/* ============================================================
   肯森特AI — 聊天样式：消息气泡、输入区域、文件标签
   ============================================================ */

/* ---- 聊天滚动区 ---- */
.chat-scroll {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.chat-inner {
  width: 100%;
  max-width: var(--chat-max-width);
  padding: var(--space-5) 40px var(--space-5);
}

/* ---- 消息 ---- */
.msgs {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.msg {
  display: flex;
  flex-direction: column;
}

/* 用户消息：右对齐 */
.msg.user {
  align-items: flex-end;
}

.msg.user .bub {
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-2xl) var(--radius-sm) var(--radius-2xl) var(--radius-2xl);
  padding: 10px var(--space-4);
  font-size: var(--text-base);
  box-shadow: 0 2px 8px rgba(0, 122, 255, .25);
}

/* AI消息：左对齐 */
.msg.assistant {
  align-items: flex-start;
}

.msg.assistant .bub {
  font-size: var(--text-base);
  color: var(--text-primary);
  line-height: 1.75;
}

.msg.assistant .bub h3 {
  font-size: 15px;
  font-weight: 600;
  margin: var(--space-4) 0 6px;
  color: var(--color-gray-900);
}

/* ---- 加载动画 ---- */
.loading {
  display: inline-flex;
  gap: var(--space-1);
  padding: 2px 0;
}

.loading span {
  width: 5px;
  height: 5px;
  background: var(--text-muted);
  border-radius: 50%;
  animation: dot 1.4s infinite;
}

.loading span:nth-child(2) { animation-delay: .2s; }
.loading span:nth-child(3) { animation-delay: .4s; }

@keyframes dot {
  0%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-7px); }
}

/* ---- Markdown 渲染 ---- */
.bub h1 { font-size: var(--text-2xl); font-weight: 700; margin: var(--space-4) 0 var(--space-2); color: var(--color-gray-900); }
.bub h2 { font-size: 17px; font-weight: 600; margin: 14px 0 6px; color: var(--color-gray-900); padding-bottom: var(--space-1); border-bottom: 1px solid var(--border-color); }
.bub h3 { font-size: 15px; font-weight: 600; margin: var(--space-3) 0 var(--space-1); color: var(--text-primary); }
.bub h4 { font-size: var(--text-base); font-weight: 600; margin: 10px 0 var(--space-1); color: var(--color-gray-700); }
.bub p { margin: 6px 0; }
.bub ul, .bub ol { margin: 6px 0; padding-left: var(--space-5); }
.bub li { margin: 3px 0; }
.bub code { background: var(--bg-tertiary); padding: 1px 5px; border-radius: 3px; font-size: var(--text-sm); font-family: var(--font-mono); }
.bub pre { background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: var(--space-3); overflow-x: auto; margin: var(--space-2) 0; }
.bub pre code { background: none; padding: 0; }
.bub table {
  border-collapse: collapse;
  width: 100%;
  margin: var(--space-2) 0;
  font-size: var(--text-sm);
}
.bub th, .bub td {
  border: 1px solid var(--color-gray-300);
  padding: 6px 10px;
  text-align: left;
}
.bub th {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 600;
}
.bub tbody tr:nth-child(even) {
  background: var(--bg-secondary);
}
.bub tbody tr:hover {
  background: var(--color-primary-light);
}
.bub blockquote { margin: var(--space-2) 0; padding: 6px 14px; border-left: 3px solid var(--color-primary); background: var(--bg-secondary); color: var(--text-secondary); }
.bub strong { font-weight: 600; color: var(--color-gray-900); }
.bub hr { border: none; border-top: 1px solid var(--border-color); margin: var(--space-3) 0; }
.bub a { color: var(--color-primary); text-decoration: underline; }

/* ---- 输入区域 ---- */
.inp-area {
  padding: 0 40px var(--space-8);
  display: flex;
  justify-content: center;
  flex-shrink: 0;
}

.inp-wrap {
  width: 100%;
  max-width: var(--chat-max-width);
  min-height: 160px;
  background: rgba(255, 255, 255, .82);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-3xl);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  transition: border-color .2s, box-shadow .2s;
}

.inp-wrap:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 4px 20px var(--color-primary-glow);
}

.inp-body {
  flex: 1;
  padding: var(--space-5) var(--space-5) 0;
}

.inp-body textarea {
  width: 100%;
  min-height: 80px;
  border: none;
  outline: none;
  resize: none;
  font-size: var(--text-base);
  font-family: inherit;
  line-height: 1.6;
  color: var(--text-primary);
  background: transparent;
}

.inp-body textarea::placeholder {
  color: var(--text-muted);
}

.tag-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: var(--space-2);
}

.ftag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 3px 10px;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  color: var(--color-primary);
}

.ftag .x {
  cursor: pointer;
  opacity: .6;
  font-size: 15px;
}

.ftag .x:hover { opacity: 1; }

.inp-bar {
  padding: 0 var(--space-5) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.bar-r {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.btn-att {
  font-size: 18px;
  color: var(--text-secondary);
  cursor: pointer;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  transition: color var(--transition-fast);
}

.btn-att:hover { color: var(--color-gray-700); }
.btn-att input { display: none; }

.btn-send {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: var(--gradient-send);
  color: #fff;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition-fast);
}

.btn-send:hover { opacity: .92; }
.btn-send:disabled { opacity: .5; cursor: not-allowed; }

/* ---- 汉堡菜单按钮 ---- */
.btn-hamburger {
  display: none;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 20px;
  align-items: center;
  justify-content: center;
}

/* ---- 消息行布局（含头像） ---- */
.msg-row {
  display: flex;
  align-items: flex-end;
  gap: 20px;
  width: 100%;
}

/* 用户行：头像在气泡右侧外部 */
.msg.user .msg-row {
  flex-direction: row;
  justify-content: flex-end;
}

/* AI行：头像在气泡左侧外部 */
.msg.assistant .msg-row {
  flex-direction: row;
}

/* 用户气泡靠右，限制宽度避免占满全屏 */
.msg.user .msg-row .bub {
  max-width: 65%;
}

/* AI气泡靠左，限制宽度 */
.msg.assistant .msg-row .bub {
  max-width: 75%;
}

.avatar {
  width: 38px; height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}

.user-avatar {
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
}

.ai-avatar {
  background: transparent;
}

.ai-avatar svg,
.ai-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---- 文件卡片（用户消息中） ---- */
.file-card {
  display: flex !important;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4) !important;
  background: var(--color-primary-light) !important;
  border-radius: var(--radius-xl) !important;
}

/* 用户蓝色气泡内的文件卡片改为白底，保证可读 */
.msg.user .bub.file-card {
  background: #fff !important;
  color: var(--text-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, .08);
}

.file-card-icon {
  font-size: 28px;
  flex-shrink: 0;
}

.file-card-info {
  min-width: 0;
}

.file-card-name {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-card-meta {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: 2px;
}

/* ---- 上传进度卡片 ---- */
.upload-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}

.upload-card.done {
  border-color: var(--color-success);
  background: #f0fdf4;
}

[data-theme="dark"] .upload-card.done {
  background: rgba(16, 185, 129, 0.08);
}

.upload-icon { font-size: 28px; flex-shrink: 0; }

.upload-info { flex: 1; min-width: 0; }

.upload-name {
  font-size: 13px; font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.upload-meta {
  font-size: 11px; color: var(--text-muted); margin-top: 2px;
}

.upload-progress {
  height: 4px; background: var(--border-color);
  border-radius: 2px; margin-top: 6px; overflow: hidden;
}

.upload-bar {
  height: 100%; background: var(--color-primary);
  border-radius: 2px; transition: width .3s;
}

/* ---- 访客登录提示栏 ---- */
.guest-login-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-3);
  background: linear-gradient(135deg, #f0f4ff 0%, #ede9fe 100%);
  border: 1px solid var(--color-primary-light);
  border-radius: var(--radius-xl);
  font-size: var(--text-sm);
  color: var(--color-primary);
  animation: slideUp .3s ease;
}

.guest-login-bar span { font-weight: 500; }

.guest-login-bar .btn-primary {
  padding: 6px 16px;
  font-size: 13px;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: #fff;
  border: none;
  cursor: pointer;
  font-weight: 600;
}

.guest-login-bar .btn-secondary {
  padding: 6px 16px;
  font-size: 13px;
  border-radius: var(--radius-md);
  background: #fff;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  cursor: pointer;
  font-weight: 500;
}

.guest-login-bar .btn-primary:hover { opacity: .9; }
.guest-login-bar .btn-secondary:hover { background: var(--color-primary-light); }

@keyframes slideUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---- 话题标题栏 ---- */
.topic-bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-4);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  font-size: var(--text-sm);
}

.topic-bar-icon { font-size: 16px; flex-shrink: 0; }

.topic-bar-text {
  font-weight: 600;
  color: var(--color-gray-900);
}

.topic-bar-file {
  margin-left: auto;
  font-size: var(--text-xs);
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  padding: 2px 8px;
  border-radius: var(--radius-md);
}

/* ---- 状态指示器 ---- */
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 14px;
  background: var(--color-primary-light);
  border: 1px solid var(--color-primary);
  border-radius: 20px;
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 500;
}

.status-chip .status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  animation: pulse-dot 2s infinite;
}

.status-chip.status-thinking {
  background: var(--bg-secondary);
  border-color: var(--border-color);
  color: var(--text-secondary);
}
.status-chip.status-thinking .status-dot { background: var(--text-muted); }

.status-chip.status-searching {
  background: rgba(245, 158, 11, 0.08);
  border-color: #f59e0b; color: #d97706;
}

.status-chip.status-searching .status-dot { background: #f59e0b; }

.status-chip.status-generating {
  background: rgba(16, 185, 129, 0.08);
  border-color: #10b981; color: #059669;
}

.status-chip.status-generating .status-dot { background: #10b981; }

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ---- 拖拽上传覆盖层 ---- */
.inp-wrap { position: relative; }

.inp-wrap.drag-over {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.inp-wrap.drag-over::after {
  content: '释放以上传文件';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  pointer-events: none;
  z-index: 10;
}

.drop-zone {
  position: fixed;
  inset: 0;
  background: rgba(0, 122, 255, 0.08);
  backdrop-filter: blur(2px);
  border: 3px dashed var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5000;
  animation: dz-fade-in .2s ease;
}

@keyframes dz-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.drop-zone-content {
  text-align: center;
  background: var(--bg-primary);
  padding: 40px 60px;
  border-radius: var(--radius-3xl);
  box-shadow: var(--shadow-lg);
}

.drop-zone-icon {
  font-size: 48px;
  margin-bottom: var(--space-4);
}

.drop-zone-text {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.drop-zone-hint {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

/* ---- 移动端侧边栏抽屉 ---- */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .3);
  z-index: 500;
}

/* Save-to-deliverable button on messages */
.msg-tools {
  margin-top: 4px;
  margin-left: 36px;
  opacity: 0;
  transition: opacity .15s;
}
.msg.assistant:hover .msg-tools {
  opacity: 1;
}
.btn-save-msg {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 8px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--bg-primary);
  color: var(--text-muted);
  font-size: 11px;
  cursor: pointer;
  transition: color .15s, border-color .15s;
}
.btn-save-msg:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

/* ---- 意图选择卡片 ---- */
.intent-options-card {
  padding: 4px 0;
}
.intent-options-head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
}
.intent-options-icon {
  font-size: 28px;
  flex-shrink: 0;
}
.intent-options-info {
  flex: 1;
  min-width: 0;
}
.intent-options-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
  word-break: break-all;
}
.intent-options-domains {
  font-size: 12px;
  color: var(--text-secondary);
}
.intent-options-prompt {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.intent-options-grid {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.intent-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  cursor: pointer;
  transition: border-color .15s, background .15s, transform .1s;
  background: var(--bg-primary);
}
.intent-option:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  transform: translateX(2px);
}
.intent-option-left {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 0;
}
.intent-option-icon {
  font-size: 22px;
  flex-shrink: 0;
}
.intent-option-body {
  flex: 1;
  min-width: 0;
}
.intent-option-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}
.intent-option-desc {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 2px;
  line-height: 1.4;
}
.intent-option-arrow {
  font-size: 16px;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: transform .15s;
}
/* ---- 省份选择器 ---- */
.pill-select {
  padding: 5px 8px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 13px;
  cursor: pointer;
  outline: none;
  min-width: 90px;
}
.pill-select:focus {
  border-color: var(--color-primary);
}

.intent-option:hover .intent-option-arrow {
  transform: translateX(3px);
  color: var(--color-primary);
}