/**
 * Chat Bot Styling
 * Floating chat bubble and modal window styles
 * Mobile responsive with accessibility features
 * Color scheme: Purple (#9032ed)
 */

/* Chat Bubble Container */
.chat-bubble-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 99999;
  font-family: inherit;
}

/* Chat Bubble Toggle Button */
.chat-bubble-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #9032ed;
  color: white;
  border: 2px solid white;
  cursor: pointer;
  font-size: 1.5rem;
  box-shadow: 0 4px 12px rgba(144, 50, 237, 0.3);
  transition: all 0.3s ease;
  min-height: 44px;
  min-width: 44px;
  padding: 0;
}

.chat-bubble-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 16px rgba(144, 50, 237, 0.4);
}

.chat-bubble-btn:focus {
  outline: 3px solid #9032ed;
  outline-offset: 2px;
}

.chat-bubble-btn:active {
  transform: scale(0.95);
}

.chat-bubble-text {
  display: none;
  font-size: 0.75rem;
  font-weight: 600;
  position: absolute;
  bottom: -2rem;
  white-space: nowrap;
}

.chat-bubble-btn:hover .chat-bubble-text {
  display: block;
}

/* Chat Window */
.chat-window {
  position: absolute;
  bottom: 5rem;
  right: 1.5rem;
  width: 400px;
  height: 600px;
  background: white;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: slideUp 0.3s ease;
  z-index: 99999;
  box-sizing: border-box;
}

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

/* Chat Header */
.chat-header {
  background: #9032ed;
  color: white;
  padding: 0.5rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.chat-header h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: white;
  flex: 1 1 auto;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.close-chat-btn {
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease;
  min-height: 44px;
  min-width: 44px;
}

.close-chat-btn:hover {
  transform: scale(1.2);
}

.close-chat-btn:focus {
  outline: 2px solid white;
  outline-offset: -2px;
}

/* Chat Messages Area */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 1rem 0.5rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: #fafafa;
  max-height: calc(100% - 120px);
}

.chat-messages::-webkit-scrollbar {
  width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
  background: #f1f1f1;
}

.chat-messages::-webkit-scrollbar-thumb {
  background: #888;
  border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
  background: #555;
}

/* Chat Message */
.chat-message {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  animation: fadeIn 0.3s ease;
}

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

.message-content {
  margin: 0;
}

.message-content p {
  margin: 0;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  word-wrap: break-word;
  line-height: 1.4;
  font-size: 0.95rem;
}

/* User Message */
.user-message .message-content p {
  background: #9032ed;
  color: white;
  margin-left: auto;
  max-width: 85%;
  text-align: left;
}

.user-message .message-content p a {
  color: #e0d7ff;
  text-decoration: underline;
}

.user-message .message-content p a:hover {
  color: white;
  text-decoration: none;
}

/* Bot Message */
.bot-message .message-content p {
  background: white;
  color: #333;
  margin-right: auto;
  max-width: 85%;
  border: 1px solid #e0e0e0;
}

.bot-message .message-content p a {
  color: #9032ed;
  text-decoration: underline;
  font-weight: 500;
}

.bot-message .message-content p a:hover {
  color: #7a2ad1;
  text-decoration: none;
}

/* Message Time */
.message-time {
  font-size: 0.75rem;
  color: #999;
  padding: 0 0.5rem;
}

.user-message .message-time {
  text-align: right;
}

.bot-message .message-time {
  text-align: left;
}

/* Chat Input Area */
.chat-input-area {
  display: flex;
  gap: 0.5rem;
  padding: 0.5rem;
  background: white;
  border: 1px solid #e0e0e0;
  flex-shrink: 0;
  box-sizing: border-box;
}

.chat-input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid #ddd;
  border-radius: 24px;
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s ease;
  min-height: 44px;
}

.chat-input:focus {
  border-color: #ddd;
  outline: none;
}

.chat-input::placeholder {
  color: #999;
}

.send-chat-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #9032ed;
  color: white;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  min-height: 44px;
  min-width: 44px;
  padding: 0;
}

.send-chat-btn:hover {
  background: #7a2ad1;
  transform: scale(1.05);
}

.send-chat-btn:focus {
  outline: 3px solid #9032ed;
  outline-offset: 2px;
}

.send-chat-btn:active {
  transform: scale(0.95);
}

/* Back-to-Top Button */
.back-to-top {
  position: fixed;
  right: 2rem;
  bottom: 150px;
  width: 56px;
  height: 56px;
  background: #9032ed;
  color: white;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-shadow: 0 6px 18px rgba(144, 50, 237, 0.3);
  cursor: pointer;
  z-index: 99998;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
  border: 2px solid white;
  font-size: 1.2rem;
  min-height: 44px;
  min-width: 44px;
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(144, 50, 237, 0.4);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:focus {
  outline: 3px solid #9032ed;
  outline-offset: 2px;
}

/* Dark Mode Support */
body.dark-mode .chat-window {
  background: #262626;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

body.dark-mode .chat-messages {
  background: #1a1a1a;
}

body.dark-mode .bot-message .message-content p {
  background: #383838;
  color: #e0e0e0;
  border-color: #555;
}

body.dark-mode .bot-message .message-content p a {
  color: #b75dff;
  text-decoration: underline;
}

body.dark-mode .bot-message .message-content p a:hover {
  color: #d99fff;
  text-decoration: none;
}

body.dark-mode .user-message .message-content p {
  background: #9032ed;
}

body.dark-mode .user-message .message-content p a {
  color: #e0d7ff;
  text-decoration: underline;
}

body.dark-mode .user-message .message-content p a:hover {
  color: white;
  text-decoration: none;
}

body.dark-mode .message-time {
  color: #888;
}

body.dark-mode .chat-input-area {
  background: #262626;
  border-top-color: #444;
}

body.dark-mode .chat-input {
  background: #383838;
  color: #e0e0e0;
  border-color: #555;
}

body.dark-mode .chat-input:focus {
  border-color: #b75dff;
  box-shadow: 0 0 0 3px rgba(183, 93, 255, 0.2);
}

body.dark-mode .chat-input::placeholder {
  color: #999;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .chat-bubble-container {
    bottom: 1rem;
    right: 1rem;
  }

  .chat-window {
    width: calc(100vw - 2rem);
    height: 70vh;
    max-height: 500px;
    bottom: 70px;
    right: 0;
  }

  .chat-bubble-btn {
    width: 56px;
    height: 56px;
    font-size: 1.25rem;
  }

  .message-content p {
    font-size: 0.9rem;
  }

  .chat-header h3 {
    font-size: 1rem;
  }

  .back-to-top {
    bottom: 120px;
    width: 50px;
    height: 50px;
    font-size: 1rem;
  }
}

/* Extra small screens */
@media (max-width: 480px) {
  .chat-bubble-container {
    bottom: 0.5rem;
    right: 0.5rem;
  }

  .chat-window {
    width: calc(100vw - 1rem);
    height: 80vh;
    bottom: 60px;
  }

  .chat-bubble-btn {
    width: 50px;
    height: 50px;
  }

  .chat-input-area {
    padding: 0.5rem;
  }

  .chat-input {
    padding: 0.5rem 0.5rem;
    font-size: 0.9rem;
  }

  .back-to-top {
    bottom: 110px;
    width: 44px;
    height: 44px;
    font-size: 0.9rem;
  }
}

/* Screen Reader Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}