:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --ink: #121212;
  --muted: #6b6b6b;
  --border: #ebebeb;
  --soft: #f7f6f3;
  --gold: #c5a572;        /* brand accent only (fails contrast as a fill) */
  --gold-deep: #a97c2f;   /* emphasis / data */
  --radius: .75rem;
  --maxw: 860px;
  --font: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* topbar */
.topbar { border-bottom: 1px solid var(--border); background: #fff; position: sticky; top: 0; z-index: 5; }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; flex-wrap: wrap; }
.brand { font-weight: 800; letter-spacing: .04em; text-decoration: none; color: var(--ink); font-size: 15px; }
.brand span { color: var(--gold-deep); }
.nav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.nav a { text-decoration: none; color: var(--muted); font-size: 14px; padding: 8px 10px; border-radius: 8px; }
.nav a:hover { color: var(--ink); background: var(--soft); }
.nav a.on { color: var(--ink); box-shadow: inset 0 -2px 0 var(--gold); }
.logout { margin: 0; }

/* layout */
main.wrap { padding-top: 28px; padding-bottom: 40px; }
.page-title { font-size: 24px; margin: 0 0 4px; }
h1 { font-size: 26px; }
h2 { font-size: 17px; margin: 0 0 12px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.accent { color: var(--gold-deep); }
.mono { font-family: var(--mono); font-size: 13px; word-break: break-all; }
.selectable { user-select: all; background: var(--soft); padding: 10px 12px; border-radius: 8px; }

/* cards */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin: 18px 0; }
.card.centered { text-align: center; max-width: 460px; margin: 60px auto; }
.card-head { display: flex; align-items: center; justify-content: space-between; }

/* KPI tiles */
.tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 18px 0; }
.tile { border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; background: var(--surface); }
.tile-label { font-size: 12px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.tile-value { font-size: 26px; font-weight: 700; margin: 6px 0 2px; color: var(--gold-deep); }
.tile-sub { font-size: 12px; color: var(--muted); }
@media (max-width: 720px) { .tiles { grid-template-columns: repeat(2, 1fr); } .nav a { padding: 8px; } }

/* tables */
.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
.tbl th { text-align: left; font-weight: 600; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; padding: 8px 10px; border-bottom: 1px solid var(--border); }
.tbl td { padding: 10px; border-bottom: 1px solid var(--soft); }
.tbl tr:last-child td { border-bottom: none; }
.tbl tr.me { background: #fbf7ee; }
.tag { background: var(--gold); color: #1a1400; font-size: 11px; padding: 1px 7px; border-radius: 999px; margin-left: 6px; }

/* chart */
.chart { overflow-x: auto; }
.chart svg { display: block; }
.statchart { max-width: 640px; background: #fff; }
.statchart rect[fill="transparent"]:hover ~ rect,
.statchart rect:hover { cursor: default; }

/* range selector (segmented control) */
.segmented { display: inline-flex; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.seg { text-decoration: none; color: var(--muted); font-size: 13px; padding: 6px 12px; border-right: 1px solid var(--border); }
.seg:last-child { border-right: none; }
.seg:hover { background: var(--soft); color: var(--ink); }
.seg-on { background: var(--gold-deep); color: #fff; }
.seg-on:hover { background: var(--gold-deep); color: #fff; }

/* buttons / forms */
.btn { display: inline-block; text-decoration: none; border: 1px solid var(--border); background: #fff; color: var(--ink); padding: 9px 16px; border-radius: 10px; font-size: 14px; cursor: pointer; }
.btn:hover { background: var(--soft); }
.btn-primary { background: var(--gold-deep); border-color: var(--gold-deep); color: #fff; font-weight: 600; }
.btn-primary:hover { background: #946a26; }
.linkbtn { background: none; border: none; color: var(--gold-deep); cursor: pointer; font-size: 14px; padding: 8px 10px; text-decoration: none; }
.linkbtn:hover { text-decoration: underline; }
.pager { display: flex; gap: 10px; margin-top: 16px; }
.plain { list-style: none; padding: 0; margin: 0; }
.plain li { padding: 6px 0; border-bottom: 1px solid var(--soft); }
.foot { color: var(--muted); font-size: 12px; padding: 24px 20px; border-top: 1px solid var(--border); margin-top: 20px; }
code { background: var(--soft); padding: 1px 6px; border-radius: 6px; font-family: var(--mono); font-size: 13px; }

/* forms + flash */
.stack { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }
.stack .btn { align-self: flex-start; }
.input { width: 100%; max-width: 480px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; font-size: 14px; font-family: inherit; }
.input:focus { outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px #c5a57233; }
.inline { display: inline; margin: 0; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.check { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.flash { border-radius: 10px; padding: 12px 14px; margin: 16px 0; font-size: 14px; border: 1px solid; }
.flash-ok { background: #f2f9f2; border-color: #cfe6cf; color: #1f5130; }
.flash-err { background: #fdf3f3; border-color: #f0d2d2; color: #8a2b2b; }

/* admin */
.admin-link { color: var(--gold-deep); font-weight: 600; }
.stack.tight { gap: 6px; }
.stack.tight .input { max-width: 220px; }
.flagtag { display: inline-block; margin-top: 4px; font-size: 11px; color: #8a2b2b; background: #fdf3f3; border: 1px solid #f0d2d2; border-radius: 6px; padding: 1px 6px; }