:root {
  --bg: #faf7f2;
  --card: #ffffff;
  --ink: #2b2b2b;
  --muted: #7a7a7a;
  --accent: #e8743b;       /* lucky-cat orange */
  --accent-ink: #fff;
  --line: #ececec;
  --ok: #2e7d32;
  --warn: #b26a00;
  --danger: #c62828;
  --radius: 12px;
}

* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px; background: var(--card); border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 1.2rem; text-decoration: none; color: var(--ink);
}
.brand-logo { height: 36px; width: 36px; object-fit: contain; display: block; }
.brand-accent { color: var(--accent); }
.topbar nav { display: flex; align-items: center; gap: 14px; }
.topbar a { color: var(--ink); text-decoration: none; }
.who { color: var(--muted); font-size: .9rem; }

.container { max-width: 920px; margin: 24px auto; padding: 0 20px; }
.foot { text-align: center; color: var(--muted); padding: 30px 0; }

h1 { font-size: 1.6rem; margin: .2em 0 .4em; }
h2 { font-size: 1.15rem; margin: 1.4em 0 .5em; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.big { font-size: 2rem; font-weight: 800; margin: .2em 0; }
.center { text-align: center; }

.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px; margin: 12px 0;
}
.card.narrow { max-width: 420px; margin: 24px auto; }

label { display: block; margin: 10px 0; font-size: .9rem; color: var(--muted); }
input {
  display: block; width: 100%; margin-top: 4px; padding: 9px 11px;
  border: 1px solid var(--line); border-radius: 8px; font-size: 1rem; background: #fff;
}
input.mini { display: inline-block; width: 80px; margin: 0; }

.btn {
  display: inline-block; cursor: pointer; border: 1px solid var(--line);
  background: #fff; color: var(--ink); padding: 9px 14px; border-radius: 8px;
  font-size: .95rem; text-decoration: none; margin: 4px 4px 4px 0;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.small { padding: 6px 10px; font-size: .85rem; }
.link { background: none; border: none; color: var(--accent); cursor: pointer; padding: 0; font-size: .9rem; }
.inline { display: inline; }
.block { margin: 10px 0; padding-bottom: 10px; border-bottom: 1px dashed var(--line); }

.flash { padding: 10px 14px; border-radius: 8px; margin: 8px 0; border: 1px solid var(--line); }
.flash-success { background: #edf7ed; border-color: #cfe8cf; color: var(--ok); }
.flash-danger  { background: #fdecea; border-color: #f5c6c2; color: var(--danger); }
.flash-warning { background: #fff7e6; border-color: #ffe1a8; color: var(--warn); }
.flash-info    { background: #eef4ff; border-color: #cfe0ff; color: #1d4ed8; }

.bills { display: flex; flex-direction: column; gap: 10px; }
.bill {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px 16px; display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap;
}
.bill-main { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.bill-type {
  text-transform: uppercase; font-size: .7rem; letter-spacing: .05em; font-weight: 700;
  padding: 3px 8px; border-radius: 999px; background: #f0eadf;
}
.bill-type-utilities { background: #e6f0f3; }
.bill-amount { font-weight: 800; font-size: 1.1rem; }
.bill-period, .bill-due { color: var(--muted); font-size: .9rem; }

.status { font-size: .75rem; padding: 3px 9px; border-radius: 999px; text-transform: capitalize; }
.status-unpaid { background: #fdecea; color: var(--danger); }
.status-paid { background: #edf7ed; color: var(--ok); }
.status-partial { background: #fff7e6; color: var(--warn); }
.status-waived { background: #eef1f5; color: #5b6673; }
.status-archived { background: #eef1f5; color: #5b6673; }
.archived-row td { opacity: .6; }

.kv { display: grid; grid-template-columns: 120px 1fr; gap: 6px 12px; margin: 0; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 720px) { .grid2 { grid-template-columns: 1fr; } }

.tbl { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.tbl th, .tbl td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); font-size: .9rem; white-space: nowrap; }
.tbl th { background: #f7f3ec; color: var(--muted); font-weight: 600; }

/* Let wide tables scroll sideways instead of overflowing on small screens. */
.scroll-x { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.scroll-x .tbl { min-width: 460px; }

.link.danger { color: var(--danger); }
.row-actions { display: flex; gap: 12px; white-space: nowrap; }
.tbl .num { text-align: right; font-variant-numeric: tabular-nums; }
.tbl .strong { font-weight: 700; }
.tbl.report tfoot td { border-top: 2px solid var(--line); background: #f7f3ec; }
.tbl.report .tenant-cell { vertical-align: top; font-weight: 600; border-left: 1px solid var(--line); }
.tbl.report .type-rent td { border-top: 2px solid var(--line); }
.tbl.report .type-subtotal td { background: #faf7f2; }
.tbl.report tfoot .grand td { border-top: 2px solid var(--ink); }
.report-bar { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin: 12px 0; }

/* ---- Mobile ---- */
@media (max-width: 600px) {
  .container { margin: 14px auto; padding: 0 12px; }
  .topbar { flex-wrap: wrap; gap: 8px 12px; padding: 10px 14px; }
  .topbar nav { gap: 10px; flex-wrap: wrap; }
  .brand { font-size: 1.05rem; }
  .who { width: 100%; order: 3; }            /* email drops to its own line */
  h1 { font-size: 1.35rem; }
  h2 { font-size: 1.05rem; }
  .card { padding: 16px; }
  .card.narrow { margin: 14px auto; }

  /* Bill rows stack vertically and pay buttons go full width + tappable. */
  .bill { flex-direction: column; align-items: stretch; }
  .bill-actions { display: flex; flex-direction: column; gap: 6px; }
  .bill-actions .btn { width: 100%; text-align: center; margin: 0; padding: 11px 14px; }

  /* Make primary actions comfortably tappable. */
  .btn { padding: 11px 14px; }
  .btn.small { padding: 9px 12px; }
}