:root {
  --bg: #f6f7f9; --fg: #1d2330; --muted: #6b7280; --card: #ffffff; --line: #e3e6eb;
  --accent: #4f7cff; --alert: #b42318; --ok: #1f7a4d;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #12151b; --fg: #e6e8ec; --muted: #9aa0aa; --card: #1b1f27; --line: #2b313c; --accent: #7c9cff; --alert: #f97066; --ok: #47cd89; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--accent); text-decoration: none; }
main { max-width: 1280px; margin: 0 auto; padding: 16px; }
h1 { font-size: 1.4rem; margin: 0; } h2 { font-size: 1.05rem; margin: 0 0 12px; } h3 { font-size: .85rem; margin: 0; color: var(--muted); font-weight: 500; }
.muted { color: var(--muted); font-size: .85rem; }
.top { display: flex; justify-content: space-between; align-items: center; padding: 10px 16px; background: var(--card); border-bottom: 1px solid var(--line); flex-wrap: wrap; gap: 8px; }
.top nav { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--fg); }
.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin: 8px 0 16px; }
.ranges { display: flex; gap: 4px; }
.ranges a { padding: 4px 10px; border-radius: 6px; border: 1px solid var(--line); color: var(--fg); background: var(--card); }
.ranges a.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 16px; }
.card, .panel { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px; }
.panel { margin-bottom: 16px; }
.big { font-size: 1.6rem; font-weight: 650; margin: 4px 0; font-variant-numeric: tabular-nums; }
.chart { position: relative; height: 300px; }
.split { display: grid; grid-template-columns: repeat(auto-fit, minmax(380px, 1fr)); gap: 16px; }
.scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .88rem; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-weight: 500; }
td.n, th.n { text-align: right; font-variant-numeric: tabular-nums; }
.flash { padding: 10px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); }
.flash.alert { color: var(--alert); } .flash.notice { color: var(--ok); }
.login { max-width: 360px; margin: 12vh auto; text-align: center; }
.login details { margin-top: 28px; text-align: left; }
.form, .login form { display: flex; flex-direction: column; gap: 8px; max-width: 420px; }
input[type=email], input[type=text], input[type=password] { padding: 8px; border-radius: 6px; border: 1px solid var(--line); background: var(--bg); color: var(--fg); font: inherit; }
button, input[type=submit], .button { padding: 8px 14px; border-radius: 6px; border: 1px solid var(--line); background: var(--card); color: var(--fg); font: inherit; cursor: pointer; }
.primary, input.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.link { border: 0; background: none; padding: 0; color: var(--accent); }
.actions { display: flex; gap: 12px; } .actions form { display: inline; }
.secret { background: var(--card); border: 1px solid var(--line); padding: 12px; border-radius: 8px; overflow-x: auto; }
@media (max-width: 600px) { .split { grid-template-columns: 1fr; } .big { font-size: 1.3rem; } }