:root{
  --white:#FFFFFF; --blue:#0047AB; --blue-deep:#00306F;
  --blue-tint:#EEF3FB; --blue-tint-2:#DCE7F7; --ink:#1A2233; --ink-soft:#5A6478;
  --border:#D9E0EA; --green:#1E8E5A; --green-tint:#E5F5EC; --amber:#B7791F;
  --amber-tint:#FBF1E0; --red:#C0392B; --red-tint:#FBEAE8; --radius:4px;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{font-family:'Segoe UI',system-ui,sans-serif;background:var(--white);color:var(--ink);font-size:13.5px;line-height:1.45;}
#app{display:flex;min-height:100vh;}
.sidebar{width:216px;flex-shrink:0;background:var(--blue-deep);color:#fff;display:flex;flex-direction:column;}
.sidebar .brand{display:flex;align-items:center;gap:8px;padding:14px;border-bottom:1px solid rgba(255,255,255,.12);}
.sidebar .brand img{width:34px;height:34px;object-fit:contain;filter:brightness(0) invert(1);}
.sidebar .brand .t1{font-size:11px;letter-spacing:.02em;color:#B9CBEA;line-height:1.2;}
.sidebar .brand .t2{font-size:13.5px;font-weight:700;line-height:1.2;}
.nav-group{padding:10px 0;}
.nav-label{font-size:10px;text-transform:uppercase;letter-spacing:.06em;color:#8FA5CE;padding:10px 16px 4px;}
.nav-item{display:flex;align-items:center;gap:9px;padding:8px 16px;color:#D6E1F5;text-decoration:none;font-size:13px;font-weight:500;cursor:pointer;border-left:3px solid transparent;}
.nav-item:hover{background:rgba(255,255,255,.06);}
.nav-item.active{background:rgba(255,255,255,.1);color:#fff;border-left-color:#fff;}
.nav-item .ic{width:16px;text-align:center;font-size:13px;opacity:.9;}
.sidebar-foot{margin-top:auto;padding:12px 16px;border-top:1px solid rgba(255,255,255,.12);font-size:11.5px;color:#9FB3D8;}
.main{flex:1;display:flex;flex-direction:column;min-width:0;}
.topbar{height:48px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 16px;background:#fff;flex-shrink:0;}
.topbar .crumb{font-size:12.5px;color:var(--ink-soft);}
.topbar .crumb b{color:var(--ink);font-weight:600;}
.topbar .right{display:flex;align-items:center;gap:14px;}
.hostel-switch{font-size:12px;border:1px solid var(--border);border-radius:var(--radius);padding:5px 9px;background:var(--blue-tint);color:var(--blue-deep);font-weight:600;cursor:pointer;}
.role-pill{font-size:11px;background:var(--blue-tint-2);color:var(--blue-deep);padding:3px 8px;border-radius:10px;font-weight:600;}
.user-chip{display:flex;align-items:center;gap:7px;font-size:12.5px;}
.avatar{width:24px;height:24px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;}
.content{flex:1;overflow-y:auto;padding:16px 20px;}
h1.page-title{font-size:17px;font-weight:700;margin:0 0 3px;}
.page-sub{color:var(--ink-soft);font-size:12.5px;margin:0 0 16px;}
.kpi-row{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:16px;}
.kpi{border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px;background:#fff;}
.kpi .label{font-size:11px;color:var(--ink-soft);margin-bottom:5px;}
.kpi .value{font-size:19px;font-weight:700;color:var(--ink);}
.kpi .value.blue{color:var(--blue);}
.panel{border:1px solid var(--border);border-radius:var(--radius);background:#fff;margin-bottom:16px;}
.panel-head{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;border-bottom:1px solid var(--border);}
.panel-head h2{font-size:13.5px;margin:0;font-weight:700;}
.panel-body{padding:14px;}
.btn{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;padding:6px 12px;border-radius:var(--radius);border:1px solid var(--border);background:#fff;color:var(--ink);cursor:pointer;text-decoration:none;}
.btn:hover{background:var(--blue-tint);}
.btn-primary{background:var(--blue);border-color:var(--blue);color:#fff;}
.btn-primary:hover{background:var(--blue-deep);}
.btn-sm{padding:4px 9px;font-size:11.5px;}
.btn-danger{color:var(--red);border-color:var(--red-tint);}
.btn-danger:hover{background:var(--red-tint);}
.btn-ghost{border-color:transparent;background:transparent;}
.btn-ghost:hover{background:var(--blue-tint);}
table.data{width:100%;border-collapse:collapse;font-size:12.5px;}
table.data th{text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.03em;color:var(--ink-soft);padding:7px 10px;border-bottom:1px solid var(--border);background:var(--blue-tint);white-space:nowrap;}
table.data td{padding:7px 10px;border-bottom:1px solid #EEF1F6;}
table.data tbody tr:hover{background:var(--blue-tint);}
.status{display:inline-block;font-size:10.5px;font-weight:700;padding:2px 7px;border-radius:9px;}
.status.unpaid{background:var(--red-tint);color:var(--red);}
.status.partial{background:var(--amber-tint);color:var(--amber);}
.status.paid{background:var(--green-tint);color:var(--green);}
.status.void{background:#EEE;color:#777;}
.status.clearance{background:var(--blue-tint-2);color:var(--blue-deep);}
.form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px 14px;}
.form-grid.two{grid-template-columns:repeat(2,1fr);}
.field{display:flex;flex-direction:column;gap:4px;}
.field.span2{grid-column:span 2;}
.field.span3{grid-column:span 3;}
.field label{font-size:11.5px;font-weight:600;color:var(--ink-soft);}
.field label .req{color:var(--red);}
.field input, .field select, .field textarea{font-family:inherit;font-size:12.5px;padding:6px 9px;border:1px solid var(--border);border-radius:var(--radius);background:#fff;color:var(--ink);}
.field input:focus, .field select:focus, .field textarea:focus{outline:2px solid var(--blue-tint-2);border-color:var(--blue);}
.field input[readonly]{background:#F5F7FA;color:var(--ink-soft);}
.field textarea{resize:vertical;min-height:44px;}
.hint{font-size:10.5px;color:var(--ink-soft);}
.divider{height:1px;background:var(--border);margin:14px 0;}
.section-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--blue-deep);margin:0 0 10px;}
.row-line{display:flex;gap:8px;align-items:flex-end;margin-bottom:8px;}
.row-line .field{flex:1;}
.row-line .amt{max-width:130px;}
.icon-btn{width:28px;height:28px;flex:0 0 auto;border:1px solid var(--border);border-radius:var(--radius);background:#fff;color:var(--red);cursor:pointer;font-size:14px;display:flex;align-items:center;justify-content:center;}
.icon-btn:hover{background:var(--red-tint);}
.add-row-btn{font-size:12px;color:var(--blue);font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:5px;background:none;border:none;padding:0;}
.totals-box{margin-top:10px;border-top:1px dashed var(--border);padding-top:10px;display:flex;justify-content:flex-end;}
.totals-box .tt{width:280px;}
.totals-box .tt-row{display:flex;justify-content:space-between;font-size:12.5px;padding:3px 0;}
.totals-box .tt-row.grand{font-weight:700;font-size:14px;border-top:1px solid var(--border);margin-top:4px;padding-top:6px;}
.totals-box .words{font-size:11px;color:var(--ink-soft);font-style:italic;margin-top:4px;text-align:right;}
.form-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:16px;padding-top:12px;border-top:1px solid var(--border);}
.tabs{display:flex;gap:2px;border-bottom:1px solid var(--border);margin-bottom:14px;}
.tab{padding:8px 14px;font-size:12.5px;font-weight:600;color:var(--ink-soft);cursor:pointer;border-bottom:2px solid transparent;text-decoration:none;}
.tab.active{color:var(--blue);border-bottom-color:var(--blue);}
.filter-bar{display:flex;gap:8px;align-items:center;margin-bottom:12px;flex-wrap:wrap;}
.filter-bar input, .filter-bar select{font-size:12px;padding:6px 9px;border:1px solid var(--border);border-radius:var(--radius);}
.search-box{flex:1;min-width:180px;}
.badge-role{font-size:10.5px;background:var(--blue-tint-2);color:var(--blue-deep);padding:2px 7px;border-radius:9px;font-weight:600;}
.notice{display:flex;gap:8px;align-items:flex-start;font-size:12px;padding:9px 12px;border-radius:var(--radius);background:var(--blue-tint);color:var(--blue-deep);border:1px solid var(--blue-tint-2);margin-bottom:14px;}
.notice.warn{background:var(--red-tint);color:var(--red);border-color:#F3C8C2;}
.detail-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px 18px;}
.detail-item .dl{font-size:10.5px;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.03em;margin-bottom:2px;}
.detail-item .dv{font-size:13px;font-weight:600;}
.detail-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:14px;}
.detail-header .htitle{font-size:16px;font-weight:700;margin:0 0 3px;}
.detail-header .hsub{font-size:12px;color:var(--ink-soft);}
.detail-actions{display:flex;gap:8px;flex-wrap:wrap;}
.timeline{border-left:2px solid var(--border);margin-left:6px;padding-left:14px;}
.timeline .tl-item{position:relative;padding-bottom:14px;font-size:12px;}
.timeline .tl-item::before{content:"";position:absolute;left:-19px;top:3px;width:8px;height:8px;border-radius:50%;background:var(--blue);}
.timeline .tl-item .tl-t{color:var(--ink-soft);font-size:11px;}
.login-wrap{display:flex;min-height:100vh;align-items:center;justify-content:center;background:linear-gradient(180deg,#F5F8FD 0%,#EAF0FA 100%);}
.login-box{width:360px;background:#fff;border:1px solid var(--border);border-radius:6px;box-shadow:0 4px 24px rgba(20,40,90,.08);padding:28px 28px 24px;}
.login-box .lg{display:flex;flex-direction:column;align-items:center;text-align:center;margin-bottom:18px;}
.login-box .lg img{width:56px;height:56px;object-fit:contain;margin-bottom:8px;}
.login-box .lg .u2{font-size:15px;font-weight:700;color:var(--blue-deep);}
.login-box .field{margin-bottom:12px;}
.login-box .btn-primary{width:100%;justify-content:center;padding:8px;}
.login-error{background:var(--red-tint);color:var(--red);font-size:12px;padding:8px 10px;border-radius:var(--radius);margin-bottom:12px;}