:root {
  --bg: #f1f5f9;
  --panel: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --muted: #64748b;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-soft: #dbeafe;
  --green: #059669;
  --green-soft: #d1fae5;
  --amber: #d97706;
  --amber-soft: #fef3c7;
  --red: #dc2626;
  --red-soft: #fee2e2;
  --sidebar-w: 240px;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 4px 16px rgba(15, 23, 42, .06);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
}
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: 14px; }
a { color: var(--primary); text-decoration: none; }

#app { display: flex; height: 100vh; overflow: hidden; }

/* ---------- 侧边栏 ---------- */
.sidebar {
  width: var(--sidebar-w);
  background: #0f172a;
  color: #cbd5e1;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}
.brand { display: flex; gap: 10px; align-items: center; padding: 18px 16px; border-bottom: 1px solid #1e293b; }
.brand-logo { font-size: 26px; }
.brand-title { font-size: 14px; font-weight: 600; color: #f1f5f9; }
.brand-sub { font-size: 11px; color: #64748b; margin-top: 1px; }
.nav { padding: 10px 8px; flex: 1; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 8px; color: #94a3b8;
  font-size: 14px; margin-bottom: 2px;
}
.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }
.nav-item:hover { background: #1e293b; color: #e2e8f0; }
.nav-item.active { background: var(--primary); color: #fff; }
.badge {
  margin-left: auto; background: var(--red); color: #fff;
  font-size: 11px; border-radius: 10px; padding: 0 7px; line-height: 18px;
}
.sidebar-foot { padding: 14px 16px; border-top: 1px solid #1e293b; font-size: 12px; }
.stat-row { display: flex; justify-content: space-between; padding: 3px 0; color: #94a3b8; }
.stat-row b { color: #e2e8f0; font-weight: 600; }
.dot-off { color: #f87171 !important; }
.dot-on { color: #4ade80 !important; }

/* ---------- 主区域 ---------- */
.main { flex: 1; overflow-y: auto; padding: 24px 32px; max-width: 1180px; margin: 0 auto; width: 100%; }

/* ---------- 通用组件 ---------- */
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--border); background: #fff; color: var(--text);
  padding: 7px 14px; border-radius: 8px; font-size: 13px; transition: all .15s;
}
.btn:hover { border-color: #cbd5e1; background: #f8fafc; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.green { background: var(--green); border-color: var(--green); color: #fff; }
.btn.green:hover { background: #047857; }
.btn.danger { color: var(--red); border-color: #fecaca; }
.btn.danger:hover { background: var(--red-soft); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn.sm { padding: 4px 10px; font-size: 12px; }

.page-title { font-size: 20px; font-weight: 700; margin-bottom: 4px; }
.page-sub { color: var(--muted); font-size: 13px; margin-bottom: 18px; }

.tag {
  display: inline-block; font-size: 11px; padding: 1px 8px; border-radius: 10px;
  background: var(--primary-soft); color: var(--primary-dark); margin-right: 6px;
}
.tag.green { background: var(--green-soft); color: var(--green); }
.tag.amber { background: var(--amber-soft); color: var(--amber); }
.tag.red { background: var(--red-soft); color: var(--red); }
.tag.gray { background: #f1f5f9; color: var(--muted); }

.empty { text-align: center; color: var(--muted); padding: 48px 0; }
.empty .big { font-size: 40px; margin-bottom: 10px; }

/* ---------- 问答页 ---------- */
.chat-wrap { display: flex; flex-direction: column; height: calc(100vh - 48px); }
.chat-head { margin-bottom: 12px; }
.chat-log { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 14px; padding: 4px 2px 16px; }
.msg { max-width: 86%; padding: 12px 16px; border-radius: 14px; white-space: pre-wrap; word-break: break-word; }
.msg.user { align-self: flex-end; background: var(--primary); color: #fff; border-bottom-right-radius: 4px; }
.msg.assistant { align-self: flex-start; background: #fff; border: 1px solid var(--border); border-bottom-left-radius: 4px; box-shadow: var(--shadow); }
.msg .blink { display: inline-block; width: 7px; height: 16px; background: var(--primary); animation: blink 1s infinite; vertical-align: middle; margin-left: 2px; border-radius: 2px; }

/* ---------- Markdown 渲染内容（问答气泡内） ---------- */
.msg.assistant p { margin: 0 0 8px; }
.msg.assistant p:last-child { margin-bottom: 0; }
.msg.assistant strong { font-weight: 700; }
.msg.assistant em { font-style: italic; }
.msg.assistant h1, .msg.assistant h2, .msg.assistant h3, .msg.assistant h4 {
  margin: 10px 0 6px; line-height: 1.4; font-weight: 700;
}
.msg.assistant h1 { font-size: 17px; }
.msg.assistant h2 { font-size: 15.5px; }
.msg.assistant h3, .msg.assistant h4 { font-size: 14.5px; }
.msg.assistant ul, .msg.assistant ol { margin: 4px 0 8px; padding-left: 22px; }
.msg.assistant li { margin: 3px 0; }
.msg.assistant blockquote {
  margin: 6px 0; padding: 4px 12px; border-left: 3px solid var(--primary);
  background: #f8fafc; color: var(--muted); border-radius: 0 8px 8px 0;
}
.msg.assistant code {
  background: #f1f5f9; border: 1px solid var(--border); border-radius: 4px;
  padding: 1px 5px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12.5px;
}
.msg.assistant pre {
  background: #0f172a; color: #e2e8f0; border-radius: 8px; padding: 10px 12px;
  overflow-x: auto; margin: 8px 0;
}
.msg.assistant pre code { background: none; border: none; color: inherit; padding: 0; }
.msg.assistant hr { border: none; border-top: 1px solid var(--border); margin: 10px 0; }
.msg.assistant a { text-decoration: underline; }
@keyframes blink { 50% { opacity: .2; } }
.msg .fallback-note { color: var(--amber); font-size: 12px; margin-bottom: 8px; }

.citations { max-width: 86%; align-self: flex-start; display: flex; flex-wrap: wrap; gap: 6px; margin-top: -4px; }
.citation {
  font-size: 12px; background: var(--primary-soft); color: var(--primary-dark);
  border: none; border-radius: 8px; padding: 4px 10px; cursor: pointer;
}
.citation:hover { background: #bfdbfe; }

.chat-input-bar {
  display: flex; gap: 10px; background: #fff; border: 1px solid var(--border);
  border-radius: 14px; padding: 10px 12px; box-shadow: var(--shadow);
}
.chat-input-bar textarea {
  flex: 1; border: none; outline: none; resize: none; font-size: 14px; line-height: 1.5;
  max-height: 120px; padding: 6px 2px;
}
.chat-send { align-self: flex-end; }
.sample-q { color: var(--primary); cursor: pointer; display: inline-block; margin: 4px 8px 0 0; font-size: 13px; border-bottom: 1px dashed #bfdbfe; }
.sample-q:hover { color: var(--primary-dark); }

/* ---------- 法规库 ---------- */
.lib-toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.lib-toolbar input[type=text], .lib-toolbar select {
  padding: 8px 12px; border: 1px solid var(--border); border-radius: 8px; outline: none; background: #fff;
}
.lib-toolbar input[type=text] { flex: 1; min-width: 220px; }
.reg-card { padding: 16px 18px; margin-bottom: 12px; }
.reg-card:hover { border-color: #bfdbfe; }
.reg-title { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.reg-meta { font-size: 12px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 8px; }
.reg-actions { display: flex; gap: 8px; }
.reg-detail { padding: 24px; }
.reg-detail h1 { font-size: 20px; margin-bottom: 6px; }
.reg-detail .meta-line { color: var(--muted); font-size: 13px; margin-bottom: 14px; }
.chapter { margin-bottom: 10px; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.chapter summary { padding: 10px 14px; cursor: pointer; font-weight: 600; background: #f8fafc; font-size: 13.5px; }
.chapter summary:hover { background: #f1f5f9; }
.chapter .articles { padding: 6px 14px 12px; }
.article { padding: 8px 0; border-bottom: 1px dashed #e2e8f0; font-size: 13.5px; }
.article:last-child { border-bottom: none; }
.article .num { color: var(--primary-dark); font-weight: 600; margin-right: 6px; }
.back-btn { margin-bottom: 14px; }

/* ---------- 任务页 ---------- */
.tabs { display: flex; gap: 4px; margin-bottom: 18px; border-bottom: 2px solid var(--border); }
.tab {
  padding: 8px 18px; font-size: 14px; border: none; background: none; color: var(--muted);
  border-bottom: 2px solid transparent; margin-bottom: -2px;
}
.tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
table.list { width: 100%; border-collapse: collapse; }
table.list th { text-align: left; font-size: 12px; color: var(--muted); padding: 8px 10px; border-bottom: 1px solid var(--border); }
table.list td { padding: 10px; border-bottom: 1px solid #f1f5f9; font-size: 13.5px; vertical-align: top; }
table.list tr:hover td { background: #f8fafc; }
.cand-title { max-width: 420px; }
.task-status { font-size: 12px; }
.crawl-bar { display: flex; gap: 12px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.crawl-info { font-size: 12px; color: var(--muted); }

/* 清洗预览 */
.clean-preview { margin-top: 10px; border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; background: #f8fafc; font-size: 13px; max-height: 240px; overflow-y: auto; white-space: pre-wrap; }

/* ---------- 设置页 ---------- */
.settings-card { padding: 20px 22px; margin-bottom: 16px; max-width: 720px; }
.settings-card h3 { font-size: 15px; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.form-row input[type=password], .form-row input[type=text], .form-row input[type=number] {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px; outline: none;
}
.form-row input:focus { border-color: var(--primary); }
.form-row .hint { font-size: 12px; color: var(--muted); margin-top: 5px; }
.switch { position: relative; display: inline-block; width: 42px; height: 22px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute; inset: 0; background: #cbd5e1; border-radius: 22px; transition: .2s; cursor: pointer;
}
.slider:before {
  content: ""; position: absolute; height: 18px; width: 18px; left: 2px; top: 2px;
  background: #fff; border-radius: 50%; transition: .2s;
}
.switch input:checked + .slider { background: var(--green); }
.switch input:checked + .slider:before { transform: translateX(20px); }
.sources-json { width: 100%; min-height: 200px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; padding: 10px; border: 1px solid var(--border); border-radius: 8px; }

/* ---------- 上传弹窗 ---------- */
.modal-mask { position: fixed; inset: 0; background: rgba(15, 23, 42, .45); display: flex; align-items: center; justify-content: center; z-index: 50; }
.modal { background: #fff; border-radius: 14px; width: min(680px, 92vw); max-height: 88vh; display: flex; flex-direction: column; box-shadow: 0 20px 60px rgba(0,0,0,.25); }
.modal-head { padding: 16px 20px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.modal-head h3 { font-size: 15px; }
.modal-body { padding: 18px 20px; overflow-y: auto; flex: 1; }
.modal-foot { padding: 12px 20px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }
.drop-zone {
  border: 2px dashed #cbd5e1; border-radius: 12px; padding: 34px 20px; text-align: center; color: var(--muted);
  cursor: pointer; transition: all .15s;
}
.drop-zone:hover, .drop-zone.drag { border-color: var(--primary); background: var(--primary-soft); color: var(--primary-dark); }
.drop-zone .big { font-size: 30px; margin-bottom: 6px; }
.steps { display: flex; gap: 6px; margin: 14px 0; align-items: center; font-size: 12px; color: var(--muted); }
.step { padding: 3px 10px; border-radius: 20px; background: #f1f5f9; }
.step.done { background: var(--green-soft); color: var(--green); }
.step.now { background: var(--primary-soft); color: var(--primary-dark); font-weight: 600; }
.step-arrow { color: #cbd5e1; }
.meta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 20px; margin: 12px 0; font-size: 13px; }
.meta-grid .k { color: var(--muted); font-size: 12px; }
.meta-grid .v { font-weight: 500; word-break: break-all; }

/* ---------- Toast ---------- */
.toast-wrap { position: fixed; top: 20px; right: 24px; z-index: 100; display: flex; flex-direction: column; gap: 8px; }
.toast {
  background: #0f172a; color: #e2e8f0; padding: 10px 16px; border-radius: 10px; font-size: 13px;
  box-shadow: var(--shadow); animation: slidein .2s ease;
}
.toast.ok { background: var(--green); }
.toast.err { background: var(--red); }
@keyframes slidein { from { transform: translateX(30px); opacity: 0; } }

.hidden { display: none !important; }
.muted { color: var(--muted); }
.spin {
  display: inline-block; width: 14px; height: 14px; border: 2px solid #fff; border-top-color: transparent;
  border-radius: 50%; animation: spin .7s linear infinite; vertical-align: -2px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- 问询历史 ---------- */
.hist-badge {
  margin-left: 4px; background: var(--primary); color: #fff; font-size: 11px;
  border-radius: 10px; padding: 0 6px; line-height: 16px; min-width: 16px; text-align: center;
}
.hist-list { display: flex; flex-direction: column; gap: 8px; max-height: 56vh; overflow-y: auto; }
.hist-item {
  border: 1px solid var(--border); border-radius: 10px; padding: 10px 14px;
  display: flex; align-items: center; gap: 12px; transition: border-color .15s;
}
.hist-item:hover { border-color: #bfdbfe; }
.hist-item .main { flex: 1; min-width: 0; }
.hist-q { font-weight: 600; font-size: 13.5px; margin-bottom: 3px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hist-meta { font-size: 11.5px; color: var(--muted); display: flex; gap: 12px; align-items: baseline; }
.hist-ans { color: #94a3b8; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 320px; }
.hist-actions { display: flex; gap: 6px; flex-shrink: 0; }
.hist-note { font-size: 11.5px; color: var(--muted); margin-bottom: 6px; }

/* ---------- 登录界面 ---------- */
.login-mask {
  position: fixed; inset: 0; z-index: 200; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
}
.login-card {
  width: min(400px, 92vw); padding: 32px 34px 26px; text-align: center;
}
.login-brand { font-size: 40px; margin-bottom: 8px; }
.login-card h1 { font-size: 19px; margin-bottom: 4px; }
.login-sub { color: var(--muted); font-size: 13px; margin-bottom: 22px; }
.login-tabs { display: flex; margin-bottom: 18px; border-bottom: 2px solid var(--border); }
.login-tab {
  flex: 1; padding: 8px 0; border: none; background: none; font-size: 14px; color: var(--muted);
  border-bottom: 2px solid transparent; margin-bottom: -2px;
}
.login-tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.login-card .form-row { text-align: left; }
.login-btn { width: 100%; margin-top: 6px; padding: 10px 0; font-size: 15px; }
.login-msg { min-height: 20px; font-size: 12.5px; margin-top: 8px; }
.login-foot { margin-top: 14px; font-size: 12.5px; }

/* ---------- 侧栏用户信息 ---------- */
.user-row { display: flex; align-items: center; gap: 8px; padding: 6px 0 10px; border-bottom: 1px solid #1e293b; margin-bottom: 8px; }
.user-avatar {
  width: 30px; height: 30px; border-radius: 50%; background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 14px; flex-shrink: 0;
}
.user-info { flex: 1; min-width: 0; }
.user-name { font-size: 12.5px; color: #e2e8f0; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-meta { font-size: 11px; color: #64748b; }
#logout-btn { flex-shrink: 0; background: transparent; color: #94a3b8; border-color: #334155; font-size: 11px; }
#logout-btn:hover { color: #f87171; border-color: #7f1d1d; }

/* ---------- 管理控制台 ---------- */
.admin-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.admin-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; text-align: center; box-shadow: var(--shadow);
}
.ac-num { font-size: 26px; font-weight: 700; color: var(--primary-dark); }
.ac-label { font-size: 12px; color: var(--muted); margin-top: 2px; }
.day-chart { padding: 6px 2px 2px; }
.chart-bars { display: flex; align-items: flex-end; gap: 6px; height: 130px; }
.chart-col { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; height: 100%; }
.chart-bar { width: 70%; background: linear-gradient(180deg, var(--primary), #93c5fd); border-radius: 4px 4px 0 0; min-height: 2px; }
.chart-num { font-size: 10.5px; color: var(--muted); margin-top: 3px; height: 14px; }
.chart-label { font-size: 10px; color: #94a3b8; margin-top: 2px; }

/* ---------- 反馈 ---------- */
.feedback-btn {
  width: 100%; margin-bottom: 10px; background: transparent; color: #94a3b8; border-color: #334155;
  justify-content: center;
}
.feedback-btn:hover { color: #e2e8f0; border-color: #475569; }
.fb-list { display: flex; flex-direction: column; gap: 8px; max-height: 30vh; overflow-y: auto; }
.fb-item { border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; }
.fb-item-head { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.fb-item-body { font-size: 13px; margin: 6px 0; white-space: pre-wrap; word-break: break-word; }
.fb-note { margin-top: 8px; font-size: 12.5px; background: var(--primary-soft); border-radius: 8px; padding: 6px 10px; color: var(--primary-dark); }
.fb-filter { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.fb-admin-item .fb-item-body { font-size: 13.5px; }