:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #16181d;
  --muted: #667085;
  --border: #e4e7ec;
  --accent: #0f766e;
  --accent-text: #ffffff;
  --income: #15803d;
  --expense: #b42318;
  --warn-bg: #fff7e6;
  --warn-text: #8a5300;
  --ok-bg: #ecfdf3;
  --ok-text: #05603a;
  --err-bg: #fef3f2;
  --err-text: #b42318;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --surface: #171a21;
    --text: #e6e8ec;
    --muted: #98a2b3;
    --border: #2a2f3a;
    --accent: #2dd4bf;
    --accent-text: #04201d;
    --income: #4ade80;
    --expense: #f97066;
    --warn-bg: #3a2a0a;
    --warn-text: #fdcf7c;
    --ok-bg: #0c2b1c;
    --ok-text: #75e0a7;
    --err-bg: #3b1412;
    --err-text: #fda29b;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
.wrap { max-width: 1100px; margin: 0 auto; padding: 16px; }

header.top { background: var(--surface); border-bottom: 1px solid var(--border); }
header.top .wrap { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; padding-block: 10px; }
header.top .brand { font-weight: 700; font-size: 18px; color: var(--text); text-decoration: none; margin-right: 8px; }
header.top nav { display: flex; gap: 4px; flex-wrap: wrap; flex: 1; }
header.top nav a { padding: 6px 10px; border-radius: 8px; color: var(--muted); text-decoration: none; }
header.top nav a.active, header.top nav a:hover { background: var(--bg); color: var(--text); }

h1 { font-size: 22px; margin: 8px 0 16px; }
h2 { font-size: 16px; margin: 0 0 12px; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); margin-bottom: 16px; }
.grid .card { margin: 0; }
.grid-2 { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.stat .label { color: var(--muted); font-size: 13px; }
.stat .value { font-size: 24px; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat .sub { color: var(--muted); font-size: 13px; }

.income { color: var(--income); }
.expense { color: var(--expense); }
.muted { color: var(--muted); }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 8px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); font-weight: 600; }
td small { color: var(--muted); display: block; }

input, select, button { font: inherit; color: inherit; }
input[type=text], input[type=email], input[type=password], input[type=month], input[type=file], select {
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 7px 10px; max-width: 100%;
}
button, .btn {
  display: inline-block; background: var(--accent); color: var(--accent-text); border: 0; border-radius: 8px;
  padding: 8px 14px; cursor: pointer; text-decoration: none; font-weight: 600;
}
button.secondary, .btn.secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
button.link { background: none; color: var(--muted); padding: 0; font-weight: 400; }
form.inline { display: inline; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; }
.flash.ok { background: var(--ok-bg); color: var(--ok-text); }
.flash.err { background: var(--err-bg); color: var(--err-text); }
.flash.warn { background: var(--warn-bg); color: var(--warn-text); }

.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; vertical-align: middle; }
.badge { font-size: 11px; padding: 1px 6px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); white-space: nowrap; }
.badge.low { border-color: var(--warn-text); color: var(--warn-text); }
.month-nav { display: flex; gap: 8px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.month-nav h1 { margin: 0 8px 0 0; }
.bar { height: 8px; border-radius: 4px; background: var(--border); overflow: hidden; }
.bar > span { display: block; height: 100%; }

.login { max-width: 360px; margin: 10vh auto; }
.login label { display: block; margin-bottom: 12px; }
.login input { width: 100%; margin-top: 4px; }

nav.pages { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 12px; }
nav.pages a, nav.pages span { padding: 4px 10px; border: 1px solid var(--border); border-radius: 6px; text-decoration: none; }
nav.pages .current { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }