/**
 * GetDateLove Customer Service Chat Styles
 * 客服聊天界面样式 - 现代化设计
 */

/* ===== 变量定义 ===== */
:root {
  /* 主题色彩 */
  --cs-primary-color: #FF3B30;
  --cs-primary-hover: #E6342A;
  --cs-secondary-color: #FFD1DC;
  --cs-accent-color: #007AFF;
  
  /* 中性色彩 */
  --cs-white: #FFFFFF;
  --cs-gray-50: #FAFAFA;
  --cs-gray-100: #F5F5F5;
  --cs-gray-200: #E5E5E5;
  --cs-gray-300: #D4D4D4;
  --cs-gray-400: #A3A3A3;
  --cs-gray-500: #737373;
  --cs-gray-600: #525252;
  --cs-gray-700: #404040;
  --cs-gray-800: #262626;
  --cs-gray-900: #171717;
  
  /* 功能色彩 */
  --cs-success: #22C55E;
  --cs-warning: #F59E0B;
  --cs-error: #EF4444;
  --cs-info: #3B82F6;
  
  /* 阴影 */
  --cs-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --cs-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --cs-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --cs-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --cs-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* 边框半径 */
  --cs-radius-sm: 4px;
  --cs-radius: 8px;
  --cs-radius-md: 12px;
  --cs-radius-lg: 16px;
  --cs-radius-xl: 24px;
  --cs-radius-full: 9999px;
  
  /* 间距 */
  --cs-spacing-xs: 4px;
  --cs-spacing-sm: 8px;
  --cs-spacing: 12px;
  --cs-spacing-md: 16px;
  --cs-spacing-lg: 20px;
  --cs-spacing-xl: 24px;
  --cs-spacing-2xl: 32px;
  
  /* 字体 */
  --cs-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --cs-font-size-xs: 12px;
  --cs-font-size-sm: 14px;
  --cs-font-size: 16px;
  --cs-font-size-lg: 18px;
  --cs-font-size-xl: 20px;
  
  /* 动画 */
  --cs-transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --cs-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --cs-transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 容器样式 ===== */
.cs-chat-container {
  position: fixed;
  bottom: var(--cs-spacing-lg);
  right: var(--cs-spacing-lg);
  z-index: 10000;
  font-family: var(--cs-font-family);
  font-size: var(--cs-font-size-sm);
  line-height: 1.5;
  color: var(--cs-gray-900);
  user-select: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== 切换按钮 ===== */
.cs-toggle-btn {
  width: 64px;
  height: 64px;
  border: none;
  border-radius: var(--cs-radius-full);
  background: linear-gradient(135deg, var(--cs-primary-color) 0%, var(--cs-primary-hover) 100%);
  color: var(--cs-white);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--cs-shadow-lg);
  transition: all var(--cs-transition);
  position: relative;
  overflow: hidden;
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

.cs-toggle-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--cs-transition-fast);
}

.cs-toggle-btn:hover::before {
  opacity: 1;
}

.cs-toggle-btn:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: var(--cs-shadow-xl);
}

.cs-toggle-btn:active {
  transform: translateY(0) scale(0.98);
}

.cs-chat-icon,
.cs-close-icon {
  transition: all var(--cs-transition);
  position: absolute;
}

.cs-close-icon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.8);
}

.cs-chat-open .cs-chat-icon {
  opacity: 0;
  transform: rotate(90deg) scale(0.8);
}

.cs-chat-open .cs-close-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* ===== 聊天窗口 ===== */
.cs-chat-window {
  position: absolute;
  bottom: 80px;
  right: 0;
  width: 380px;
  height: 600px;
  background: var(--cs-white);
  border-radius: var(--cs-radius-lg);
  box-shadow: var(--cs-shadow-xl);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.95);
  transition: all var(--cs-transition-slow);
  border: 1px solid var(--cs-gray-200);
}

.cs-chat-open .cs-chat-window {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

/* ===== 聊天头部 ===== */
.cs-chat-header {
  background: linear-gradient(135deg, var(--cs-primary-color) 0%, var(--cs-primary-hover) 100%);
  color: var(--cs-white);
  padding: var(--cs-spacing-md) var(--cs-spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  position: relative;
  overflow: hidden;
}

.cs-chat-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: -50%;
  width: 200%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transform: translateX(-100%);
  animation: cs-shimmer 3s infinite;
}

@keyframes cs-shimmer {
  0% { transform: translateX(-100%); }
  50% { transform: translateX(100%); }
  100% { transform: translateX(100%); }
}

.cs-header-info {
  display: flex;
  align-items: center;
  gap: var(--cs-spacing);
}

.cs-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--cs-radius-full);
  background: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
}

.cs-header-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.cs-header-title {
  font-weight: 600;
  font-size: var(--cs-font-size);
}

.cs-header-status {
  font-size: var(--cs-font-size-xs);
  opacity: 0.9;
  display: flex;
  align-items: center;
  gap: var(--cs-spacing-xs);
}

.cs-header-status::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: var(--cs-radius-full);
  background: var(--cs-success);
  animation: cs-pulse 2s infinite;
}

@keyframes cs-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(0.95); }
}

.cs-minimize-btn {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: var(--cs-radius);
  background: rgba(255, 255, 255, 0.2);
  color: var(--cs-white);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--cs-transition-fast);
  outline: none;
}

.cs-minimize-btn:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.05);
}

/* ===== 聊天主体 ===== */
.cs-chat-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.cs-chat-messages {
  flex: 1;
  padding: var(--cs-spacing-lg);
  overflow-y: auto;
  scroll-behavior: smooth;
  display: flex;
  flex-direction: column;
  gap: var(--cs-spacing-md);
}

/* 自定义滚动条 */
.cs-chat-messages::-webkit-scrollbar {
  width: 4px;
}

.cs-chat-messages::-webkit-scrollbar-track {
  background: var(--cs-gray-100);
}

.cs-chat-messages::-webkit-scrollbar-thumb {
  background: var(--cs-gray-300);
  border-radius: var(--cs-radius-full);
}

.cs-chat-messages::-webkit-scrollbar-thumb:hover {
  background: var(--cs-gray-400);
}

/* ===== 消息样式 ===== */
.cs-message {
  display: flex;
  flex-direction: column;
  gap: var(--cs-spacing-xs);
  animation: cs-message-enter var(--cs-transition) ease-out;
}

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

.cs-message-content {
  display: flex;
  align-items: flex-start;
  gap: var(--cs-spacing-sm);
}

.cs-message-user .cs-message-content {
  flex-direction: row-reverse;
}

.cs-bot-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--cs-radius-full);
  background: linear-gradient(135deg, var(--cs-accent-color), var(--cs-info));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--cs-font-size-sm);
  flex-shrink: 0;
}

.cs-message-text {
  max-width: 280px;
  padding: var(--cs-spacing) var(--cs-spacing-md);
  border-radius: var(--cs-radius-md);
  word-wrap: break-word;
  line-height: 1.4;
}

.cs-message-bot .cs-message-text {
  background: var(--cs-gray-100);
  border-bottom-left-radius: var(--cs-spacing-xs);
}

.cs-message-user .cs-message-text {
  background: linear-gradient(135deg, var(--cs-primary-color), var(--cs-primary-hover));
  color: var(--cs-white);
  border-bottom-right-radius: var(--cs-spacing-xs);
}

.cs-message-time {
  font-size: var(--cs-font-size-xs);
  color: var(--cs-gray-500);
  text-align: center;
  margin-top: var(--cs-spacing-xs);
}

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

.cs-message-bot .cs-message-time {
  text-align: left;
  margin-left: 44px; /* avatar width + gap */
}

/* ===== 打字指示器 ===== */
.cs-typing-indicator {
  opacity: 0.7;
}

.cs-typing-dots {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: var(--cs-spacing) var(--cs-spacing-md);
  background: var(--cs-gray-100);
  border-radius: var(--cs-radius-md);
  border-bottom-left-radius: var(--cs-spacing-xs);
}

.cs-typing-dots span {
  width: 6px;
  height: 6px;
  border-radius: var(--cs-radius-full);
  background: var(--cs-gray-400);
  animation: cs-typing-bounce 1.4s ease-in-out infinite both;
}

.cs-typing-dots span:nth-child(1) { animation-delay: -0.32s; }
.cs-typing-dots span:nth-child(2) { animation-delay: -0.16s; }
.cs-typing-dots span:nth-child(3) { animation-delay: 0; }

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

/* ===== 快捷问题 ===== */
.cs-quick-questions {
  padding: var(--cs-spacing-md) var(--cs-spacing-lg);
  border-top: 1px solid var(--cs-gray-200);
  background: var(--cs-gray-50);
}

.cs-quick-title {
  font-size: var(--cs-font-size-xs);
  font-weight: 600;
  color: var(--cs-gray-600);
  margin-bottom: var(--cs-spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.cs-quick-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--cs-spacing-sm);
}

.cs-quick-btn {
  padding: var(--cs-spacing-xs) var(--cs-spacing);
  border: 1px solid var(--cs-gray-300);
  border-radius: var(--cs-radius-full);
  background: var(--cs-white);
  color: var(--cs-gray-700);
  font-size: var(--cs-font-size-xs);
  cursor: pointer;
  transition: all var(--cs-transition-fast);
  outline: none;
  white-space: nowrap;
}

.cs-quick-btn:hover {
  border-color: var(--cs-primary-color);
  background: var(--cs-secondary-color);
  color: var(--cs-primary-color);
  transform: translateY(-1px);
}

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

/* ===== 聊天底部 ===== */
.cs-chat-footer {
  border-top: 1px solid var(--cs-gray-200);
  background: var(--cs-white);
}

.cs-input-container {
  display: flex;
  align-items: center;
  gap: var(--cs-spacing-sm);
  padding: var(--cs-spacing-md) var(--cs-spacing-lg);
}

.cs-chat-input {
  flex: 1;
  padding: var(--cs-spacing) var(--cs-spacing-md);
  border: 1px solid var(--cs-gray-300);
  border-radius: var(--cs-radius-full);
  background: var(--cs-white);
  color: var(--cs-gray-900);
  font-size: var(--cs-font-size-sm);
  outline: none;
  transition: all var(--cs-transition-fast);
  resize: none;
}

.cs-chat-input:focus {
  border-color: var(--cs-primary-color);
  box-shadow: 0 0 0 3px rgba(255, 59, 48, 0.1);
}

.cs-chat-input::placeholder {
  color: var(--cs-gray-400);
}

.cs-send-btn {
  width: 40px;
  height: 40px;
  border: none;
  border-radius: var(--cs-radius-full);
  background: var(--cs-primary-color);
  color: var(--cs-white);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--cs-transition-fast);
  outline: none;
  flex-shrink: 0;
}

.cs-send-btn:not(:disabled):hover {
  background: var(--cs-primary-hover);
  transform: scale(1.05);
}

.cs-send-btn:not(:disabled):active {
  transform: scale(0.95);
}

.cs-send-btn:disabled {
  background: var(--cs-gray-300);
  cursor: not-allowed;
  transform: none;
}

.cs-footer-text {
  text-align: center;
  font-size: var(--cs-font-size-xs);
  color: var(--cs-gray-400);
  padding: var(--cs-spacing-xs) var(--cs-spacing-lg) var(--cs-spacing-sm);
}

/* ===== 链接样式 ===== */
.cs-message-text a {
  color: var(--cs-accent-color);
  text-decoration: underline;
  transition: color var(--cs-transition-fast);
}

.cs-message-text a:hover {
  color: var(--cs-info);
}

.cs-message-user .cs-message-text a {
  color: var(--cs-secondary-color);
}

.cs-message-user .cs-message-text a:hover {
  color: var(--cs-white);
}

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
  .cs-chat-container {
    bottom: var(--cs-spacing-md);
    right: var(--cs-spacing-md);
    left: var(--cs-spacing-md);
  }

  .cs-chat-window {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    top: 0;
    width: 100%;
    height: 100vh;
    border-radius: 0;
    transform: translateY(100%);
  }

  .cs-chat-open .cs-chat-window {
    transform: translateY(0);
  }

  /* 移动端聊天打开时隐藏切换按钮，避免重叠 */
  .cs-chat-open .cs-toggle-btn {
    display: none;
  }

  .cs-toggle-btn {
    width: 56px;
    height: 56px;
    position: fixed;
    bottom: var(--cs-spacing-lg);
    right: var(--cs-spacing-lg);
    z-index: 10001;
  }

  .cs-message-text {
    max-width: calc(100vw - 120px);
  }

  .cs-quick-buttons {
    flex-direction: column;
  }

  .cs-quick-btn {
    text-align: center;
  }
}

@media (max-width: 480px) {
  .cs-chat-messages {
    padding: var(--cs-spacing-md);
  }

  .cs-input-container {
    padding: var(--cs-spacing-sm) var(--cs-spacing-md);
  }

  .cs-quick-questions {
    padding: var(--cs-spacing-sm) var(--cs-spacing-md);
  }

  .cs-message-text {
    max-width: calc(100vw - 100px);
    padding: var(--cs-spacing-sm) var(--cs-spacing);
  }

  .cs-toggle-btn {
    width: 52px;
    height: 52px;
    bottom: var(--cs-spacing-md);
    right: var(--cs-spacing-md);
  }
}

/* ===== 用户反馈按钮 ===== */
.cs-feedback-container {
  display: flex;
  gap: var(--cs-spacing-xs);
  margin-top: var(--cs-spacing-xs);
  justify-content: flex-start;
  opacity: 0.7;
  transition: opacity var(--cs-transition-fast);
}

.cs-feedback-container:hover {
  opacity: 1;
}

.cs-feedback-btn {
  background: none;
  border: none;
  padding: var(--cs-spacing-xs);
  border-radius: var(--cs-radius-sm);
  cursor: pointer;
  font-size: 14px;
  transition: all var(--cs-transition-fast);
  min-width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cs-feedback-btn:hover {
  background: var(--cs-gray-100);
  transform: scale(1.1);
}

.cs-feedback-btn:active {
  transform: scale(0.95);
}

.cs-feedback-btn.cs-feedback-positive:hover {
  background: rgba(34, 197, 94, 0.1);
  color: var(--cs-success);
}

.cs-feedback-btn.cs-feedback-negative:hover {
  background: rgba(239, 68, 68, 0.1);
  color: var(--cs-error);
}

.cs-feedback-btn.cs-feedback-active {
  background: var(--cs-primary-color);
  color: var(--cs-white);
}

.cs-feedback-btn.cs-feedback-active:hover {
  background: var(--cs-primary-hover);
}

.cs-feedback-thank-you {
  font-size: var(--cs-font-size-xs);
  color: var(--cs-gray-500);
  margin-top: var(--cs-spacing-xs);
  padding: var(--cs-spacing-xs);
  background: var(--cs-gray-50);
  border-radius: var(--cs-radius-sm);
  display: none;
  animation: fadeInSlide 0.3s ease-out;
}

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

/* ===== 客服系统保持亮色主题 ===== */
/* 客服系统不适配深色主题，始终保持亮色显示以保证最佳用户体验 */

/* ===== 无障碍支持 ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* 焦点可见性 */
.cs-toggle-btn:focus-visible,
.cs-minimize-btn:focus-visible,
.cs-send-btn:focus-visible,
.cs-quick-btn:focus-visible,
.cs-feedback-btn:focus-visible {
  box-shadow: 0 0 0 3px rgba(255, 59, 48, 0.3);
}

.cs-chat-input:focus-visible {
  box-shadow: 0 0 0 3px rgba(255, 59, 48, 0.1);
}

/* 高对比度支持 */
@media (prefers-contrast: high) {
  .cs-chat-window {
    border: 2px solid var(--cs-gray-900);
  }

  .cs-message-text {
    border: 1px solid var(--cs-gray-300);
  }

  .cs-chat-input {
    border: 2px solid var(--cs-gray-500);
  }
}