/* ==================== 全局变量（Gemini配色） ==================== */
:root {
  --bg-primary: #1e1e1e;
  --bg-secondary: #2d2d2d;
  --bg-hover: #3a3a3a;
  --bg-input: #2a2a2a;
  --text-primary: #e3e3e3;
  --text-secondary: #9aa0a6;
  --border-color: #3c4043;
  --accent-blue: #8ab4f8;
  --accent-purple: #c58af9;
  --gem-icon: #fbbf24;
  --danger-red: #f28b82;
  --success-green: #81c995;
}

/* ==================== 基础重置 ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Google Sans', 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow: hidden;
  display: flex;
  height: 100vh;
}

/* ==================== 汉堡菜单按钮（固定位置） ==================== */
.menu-btn {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 1001;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.menu-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  transform: scale(1.05);
}

/* 汉堡图标 */
.hamburger {
  width: 24px;
  height: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* 点击后变成 X */
.menu-btn.active .hamburger span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}
.menu-btn.active .hamburger span:nth-child(2) {
  opacity: 0;
}
.menu-btn.active .hamburger span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* ==================== 侧边栏 ==================== */
.sidebar {
  width: 280px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform 0.3s ease;
  flex-shrink: 0;
  position: relative;
}

/* 收缩状态 */
.sidebar.collapsed {
  transform: translateX(-280px);
}

.sidebar-header {
  padding: 16px;
  padding-top: 68px;
  border-bottom: 1px solid var(--border-color);
}

.new-chat-btn {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 10px 16px;
  border-radius: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 14px;
}

.new-chat-btn:hover {
  background: var(--bg-hover);
}

/* 侧边栏区域 */
.sidebar-section {
  padding: 12px 16px;
  overflow-y: auto;
}

.sidebar-section.flex-1 {
  flex: 1;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.section-header h3 {
  font-size: 13px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 500;
}

.icon-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* Gems列表 */
.gems-list, .chats-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.gem-item, .chat-item {
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 10px;
  position: relative;
  min-height: 44px;
}

.gem-item:hover, .chat-item:hover {
  background: var(--bg-hover);
}

.gem-item.active, .chat-item.active {
  background: var(--bg-hover);
}

.gem-icon {
  width: 24px;
  height: 24px;
  color: var(--gem-icon);
  flex-shrink: 0;
}

.gem-info, .chat-info {
  flex: 1;
  overflow: hidden;
}

.gem-name, .chat-title {
  font-size: 14px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.gem-badge {
  font-size: 11px;
  color: var(--text-secondary);
  background: var(--bg-input);
  padding: 2px 6px;
  border-radius: 4px;
  margin-top: 2px;
  display: inline-block;
}

.chat-date {
  font-size: 12px;
  color: var(--text-secondary);
}

/* 用户信息 */
.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
  color: var(--bg-primary);
}

.user-name {
  font-size: 14px;
  color: var(--text-primary);
}

/* ==================== 主内容区 ==================== */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: margin-left 0.3s ease;
  margin-left: 0;
}
.sidebar.collapsed ~ .main-content {
  margin-left: -280px;
}

.chat-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-color);
}
.chat-header h1 {
  max-width: 800px;
  margin: 0 auto;
  font-size: 20px;
  font-weight: 400;
  color: var(--text-primary);
}

.chat-container {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  position: relative;
}

/* 消息容器 */
.messages-container {
  max-width: 800px;
  margin: 0 auto;
}

.message {
  margin-bottom: 32px;
  animation: fadeIn 0.3s ease;
}

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

.message-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.message-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
  color: var(--bg-primary);
}

.message.assistant .message-avatar {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
}

.message-role {
  font-weight: 500;
  font-size: 14px;
}

/* 思考链区域 */
.thinking-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  margin-bottom: 16px;
  overflow: hidden;
}

.thinking-header {
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: background 0.2s;
}

.thinking-header:hover {
  background: var(--bg-hover);
}

.thinking-icon {
  color: var(--accent-purple);
}

.thinking-label {
  flex: 1;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent-purple);
}

.thinking-toggle {
  transition: transform 0.2s;
}

.thinking-toggle.expanded {
  transform: rotate(180deg);
}

.thinking-content {
  padding: 0 16px 16px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
  font-style: italic;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.thinking-content.expanded {
  max-height: 1000px;
}

/* ==================== Markdown样式增强 ==================== */

/* 基础消息内容样式 */
.message-content {
  padding-left: 44px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-primary);
}

.message-text {
  max-width: 100%;
}

/* 标题样式 */
.message-content h1 {
  font-size: 28px;
  font-weight: 600;
  margin: 24px 0 16px 0;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

.message-content h2 {
  font-size: 24px;
  font-weight: 600;
  margin: 20px 0 12px 0;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

.message-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 16px 0 10px 0;
  color: var(--text-primary);
}

.message-content h4 {
  font-size: 17px;
  font-weight: 600;
  margin: 14px 0 8px 0;
  color: var(--text-secondary);
}

.message-content h5 {
  font-size: 15px;
  font-weight: 600;
  margin: 12px 0 6px 0;
  color: var(--text-secondary);
}

.message-content h6 {
  font-size: 14px;
  font-weight: 600;
  margin: 10px 0 6px 0;
  color: var(--text-secondary);
  font-style: italic;
}

/* 段落样式 */
.message-content p {
  margin: 12px 0;
  line-height: 1.7;
}

/* 列表样式 */
.message-content ul,
.message-content ol {
  margin: 12px 0;
  padding-left: 28px;
}

.message-content ul {
  list-style-type: disc;
}

.message-content ol {
  list-style-type: decimal;
}

.message-content li {
  margin: 6px 0;
  line-height: 1.6;
  padding-left: 8px;
}

/* 嵌套列表缩进 */
.message-content ul ul,
.message-content ol ul {
  list-style-type: circle;
  margin: 6px 0;
  padding-left: 24px;
}

.message-content ul ul ul,
.message-content ol ul ul,
.message-content ol ol ul {
  list-style-type: square;
}

.message-content ol ol,
.message-content ul ol {
  list-style-type: lower-alpha;
  margin: 6px 0;
  padding-left: 24px;
}

.message-content ol ol ol,
.message-content ul ol ol {
  list-style-type: lower-roman;
}

/* 引用块样式 */
.message-content blockquote {
  margin: 16px 0;
  padding: 12px 16px;
  border-left: 4px solid var(--accent-blue);
  background: var(--bg-secondary);
  border-radius: 0 6px 6px 0;
  color: var(--text-secondary);
  font-style: italic;
}

.message-content blockquote p {
  margin: 6px 0;
}

/* 代码块样式 */
.message-content pre {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
  margin: 16px 0;
  position: relative;
}

.message-content pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-primary);
}

/* 行内代码样式 */
.message-content code {
  background: var(--bg-input);
  padding: 3px 6px;
  border-radius: 4px;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 0.9em;
  color: var(--accent-blue);
  border: 1px solid var(--border-color);
}

/* 分隔线 */
.message-content hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 24px 0;
}

/* 表格样式 */
.message-content table {
  border-collapse: collapse;
  width: 100%;
  margin: 16px 0;
  font-size: 14px;
}

.message-content table th,
.message-content table td {
  border: 1px solid var(--border-color);
  padding: 10px 12px;
  text-align: left;
}

.message-content table th {
  background: var(--bg-secondary);
  font-weight: 600;
  color: var(--text-primary);
}

.message-content table tr:hover {
  background: var(--bg-hover);
}

/* 链接样式 */
.message-content a {
  color: var(--accent-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.message-content a:hover {
  border-bottom-color: var(--accent-blue);
}

/* 图片样式 */
.message-content img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 16px 0;
  display: block;
}

/* 强调样式 */
.message-content strong {
  font-weight: 600;
  color: var(--text-primary);
}

.message-content em {
  font-style: italic;
  color: var(--text-secondary);
}

/* 删除线 */
.message-content del {
  text-decoration: line-through;
  color: var(--text-secondary);
  opacity: 0.7;
}

/* 任务列表 */
.message-content input[type="checkbox"] {
  margin-right: 8px;
  cursor: pointer;
}

.message-content li.task-list-item {
  list-style-type: none;
  margin-left: -20px;
}

/* ==================== 输入区域 ==================== */
.input-container {
  padding: 16px 24px 24px;
  border-top: 1px solid var(--border-color);
}

.input-wrapper {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 12px 16px;
  display: flex;
  align-items: flex-end;
  gap: 12px;
  transition: all 0.2s;
}

.input-wrapper:focus-within {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 2px rgba(138, 180, 248, 0.2);
}

#messageInput {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 15px;
  resize: none;
  max-height: 200px;
  outline: none;
  font-family: inherit;
}

#messageInput::placeholder {
  color: var(--text-secondary);
}

.send-btn {
  background: var(--accent-blue);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
}

.send-btn:hover:not(:disabled) {
  background: #5e9cf5;
  transform: scale(1.05);
}

.send-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.input-hint {
  text-align: center;
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* ==================== 认证页面 ==================== */
.auth-page {
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--bg-primary);
}

.auth-container {
  width: 100%;
  max-width: 400px;
  padding: 20px;
}

.auth-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 40px;
}

.auth-logo {
  text-align: center;
  font-size: 32px;
  font-weight: 400;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 32px;
}

.auth-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
}

.auth-tab {
  flex: 1;
  background: none;
  border: none;
  padding: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
  font-size: 15px;
}

.auth-tab.active {
  color: var(--accent-blue);
  border-bottom-color: var(--accent-blue);
}

.auth-form {
  display: none;
}

.auth-form.active {
  display: block;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px;
  color: var(--text-primary);
  font-size: 15px;
  transition: all 0.2s;
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 2px rgba(138, 180, 248, 0.2);
}

.error-message {
  color: var(--danger-red);
  font-size: 13px;
  margin-bottom: 16px;
  min-height: 20px;
}

.btn-primary {
  width: 100%;
  background: var(--accent-blue);
  border: none;
  color: var(--bg-primary);
  padding: 14px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary:hover {
  background: #5e9cf5;
}

.btn-secondary {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-secondary:hover {
  background: var(--bg-hover);
}

.btn-danger {
  background: var(--danger-red);
  border: none;
  color: var(--bg-primary);
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-danger:hover {
  background: #e06b63;
}

/* ==================== Gem编辑器 ==================== */
.editor-container {
  width: 100%;
  height: 100vh;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
}

.editor-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 16px;
}

.back-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 8px;
  transition: all 0.2s;
  font-size: 14px;
}

.back-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.editor-header h1 {
  font-size: 20px;
  font-weight: 400;
  color: var(--text-primary);
}

.editor-content {
  flex: 1;
  overflow-y: auto;
  padding: 40px 24px;
}

#gemForm {
  max-width: 700px;
  margin: 0 auto;
}

.required {
  color: var(--danger-red);
}

.char-count {
  text-align: right;
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.form-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

/* ==================== 滚动条美化 ==================== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* ==================== 打字机效果 ==================== */
.typing-indicator {
  display: inline-block;
  animation: typing 1.4s infinite;
}

@keyframes typing {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* ==================== Gems 公开市场样式 ==================== */
/* 区域徽章（显示数量） */
.section-badge {
  background: var(--accent-blue);
  color: var(--bg-primary);
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 10px;
  min-width: 20px;
  text-align: center;
}
/* 空状态提示 */
.gems-empty-hint {
  padding: 12px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
}
/* Gem 项目的公开/私密图标 */
.gem-public-icon,
.gem-private-icon {
  flex-shrink: 0;
  margin-left: auto;
}
.gem-public-icon {
  color: var(--success-green);
}
.gem-private-icon {
  color: var(--text-secondary);
}
/* Gem 所有者信息 */
.gem-owner {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 2px;
}
/* 公开市场的 Gem 项目样式 */
.gem-item-public {
  border-left: 2px solid var(--accent-blue);
}
.gem-item-public:hover {
  border-left-color: var(--accent-purple);
}
/* Gem 项目内的图标颜色区分 */
.gem-item-public .gem-icon {
  color: var(--accent-blue);
}
/* ==================== Gem 编辑按钮样式 ==================== */
.gem-edit-btn {
  opacity: 0;
  background: var(--bg-hover);
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  flex-shrink: 0;
  margin-left: 4px;
}
.gem-item:hover .gem-edit-btn {
  opacity: 1;
}
.gem-edit-btn:hover {
  background: var(--accent-blue);
  color: var(--bg-primary);
}
/* hover 时隐藏状态图标，显示编辑按钮 */
.gem-item:hover .gem-status-icon {
  display: none;
}

/* ==================== 用户余额和管理按钮样式 ==================== */
.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border-color);
}
.user-section {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 0;
}
.user-details {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.user-name {
  font-size: 14px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.user-balance {
  font-size: 12px;
  color: var(--success-green);
  font-family: 'Consolas', monospace;
}
.user-balance.warning-balance {
  color: var(--gem-icon);
}
.user-balance.low-balance {
  color: var(--danger-red);
}
.user-actions {
  display: flex;
  gap: 4px;
}
.admin-btn {
  color: var(--gem-icon) !important;
}
.admin-btn:hover {
  background: rgba(251, 191, 36, 0.2) !important;
}
/* ==================== 模态框样式 ==================== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: 2000;
  justify-content: center;
  align-items: center;
  padding: 20px;
}
.modal-overlay.active {
  display: flex;
}
.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: modalSlideIn 0.3s ease;
}
@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.admin-modal {
  width: 100%;
  max-width: 900px;
}
.recharge-modal {
  width: 100%;
  max-width: 400px;
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
}
.modal-header h2 {
  font-size: 20px;
  font-weight: 500;
  color: var(--text-primary);
}
.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 28px;
  cursor: pointer;
  padding: 0;
  line-height: 1;
  transition: color 0.2s;
}
.modal-close:hover {
  color: var(--text-primary);
}
.modal-body {
  padding: 24px;
  overflow-y: auto;
}
/* ==================== 管理后台统计卡片 ==================== */
.admin-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
}
.stat-value {
  font-size: 28px;
  font-weight: 600;
  color: var(--accent-blue);
  font-family: 'Consolas', monospace;
}
.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}
/* ==================== 管理后台表格 ==================== */
.admin-table-container {
  overflow-x: auto;
}
.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.admin-table th,
.admin-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}
.admin-table th {
  background: var(--bg-input);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.admin-table tr:hover {
  background: var(--bg-hover);
}
.admin-table .username {
  font-weight: 500;
}
.admin-table .negative-balance {
  color: var(--danger-red);
}
.admin-badge {
  background: var(--gem-icon);
  color: var(--bg-primary);
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 8px;
  font-weight: 600;
}
.current-user-badge {
  background: var(--accent-blue);
  color: var(--bg-primary);
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 8px;
}
.btn-small {
  background: var(--accent-blue);
  border: none;
  color: var(--bg-primary);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-small:hover {
  background: #5e9cf5;
}
/* Mini Toggle */
.toggle-mini {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 20px;
}
.toggle-mini input {
  opacity: 0;
  width: 0;
  height: 0;
}
.toggle-mini-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--border-color);
  border-radius: 20px;
  transition: all 0.3s;
}
.toggle-mini-slider:before {
  position: absolute;
  content: "";
  height: 14px;
  width: 14px;
  left: 3px;
  bottom: 3px;
  background: var(--text-primary);
  border-radius: 50%;
  transition: all 0.3s;
}
.toggle-mini input:checked + .toggle-mini-slider {
  background: var(--accent-blue);
}
.toggle-mini input:checked + .toggle-mini-slider:before {
  transform: translateX(16px);
  background: var(--bg-primary);
}
.toggle-mini input:disabled + .toggle-mini-slider {
  opacity: 0.5;
  cursor: not-allowed;
}
/* ==================== 充值模态框 ==================== */
.recharge-user {
  font-size: 16px;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.recharge-user span {
  font-weight: 600;
  color: var(--accent-blue);
}
.recharge-current {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.recharge-current span {
  font-family: 'Consolas', monospace;
  color: var(--success-green);
}
.recharge-options {
  display: flex;
  gap: 20px;
  margin-bottom: 20px;
}
.radio-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
}
.radio-label input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent-blue);
}
/* ==================== 响应式适配 ==================== */
@media (max-width: 768px) {
  .admin-stats {
    grid-template-columns: 1fr;
  }
  
  .admin-modal {
    max-height: 100vh;
    border-radius: 0;
  }
  
  .admin-table {
    font-size: 12px;
  }
  
  .admin-table th,
  .admin-table td {
    padding: 8px 12px;
  }
}


/* ==================== 文件上传相关样式 ==================== */
.attach-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  flex-shrink: 0;
}
.attach-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.input-wrapper {
  position: relative;
}
.input-wrapper.drag-over {
  border-color: var(--accent-blue);
  background: rgba(138, 180, 248, 0.1);
  box-shadow: 0 0 0 3px rgba(138, 180, 248, 0.2);
}
.input-wrapper.drag-over::after {
  content: '释放以添加文件';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--accent-blue);
  font-size: 14px;
  font-weight: 500;
  pointer-events: none;
  z-index: 10;
}
.attachments-preview {
  display: none;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 800px;
  margin: 0 auto 12px;
  padding: 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  align-items: flex-start;
}
.upload-limit-info {
  width: 100%;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}
.attachment-item {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.2s;
}
.attachment-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}
.attachment-image {
  width: 80px;
  height: 80px;
}
.attachment-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: pointer;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}
.attachment-file {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  max-width: 200px;
}
.file-icon {
  font-size: 24px;
  flex-shrink: 0;
}
.file-info {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.file-name {
  font-size: 13px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-size {
  font-size: 11px;
  color: var(--text-secondary);
}
.attachment-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 20px;
  height: 20px;
  background: rgba(0, 0, 0, 0.7);
  border: none;
  border-radius: 50%;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s;
}
.attachment-item:hover .attachment-remove {
  opacity: 1;
}
.attachment-remove:hover {
  background: var(--danger-red);
}
.message-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}
.message-image {
  max-width: 300px;
  max-height: 300px;
  border-radius: 8px;
  cursor: pointer;
  border: 1px solid var(--border-color);
  transition: transform 0.2s;
}
.message-image:hover {
  transform: scale(1.02);
}
.message-file {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 13px;
  color: var(--text-primary);
}
.image-preview-container {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
#imagePreviewImg {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}
.image-preview-close {
  position: absolute;
  top: -40px;
  right: -40px;
  background: var(--bg-secondary);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}
@media (max-width: 768px) {
  .attachment-image {
    width: 60px;
    height: 60px;
  }
  
  .attachment-file {
    max-width: 150px;
  }
  
  .message-image {
    max-width: 200px;
    max-height: 200px;
  }
  
  .image-preview-close {
    top: 10px;
    right: 10px;
  }
}
/* ==================== 欢迎界面样式 - Google Gemini 风格 ==================== */
.welcome-screen {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px 24px;
  overflow: hidden;
}
.welcome-content {
  max-width: 700px;
  width: 100%;
  text-align: center;
  animation: welcomeFadeIn 0.6s ease-out;
}
@keyframes welcomeFadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
/* 问候语 */
.welcome-greeting {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 400;
}
/* 主标题 */
.welcome-title {
  font-size: 42px;
  font-weight: 400;
  margin-bottom: 32px;
  line-height: 1.2;
}
.gradient-text {
  background: linear-gradient(135deg, #8ab4f8 0%, #c58af9 50%, #f28b82 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
/* Gem 介绍区域 */
.gem-intro {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 32px;
  padding: 16px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  max-width: 450px;
  margin-left: auto;
  margin-right: auto;
}
.gem-intro-icon {
  font-size: 36px;
  flex-shrink: 0;
}
.gem-intro-info {
  text-align: left;
}
.gem-intro-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.gem-intro-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
/* 快捷建议卡片 */
.suggestion-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 24px;
}
.suggestion-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
}
.suggestion-card:hover {
  background: var(--bg-hover);
  border-color: var(--accent-blue);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}
.suggestion-icon {
  font-size: 20px;
  flex-shrink: 0;
}
.suggestion-text {
  font-size: 13px;
  color: var(--text-primary);
  line-height: 1.4;
}
/* 功能提示标签 */
.welcome-features {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}
.feature-tag {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--bg-input);
  border-radius: 20px;
  font-size: 12px;
  color: var(--text-secondary);
}
.feature-tag svg {
  opacity: 0.7;
}
/* 响应式调整 */
@media (max-width: 768px) {
  .welcome-title {
    font-size: 28px;
    margin-bottom: 24px;
  }
  
  .suggestion-cards {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  
  .suggestion-card {
    padding: 12px 14px;
  }
  
  .welcome-features {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }
  
  .gem-intro {
    flex-direction: column;
    text-align: center;
    padding: 14px 16px;
  }
  
  .gem-intro-info {
    text-align: center;
  }
}
@media (max-width: 480px) {
  .welcome-title {
    font-size: 24px;
  }
  
  .welcome-content {
    padding: 0 4px;
  }
  
  .suggestion-text {
    font-size: 12px;
  }
}

/* ==================== 发送/停止按钮切换 ==================== */
.send-btn .stop-icon {
  display: none;
}
.send-btn.streaming .send-icon {
  display: none;
}
.send-btn.streaming .stop-icon {
  display: block;
}
.send-btn.streaming {
  background: var(--danger-red);
}
.send-btn.streaming:hover:not(:disabled) {
  background: #e06b63;
}
/* 滚动到底部按钮 */
.scroll-to-bottom-btn {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  z-index: 100;
}
.scroll-to-bottom-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.scroll-to-bottom-btn.visible {
  display: flex;
}