/* Advanced Chat System - Main Styles */

.advanced-chat-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 9999;
  font-family: var(--edublink-font-primary);
}

/* Global Chat Button */
.advanced-chat-global-btn {
  width: 60px;
  height: 60px;
  background: var(--edublink-gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--edublink-shadow-dark);
  transition: var(--edublink-transition);
  color: var(--edublink-color-white);
}

.advanced-chat-global-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--edublink-shadow-darker);
}

.advanced-chat-global-btn .dashicons {
  font-size: 24px;
  width: 24px;
  height: 24px;
}

/* Chat Modal */
.advanced-chat-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999999;
  display: none;
  align-items: center;
  justify-content: center;
}

.advanced-chat-modal.active {
  display: flex;
}

.advanced-chat-modal-content {
  background: var(--edublink-color-white);
  border-radius: var(--edublink-radius-big);
  box-shadow: var(--edublink-shadow-darker2);
  max-width: 600px;
  width: 90%;
  height: 80vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.advanced-chat-modal-header {
  padding: 20px 25px;
  border-bottom: 1px solid var(--edublink-color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--edublink-gradient-primary);
  color: var(--edublink-color-white);
}

.advanced-chat-modal-header h3 {
  margin: 0;
  font-size: var(--edublink-h5);
  font-weight: var(--edublink-p-semi-bold);
}

.advanced-chat-modal-close {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--edublink-color-white);
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--edublink-transition);
}

.advanced-chat-modal-close:hover {
  opacity: 0.8;
}

.advanced-chat-modal-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.advanced-chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  background: var(--edublink-color-lighten01);
}

/* Individual Messages */
.advanced-chat-message {
  margin-bottom: 15px;
  padding: 12px 16px;
  background: var(--edublink-color-white);
  border-radius: 18px;
  box-shadow: var(--edublink-shadow-darkest);
  transition: var(--edublink-transition);
  max-width: 70%;
  width: fit-content;
  word-wrap: break-word;
  /* Default: incoming messages on left */
  margin-left: 0;
  margin-right: auto;
}

.advanced-chat-message:hover {
  box-shadow: var(--edublink-shadow-dark);
}

.advanced-chat-message.own {
  background: var(--edublink-color-primary);
  color: var(--edublink-color-white);
  border-radius: 18px 18px 4px 18px;
  /* Own messages on right */
  margin-left: auto;
  margin-right: 0;
}

/* Incoming messages styling */
.advanced-chat-message:not(.own) {
  border-radius: 4px 18px 18px 18px;
}

.advanced-chat-message-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.advanced-chat-message-user {
  display: flex;
  align-items: center;
  gap: 10px;
}

.advanced-chat-user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--edublink-color-border);
}

.advanced-chat-message-author {
  font-weight: var(--edublink-p-semi-bold);
  font-size: var(--edublink-font-size-b3);
}

.advanced-chat-message-time {
  color: var(--edublink-color-body);
  font-size: var(--edublink-font-size-b4);
  opacity: 0.8;
}

.advanced-chat-message-text {
  color: var(--edublink-color-heading);
  font-size: var(--edublink-font-size-b3);
  line-height: var(--edublink-line-height-b3);
  word-wrap: break-word;
  white-space: pre-wrap;
}

/* Own message text styling */
.advanced-chat-message.own .advanced-chat-message-author {
  color: var(--edublink-color-white);
}

.advanced-chat-message.own .advanced-chat-message-time {
  color: rgba(255, 255, 255, 0.8);
}

.advanced-chat-message.own .advanced-chat-message-text {
  color: var(--edublink-color-white);
}

.advanced-chat-message-attachment {
  margin-top: 10px;
  padding: 10px;
  background: var(--edublink-color-shade);
  border-radius: var(--edublink-radius-small);
  border-left: 3px solid var(--edublink-color-primary);
}

.advanced-chat-message-attachment a {
  color: var(--edublink-color-primary);
  text-decoration: none;
  font-weight: var(--edublink-p-medium);
  font-size: var(--edublink-font-size-b4);
}

.advanced-chat-message-attachment a:hover {
  text-decoration: underline;
}

.advanced-chat-form {
  padding: 20px;
  border-top: 1px solid var(--edublink-color-border);
  background: var(--edublink-color-white);
}

.advanced-chat-input-area {
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.advanced-chat-input {
  flex: 1;
  border: 1px solid var(--edublink-color-border);
  border-radius: var(--edublink-radius);
  padding: 12px;
  font-family: var(--edublink-font-primary);
  font-size: var(--edublink-font-size-b3);
  resize: vertical;
  min-height: 60px;
  color: var(--edublink-color-heading);
}

.advanced-chat-input:focus {
  outline: none;
  border-color: var(--edublink-color-primary);
  box-shadow: 0 0 0 3px rgba(5, 60, 130, 0.1);
}

.advanced-chat-actions {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.advanced-chat-file-btn {
  background: var(--edublink-color-extra09);
  color: var(--edublink-color-white);
  border: none;
  border-radius: var(--edublink-radius-small);
  padding: 8px 12px;
  cursor: pointer;
  font-size: var(--edublink-font-size-b4);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: var(--edublink-transition);
  font-family: var(--edublink-font-primary);
}

.advanced-chat-file-btn:hover {
  background: var(--edublink-color-extra10);
}

.advanced-chat-send-btn {
  background: var(--edublink-gradient-primary);
  color: var(--edublink-color-white);
  border: none;
  border-radius: var(--edublink-radius-small);
  padding: 12px 16px;
  cursor: pointer;
  font-weight: var(--edublink-p-medium);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: var(--edublink-transition);
  font-family: var(--edublink-font-primary);
}

.advanced-chat-send-btn:hover {
  opacity: 0.9;
}

.advanced-chat-send-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Chat Buttons */
.advanced-chat-btn {
  background: var(--edublink-gradient-primary);
  color: var(--edublink-color-white);
  border: none;
  border-radius: var(--edublink-radius);
  padding: 12px 20px;
  cursor: pointer;
  font-weight: var(--edublink-p-medium);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--edublink-transition);
  text-decoration: none;
  font-size: var(--edublink-font-size-b3);
  font-family: var(--edublink-font-primary);
}

.advanced-chat-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--edublink-shadow-dark);
  color: var(--edublink-color-white);
  text-decoration: none;
}

.advanced-chat-btn i {
  font-size: 16px;
}

/* Global Chat Button */
.global-chat-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 9999;
  border-radius: 50px;
  box-shadow: var(--edublink-shadow-dark);
}

/* Course Chat Buttons */
.advanced-chat-course-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
}

.advanced-chat-group-btn {
  background: linear-gradient(
    135deg,
    var(--edublink-color-extra01) 0%,
    var(--edublink-color-extra06) 100%
  );
}

.advanced-chat-private-btn {
  background: linear-gradient(
    135deg,
    var(--edublink-color-extra03) 0%,
    var(--edublink-color-secondary) 100%
  );
}

/* File Preview */
.advanced-chat-file-preview {
  background: var(--edublink-color-shade);
  padding: 10px;
  border-radius: var(--edublink-radius-small);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.advanced-chat-file-info {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.advanced-chat-remove-file {
  background: var(--edublink-color-textSecondary);
  color: var(--edublink-color-white);
  border: none;
  border-radius: var(--edublink-radius-small);
  padding: 4px 8px;
  cursor: pointer;
  font-size: var(--edublink-font-size-b4);
  transition: var(--edublink-transition);
}

.advanced-chat-remove-file:hover {
  opacity: 0.8;
}

/* Loading and Empty States */
.advanced-chat-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px;
  color: var(--edublink-color-body);
}

.advanced-chat-loading .spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--edublink-color-shade);
  border-top: 4px solid var(--edublink-color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 16px;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

.advanced-chat-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px;
  color: var(--edublink-color-body);
  text-align: center;
}

.advanced-chat-empty i {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.advanced-chat-empty h4 {
  margin: 0 0 8px 0;
  font-size: var(--edublink-h5);
  font-weight: var(--edublink-p-semi-bold);
  color: var(--edublink-color-heading);
}

.advanced-chat-empty p {
  margin: 0;
  font-size: var(--edublink-font-size-b3);
  opacity: 0.8;
}

/* Error and Success Messages */
.advanced-chat-error {
  background: var(--edublink-color-lighten03);
  color: var(--edublink-color-textSecondary);
  padding: 12px;
  border-radius: var(--edublink-radius-small);
  margin-bottom: 10px;
  border-left: 4px solid var(--edublink-color-textSecondary);
}

.advanced-chat-success {
  background: var(--edublink-color-lighten02);
  color: var(--edublink-color-extra01);
  padding: 12px;
  border-radius: var(--edublink-radius-small);
  margin-bottom: 10px;
  border-left: 4px solid var(--edublink-color-extra01);
}

/* File Upload Progress */
.advanced-chat-upload-progress {
  background: var(--edublink-color-border);
  border-radius: var(--edublink-radius);
  height: 4px;
  margin: 10px 0;
  overflow: hidden;
}

.advanced-chat-upload-progress-bar {
  height: 100%;
  background: var(--edublink-gradient-primary);
  transition: width var(--edublink-transition);
}

/* Responsive Design */
@media (max-width: 768px) {
  .advanced-chat-modal-content {
    width: 95%;
    height: 90vh;
  }

  .advanced-chat-input-area {
    flex-direction: column;
  }

  .advanced-chat-actions {
    flex-direction: row;
    justify-content: space-between;
  }

  .advanced-chat-btn {
    padding: 10px 16px;
    font-size: 13px;
  }
}

/* Animation Classes */
.advanced-chat-fade-in {
  animation: fadeIn 0.3s ease;
}

.advanced-chat-slide-up {
  animation: slideUp 0.3s ease;
}

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

@keyframes slideUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Typing Indicator */
.advanced-chat-typing {
  padding: 10px 20px;
  color: var(--edublink-color-body);
  font-style: italic;
  font-size: var(--edublink-font-size-b4);
}

.advanced-chat-typing-dots {
  display: inline-block;
  animation: typingDots 1.4s infinite;
}

@keyframes typingDots {
  0%,
  20% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}