:root {
  --bg: #f4f7fb;
  --panel: #ffffff;
  --ink: #10213a;
  --muted: #5d6b82;
  --brand: #135bec;
  --ok: #118a3f;
  --warn: #c76c0a;
  --bad: #ba1a1a;
  --border: #d9e0ec;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: radial-gradient(circle at top right, #dce8ff, var(--bg) 40%);
  color: var(--ink);
}
.container { max-width: 1160px; margin: 0 auto; padding: 1rem; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 1rem; box-shadow: 0 8px 18px rgba(16, 33, 58, 0.05); }
.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.header { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.title { margin: 0; font-size: 1.35rem; }
.sub { margin: 0; color: var(--muted); font-size: .9rem; }
label { display: block; margin-bottom: .35rem; font-weight: 600; font-size: .9rem; }
input, select, textarea {
  width: 100%; padding: .65rem .75rem; border-radius: 10px;
  border: 1px solid var(--border); background: #fff;
}
button, .btn {
  border: 0; background: var(--brand); color: #fff; padding: .62rem .95rem;
  border-radius: 10px; cursor: pointer; text-decoration: none; display: inline-block;
}
.btn-secondary { background: #475569; }
.btn-danger { background: var(--bad); }
.btn-ghost { background: #eaf0ff; color: var(--brand); }
.nav { background: #0f1a30; }
.nav .container { display: flex; gap: .7rem; flex-wrap: wrap; align-items: center; }
.nav a { color: #cfe0ff; text-decoration: none; padding: .8rem .55rem; font-size: .92rem; }
.nav a.active, .nav a:hover { color: #fff; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: .7rem .6rem; border-bottom: 1px solid var(--border); text-align: left; font-size: .9rem; }
th { color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; }
.badge { padding: .15rem .45rem; border-radius: 999px; font-size: .75rem; font-weight: 700; text-transform: uppercase; }
.badge.pending { color: #946200; background: #fff7d8; }
.badge.approved { color: #0b5f2d; background: #dcfae8; }
.badge.rejected { color: #8d1616; background: #ffdede; }
.badge.available { color: #0b5f2d; background: #dcfae8; }
.badge.occupied { color: #8d1616; background: #ffdede; }
.flash { margin: .8rem 0; padding: .65rem .8rem; border-radius: 10px; }
.flash.success { background: #dcfae8; color: #0b5f2d; }
.flash.error { background: #ffdede; color: #8d1616; }
.metric { font-size: 1.55rem; font-weight: 700; margin-top: .3rem; }
.room-price { font-size: 1.25rem; font-weight: 800; color: var(--brand); }
.actions form { display: inline; }
small { color: var(--muted); }