:root {
  --ink: #1d2430; --muted: #5d6676; --line: #e3e6eb; --bg: #f6f7f9; --card: #fff;
  --accent: #2f5d8a; --accent-ink: #fff; --ok: #1f7a4d; --ok-bg: #e7f5ee;
  --warn: #8a5a00; --warn-bg: #fff4dc; --err: #a32b2b; --err-bg: #fdeaea;
  --rent: #2f5d8a; --elec: #b9770e; --water: #1f7f8c;
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
       color: var(--ink); background: var(--bg); }
a { color: var(--accent); }
header.top { background: var(--card); border-bottom: 1px solid var(--line); }
header.top .inner { max-width: 1100px; margin: 0 auto; padding: 10px 20px; display: flex;
                    gap: 18px; align-items: center; flex-wrap: wrap; }
header.top .brand { font-weight: 650; margin-right: auto; color: var(--ink); text-decoration: none; }
header.top nav a { text-decoration: none; color: var(--muted); padding: 4px 2px; }
header.top nav a.on { color: var(--ink); border-bottom: 2px solid var(--accent); }
main { max-width: 1100px; margin: 0 auto; padding: 22px 20px 60px; }
main.narrow { max-width: 720px; }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 28px 0 10px; }
h3 { font-size: 15px; margin: 18px 0 8px; }
.sub { color: var(--muted); margin: 0 0 18px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px;
        margin-bottom: 16px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.stat { font-size: 26px; font-weight: 650; }
.stat-label { color: var(--muted); font-size: 13px; }
table { width: 100%; border-collapse: collapse; background: var(--card); }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); font-weight: 600; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
tr.total td { font-weight: 650; border-top: 2px solid var(--line); }
.tablewrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; }
.tablewrap table { border: 0; }
.tablewrap tr:last-child td { border-bottom: 0; }
form.inline { display: inline; }
label { display: block; font-weight: 550; margin: 10px 0 4px; font-size: 14px; }
label.check { display: flex; gap: 8px; align-items: center; font-weight: 450; }
input[type=text], input[type=password], input[type=date], input[type=email], input[type=number],
input[type=file], select, textarea {
  width: 100%; max-width: 420px; padding: 8px 10px; border: 1px solid #c9ced6; border-radius: 7px;
  font: inherit; background: #fff; }
textarea { max-width: 100%; min-height: 80px; }
.row { display: flex; gap: 14px; flex-wrap: wrap; align-items: flex-end; }
.row > div { flex: 1 1 180px; }
button, .btn { display: inline-block; border: 1px solid var(--accent); background: var(--accent);
  color: var(--accent-ink); padding: 7px 14px; border-radius: 7px; font: inherit; font-weight: 550;
  cursor: pointer; text-decoration: none; }
button.secondary, .btn.secondary { background: #fff; color: var(--accent); }
button.small, .btn.small { padding: 3px 9px; font-size: 13px; }
button.danger { background: #fff; color: var(--err); border-color: #e0b4b4; }
.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 10px; }
.flash.ok { background: var(--ok-bg); color: var(--ok); }
.flash.error { background: var(--err-bg); color: var(--err); }
.flash.warn, .note.warn { background: var(--warn-bg); color: var(--warn); }
.note { padding: 10px 14px; border-radius: 8px; background: #eef3f8; color: #2b4764; margin: 10px 0; }
.pill { display: inline-block; font-size: 12px; padding: 1px 8px; border-radius: 99px;
        background: #eef0f3; color: var(--muted); white-space: nowrap; }
.pill.active, .pill.paid { background: var(--ok-bg); color: var(--ok); }
.pill.upcoming { background: #eef3f8; color: #2b4764; }
.pill.open, .pill.unpaid { background: var(--warn-bg); color: var(--warn); }
.pill.reported { background: #efe9fb; color: #5b3c9b; }
.kind { display: inline-block; width: 9px; height: 9px; border-radius: 2px; margin-right: 6px; }
.kind.rent { background: var(--rent); } .kind.electric_gas { background: var(--elec); }
.kind.water { background: var(--water); }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.link-box { font-family: ui-monospace, Menlo, monospace; font-size: 13px; background: #f1f3f6;
            padding: 8px 10px; border-radius: 7px; word-break: break-all; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
details > summary { cursor: pointer; color: var(--accent); }
.pin { font-size: 24px; letter-spacing: .4em; text-align: center; max-width: 160px !important; }
.balance { font-size: 34px; font-weight: 700; }
.section-title { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
img.bill { max-width: 100%; border: 1px solid var(--line); border-radius: 6px; }
@media (max-width: 640px) { th, td { padding: 7px 6px; } main { padding: 16px 12px 50px; }
  .pill.reported { white-space: normal; } .card { padding: 14px 12px; } }