/* ============================================
   设计系统 - 简约高端风格
   参考: Linear / Vercel / Notion
   ============================================ */
:root {
    /* 中性色阶 */
    --bg: #fafafa;
    --surface: #ffffff;
    --surface-hover: #f5f5f5;
    --text: #111827;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;

    /* 边框 */
    --border: #e5e7eb;
    --border-light: #f0f0f0;

    /* 主题色 - 深靛蓝,克制而有品质感 */
    --accent: #4f46e5;
    --accent-hover: #4338ca;
    --accent-soft: #eef2ff;
    --accent-text: #4f46e5;

    /* 语义色 */
    --success: #059669;
    --success-soft: #ecfdf5;
    --danger: #dc2626;
    --danger-soft: #fef2f2;
    --warning: #d97706;
    --warning-soft: #fffbeb;

    /* 圆角 */
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;

    /* 阴影 - 极细微,营造层次 */
    --shadow-xs: 0 1px 2px rgba(0,0,0,.03);
    --shadow-sm: 0 1px 3px rgba(0,0,0,.04), 0 1px 2px rgba(0,0,0,.02);
    --shadow: 0 2px 8px rgba(0,0,0,.04), 0 1px 2px rgba(0,0,0,.02);
    --shadow-lg: 0 8px 24px rgba(0,0,0,.06), 0 2px 4px rgba(0,0,0,.02);

    /* 字体 */
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}

/* ===== 基础 ===== */
* { box-sizing: border-box; }
body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* ===== 导航栏 ===== */
.app-navbar {
    background: rgba(255,255,255,.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border-light);
    height: 56px;
    position: sticky;
    top: 0;
    z-index: 1000;
}
.app-navbar .container { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.app-brand {
    display: flex; align-items: center; gap: 8px;
    font-size: 1rem; font-weight: 600; color: var(--text);
    letter-spacing: -.01em;
}
.app-brand:hover { color: var(--text); }
.app-brand-icon {
    width: 28px; height: 28px; border-radius: 8px;
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: .9rem;
}
.nav-actions { display: flex; align-items: center; gap: 12px; }
.credit-pill {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 6px 12px; border-radius: 20px;
    background: var(--accent-soft); color: var(--accent);
    font-size: .85rem; font-weight: 500;
    transition: background .15s;
}
.credit-pill:hover { background: #e0e7ff; }

/* 头像 */
.avatar {
    width: 32px; height: 32px; border-radius: 50%;
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    color: #fff; display: inline-flex; align-items: center; justify-content: center;
    font-weight: 600; font-size: .8rem; cursor: pointer;
    border: 2px solid #fff; box-shadow: var(--shadow-xs);
}

/* 下拉菜单 */
.dropdown-menu {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    padding: 4px;
    min-width: 180px;
}
.dropdown-item {
    border-radius: 6px;
    padding: 8px 12px;
    font-size: .875rem;
    color: var(--text-secondary);
    display: flex; align-items: center; gap: 8px;
}
.dropdown-item:hover { background: var(--surface-hover); color: var(--text); }
.dropdown-item.text-danger:hover { background: var(--danger-soft); }
.dropdown-divider { margin: 4px 0; border-color: var(--border-light); }

/* ===== 卡片 ===== */
.card {
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    box-shadow: var(--shadow-xs);
    overflow: hidden;
}
.card-body { padding: 24px; }
.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border-light);
    padding: 16px 24px;
    font-weight: 600;
    font-size: .95rem;
}

/* ===== 按钮 ===== */
.btn { border-radius: var(--radius-sm); font-weight: 500; font-size: .875rem; transition: all .15s; padding: 8px 16px; }
.btn-sm { padding: 6px 12px; font-size: .8125rem; }

.btn-primary {
    background: var(--text);
    border-color: var(--text);
    color: #fff;
}
.btn-primary:hover {
    background: #1f2937;
    border-color: #1f2937;
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}
.btn-primary:active { transform: translateY(0); }

.btn-outline-secondary {
    border-color: var(--border);
    color: var(--text-secondary);
    background: var(--surface);
}
.btn-outline-secondary:hover {
    border-color: #d1d5db;
    background: var(--surface-hover);
    color: var(--text);
}

.btn-accent {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.btn-accent:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

.btn-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    font-size: .875rem;
}
.btn-link:hover { color: var(--accent-hover); }

/* ===== 表单 ===== */
.form-control, .form-select {
    border-color: var(--border);
    border-radius: var(--radius-sm);
    padding: 9px 12px;
    font-size: .875rem;
    color: var(--text);
    background: var(--surface);
    transition: border-color .15s, box-shadow .15s;
}
.form-control:focus, .form-select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(79,70,229,.08);
}
.form-control::placeholder { color: var(--text-muted); }
.form-label { font-size: .85rem; font-weight: 500; color: var(--text-secondary); margin-bottom: 6px; }
.input-group-text {
    border-color: var(--border);
    background: var(--bg);
    color: var(--text-muted);
    border-radius: var(--radius-sm);
}
.input-group .form-control { border-left: none; }
.input-group .form-control:focus { box-shadow: none; border-color: var(--border); }
.input-group:focus-within .input-group-text { border-color: var(--accent); }

/* ===== 表格 ===== */
.table { margin-bottom: 0; }
.table th {
    font-weight: 500;
    color: var(--text-muted);
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    border-bottom: 1px solid var(--border);
    padding: 12px 16px;
}
.table td { padding: 14px 16px; border-bottom: 1px solid var(--border-light); color: var(--text); font-size: .875rem; }
.table-hover tbody tr:hover { background: var(--surface-hover); }
.table-hover tbody tr:last-child td { border-bottom: none; }

/* ===== Badge ===== */
.badge {
    font-weight: 500;
    font-size: .7rem;
    padding: 4px 8px;
    border-radius: 6px;
    letter-spacing: .02em;
}

/* ===== 模态框 ===== */
.modal-content { border: 1px solid var(--border-light); border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.modal-header { border-bottom: 1px solid var(--border-light); padding: 20px 24px; }
.modal-body { padding: 24px; }
.modal-footer { border-top: 1px solid var(--border-light); padding: 16px 24px; }
.modal-title { font-weight: 600; font-size: 1.05rem; }
.btn-close { opacity: .5; }

/* ===== Toast ===== */
.toast { border-radius: var(--radius-sm); border: none; box-shadow: var(--shadow-lg); }

/* ===== 分页 ===== */
.pagination { gap: 4px; }
.page-link {
    border: none;
    color: var(--text-secondary);
    border-radius: 6px !important;
    padding: 6px 12px;
    font-size: .8125rem;
}
.page-link:hover { background: var(--surface-hover); color: var(--text); }
.page-item.active .page-link { background: var(--text); color: #fff; }
.page-item.disabled .page-link { color: var(--text-muted); background: transparent; }

/* ===== 页面标题 ===== */
.page-header { margin-bottom: 24px; }
.page-title { font-size: 1.5rem; font-weight: 600; letter-spacing: -.02em; margin: 0; }
.page-subtitle { color: var(--text-muted); font-size: .875rem; margin-top: 4px; }

/* ===== 管理后台侧边栏（固定不随内容滚动） ===== */
@media (min-width: 768px) {
    .sidebar > .position-sticky {
        top: 56px;
        height: calc(100vh - 56px);
        max-height: calc(100vh - 56px);
        overflow-y: auto;
    }
}

/* ===== 智能体卡片网格 ===== */
.agent-card {
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 20px;
    transition: all .2s;
    cursor: pointer;
    height: 100%;
}
.agent-card:hover {
    border-color: #d1d5db;
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}
.agent-card-icon {
    width: 44px; height: 44px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; font-weight: 600;
    margin-bottom: 12px;
}

/* ===== 聊天页 ===== */
.chat-layout { height: 100vh; display: flex; background: var(--surface); }
.conv-sidebar { width: 260px; min-width: 260px; border-right: 1px solid var(--border-light); background: var(--bg); display: flex; flex-direction: column; overflow: hidden; }

/* 侧边栏头部: 品牌 + 收起按钮 */
.conv-side-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 12px 10px 16px; }
.side-icon-btn {
    width: 30px; height: 30px; border: none; border-radius: 8px; background: transparent;
    color: var(--text-muted); display: inline-flex; align-items: center; justify-content: center; cursor: pointer;
}
.side-icon-btn:hover { background: var(--surface-hover); color: var(--text); }

/* 新建对话按钮 */
.conv-side-new { padding: 0 12px 10px; }
.btn-new-chat {
    width: 100%; border: 1px solid var(--border); background: var(--surface); border-radius: 10px;
    padding: 9px 12px; font-size: .85rem; color: var(--text-secondary); cursor: pointer;
    display: flex; align-items: center; justify-content: center; gap: 6px; transition: all .15s;
}
.btn-new-chat:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

/* 会话列表占据剩余空间并独立滚动 */
#convList { flex: 1; overflow-y: auto; padding-bottom: 8px; }

/* 侧边栏底部用户信息 */
.conv-side-foot { border-top: 1px solid var(--border-light); padding: 10px 12px; }
.conv-side-foot .dropdown { width: 100%; }
.conv-user { display: flex; align-items: center; gap: 10px; padding: 6px 8px; border-radius: 10px; cursor: pointer; }
.conv-user:hover { background: var(--surface-hover); }
.conv-user .avatar { flex-shrink: 0; }
.conv-user-info { flex: 1; min-width: 0; }
.conv-user-name { font-size: .82rem; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.conv-user-credit { font-size: .72rem; color: var(--accent); display: inline-flex; align-items: center; gap: 2px; }
.conv-user-more { color: var(--text-muted); font-size: .8rem; }
.conv-item {
    cursor: pointer;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin: 2px 8px;
    transition: background .12s;
}
.conv-item:hover { background: var(--surface-hover); }
.conv-item.active { background: var(--accent-soft); }
.conv-item.active .conv-title { color: var(--accent); }

.chat-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.chat-header {
    border-bottom: 1px solid var(--border-light);
    padding: 12px 24px;
    display: flex; align-items: center; gap: 8px;
    background: var(--surface);
}
/* 侧边栏收起后显示的展开按钮(仅桌面端) */
.conv-expand {
    display: none; width: 32px; height: 32px; border-radius: 8px; flex-shrink: 0;
    border: 1px solid var(--border); background: var(--surface);
    color: var(--text-secondary); cursor: pointer; align-items: center; justify-content: center;
}
.conv-expand:hover { color: var(--text); background: var(--surface-hover); }
.chat-messages { flex: 1; overflow-y: auto; padding: 24px 0; }
.chat-messages-inner { max-width: 800px; margin: 0 auto; padding: 0 24px; }

/* 大屏充分利用横向空间 */
@media (min-width: 1600px) {
    .chat-messages-inner, .chat-input-box { max-width: 960px; }
}

/* 一条消息: 气泡 + 独立工具行 */
.chat-msg { display: flex; flex-direction: column; margin-bottom: 16px; }
.chat-msg.user { align-items: flex-end; }
.chat-msg.assistant { align-items: stretch; }
.chat-bubble {
    max-width: 80%; padding: 12px 16px; border-radius: var(--radius);
    word-wrap: break-word; white-space: pre-wrap;
    line-height: 1.65; font-size: .9rem;
}
.chat-bubble.user {
    background: var(--accent-soft);
    color: var(--text);
    border-bottom-right-radius: 4px;
}
.chat-bubble.assistant {
    background: transparent;
    border: none;
    max-width: 100%;
    padding: 4px 0;
}
.chat-bubble.error { background: var(--danger-soft); border: 1px solid #fecaca; color: var(--danger); }

.chat-input-area { padding: 0 24px 10px; background: var(--surface); }
.chat-input-box {
    max-width: 800px; margin: 0 auto;
    border: 1px solid var(--border); border-radius: 20px; background: var(--surface);
    padding: 12px 16px 6px; box-shadow: var(--shadow-xs);
    transition: border-color .15s, box-shadow .15s;
}
.chat-input-box:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(79,70,229,.08); }
.chat-textarea {
    width: 100%; border: none; background: transparent; padding: 0;
    font-size: .92rem; resize: none; max-height: 160px;
}
.chat-textarea:focus { outline: none; box-shadow: none; }
.chat-input-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: 4px; }

/* 输入框内模型选择器 */
.model-picker {
    font-size: .72rem; color: var(--text-secondary);
    background: var(--bg); border: 1px solid var(--border-light);
    border-radius: 999px; padding: 3px 8px; cursor: pointer;
    max-width: 180px; outline: none; transition: all .15s;
}
.model-picker:hover { border-color: var(--accent); }
.model-picker option { font-size: .8rem; }

/* 输入框内智能体标识(点击切换智能体) */
.agent-chip {
    display: inline-flex; align-items: center; gap: 5px; min-width: 0;
    font-size: .75rem; color: var(--text-secondary);
    background: var(--bg); border: 1px solid var(--border-light);
    border-radius: 999px; padding: 4px 10px; transition: all .15s;
}
.agent-chip span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.agent-chip:hover { color: var(--accent); border-color: var(--accent); }

/* 圆形发送按钮 */
.send-btn {
    width: 32px; height: 32px; border-radius: 50%; border: none; flex-shrink: 0;
    background: var(--accent); color: #fff; cursor: pointer;
    display: inline-flex; align-items: center; justify-content: center; font-size: .9rem;
    transition: background .15s;
}
.send-btn:hover { background: var(--accent-hover); }
.send-btn:disabled { background: #d1d5db; cursor: default; }

/* 输入框下方提示语 */
.ai-disclaimer { text-align: center; font-size: .72rem; color: var(--text-muted); margin-top: 8px; }
.credit-info { font-size: .75rem; color: var(--text-muted); margin-top: 6px; }

/* 消息操作栏(纯图标按钮, 独立于气泡下方一行) - 悬停消息时显现, 触屏设备常显 */
.msg-actions { display: flex; align-items: center; gap: 4px; margin-top: 4px; opacity: 0; transition: opacity .15s; }
.chat-msg:hover .msg-actions { opacity: 1; }
.msg-action-btn {
    display: inline-flex; align-items: center; justify-content: center;
    border: none; background: transparent; cursor: pointer;
    color: var(--text-muted); font-size: .9rem; line-height: 1;
    padding: 4px 6px; border-radius: 6px; transition: all .15s;
}
.msg-action-btn:hover { background: rgba(0,0,0,.06); color: var(--text-secondary); }
.msg-action-btn.copied { color: var(--success); }
@media (hover: none) { .msg-actions { opacity: 1; } }

/* ===== Markdown 渲染(AI 回复) ===== */
.msg-content.md { white-space: normal; }
.msg-content.md > :first-child { margin-top: 0; }
.msg-content.md > :last-child { margin-bottom: 0; }
.msg-content.md p { margin: 0 0 8px; }
.msg-content.md ul, .msg-content.md ol { margin: 0 0 8px; padding-left: 20px; }
.msg-content.md li { margin: 2px 0; }
.msg-content.md h1, .msg-content.md h2, .msg-content.md h3,
.msg-content.md h4, .msg-content.md h5 { margin: 14px 0 8px; font-weight: 600; line-height: 1.4; }
.msg-content.md h1 { font-size: 1.15rem; }
.msg-content.md h2 { font-size: 1.08rem; }
.msg-content.md h3 { font-size: 1rem; }
.msg-content.md h4, .msg-content.md h5 { font-size: .92rem; }
.msg-content.md code {
    background: rgba(0,0,0,.05); padding: 2px 5px; border-radius: 4px;
    font-size: .84em; font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}
.msg-content.md a { color: var(--accent); word-break: break-all; }
.msg-content.md blockquote {
    margin: 8px 0; padding: 2px 12px;
    border-left: 3px solid var(--border); color: var(--text-secondary);
}
.msg-content.md table { border-collapse: collapse; margin: 8px 0; font-size: .84rem; display: block; overflow-x: auto; max-width: 100%; }
.msg-content.md th, .msg-content.md td { border: 1px solid var(--border); padding: 6px 12px; text-align: left; }
.msg-content.md th { background: var(--bg); font-weight: 600; }
.msg-content.md hr { border: none; border-top: 1px solid var(--border); margin: 12px 0; }
.msg-content.md img { max-width: 100%; border-radius: 8px; }

/* 代码块(带语言标识 + 复制按钮) */
.code-block { margin: 8px 0; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; background: #f6f8fa; }
.code-block-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 5px 8px 5px 12px; background: var(--surface);
    border-bottom: 1px solid var(--border-light);
    font-size: .72rem; color: var(--text-muted);
}
.code-lang { font-family: Consolas, Menlo, monospace; text-transform: lowercase; }
.code-copy-btn {
    border: none; background: transparent; cursor: pointer;
    color: var(--text-muted); font-size: .72rem; line-height: 1.2;
    display: inline-flex; align-items: center; gap: 3px;
    padding: 3px 8px; border-radius: 6px; transition: all .15s;
}
.code-copy-btn:hover { background: var(--surface-hover); color: var(--text); }
.code-copy-btn.copied { color: var(--success); }
.code-block pre { margin: 0; padding: 12px 14px; overflow-x: auto; font-size: .82rem; line-height: 1.55; }
.code-block pre code { background: transparent; padding: 0; font-size: inherit; }

/* 回到最新悬浮按钮(sticky 在消息滚动区内, 不受输入框高度影响) */
.scroll-bottom-btn {
    position: sticky; bottom: 12px; z-index: 20;
    width: 34px; height: 34px; border-radius: 50%;
    margin-left: auto; margin-right: 24px;
    border: 1px solid var(--border); background: var(--surface);
    color: var(--text-secondary); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    box-shadow: var(--shadow-lg); opacity: 0; transform: translateY(6px);
    pointer-events: none; transition: opacity .2s, transform .2s, color .15s, border-color .15s;
}
.scroll-bottom-btn.show { opacity: 1; transform: none; pointer-events: auto; }
.scroll-bottom-btn:hover { color: var(--accent); border-color: var(--accent); }

/* 桌面端侧边栏折叠 */
.conv-sidebar { transition: width .2s ease, min-width .2s ease; }
@media (min-width: 769px) {
    .chat-layout.conv-collapsed .conv-sidebar { width: 0; min-width: 0; border-right: none; }
    .chat-layout.conv-collapsed .conv-expand { display: inline-flex; }
}

/* 会话列表日期分组标签 */
.conv-group-label {
    font-size: .68rem; font-weight: 500; color: var(--text-muted);
    padding: 12px 20px 4px; letter-spacing: .03em; user-select: none;
}
.conv-group-label:first-child { padding-top: 4px; }

/* 思考过程折叠块 */
.think-block { margin-bottom: 8px; background: var(--accent-soft); border: 1px solid rgba(79,70,229,.25); border-radius: 8px; font-size: .85rem; overflow: hidden; }
.think-header { display: flex; align-items: center; gap: 6px; padding: 6px 10px; color: var(--accent); cursor: pointer; user-select: none; font-weight: 500; }
.think-toggle { margin-left: auto; transition: transform .2s ease; font-size: .7rem; }
.think-body { padding: 6px 10px 8px; color: var(--text-secondary); white-space: pre-wrap; word-break: break-word; max-height: 320px; overflow-y: auto; border-top: 1px solid rgba(79,70,229,.15); }
.think-block.collapsed .think-body { display: none; }
.think-block.collapsed .think-toggle { transform: rotate(-90deg); }

/* 打字动画 */
.typing-indicator { display: flex; gap: 4px; align-items: center; padding: 4px 0; }
.typing-indicator span {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--text-muted);
    animation: typing 1.4s infinite ease-in-out;
}
.typing-indicator span:nth-child(2) { animation-delay: .2s; }
.typing-indicator span:nth-child(3) { animation-delay: .4s; }
@keyframes typing { 0%,60%,100% { transform: translateY(0); opacity: .4; } 30% { transform: translateY(-5px); opacity: 1; } }

/* ===== 工具类 ===== */
.text-muted { color: var(--text-muted) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.cursor-pointer { cursor: pointer; }
.transition-all { transition: all .15s; }

/* 滚动条美化 */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #d1d5db; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #9ca3af; }

/* ===== 移动端 ===== */
@media (max-width: 768px) {
    /* 导航栏 */
    .app-navbar { height: 52px; }
    .app-navbar .container { padding: 0 12px; }
    .app-brand span { font-size: .9rem; }
    .app-brand-icon { width: 24px; height: 24px; font-size: .75rem; border-radius: 6px; }
    .nav-actions { gap: 8px; }
    .credit-pill { padding: 4px 10px; font-size: .78rem; }
    .avatar { width: 28px; height: 28px; font-size: .7rem; }

    /* 页面容器 */
    .container { padding-left: 12px; padding-right: 12px; }
    .py-5 { padding-top: 16px !important; padding-bottom: 16px !important; }

    /* 页面标题 */
    .page-header { flex-direction: column; align-items: flex-start !important; gap: 12px; margin-bottom: 16px; }
    .page-title { font-size: 1.25rem; }
    .page-subtitle { font-size: .8rem; }
    .page-header > div:last-child,
    .page-header .d-flex:last-child { width: 100%; flex-wrap: wrap; }

    /* 搜索框 */
    .page-header input.form-control { width: 100% !important; max-width: 100% !important; }

    /* 卡片 */
    .card-body { padding: 16px; }
    .card-header { padding: 12px 16px; font-size: .9rem; }

    /* 模态框 */
    .modal-body { padding: 16px; }
    .modal-header { padding: 14px 16px; }
    .modal-title { font-size: .95rem; }

    /* 表格 */
    .table th, .table td { padding: 10px 8px; font-size: .8rem; }
    .table th { font-size: .68rem; }

    /* 智能体卡片 */
    .agent-card { padding: 16px; }
    .agent-card-icon { width: 36px; height: 36px; font-size: 1rem; }
    .agent-card h6 { font-size: .9rem; }

    /* 对话页 */
    .chat-layout { height: 100vh; }
    .conv-sidebar {
        position: fixed; top: 0; left: 0; bottom: 0;
        width: 280px; z-index: 1050;
        transform: translateX(-100%);
        transition: transform .25s ease;
        box-shadow: var(--shadow-lg);
    }
    .conv-sidebar.show { transform: translateX(0); }
    .chat-messages { padding: 16px 0; }
    .chat-messages-inner { padding: 0 12px; }
    .chat-input-area { padding: 8px 12px; }
    .chat-textarea { font-size: .85rem; }
    .chat-header { padding: 10px 12px; }
    .chat-bubble { max-width: 90%; font-size: .85rem; padding: 10px 12px; }
    .chat-bubble.assistant { max-width: 100%; padding: 4px 0; }

    /* 移动端遮罩层 */
    .sidebar-overlay {
        position: fixed; inset: 0; top: 0;
        background: rgba(0,0,0,.3); z-index: 1040;
        opacity: 0; pointer-events: none; transition: opacity .25s;
    }
    .sidebar-overlay.show { opacity: 1; pointer-events: auto; }

    /* 移动端侧边栏切换按钮 */
    .conv-toggle {
        display: flex !important;
        align-items: center; justify-content: center;
        width: 32px; height: 32px; border-radius: 8px;
        border: 1px solid var(--border); background: var(--surface);
        color: var(--text-secondary); cursor: pointer;
    }

    /* 积分余额卡 */
    .balance-card { padding: 20px; }
    .balance-amount { font-size: 1.8rem; }
    .balance-stats { flex-direction: column; gap: 8px; }

    /* 个人设置 */
    .col-form-label { font-size: .8rem; }
    .profile-avatar { width: 48px; height: 48px; font-size: 1.2rem; }

    /* 分页 */
    .pagination { flex-wrap: wrap; }
    .page-link { padding: 4px 8px; font-size: .75rem; }
}

/* 超小屏 */
@media (max-width: 380px) {
    .app-brand span { display: none; }
    .page-title { font-size: 1.1rem; }
    .chat-textarea { font-size: .8rem; }
}

/* 小屏显示侧边栏切换 */
.conv-toggle { display: none; }
@media (max-width: 768px) {
    .conv-toggle { display: flex !important; }
}