/**
 * Universal AI Chat Widget CSS
 * 
 * Platform-agnostic styles for the AI chatbot widget.
 * Can be used across WordPress, Shopify, and other platforms.
 * 
 * @version 1.0.0
 * @license GPL-2.0-or-later
 */

/* CSS Custom Properties for Easy Customization */
:root {
  --ai-chat-primary-color: #0073aa;
  --ai-chat-primary-hover: #005a87;
  --ai-chat-secondary-color: #f0f0f1;
  --ai-chat-text-color: #333;
  --ai-chat-text-light: #666;
  --ai-chat-border-color: #dcdcde;
  --ai-chat-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  --ai-chat-border-radius: 8px;
  --ai-chat-font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
  --ai-chat-z-index: 999999;
}

/* Base Reset for All Chat Elements */
.ai-chat-widget *,
.ai-chat-shortcode * {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Prevent Theme Style Conflicts */
.ai-chat-widget,
.ai-chat-shortcode {
  font-family: var(--ai-chat-font-family);
  font-size: 14px;
  line-height: 1.4;
  color: var(--ai-chat-text-color);
  text-align: left;
  direction: ltr;
  all: initial;
  font-family: var(--ai-chat-font-family);
}

/* Widget Container - Fixed Position */
.ai-chat-widget {
  position: fixed !important;
  z-index: var(--ai-chat-z-index) !important;
  pointer-events: auto !important;
  font-family: var(--ai-chat-font-family) !important;
}

/* Widget Positioning */
.ai-chat-widget.bottom-right {
  bottom: 20px;
  right: 20px;
}

.ai-chat-widget.bottom-left {
  bottom: 20px;
  left: 20px;
}

.ai-chat-widget.top-right {
  top: 20px;
  right: 20px;
}

.ai-chat-widget.top-left {
  top: 20px;
  left: 20px;
}

/* Chat Bubble Button */
.ai-chat-button {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--ai-chat-primary-color);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--ai-chat-shadow);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.ai-chat-button:hover {
  background: var(--ai-chat-primary-hover);
  transform: scale(1.05);
}

.ai-chat-button:focus {
  outline: 2px solid var(--ai-chat-primary-color);
  outline-offset: 2px;
}

/* Chat Icon */
.ai-chat-icon {
  width: 24px;
  height: 24px;
  fill: white;
  transition: transform 0.3s ease;
}

.ai-chat-button.open .ai-chat-icon {
  transform: scale(0);
}

/* Close Icon */
.ai-chat-close-icon {
  width: 24px;
  height: 24px;
  fill: white;
  position: absolute;
  transform: scale(0);
  transition: transform 0.3s ease;
}

.ai-chat-button.open .ai-chat-close-icon {
  transform: scale(1);
}

/* Chat Window */
.ai-chat-window {
  position: absolute;
  width: 380px;
  height: 500px;
  max-width: calc(100vw - 40px);
  max-height: calc(100vh - 100px);
  background: white;
  border-radius: var(--ai-chat-border-radius);
  box-shadow: var(--ai-chat-shadow);
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transform: scale(0.8) translateY(20px);
  transition: all 0.3s ease;
  overflow: hidden;
  border: 1px solid var(--ai-chat-border-color);
}

/* Window Positioning Based on Widget Position */
.ai-chat-widget.bottom-right .ai-chat-window,
.ai-chat-widget.top-right .ai-chat-window {
  right: 0;
  bottom: 70px;
}

.ai-chat-widget.bottom-left .ai-chat-window,
.ai-chat-widget.top-left .ai-chat-window {
  left: 0;
  bottom: 70px;
}

.ai-chat-widget.top-right .ai-chat-window,
.ai-chat-widget.top-left .ai-chat-window {
  bottom: auto;
  top: 70px;
}

/* Show Window */
.ai-chat-widget.open .ai-chat-window {
  opacity: 1;
  visibility: visible;
  transform: scale(1) translateY(0);
}

/* Chat Header */
.ai-chat-header {
  background: var(--ai-chat-primary-color);
  color: white;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-radius: var(--ai-chat-border-radius) var(--ai-chat-border-radius) 0 0;
}

.ai-chat-title {
  font-weight: 600;
  font-size: 16px;
}

.ai-chat-controls {
  display: flex;
  gap: 8px;
}

.ai-chat-minimize-btn,
.ai-chat-close-btn {
  width: 28px;
  height: 28px;
  border: none;
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
  font-size: 16px;
  line-height: 1;
}

.ai-chat-minimize-btn:hover,
.ai-chat-close-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* Messages Container */
.ai-chat-messages {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: var(--ai-chat-secondary-color);
}

/* Custom Scrollbar */
.ai-chat-messages::-webkit-scrollbar {
  width: 6px;
}

.ai-chat-messages::-webkit-scrollbar-track {
  background: transparent;
}

.ai-chat-messages::-webkit-scrollbar-thumb {
  background: var(--ai-chat-border-color);
  border-radius: 3px;
}

.ai-chat-messages::-webkit-scrollbar-thumb:hover {
  background: var(--ai-chat-text-light);
}

/* Message Styles */
.ai-chat-message {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  animation: fadeInUp 0.3s ease;
}

.ai-chat-user-message {
  flex-direction: row-reverse;
}

.ai-chat-message-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--ai-chat-primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 600;
  color: white;
}

.ai-chat-user-message .ai-chat-message-avatar {
  background: var(--ai-chat-text-light);
}

.ai-chat-message-content {
  background: white;
  padding: 12px 16px;
  border-radius: var(--ai-chat-border-radius);
  max-width: 80%;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  position: relative;
}

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

/* Message Bubble Tails */
.ai-chat-message-content::before {
  content: '';
  position: absolute;
  top: 12px;
  left: -6px;
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-right: 6px solid white;
}

.ai-chat-user-message .ai-chat-message-content::before {
  left: auto;
  right: -6px;
  border-right: none;
  border-left: 6px solid var(--ai-chat-primary-color);
}

/* Typing Indicator */
.ai-chat-typing {
  display: flex;
  align-items: center;
  gap: 12px;
  animation: fadeInUp 0.3s ease;
}

.ai-chat-typing-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--ai-chat-primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 12px;
  font-weight: 600;
}

.ai-chat-typing-content {
  background: white;
  padding: 16px;
  border-radius: var(--ai-chat-border-radius);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  position: relative;
}

.ai-chat-typing-content::before {
  content: '';
  position: absolute;
  top: 16px;
  left: -6px;
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-right: 6px solid white;
}

.ai-chat-typing-dots {
  display: flex;
  gap: 4px;
}

.ai-chat-typing-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ai-chat-text-light);
  animation: typingDot 1.4s infinite ease-in-out;
}

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

/* Input Area */
.ai-chat-input-area {
  padding: 20px;
  border-top: 1px solid var(--ai-chat-border-color);
  background: white;
}

.ai-chat-form {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

.ai-chat-input {
  flex: 1;
  resize: none;
  border: 1px solid var(--ai-chat-border-color);
  border-radius: var(--ai-chat-border-radius);
  padding: 12px 16px;
  font-family: inherit;
  font-size: 14px;
  line-height: 1.4;
  min-height: 20px;
  max-height: 100px;
  outline: none;
  transition: border-color 0.2s ease;
}

.ai-chat-input:focus {
  border-color: var(--ai-chat-primary-color);
}

.ai-chat-send-btn {
  width: 40px;
  height: 40px;
  border: none;
  background: var(--ai-chat-primary-color);
  color: white;
  border-radius: var(--ai-chat-border-radius);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
  flex-shrink: 0;
}

.ai-chat-send-btn:hover:not(:disabled) {
  background: var(--ai-chat-primary-hover);
}

.ai-chat-send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.ai-chat-send-icon {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes typingDot {
  0%, 80%, 100% {
    transform: scale(0.8);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .ai-chat-widget {
    bottom: 10px !important;
    right: 10px !important;
    left: 10px !important;
    top: auto !important;
  }
  
  .ai-chat-widget.bottom-left,
  .ai-chat-widget.top-left,
  .ai-chat-widget.top-right {
    right: 10px !important;
    left: 10px !important;
  }
  
  .ai-chat-window {
    width: calc(100vw - 20px);
    height: calc(100vh - 100px);
    max-width: none;
    max-height: none;
    bottom: 70px !important;
    right: 0 !important;
    left: 0 !important;
    top: auto !important;
  }
}

@media (max-width: 480px) {
  .ai-chat-button {
    width: 50px;
    height: 50px;
  }
  
  .ai-chat-icon,
  .ai-chat-close-icon {
    width: 20px;
    height: 20px;
  }
  
  .ai-chat-window {
    height: calc(100vh - 80px);
    bottom: 60px !important;
  }
  
  .ai-chat-messages {
    padding: 16px;
  }
  
  .ai-chat-input-area {
    padding: 16px;
  }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --ai-chat-secondary-color: #1e1e1e;
    --ai-chat-text-color: #ffffff;
    --ai-chat-text-light: #cccccc;
    --ai-chat-border-color: #404040;
  }
  
  .ai-chat-window {
    background: #2d2d2d;
    color: var(--ai-chat-text-color);
  }
  
  .ai-chat-messages {
    background: var(--ai-chat-secondary-color);
  }
  
  .ai-chat-message-content {
    background: #404040;
    color: var(--ai-chat-text-color);
  }
  
  .ai-chat-message-content::before {
    border-right-color: #404040;
  }
  
  .ai-chat-typing-content {
    background: #404040;
    color: var(--ai-chat-text-color);
  }
  
  .ai-chat-typing-content::before {
    border-right-color: #404040;
  }
  
  .ai-chat-input {
    background: #404040;
    color: var(--ai-chat-text-color);
    border-color: var(--ai-chat-border-color);
  }
  
  .ai-chat-input-area {
    background: #2d2d2d;
    border-color: var(--ai-chat-border-color);
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  .ai-chat-widget,
  .ai-chat-window {
    border: 2px solid;
  }
  
  .ai-chat-button:focus,
  .ai-chat-minimize-btn:focus,
  .ai-chat-close-btn:focus,
  .ai-chat-send-btn:focus,
  .ai-chat-input:focus {
    outline: 3px solid;
    outline-offset: 2px;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  .ai-chat-widget *,
  .ai-chat-shortcode * {
    animation: none !important;
    transition: none !important;
  }
}

/* Print Styles */
@media print {
  .ai-chat-widget {
    display: none !important;
  }
}

/* Hide Widget State */
.ai-chat-widget.hidden {
  display: none !important;
}

/* Loading State */
.ai-chat-widget.loading {
  opacity: 0.6;
  pointer-events: none;
}

/* Error State */
.ai-chat-error {
  color: #d63638;
  background: #fcf0f1;
  border: 1px solid #d63638;
  border-radius: var(--ai-chat-border-radius);
  padding: 12px 16px;
  margin: 12px 0;
  font-size: 13px;
}

/* Success State */
.ai-chat-success {
  color: #00a32a;
  background: #f0f6fc;
  border: 1px solid #00a32a;
  border-radius: var(--ai-chat-border-radius);
  padding: 12px 16px;
  margin: 12px 0;
  font-size: 13px;
}