var(--primary-light);
  color: var(--primary);
}

.badge-success {
  background-color: var(--success-light);
  color: var(--success);
}

.badge-warning {
  background-color: var(--warning-light);
  color: var(--warning);
}

.badge-danger {
  background-color: var(--danger-light);
  color: var(--danger);
}

.badge-info {
  background-color: var(--info-light);
  color: var(--info);
}

.badge-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
}

/* ===== ALERTS ===== */
.alert {
  padding: var(--space-4);
  border-radius: var(--radius);
  border: 1px solid transparent;
  margin-bottom: var(--space-4);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.alert-success {
  background-color: var(--success-light);
  border-color: var(--success);
  color: var(--success);
}

.alert-warning {
  background-color: var(--warning-light);
  border-color: var(--warning);
  color: var(--warning);
}

.alert-danger {
  background-color: var(--danger-light);
  border-color: var(--danger);
  color: var(--danger);
}

.alert-info {
  background-color: var(--info-light);
  border-color: var(--info);
  color: var(--info);
}

.alert-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.alert-content {
  flex: 1;
}

.alert-title {
  font-weight: var(--font-semibold);
  margin: 0 0 var(--space-1) 0;
}

.alert-message {
  margin: 0;
  font-size: var(--font-size-sm);
}

/* ===== MODALS ===== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.modal-overlay.show {
  opacity: 1;
  visibility: visible;
}

.modal {
  background-color: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform var(--transition-fast);
}

.modal-overlay.show .modal {
  transform: scale(1);
}

.modal-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: var(--font-size-xl);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--surface-hover);
  color: var(--text-primary);
}

.modal-body {
  padding: var(--space-6);
  overflow-y: auto;
}

.modal-footer {
  padding: var(--space-6);
  border-top: 1px solid var(--border);
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
}

/* ===== DROPDOWNS ===== */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
}

.dropdown.show .dropdown-menu,
.dropdown-menu.show {
  opacity: 1 !important;
  visibility: visible !important;
  transform: translateY(0) !important;
  display: block !important;
}

.dropdown-item {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: var(--text-primary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
}

.dropdown-item:hover {
  background-color: var(--surface-hover);
}

.dropdown-item:focus {
  background-color: var(--primary-light);
  color: var(--primary);
  outline: none;
}

.dropdown-divider {
  height: 1px;
  background-color: var(--border);
  margin: var(--space-2) 0;
}

/* ===== TABLES ===== */
.table-container {
  background-color: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.table th,
.table td {
  padding: var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.table th {
  background-color: var(--bg-tertiary);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  position: sticky;
  top: 0;
  z-index: 10;
}

.table tbody tr:hover {
  background-color: var(--surface-hover);
}

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

/* Empty state */
.table-empty {
  text-align: center;
  padding: var(--space-8);
  color: var(--text-muted);
}

.table-empty-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-4);
  opacity: 0.5;
}

/* ===== PAGINATION ===== */
.pagination {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  justify-content: center;
  margin: var(--space-6) 0;
}

.pagination-item {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
}

.pagination-item:hover {
background-color: var(--surface-hover);
border-color: var(--primary);
}

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

.pagination-item:disabled {
opacity: 0.5;
cursor: not-allowed;
pointer-events: none;
}

/* ===== LOADING STATES ===== */
.skeleton {
background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--surface-hover) 50%, var(--bg-tertiary) 75%);
background-size: 200% 100%;
animation: skeleton-loading 1.5s infinite;
border-radius: var(--radius);
}

@keyframes skeleton-loading {
0% { background-position: 200% 0; }
100% { background-position: -200% 0; }
}

.skeleton-text {
height: 1em;
margin-bottom: var(--space-2);
}

.skeleton-title {
height: 1.5em;
width: 60%;
margin-bottom: var(--space-4);
}

.skeleton-avatar {
width: 40px;
height: 40px;
border-radius: 50%;
}

/* ===== TOOLTIPS ===== */
.tooltip {
position: relative;
display: inline-block;
}

.tooltip-content {
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--text-primary);
  color: var(--text-inverse);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
  font-size: var(--font-size-xs);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: 1000;
}

.tooltip:hover .tooltip-content {
  opacity: 1;
  visibility: visible;
}

.tooltip-content::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--text-primary);
}

/* ===== PROGRESS BARS ===== */
.progress {
  width: 100%;
  height: 8px;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background-color: var(--primary);
  transition: width var(--transition);
  border-radius: var(--radius);
}

.progress-bar.success {
  background-color: var(--success);
}

.progress-bar.warning {
  background-color: var(--warning);
}

.progress-bar.danger {
  background-color: var(--danger);
}

/* ===== CHAT INTERFACE ===== */
.chat-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  background-color: var(--background);
}

.chat-header {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: var(--space-4);
  flex-shrink: 0;
}

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

.chat-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
}

.chat-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-top: var(--space-1);
}

.chat-progress {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.chat-progress-bar {
  width: 80px;
  height: 4px;
  background-color: var(--surface-hover);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.chat-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: var(--radius-full);
  transition: width var(--transition);
  width: 0%;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.chat-message {
  display: flex;
  gap: var(--space-3);
  max-width: 80%;
  animation: message-appear 0.3s ease-out;
}

.chat-message.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.chat-message.assistant {
  align-self: flex-start;
}

.chat-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--font-size-sm);
  font-weight: var(--font-semibold);
  flex-shrink: 0;
}

.chat-avatar.user {
  background: linear-gradient(135deg, var(--success), var(--info));
}

.chat-bubble {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  position: relative;
  word-wrap: break-word;
}

.chat-message.user .chat-bubble {
  background-color: var(--primary);
  color: white;
  border-color: var(--primary);
}

.chat-message.assistant .chat-bubble {
  background-color: var(--surface);
  color: var(--text-primary);
}

.chat-bubble::before {
  content: '';
  position: absolute;
  width: 0;
  height: 0;
  border: 6px solid transparent;
}

.chat-message.assistant .chat-bubble::before {
  left: -12px;
  top: 12px;
  border-right-color: var(--border);
}

.chat-message.user .chat-bubble::before {
  right: -12px;
  top: 12px;
  border-left-color: var(--primary);
}

.chat-timestamp {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-top: var(--space-1);
  text-align: center;
}

.chat-message.user .chat-timestamp {
  text-align: right;
}

.chat-message.assistant .chat-timestamp {
  text-align: left;
}

.chat-quick-replies {
  padding: 0 var(--space-4) var(--space-4);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.chat-quick-reply {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.chat-quick-reply:hover {
  background-color: var(--primary);
  color: white;
  border-color: var(--primary);
  transform: translateY(-1px);
}

.chat-input-container {
  background-color: var(--surface);
  border-top: 1px solid var(--border);
  padding: var(--space-4);
  flex-shrink: 0;
}

.chat-input-wrapper {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
  background-color: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  transition: border-color var(--transition-fast);
}

.chat-input-wrapper:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-alpha);
}

.chat-input {
  flex: 1;
  border: none;
  background: none;
  resize: none;
  outline: none;
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--text-primary);
  min-height: 20px;
  max-height: 120px;
  padding: var(--space-2) 0;
}

.chat-input::placeholder {
  color: var(--text-muted);
}

.chat-input-actions {
  display: flex;
  gap: var(--space-1);
  align-items: center;
}

.chat-file-input {
  position: relative;
  overflow: hidden;
  display: inline-block;
}

.chat-file-input input[type="file"] {
  position: absolute;
  left: -9999px;
}

.chat-file-button {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.chat-file-button:hover {
  color: var(--primary);
  background-color: var(--surface-hover);
}

.chat-send-button {
  background-color: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius);
  padding: var(--space-2);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
}

.chat-send-button:hover:not(:disabled) {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}

.chat-send-button:disabled {
  background-color: var(--surface-hover);
  color: var(--text-muted);
  cursor: not-allowed;
}

.chat-typing-indicator {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  font-style: italic;
}

.chat-typing-dots {
  display: flex;
  gap: 2px;
}

.chat-typing-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--text-muted);
  animation: typing-bounce 1.4s infinite ease-in-out;
}

.chat-typing-dot:nth-child(1) { animation-delay: -0.32s; }
.chat-typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes message-appear {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes typing-bounce {
  0%, 80%, 100% {
    transform: scale(0);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Chat responsive design */
@media (max-width: 768px) {
  .chat-message {
    max-width: 90%;
  }
  
  .chat-messages {
    padding: var(--space-3);
    gap: var(--space-3);
  }
  
  .chat-input-container {
    padding: var(--space-3);
  }
  
  .chat-header {
    padding: var(--space-3);
  }
}

/* Dark mode adjustments for chat */
[data-theme="dark"] .chat-bubble::before {
  border-right-color: var(--border);
}

[data-theme="dark"] .chat-message.user .chat-bubble::before {
  border-left-color: var(--primary);
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .chat-bubble {
    border-width: 2px;
  }
  
  .chat-input-wrapper {
    border-width: 2px;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .chat-message {
    animation: none;
  }
  
  .chat-quick-reply:hover {
    transform: none;
  }
  
  .chat-send-button:hover:not(:disabled) {
    transform: none;
  }
  
  .chat-typing-dot {
    animation: none;
  }
}