:root { --bg:#ffffff; --fg:#1f2328; --muted:#656d76; --pos:#1a7f37; --neg:#cf222e; --card:#f6f8fa; --border:#d0d7de; --accent:#0969da; --chart-bg:#ffffff; --chart-grid:#eaeef2; }
* { box-sizing: border-box; }
body { margin:0; background:var(--bg); color:var(--fg); font:14px/1.5 -apple-system,Segoe UI,Roboto,sans-serif; }
.topnav { background:#f6f8fa; padding:10px 20px; border-bottom:1px solid var(--border); display:flex; gap:18px; align-items:center; }
.topnav a { color:var(--fg); text-decoration:none; }
.topnav a:hover { color:var(--accent); }
.topnav .link { background:none; border:0; color:var(--muted); cursor:pointer; margin-left:auto; }
main { max-width: 1100px; margin: 24px auto; padding: 0 20px; }
section { margin-bottom: 28px; }
h1 { font-size: 32px; margin: 0; font-weight: 600; }
h2 { font-size: 18px; margin: 24px 0 12px; color: var(--muted); font-weight: 500; }
h3 { font-size: 14px; margin: 0 0 12px; color: var(--muted); font-weight: 500; text-transform: uppercase; letter-spacing: 0.5px; }
table { width:100%; border-collapse: collapse; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--border); text-align:left; }
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.pos { color: var(--pos); }
.neg { color: var(--neg); }
.pill { background:rgba(26,127,55,0.12); color:var(--pos); padding:3px 10px; border-radius:12px; font-size:12px; cursor:pointer; user-select:none; }
.nav-row { display:flex; align-items:center; gap:12px; }
.nav-sub { color: var(--muted); margin-top:6px; display:flex; gap:18px; font-size:13px; }
.card { background: var(--card); padding: 16px 18px; border:1px solid var(--border); border-radius:8px; }
.grid { display:grid; grid-template-columns: repeat(4, 1fr); gap: 10px; align-items:end; }
.grid label { display:flex; flex-direction:column; gap:4px; font-size:12px; color:var(--muted); }
.grid input, .grid select { background:#ffffff; color:var(--fg); border:1px solid var(--border); padding:6px 8px; border-radius:4px; font:inherit; }
button { background: var(--accent); color:#ffffff; border:0; padding:7px 14px; border-radius:6px; cursor:pointer; font:inherit; font-weight:600; }
button.link { background: none; color: var(--accent); padding: 0; font-weight: 400; text-decoration: underline; }
.range-buttons { display:flex; gap:6px; flex-wrap:wrap; margin-bottom:12px; align-items:center; }
.range-buttons button { background:#eef1f4; color:var(--fg); font-weight:400; padding:5px 12px; border:1px solid var(--border); }
.range-buttons button.active { background: var(--accent); color:#ffffff; border-color:var(--accent); }
.range-custom { margin-left:auto; color:var(--muted); font-size:12px; }
.range-custom input, .range-custom select { background:#ffffff; color:var(--fg); border:1px solid var(--border); padding:3px 6px; border-radius:3px; }
#chart { background: var(--chart-bg); border:1px solid var(--border); border-radius:8px; max-width:100%; height:auto; }
.loginbox { max-width: 320px; margin: 15vh auto; background: var(--card); padding: 30px; border-radius: 10px; border:1px solid var(--border); display:flex; flex-direction:column; gap:12px; }
.loginbox h1 { text-align:center; }
.loginbox input { background:#ffffff; color:var(--fg); border:1px solid var(--border); padding:10px; border-radius:6px; font:inherit; }
.err { color: var(--neg); margin: 0; font-size: 13px; text-align:center; }
.loans-grid { display:grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.stale { opacity: 0.6; }
.stale::after { content: ' ⚠'; color: var(--neg); }
.chart-tooltip { position:absolute; z-index:10; pointer-events:none; background:#ffffff; border:1px solid var(--border); border-radius:6px; padding:8px 10px; font-size:12px; box-shadow:0 2px 8px rgba(0,0,0,0.08); min-width:140px; }
.chart-tooltip .tt-date { color: var(--muted); font-size: 11px; }
.chart-tooltip .tt-val { font-weight: 600; font-size: 16px; color: var(--fg); margin-top: 2px; }
.chart-tooltip .tt-delta { font-size: 11px; margin-top: 2px; }
.actions { white-space: nowrap; }
.actions button { background:none; color:var(--muted); padding:2px 6px; font-size:12px; font-weight: 400; }
.actions button:hover { color: var(--neg); }