:root {
  --primary: #1677ff;
  --primary-hover: #4096ff;
  --primary-soft: #e6f4ff;
  --text: #1f1f1f;
  --text-secondary: #595959;
  --text-tertiary: #8c8c8c;
  --border: #f0f0f0;
  --border-strong: #d9d9d9;
  --bg: #f5f5f5;
  --card: #ffffff;
  --success: #52c41a;
  --warning: #faad14;
  --danger: #ff4d4f;
  --purple: #722ed1;
  --cyan: #13c2c2;
  --shadow: 0 1px 2px rgba(0,0,0,.03), 0 1px 6px rgba(0,0,0,.04);
  --radius: 8px;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }

.app-shell { min-height: 100vh; display: flex; }
.sider { position: fixed; inset: 0 auto 0 0; width: 248px; background: #fff; border-right: 1px solid var(--border); display: flex; flex-direction: column; z-index: 20; }
.brand { display: flex; gap: 12px; align-items: center; padding: 22px 20px 18px; border-bottom: 1px solid var(--border); }
.brand-mark { width: 38px; height: 38px; border-radius: 10px; background: var(--primary); color: #fff; display: grid; place-items: center; font-weight: 700; letter-spacing: .5px; }
.brand-title { font-size: 16px; font-weight: 650; }
.brand-subtitle { font-size: 12px; color: var(--text-tertiary); margin-top: 2px; }
.side-nav { padding: 12px 10px; display: flex; flex-direction: column; gap: 4px; }
.nav-item { width: 100%; border: 0; background: transparent; color: var(--text-secondary); display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 6px; text-align: left; transition: .15s ease; }
.nav-item:hover { background: #fafafa; color: var(--text); }
.nav-item.active { background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.nav-icon { width: 20px; text-align: center; opacity: .9; }
.sider-footer { margin-top: auto; padding: 16px; border-top: 1px solid var(--border); }
.dev-badge { display: inline-block; padding: 5px 8px; background: #fff7e6; border: 1px solid #ffd591; color: #ad6800; border-radius: 4px; font-size: 10px; font-weight: 700; letter-spacing: .3px; }

.main { margin-left: 248px; width: calc(100% - 248px); min-height: 100vh; }
.topbar { height: 88px; background: #fff; border-bottom: 1px solid var(--border); padding: 14px 28px; display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 10; }
.breadcrumb { font-size: 12px; color: var(--text-tertiary); margin-bottom: 5px; }
h1 { margin: 0; font-size: 22px; font-weight: 650; }
.topbar-actions { display: flex; gap: 10px; align-items: center; }
.context-chip { padding: 8px 12px; border: 1px solid var(--border); border-radius: 6px; background: #fafafa; min-width: 220px; }
.context-label { color: var(--text-tertiary); font-size: 11px; display: block; margin-bottom: 2px; }
.page-root { padding: 24px 28px 40px; }

.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.card-header { padding: 15px 16px 12px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.card-title { font-size: 14px; font-weight: 650; }
.card-subtitle { margin-top: 3px; color: var(--text-tertiary); font-size: 12px; }
.card-body { padding: 16px; }
.metric-card { padding: 16px; }
.metric-label { color: var(--text-tertiary); font-size: 12px; }
.metric-value { font-size: 26px; font-weight: 650; margin-top: 7px; letter-spacing: -.2px; }
.metric-foot { font-size: 12px; color: var(--text-secondary); margin-top: 6px; }

.section-title { margin: 22px 0 12px; font-size: 16px; font-weight: 650; }
.section-title:first-child { margin-top: 0; }

.btn { border-radius: 6px; border: 1px solid var(--border-strong); background: #fff; color: var(--text); padding: 7px 13px; line-height: 20px; transition: .15s ease; }
.btn:hover { border-color: var(--primary-hover); color: var(--primary); }
.btn-primary { color: #fff; background: var(--primary); border-color: var(--primary); }
.btn-primary:hover { color: #fff; background: var(--primary-hover); border-color: var(--primary-hover); }
.btn-link { border: 0; background: transparent; color: var(--primary); padding: 2px 0; }
.btn-sm { padding: 4px 9px; font-size: 12px; }
.btn-danger { color: var(--danger); border-color: #ffccc7; background: #fff2f0; }

.input, .select, .textarea { width: 100%; border: 1px solid var(--border-strong); background: #fff; border-radius: 6px; padding: 8px 10px; outline: none; color: var(--text); }
.input:focus, .select:focus, .textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(22,119,255,.08); }
.textarea { resize: vertical; min-height: 90px; }
.search-row { display: flex; gap: 8px; }
.search-row .input { flex: 1; }

.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; background: #fafafa; color: var(--text-secondary); font-weight: 600; border-bottom: 1px solid var(--border); padding: 10px 12px; white-space: nowrap; }
td { border-bottom: 1px solid var(--border); padding: 10px 12px; vertical-align: top; }
tr:hover td { background: #fafcff; }

.tag { display: inline-flex; align-items: center; gap: 4px; border-radius: 4px; padding: 2px 7px; font-size: 11px; font-weight: 600; border: 1px solid transparent; white-space: nowrap; }
.tag-fact { background: #f6ffed; color: #389e0d; border-color: #b7eb8f; }
.tag-alert { background: #fffbe6; color: #d48806; border-color: #ffe58f; }
.tag-insight { background: #e6f4ff; color: #0958d9; border-color: #91caff; }
.tag-inference { background: #f9f0ff; color: #531dab; border-color: #d3adf7; }
.tag-nba { background: #e6fffb; color: #08979c; border-color: #87e8de; }
.tag-neutral { background: #fafafa; color: var(--text-secondary); border-color: var(--border-strong); }

.list { display: flex; flex-direction: column; }
.list-item { padding: 12px 0; border-bottom: 1px solid var(--border); display: flex; gap: 12px; align-items: flex-start; justify-content: space-between; }
.list-item:last-child { border-bottom: 0; }
.item-main { min-width: 0; flex: 1; }
.item-title { font-weight: 600; font-size: 13px; }
.item-meta { color: var(--text-tertiary); font-size: 12px; margin-top: 4px; }
.item-desc { color: var(--text-secondary); font-size: 13px; margin-top: 5px; line-height: 1.45; }

.customer-row { display: grid; grid-template-columns: 1.4fr .85fr .85fr .85fr .9fr; gap: 10px; align-items: center; }
.customer-name { font-weight: 650; }
.customer-sub { color: var(--text-tertiary); font-size: 12px; margin-top: 2px; }

.notice { padding: 10px 12px; border: 1px solid #91caff; background: #e6f4ff; border-radius: 6px; color: #0958d9; font-size: 12px; line-height: 1.5; }
.notice.warning { border-color: #ffe58f; background: #fffbe6; color: #ad6800; }

.entity-summary { display: flex; gap: 14px; align-items: center; }
.avatar { width: 44px; height: 44px; border-radius: 50%; background: var(--primary-soft); color: var(--primary); display: grid; place-items: center; font-weight: 700; }
.avatar.company { border-radius: 10px; background: #f9f0ff; color: var(--purple); }

.graph-card { min-height: 340px; position: relative; overflow: hidden; }
.graph-canvas { position: relative; min-height: 300px; background: linear-gradient(180deg,#fff,#fafcff); border-radius: 6px; overflow: hidden; }
.graph-svg { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.graph-node { position: absolute; width: 150px; min-height: 62px; padding: 9px 10px; border: 1px solid var(--border-strong); border-radius: 8px; background: #fff; box-shadow: var(--shadow); cursor: pointer; z-index: 2; }
.graph-node:hover { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(22,119,255,.08); }
.graph-node .name { font-weight: 650; font-size: 12px; }
.graph-node .role { margin-top: 3px; color: var(--text-tertiary); font-size: 10px; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 14px; overflow-x: auto; }
.tab { border: 0; background: transparent; padding: 9px 11px; color: var(--text-secondary); border-bottom: 2px solid transparent; white-space: nowrap; }
.tab.active { color: var(--primary); border-color: var(--primary); font-weight: 600; }

.sparkline { width: 100%; height: 190px; display: block; }
.chart-axis { stroke: #d9d9d9; stroke-width: 1; }
.chart-line { fill: none; stroke: var(--primary); stroke-width: 2.4; }
.chart-dot { fill: #fff; stroke: var(--primary); stroke-width: 2; }
.chart-label { font-size: 10px; fill: #8c8c8c; }

.insight-card { padding: 14px 15px; border: 1px solid var(--border); border-radius: 8px; background: #fff; margin-bottom: 10px; }
.insight-head { display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.insight-title { font-weight: 650; }
.insight-actions { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 10px; }
.supporting-facts { margin-top: 9px; padding: 9px 10px; background: #fafafa; border-radius: 6px; font-size: 12px; color: var(--text-secondary); }
.supporting-facts ul { margin: 6px 0 0 16px; padding: 0; }

.chat-layout { display: grid; grid-template-columns: 1fr 310px; gap: 16px; }
.chat-card { min-height: 590px; display: flex; flex-direction: column; }
.chat-log { flex: 1; padding: 18px; overflow-y: auto; max-height: 510px; background: #fafafa; }
.message { max-width: 82%; margin-bottom: 13px; }
.message.user { margin-left: auto; }
.message-bubble { background: #fff; border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; font-size: 13px; line-height: 1.55; white-space: pre-wrap; }
.message.user .message-bubble { background: var(--primary); color: #fff; border-color: var(--primary); }
.message-meta { color: var(--text-tertiary); font-size: 10px; margin-bottom: 4px; }
.message.user .message-meta { text-align: right; }
.chat-input-row { padding: 12px; border-top: 1px solid var(--border); display: flex; gap: 8px; background: #fff; }
.chat-input-row .input { flex: 1; }
.quick-prompts { display: flex; flex-direction: column; gap: 8px; }
.quick-prompt { text-align: left; border: 1px solid var(--border); background: #fff; border-radius: 7px; padding: 10px; font-size: 12px; color: var(--text-secondary); }
.quick-prompt:hover { border-color: var(--primary); color: var(--primary); }
.ai-response-section { margin-top: 8px; }
.ai-response-section strong { display: block; margin-bottom: 4px; color: var(--text); }
.response-actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }

.action-item { border: 1px solid var(--border); border-radius: 7px; padding: 12px; margin-bottom: 10px; }
.action-status { font-size: 11px; }

.modal-mask { position: fixed; inset: 0; background: rgba(0,0,0,.35); display: grid; place-items: center; z-index: 100; padding: 20px; }
.modal { width: min(720px, 96vw); max-height: 85vh; overflow: auto; background: #fff; border-radius: 10px; box-shadow: 0 12px 40px rgba(0,0,0,.18); }
.modal-header { padding: 16px 18px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.modal-body { padding: 18px; }
.modal-footer { padding: 12px 18px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; }
.close-btn { border: 0; background: transparent; font-size: 20px; color: var(--text-tertiary); }

.kv { display: grid; grid-template-columns: 150px 1fr; gap: 8px 14px; font-size: 13px; }
.kv .k { color: var(--text-tertiary); }
.kv .v { color: var(--text); }
.muted { color: var(--text-tertiary); }
.small { font-size: 11px; }
.text-right { text-align: right; }
.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mb-0 { margin-bottom: 0; }
.flex { display: flex; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }

@media (max-width: 1100px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .chat-layout { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
  .sider { width: 72px; }
  .brand-title, .brand-subtitle, .nav-item span:not(.nav-icon), .sider-footer { display: none; }
  .brand { justify-content: center; padding: 18px 8px; }
  .nav-item { justify-content: center; }
  .main { margin-left: 72px; width: calc(100% - 72px); }
  .topbar { padding: 12px 16px; height: auto; min-height: 78px; }
  .page-root { padding: 16px; }
  .context-chip { display: none; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .customer-row { grid-template-columns: 1fr; }
}