:root {
  --bg: #0b1020;
  --panel: #111833;
  --card: #121a3a;
  --text: #e8ecff;
  --muted: #a9b3d6;
  --line: rgba(255,255,255,0.08);
  --btn: #2d5bff;
  --danger: #ff3b3b;
  --ok: #2ecc71;
  --warn: #f1c40f;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: ui-sans-serif, system-ui, -apple-system, Arial; background: var(--bg); color: var(--text); }

a { color: var(--text); }
.muted { color: var(--muted); }

.app {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--panel);
  border-right: 1px solid var(--line);
  padding: 18px;
  display: flex;
  flex-direction: column;
}

.brand { display: flex; gap: 12px; align-items: center; padding: 10px 8px 18px; }
.brand-icon { font-size: 22px; }
.brand-title { font-weight: 700; }
.brand-sub { color: var(--muted); font-size: 12px; margin-top: 2px; }

.nav { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.nav-link {
  padding: 10px 12px;
  text-decoration: none;
  border-radius: 10px;
  color: var(--text);
  border: 1px solid transparent;
}
.nav-link:hover { background: rgba(255,255,255,0.06); }
.nav-link.active { background: rgba(45,91,255,0.2); border-color: rgba(45,91,255,0.5); }

.sidebar-footer { margin-top: auto; padding: 12px 8px; border-top: 1px solid var(--line); }

.main { padding: 18px 22px; }
.topbar { display: flex; align-items: center; justify-content: space-between; padding: 6px 0 14px; }
.page-title { margin: 0; font-size: 22px; }

.content { display: flex; flex-direction: column; gap: 16px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
}

.card-label { color: var(--muted); font-size: 12px; }
.metric { font-size: 28px; font-weight: 800; margin-top: 6px; }
.metric.small { font-size: 18px; }

.section-title { margin: 0 0 10px; font-size: 16px; }

.divider { height: 1px; background: var(--line); margin: 10px 0; }
.divider.thin { margin: 10px 0; }

.grid { display: grid; gap: 14px; }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.notice {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.05);
}
.notice.ok { border-color: rgba(46,204,113,0.35); }
.notice.warn { border-color: rgba(241,196,15,0.35); }
.notice.error { border-color: rgba(255,59,59,0.35); }

.form { display: grid; gap: 10px; }
.form label { display: grid; gap: 6px; font-size: 12px; color: var(--muted); }
input, select {
  width: 100%;
  padding: 10px 10px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(0,0,0,0.25);
  color: var(--text);
}
.in-table { padding: 8px 8px; }

.btn {
  background: var(--btn);
  border: 0;
  color: white;
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 700;
}
.btn:hover { filter: brightness(1.05); }
.btn.danger { background: var(--danger); }

.actions { margin-top: 10px; display: flex; gap: 10px; align-items: center; }
.between { display: flex; justify-content: space-between; align-items: center; gap: 12px; }

.row { display: grid; grid-template-columns: 1fr 1fr auto; gap: 12px; align-items: end; }
.row-item label { display: grid; gap: 6px; }

.table { width: 100%; border-collapse: collapse; }
.table th, .table td {
  border-bottom: 1px solid var(--line);
  padding: 10px 8px;
  font-size: 13px;
}
.table th { color: var(--muted); font-weight: 700; text-align: left; }

.unit-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}
.unit-tile {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px;
  background: rgba(255,255,255,0.04);
}
.unit-tile.occ { background: rgba(255,59,59,0.08); }
.unit-tile.vac { background: rgba(46,204,113,0.08); }
.unit-title { font-weight: 800; }
.unit-sub { color: var(--muted); margin-top: 2px; font-size: 12px; }
.unit-rate { margin-top: 8px; font-size: 12px; }
.unit-status { margin-top: 6px; color: var(--muted); font-size: 12px; }

.lease-card {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.lease-card:last-child { border-bottom: 0; }
.lease-title { font-weight: 800; }
.lease-sub { color: var(--muted); font-size: 12px; margin-top: 4px; }

@media (max-width: 980px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { position: sticky; top: 0; z-index: 10; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .unit-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .row { grid-template-columns: 1fr; }
}