:root {
  --bg: #0f1221;
  --panel: #1a1f36;
  --panel-2: #232a47;
  --line: #2e3659;
  --text: #e7eaf5;
  --muted: #9aa3c7;
  --brand: #5b8cff;
  --green: #35c48a;
  --amber: #f0b032;
  --red: #f05b5b;
  --radius: 14px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: var(--brand); }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; border-bottom: 1px solid var(--line);
  background: var(--panel);
}
.topbar h1 { font-size: 18px; margin: 0; }
.topbar .tag { color: var(--muted); font-size: 12px; margin-left: 10px; }
.topbar a.link { font-size: 13px; color: var(--muted); text-decoration: none; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 24px; }

.stats { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-bottom: 22px; }
.stat {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px;
}
.stat .label { color: var(--muted); font-size: 12px; }
.stat .value { font-size: 24px; font-weight: 650; margin-top: 6px; }

.toolbar { display: flex; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
button {
  font: inherit; cursor: pointer; border: 1px solid var(--line);
  background: var(--panel-2); color: var(--text);
  padding: 9px 14px; border-radius: 10px;
}
button:hover { border-color: var(--brand); }
button.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
button.danger { background: var(--red); border-color: var(--red); color: #fff; }
button.ok { background: var(--green); border-color: var(--green); color: #06301f; }
button.ghost { background: transparent; }
button.small { padding: 6px 10px; font-size: 12px; }

.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); overflow-x: auto;
}
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 12px 14px; font-size: 14px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 550; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
tr:last-child td { border-bottom: none; }
tr.clickable:hover { background: var(--panel-2); cursor: pointer; }

.badge { display: inline-block; padding: 3px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.active { background: rgba(53,196,138,.15); color: var(--green); }
.badge.locked { background: rgba(240,91,91,.15); color: var(--red); }
.badge.overdue { background: rgba(240,176,50,.15); color: var(--amber); }
.badge.paid { background: rgba(53,196,138,.15); color: var(--green); }
.badge.pending { background: rgba(154,163,199,.15); color: var(--muted); }

.overlay {
  position: fixed; inset: 0; background: rgba(5,7,16,.6);
  display: none; align-items: center; justify-content: center; padding: 20px; z-index: 50;
}
.overlay.show { display: flex; }
.modal {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  width: 100%; max-width: 560px; max-height: 90vh; overflow: auto;
}
.modal header { padding: 16px 20px; border-bottom: 1px solid var(--line); display:flex; justify-content:space-between; align-items:center; }
.modal .body { padding: 20px; }
.modal footer { padding: 16px 20px; border-top: 1px solid var(--line); display:flex; gap:10px; justify-content:flex-end; }

label { display:block; font-size: 13px; color: var(--muted); margin: 12px 0 5px; }
input, select {
  width: 100%; font: inherit; padding: 9px 11px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--panel-2); color: var(--text);
}
.grid2 { display:grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.muted { color: var(--muted); }
.notice {
  background: rgba(91,140,255,.1); border: 1px solid rgba(91,140,255,.35);
  color: #c9d7ff; padding: 10px 12px; border-radius: 10px; font-size: 13px; margin-bottom: 16px;
}
.detail-head { display:flex; justify-content:space-between; align-items:flex-start; gap: 16px; }
.kv { display:grid; grid-template-columns: auto 1fr; gap: 6px 16px; font-size: 14px; margin: 10px 0; }
.kv .k { color: var(--muted); }
.logs { font-size: 12px; color: var(--muted); max-height: 160px; overflow:auto; margin-top: 8px; }
.logs div { padding: 4px 0; border-bottom: 1px solid var(--line); }
.empty { padding: 40px; text-align:center; color: var(--muted); }
/* ---------- Responsive / mobile-friendly ---------- */
@media (max-width: 760px){
  .topbar { flex-wrap: wrap; gap: 8px 12px; padding: 12px 16px; }
  .topbar h1 { font-size: 16px; }
  .topbar .tag { display: block; margin-left: 0; }
  .wrap { padding: 16px; }
  .stats { grid-template-columns: repeat(2,1fr); gap: 10px; }
  .stat { padding: 13px; }
  .stat .value { font-size: 20px; }
  .grid2 { grid-template-columns: 1fr; }
  /* tables scroll sideways instead of squishing */
  table { min-width: 560px; }
  th, td { padding: 10px 12px; font-size: 13px; }
  .toolbar button { flex: 1 1 auto; }
  .modal footer { flex-wrap: wrap; }
  .modal footer button { flex: 1 1 auto; }
  .detail-head { flex-direction: column; }
}
@media (max-width: 440px){
  .stats { grid-template-columns: 1fr 1fr; }
  .stat .value { font-size: 18px; }
  .topbar h1 { font-size: 15px; }
}