:root{
  --navy:#0b2a63; --navy-2:#13377d; --navy-ink:#071c44;
  --bg:#f3f5f9; --card:#fff; --ink:#15213a; --muted:#66718a; --line:#e3e7ef;
  --green:#127a4b; --green-bg:#e6f5ee; --red:#b42323; --red-bg:#fdecec;
  --amber:#a15c00; --amber-bg:#fff3df; --blue-bg:#e9effb;
  --radius:12px; --shadow:0 1px 2px rgba(16,30,60,.06),0 2px 8px rgba(16,30,60,.04);
}
*{box-sizing:border-box}
html,body{margin:0}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans Tamil",sans-serif;background:var(--bg);color:var(--ink);font-size:15px;line-height:1.45;-webkit-font-smoothing:antialiased}
a{color:var(--navy-2);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{margin:0;line-height:1.2;letter-spacing:-.01em}
h1{font-size:22px}
h2{font-size:17px}
h3{font-size:15px}
.muted{color:var(--muted)}
.small{font-size:13px}
.num{font-variant-numeric:tabular-nums;white-space:nowrap}
.right{text-align:right}
.hide{display:none!important}

/* ---------- shell ---------- */
.shell{display:flex;min-height:100vh}
.side{width:236px;background:var(--navy);color:#fff;position:fixed;inset:0 auto 0 0;display:flex;flex-direction:column;padding:18px 12px;z-index:30}
.brand{display:flex;align-items:center;gap:10px;padding:2px 8px 18px;border-bottom:1px solid rgba(255,255,255,.12);margin-bottom:10px}
.brand img{height:34px}
.brand b{display:block;font-size:15px}
.brand span{display:block;font-size:11px;opacity:.7;text-transform:uppercase;letter-spacing:.08em}
.nav a{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.82);padding:9px 10px;border-radius:8px;font-size:14px;margin:1px 0}
.nav a:hover{background:rgba(255,255,255,.08);text-decoration:none;color:#fff}
.nav a.on{background:#fff;color:var(--navy);font-weight:600}
.nav a svg{width:18px;height:18px;flex:none}
.nav .sep{height:1px;background:rgba(255,255,255,.12);margin:10px 4px}
.side .who{margin-top:auto;font-size:13px;padding:10px;border-top:1px solid rgba(255,255,255,.12)}
.side .who form{display:inline}
.side .who button{background:none;border:0;color:#fff;opacity:.8;padding:0;cursor:pointer;font:inherit;text-decoration:underline}
.main{flex:1;margin-left:236px;min-width:0}
.top{display:none}
.wrap{max-width:1180px;margin:0 auto;padding:22px 24px 90px}
.pagehead{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.pagehead p{margin:4px 0 0}

/* ---------- cards ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}
.card + .card{margin-top:14px}
.card-h{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow)}
.stat .l{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-weight:600}
.stat .v{font-size:24px;font-weight:700;margin-top:4px;font-variant-numeric:tabular-nums}
.stat .s{font-size:13px;color:var(--muted);margin-top:2px}
.stat.hl{background:var(--navy);color:#fff;border-color:var(--navy)}
.stat.hl .l,.stat.hl .s{color:rgba(255,255,255,.75)}
.stat.hl a{color:#fff;text-decoration:underline}

/* ---------- tables ---------- */
.tbl-wrap{overflow-x:auto;margin:0 -16px;padding:0 16px}
table{width:100%;border-collapse:collapse}
th,td{padding:9px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:600;background:#fafbfd;white-space:nowrap}
tr:last-child td{border-bottom:0}
tbody tr:hover{background:#fafbfe}
td.void,tr.void td{color:#9aa3b5;text-decoration:line-through}

/* ---------- badges ---------- */
.badge{display:inline-block;font-size:12px;font-weight:600;padding:2px 8px;border-radius:999px;background:var(--blue-bg);color:var(--navy-2);white-space:nowrap}
.badge.green{background:var(--green-bg);color:var(--green)}
.badge.red{background:var(--red-bg);color:var(--red)}
.badge.amber{background:var(--amber-bg);color:var(--amber)}
.badge.grey{background:#eef0f4;color:#5b6477}
.due{color:var(--red);font-weight:700}
.paid{color:var(--green);font-weight:700}

/* ---------- forms ---------- */
label{display:block;font-size:13px;font-weight:600;color:#36415a;margin-bottom:5px}
.field{margin-bottom:12px}
input,select,textarea{width:100%;font:inherit;padding:10px 11px;border:1px solid #cfd6e3;border-radius:9px;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid rgba(19,55,125,.25);border-color:var(--navy-2)}
textarea{min-height:76px;resize:vertical}
input[type=checkbox]{width:auto;margin-right:6px;transform:scale(1.15)}
.check{display:flex;align-items:center;font-weight:500}
.row{display:grid;gap:12px;grid-template-columns:repeat(2,minmax(0,1fr))}
.row3{display:grid;gap:12px;grid-template-columns:repeat(3,minmax(0,1fr))}
.hint{font-size:12px;color:var(--muted);margin-top:4px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font:inherit;font-weight:600;font-size:14px;padding:10px 16px;border-radius:9px;border:1px solid var(--navy);background:var(--navy);color:#fff;cursor:pointer;white-space:nowrap;text-decoration:none!important}
.btn:hover{background:var(--navy-2)}
.btn.ghost{background:#fff;color:var(--navy)}
.btn.ghost:hover{background:var(--blue-bg)}
.btn.green{background:var(--green);border-color:var(--green)}
.btn.red{background:#fff;color:var(--red);border-color:#e7b4b4}
.btn.red:hover{background:var(--red-bg)}
.btn.wa{background:#1f9d55;border-color:#1f9d55}
.btn.sm{padding:6px 10px;font-size:13px}
.btn.block{width:100%}
.actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.inline{display:inline}
.filters{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.filters input,.filters select{width:auto;min-width:140px;padding:8px 10px}
.tabs{display:flex;gap:4px;flex-wrap:wrap}
.tabs a{padding:7px 12px;border-radius:8px;font-size:14px;color:var(--muted);font-weight:600}
.tabs a.on{background:var(--navy);color:#fff}
.tabs a:hover{text-decoration:none;background:var(--blue-bg);color:var(--navy)}
.tabs a.on:hover{background:var(--navy);color:#fff}

/* ---------- flash ---------- */
.flash{padding:11px 14px;border-radius:10px;margin-bottom:14px;font-weight:500}
.flash.ok{background:var(--green-bg);color:var(--green);border:1px solid #bfe6d2}
.flash.err{background:var(--red-bg);color:var(--red);border:1px solid #f1c3c3}

details.box{border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:#fbfcfe}
details.box + details.box{margin-top:10px}
details.box summary{cursor:pointer;font-weight:600}
details.box[open] summary{margin-bottom:10px}

.kv{display:grid;grid-template-columns:150px 1fr;gap:6px 12px;font-size:14px}
.kv dt{color:var(--muted)}
.kv dd{margin:0}
.list-item{display:flex;justify-content:space-between;gap:10px;padding:9px 0;border-bottom:1px solid var(--line)}
.list-item:last-child{border-bottom:0}
.empty{padding:22px;text-align:center;color:var(--muted)}

/* rooms */
.rooms{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}
.room{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px;box-shadow:var(--shadow)}
.room.off{opacity:.55}
.room-h{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.room-h b{font-size:17px}
.bed{display:flex;justify-content:space-between;gap:6px;font-size:13px;padding:6px 8px;border-radius:7px;margin-top:4px;background:var(--green-bg);color:var(--green)}
.bed.taken{background:#f1f3f8;color:var(--ink)}
.bed.notice{background:var(--amber-bg);color:var(--amber)}

/* login */
.login-bg{min-height:100vh;display:grid;place-items:center;padding:20px;background:linear-gradient(160deg,#0b2a63 0%,#13377d 55%,#1d4aa0 100%)}
.login{width:100%;max-width:380px;background:#fff;border-radius:16px;padding:28px 26px;box-shadow:0 20px 50px rgba(0,0,0,.25)}
.login img{display:block;width:170px;margin:0 auto 6px}
.login h1{text-align:center;font-size:19px;margin:6px 0 2px}
.login p.sub{text-align:center;margin:0 0 20px;color:var(--muted);font-size:14px}

/* receipt */
.receipt{max-width:440px;margin:24px auto;background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:var(--shadow)}
.receipt .rh{display:flex;align-items:center;gap:12px;border-bottom:2px dashed var(--line);padding-bottom:14px;margin-bottom:14px}
.receipt .rh img{height:52px}
.receipt .amt{font-size:32px;font-weight:800;text-align:center;margin:10px 0 4px;color:var(--navy)}
.receipt .stamp{display:inline-block;border:2px solid var(--green);color:var(--green);font-weight:800;padding:2px 10px;border-radius:6px;transform:rotate(-4deg);letter-spacing:.1em}
.receipt .stamp.void{border-color:var(--red);color:var(--red)}

/* tenant portal */
.t-top{background:var(--navy);color:#fff;padding:14px 16px}
.t-top .in{max-width:760px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:10px}
.t-top img{height:30px}
.t-top button{background:rgba(255,255,255,.12);border:0;color:#fff;padding:7px 12px;border-radius:8px;font:inherit;cursor:pointer}
.t-wrap{max-width:760px;margin:0 auto;padding:16px 16px 60px}
.bal{border-radius:16px;padding:20px;color:#fff;background:linear-gradient(135deg,#0b2a63,#1d4aa0)}
.bal .v{font-size:34px;font-weight:800;margin:4px 0}

/* mobile */
.bottom{display:none}
@media (max-width:900px){
  .side{transform:translateX(-100%);transition:transform .2s;width:260px}
  .side.open{transform:none;box-shadow:0 0 0 100vmax rgba(0,0,0,.35)}
  .main{margin-left:0}
  .top{display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--navy);color:#fff;padding:10px 14px;position:sticky;top:0;z-index:20}
  .top img{height:28px}
  .top button{background:none;border:0;color:#fff;padding:6px;cursor:pointer;display:flex}
  .top button svg{width:24px;height:24px}
  .top b{font-size:15px}
  .wrap{padding:14px 12px 96px}
  .g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .g3,.g2{grid-template-columns:1fr}
  .row,.row3{grid-template-columns:1fr}
  .kv{grid-template-columns:120px 1fr}
  .stat .v{font-size:20px}
  .bottom{display:flex;position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--line);z-index:25;padding-bottom:env(safe-area-inset-bottom)}
  .bottom a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:11px;color:var(--muted);padding:8px 0 7px;font-weight:600}
  .bottom a svg{width:22px;height:22px}
  .bottom a.on{color:var(--navy)}
  .bottom a.cta{color:var(--green)}
  .hide-m{display:none}
  th,td{padding:8px 7px}
}
@media print{
  .side,.top,.bottom,.noprint{display:none!important}
  .main{margin:0}
  body{background:#fff}
  .receipt{box-shadow:none;border:0;margin:0 auto}
}

/* bulk action bar */
.bulkbar{position:fixed;left:236px;right:0;bottom:0;z-index:28;background:var(--navy-ink);color:#fff;padding:10px 18px;display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;box-shadow:0 -4px 16px rgba(0,0,0,.18)}
.bulkbar label{color:#fff}
.bulkbar .btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.bulkbar .btn.red{background:#fff}
@media (max-width:900px){.bulkbar{left:0;bottom:56px;padding:10px 12px}}
.bulkbar .btn:not(.ghost):not(.red){background:#fff;color:var(--navy);border-color:#fff}
.bulk-spacer{height:150px}