:root {
  color-scheme: light;
  --surface-0: #f4f4f2;
  --surface-1: #fcfcfb;
  --surface-2: #efeeea;
  --border: #dedcd5;
  --grid: #e9e8e3;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #77756f;
  --accent: #2a78d6;
  --up: #2a78d6;        /* diverging pair: blue = up */
  --down: #e34948;      /* red = down */
  --up-text: #1c5cab;
  --down-text: #b42a29;
  --bar: #2a78d6;
  --vol: #b7d3f6;
  --danger: #d03b3b;
  --sp500-bg: #fbf3dc;   /* light shade: member of the S&P 500 on that day */
  /* status colors (reserved for state; always shown with an icon + label) */
  --good-text: #23743e;
  --warning-text: #8a5a00;
  --critical-text: #b42a29;
  --radius: 8px;
}
.subnav { display: flex; gap: 4px; padding: 6px 20px; background: var(--surface-0); border-bottom: 1px solid var(--border); }
.subnav a { color: var(--text-secondary); padding: 4px 10px; border-radius: 6px; }
.subnav a.on, .subnav a:hover { background: var(--surface-2); color: var(--text-primary); text-decoration: none; }
.momentum { font-weight: 600; letter-spacing: 1px; white-space: nowrap; }
.sp500-now { font-weight: 700; }
tr.sp500-day td { background: var(--sp500-bg); }
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --surface-0: #121211;
    --surface-1: #1a1a19;
    --surface-2: #242422;
    --border: #383835;
    --grid: #2a2a28;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #8f8e86;
    --accent: #3987e5;
    --up: #3987e5;
    --down: #e66767;
    --up-text: #6da7ec;
    --down-text: #ef8a89;
    --sp500-bg: #2e2a18;
    --bar: #3987e5;
    --vol: #1c3d66;
    --good-text: #6cc48a;
    --warning-text: #e0b04a;
    --critical-text: #ef8a89;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0; background: var(--surface-0); color: var(--text-primary);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.num, td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.muted { color: var(--text-muted); }
.secondary { color: var(--text-secondary); }
.up { color: var(--up-text); }
.down { color: var(--down-text); }

header.top {
  display: flex; align-items: center; gap: 20px; padding: 10px 20px;
  background: var(--surface-1); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10;
}
header.top .brand { font-weight: 700; color: var(--text-primary); }
header.top nav { display: flex; gap: 4px; }
header.top nav a { color: var(--text-secondary); padding: 6px 10px; border-radius: 6px; }
header.top nav a.on, header.top nav a:hover { background: var(--surface-2); color: var(--text-primary); text-decoration: none; }
header.top .spacer { flex: 1; }

.search { position: relative; width: 300px; }
.search input { width: 100%; }
.search .results {
  position: absolute; top: 36px; left: 0; right: 0; background: var(--surface-1);
  border: 1px solid var(--border); border-radius: var(--radius); box-shadow: 0 6px 24px rgb(0 0 0 / .15);
  max-height: 380px; overflow: auto; display: none;
}
.search .results a { display: flex; gap: 8px; padding: 7px 10px; color: var(--text-primary); }
.search .results a:hover, .search .results a.sel { background: var(--surface-2); text-decoration: none; }
.search .results b { min-width: 64px; }

input, select, button, textarea {
  font: inherit; color: var(--text-primary); background: var(--surface-1);
  border: 1px solid var(--border); border-radius: 6px; padding: 6px 9px;
}
button { cursor: pointer; background: var(--surface-2); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button:disabled { opacity: .5; cursor: default; }

main { max-width: 1280px; margin: 0 auto; padding: 20px; }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 16px; margin: 0 0 10px; }
.card { background: var(--surface-1); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.grid { display: grid; gap: 16px; }
.grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 900px) { .grid.cols-3, .grid.cols-2 { grid-template-columns: 1fr; } .search { width: 180px; } }

.filters { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.filters label { color: var(--text-secondary); font-size: 13px; display: flex; gap: 6px; align-items: center; }

table.data { width: 100%; border-collapse: collapse; }
table.data th, table.data td { padding: 6px 8px; border-bottom: 1px solid var(--grid); white-space: nowrap; }
table.data th { color: var(--text-secondary); font-weight: 600; font-size: 12px; text-align: left; position: sticky; top: 0; background: var(--surface-1); }
table.data th.sortable { cursor: pointer; user-select: none; }
table.data th.sortable:hover { color: var(--text-primary); }
table.data tbody tr:hover { background: var(--surface-2); }
table.data td.name { max-width: 320px; overflow: hidden; text-overflow: ellipsis; }
.table-wrap { overflow-x: auto; }
.pager { display: flex; gap: 8px; align-items: center; justify-content: flex-end; margin-top: 10px; }

.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 12px; }
.stat .label { color: var(--text-muted); font-size: 12px; }
.stat .value { font-size: 18px; font-variant-numeric: tabular-nums; }
.hero { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.hero .price { font-size: 30px; font-variant-numeric: tabular-nums; }
.pill { display: inline-block; padding: 1px 8px; border-radius: 999px; background: var(--surface-2); color: var(--text-secondary); font-size: 12px; }

.range-buttons { display: flex; gap: 4px; }
.range-buttons button.on { background: var(--accent); border-color: var(--accent); color: #fff; }
#chart { height: 440px; }

.tooltip {
  position: fixed; pointer-events: none; background: var(--surface-1); border: 1px solid var(--border);
  border-radius: 6px; padding: 6px 9px; box-shadow: 0 4px 16px rgb(0 0 0 / .15); font-size: 12px; display: none; z-index: 50;
}
.barchart svg { width: 100%; height: 220px; display: block; }
.barchart rect.bar { fill: var(--bar); }
.barchart rect.hit { fill: transparent; }
.barchart rect.hit:hover + rect.bar, .barchart rect.bar.hl { fill: var(--up-text); }
.barchart text { fill: var(--text-muted); font-size: 11px; }
.barchart line { stroke: var(--grid); }

/* chat */
.chat-layout { display: grid; grid-template-columns: 240px 1fr; gap: 16px; height: calc(100vh - 100px); }
.chat-list { overflow: auto; padding: 8px; }
.chat-list a { display: block; padding: 7px 9px; border-radius: 6px; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chat-list a.on, .chat-list a:hover { background: var(--surface-2); text-decoration: none; }
.chat-main { display: flex; flex-direction: column; min-height: 0; padding: 0; }
.messages { flex: 1; overflow: auto; padding: 20px; }
.msg { max-width: 860px; margin: 0 auto 18px; }
.msg.user .bubble { background: var(--surface-2); border-radius: var(--radius); padding: 10px 14px; white-space: pre-wrap; display: inline-block; }
.msg.user { text-align: right; }
.msg.user .bubble { text-align: left; }
.msg .bubble table { border-collapse: collapse; margin: 8px 0; }
.msg .bubble th, .msg .bubble td { border: 1px solid var(--border); padding: 4px 8px; }
.msg .bubble pre { background: var(--surface-2); padding: 10px; border-radius: 6px; overflow: auto; }
.msg details { margin: 6px 0; color: var(--text-muted); font-size: 12px; }
.msg details pre { white-space: pre-wrap; }
.status-line { color: var(--text-muted); font-style: italic; font-size: 13px; }
.composer { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--border); }
.composer textarea { flex: 1; resize: none; height: 64px; }
.error { color: var(--danger); }
.examples { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.examples button { font-size: 13px; }

.login { max-width: 340px; margin: 12vh auto; }
.login form { display: flex; flex-direction: column; gap: 10px; }

/* import status badges: icon + label, never color alone */
.status { display: inline-flex; gap: 4px; align-items: center; font-size: 12px; padding: 1px 8px; border-radius: 999px; background: var(--surface-2); color: var(--text-secondary); white-space: nowrap; }
.status.success { color: var(--good-text); }
.status.partial, .status.interrupted { color: var(--warning-text); }
.status.failed { color: var(--critical-text); }
.status.running { color: var(--accent); }
tr.clickable { cursor: pointer; }
tr.detail > td { background: var(--surface-0); padding: 10px 14px; white-space: normal; }
td.wrap { white-space: normal; min-width: 240px; }
pre.msg { white-space: pre-wrap; margin: 4px 0 0; font-size: 12px; color: var(--text-secondary); }

/* news */
.news-item { padding: 10px 0; border-bottom: 1px solid var(--grid); }
.news-item .meta { color: var(--text-muted); font-size: 12px; display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.news-item .title { font-size: 15px; background: none; border: 0; padding: 0; text-align: left; color: var(--text-primary); cursor: pointer; }
.news-item .title:hover { color: var(--accent); }
.news-item .body { margin-top: 6px; color: var(--text-secondary); }
.news-item .actions { display: flex; gap: 12px; margin-top: 6px; font-size: 13px; }
.chip { display: inline-block; padding: 0 6px; border-radius: 4px; background: var(--surface-2); font-size: 12px; }

/* stock page: tabs and financial tables */
.tabs { display: flex; gap: 4px; margin-bottom: 10px; flex-wrap: wrap; }
.tabs button.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.about { color: var(--text-secondary); white-space: pre-line; }
.sp500-filter { display: flex; align-items: center; gap: 8px; }

/* Gain and loss days: green up, red down. Used on the price history page. */
.gain-text { color: var(--good-text); }
.loss-text { color: var(--down-text); }
tr.hit td { background: #fff4c2; }
@media (prefers-color-scheme: dark) { tr.hit td { background: #4a3f12; } }


/* models and signals */
.param-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 14px 20px; }
.param-group h3 { font-size: 13px; margin: 0 0 6px; color: var(--text-secondary); }
.param-group label { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin: 4px 0; font-size: 13px; }
.param-group input[type=text], .param-group input[type=number], .param-group input[type=date] { width: 130px; }
.param-group select { width: 175px; }
.param-group label.changed span { font-weight: 600; }
.rules { white-space: pre-wrap; font: 12px/1.5 ui-monospace, monospace; color: var(--text-secondary); background: var(--surface-2); padding: 10px; border-radius: 6px; overflow-x: auto; }
.linechart svg { width: 100%; height: 300px; display: block; }
.linechart .grid-line { stroke: var(--grid); stroke-width: 1; }
.linechart .axis-text { fill: var(--text-muted); font-size: 11px; }
.linechart .series { fill: none; stroke-width: 2; stroke-linejoin: round; }
.linechart .s-model { stroke: var(--accent); }
.linechart .s-bench { stroke: var(--text-muted); }
.linechart .label-text { font-size: 12px; fill: var(--text-secondary); }
.linechart .cross { stroke: var(--text-muted); stroke-width: 1; }
.legend { display: flex; gap: 16px; font-size: 12px; color: var(--text-secondary); margin: 4px 0 6px; }
.legend i { display: inline-block; width: 14px; height: 2px; vertical-align: middle; margin-right: 6px; }
.kind { font-weight: 600; font-size: 12px; padding: 1px 8px; border-radius: 999px; background: var(--surface-2); white-space: nowrap; }
.kind.entry { color: var(--good-text); }
.kind.exit { color: var(--critical-text); }
.kind.hold { color: var(--text-secondary); }
.banner { padding: 8px 12px; border-radius: 6px; background: var(--surface-2); color: var(--warning-text); margin-bottom: 12px; }
#s-table td.wrap { white-space: normal; min-width: 200px; max-width: 380px; }
#s-table td:last-child { white-space: nowrap; }

/* menu-bar dropdown (Models) */
header.top nav .menu { position: relative; display: flex; }
header.top nav .submenu { display: none; position: absolute; top: 100%; left: 0; z-index: 60; min-width: 240px; padding: 4px;
  background: var(--surface-1); border: 1px solid var(--border); border-radius: 8px; box-shadow: 0 6px 20px rgb(0 0 0 / .12); }
header.top nav .menu:hover .submenu, header.top nav .menu:focus-within .submenu { display: flex; flex-direction: column; }
header.top nav .submenu a { white-space: nowrap; }
#sig-table td.wrap { white-space: normal; min-width: 200px; max-width: 360px; }
.server-clock { color: var(--text-secondary); font-size: 13px; white-space: nowrap; font-variant-numeric: tabular-nums; }
/* keep menu labels on one line; on narrow windows the header wraps instead of squeezing the search box */
header.top { flex-wrap: wrap; row-gap: 6px; }
header.top nav a { white-space: nowrap; }
header.top .header-right { margin-left: auto; display: flex; align-items: center; gap: 16px; }
header.top .search { width: 260px; }

/* model page: vary pane, locked (varied) settings, settings shown with results */
.vary-pane { margin-top: 14px; border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px; background: var(--surface-0); }
.vary-pane summary { cursor: pointer; }
.param-group label.varied { background: var(--sp500-bg); border-radius: 6px; padding: 0 4px; margin-left: -4px; margin-right: -4px; }
.param-group label.varied span { font-weight: 600; }
.param-group label.varied input, .param-group label.varied select { opacity: .55; }
.settings-used { margin: 6px 0 10px; }
.settings-used summary { cursor: pointer; color: var(--text-secondary); }
.settings-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 6px 24px; font-size: 12.5px; margin-top: 6px; }
.settings-grid h4 { margin: 4px 0 2px; font-size: 12px; color: var(--text-muted); font-weight: 600; }
.settings-grid div > div { display: flex; justify-content: space-between; gap: 10px; padding: 1px 0; border-bottom: 1px dotted var(--grid); }
.settings-grid div > div span { color: var(--text-secondary); }
.settings-grid .varied { background: var(--sp500-bg); }
.clip { display: inline-block; max-width: 190px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; vertical-align: bottom; }
#m-runs td, #mr-list td { white-space: nowrap; }
.param-group input:disabled, .param-group select:disabled { opacity: .5; }
#r-quarters th.group-head { text-align: center; border-bottom: 1px solid var(--border); }
#r-quarters tr.total-row td { border-top: 2px solid var(--border); }

/* fundamentals: ticker detail pane (slides in from the right) */
.pane-backdrop { position: fixed; inset: 0; background: rgb(0 0 0 / .25); z-index: 70; }
.fund-pane { position: fixed; top: 0; right: 0; bottom: 0; width: min(980px, 100vw); z-index: 71; overflow-y: auto;
  background: var(--surface-1); border-left: 1px solid var(--border); box-shadow: -8px 0 30px rgb(0 0 0 / .18); padding: 16px 20px 40px; }
.fund-pane[hidden], .pane-backdrop[hidden] { display: none; }
body.pane-open { overflow: hidden; }
.pane-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; position: sticky; top: -16px;
  background: var(--surface-1); padding: 8px 0 10px; margin-top: -8px; border-bottom: 1px solid var(--grid); z-index: 2; }
.fund-pane .stats { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
.fund-pane .stat .value { font-size: 16px; }
.fin-table td:first-child { color: var(--text-secondary); position: sticky; left: 0; background: var(--surface-1); }
.fin-table tr.sep td { border-top: 2px solid var(--border); }
.reader { margin-top: 14px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface-0); }
.reader-head { padding: 8px 10px; margin: 0; border-bottom: 1px solid var(--border); position: sticky; top: 46px; background: var(--surface-0); }
.reader-text { white-space: pre-wrap; padding: 12px 14px; max-height: 70vh; overflow-y: auto; font-size: 13.5px; line-height: 1.55; color: var(--text-primary); }
.reader-text mark { background: #ffe58a; color: #000; }
@media (prefers-color-scheme: dark) { .reader-text mark { background: #8a6d12; color: #fff; } }
#fund-table td.name { max-width: 170px; }
#fund-table td, #fund-table th { padding: 6px 6px; }