:root{
  --bg:#f4f6fb; --panel:#ffffff; --ink:#1f2733; --muted:#7a8699;
  --line:#e6eaf2; --brand:#4f46e5; --brand-d:#4338ca;
  --green:#16a34a; --green-bg:#e7f7ec; --amber:#d97706; --amber-bg:#fdf2e0;
  --blue:#2563eb; --blue-bg:#e8f0fe; --red:#dc2626; --red-bg:#fde8e8;
  --shadow:0 1px 3px rgba(16,24,40,.08),0 1px 2px rgba(16,24,40,.06);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font-family:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink);font-size:14px}
.app{display:flex;min-height:100vh}
a{color:inherit}

/* Sidebar */
.sidebar{width:240px;background:#111827;color:#cbd5e1;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.brand{display:flex;gap:10px;align-items:center;padding:18px 16px;border-bottom:1px solid #1f2937}
.brand-logo{font-size:24px}
.brand-name{font-weight:700;color:#fff;line-height:1.1;font-size:15px}
.nav{padding:10px;display:flex;flex-direction:column;gap:4px;flex:1}
.nav-item{background:none;border:0;color:#cbd5e1;text-align:left;padding:11px 12px;border-radius:8px;cursor:pointer;font-size:14px;display:flex;gap:10px;align-items:center}
.nav-item:hover{background:#1f2937;color:#fff}
.nav-item.active{background:var(--brand);color:#fff}
.nav-item .ico{width:20px;text-align:center}
.sidebar-footer{padding:12px;border-top:1px solid #1f2937}

/* Main */
.main{flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{display:flex;gap:12px;align-items:center;padding:14px 22px;background:var(--panel);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.search-wrap{flex:1;max-width:540px;position:relative}
.search-wrap input{width:100%;padding:10px 14px 10px 38px;border:1px solid var(--line);border-radius:10px;background:#f8fafc;font-size:14px;outline:none}
.search-wrap input:focus{border-color:var(--brand);background:#fff}
.search-wrap::before{content:'🔍';position:absolute;left:12px;top:50%;transform:translateY(-50%);opacity:.5}
.top-actions{margin-left:auto}

/* Buttons */
.btn{border:0;border-radius:9px;padding:9px 14px;font-size:13px;font-weight:600;cursor:pointer;font-family:inherit}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-d)}
.btn-soft{background:var(--blue-bg);color:var(--blue)}
.btn-soft:hover{filter:brightness(.97)}
.btn-danger{background:var(--red-bg);color:var(--red)}
.btn-ghost{background:#f1f5f9;color:var(--ink)}
.btn-block{width:100%}
.icon-btn{border:0;background:transparent;cursor:pointer;font-size:14px;padding:5px 7px;border-radius:6px;color:var(--muted)}
.icon-btn:hover{background:#f1f5f9}
.icon-btn.danger:hover{background:var(--red-bg);color:var(--red)}
.link{color:var(--brand);cursor:pointer;font-weight:600}
.link:hover{text-decoration:underline}

/* Dashboard */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;padding:20px 22px 0}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px;box-shadow:var(--shadow)}
.stat .lbl{color:var(--muted);font-size:12px;font-weight:600}
.stat .val{font-size:24px;font-weight:800;margin-top:6px}
.stat .sub{font-size:12px;color:var(--muted);margin-top:2px}
.panels{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:16px 22px 22px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px;box-shadow:var(--shadow)}
.panel h3{margin:0 0 10px;font-size:15px}

/* Tables */
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{padding:9px 10px;text-align:left;border-bottom:1px solid var(--line)}
th{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.03em;font-weight:700}
.right{text-align:right}
.amt-pay{color:var(--green);font-weight:700}
.amt-charge{color:var(--red);font-weight:700}
.note-cell{color:var(--muted);max-width:220px}

/* Inventory / Rooms */
.section-head{display:flex;justify-content:space-between;align-items:baseline;padding:20px 22px 0}
.section-head h2{margin:0;font-size:18px}
.muted{color:var(--muted)}
.empty{padding:40px;text-align:center;color:var(--muted)}
.room-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:16px;padding:20px 22px}
.room-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:12px}
.room-card.status-occupied{border-left:4px solid var(--blue)}
.room-card.status-partial{border-left:4px solid var(--amber)}
.room-card.status-available{border-left:4px solid var(--green)}
.room-head{display:flex;justify-content:space-between;align-items:flex-start}
.room-num{font-weight:700;font-size:17px}
.room-type{color:var(--muted);font-size:12px}
.room-meta{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.badge{padding:3px 9px;border-radius:999px;font-size:11px;font-weight:700;white-space:nowrap}
.badge-available{background:var(--green-bg);color:var(--green)}
.badge-partial{background:var(--amber-bg);color:var(--amber)}
.badge-occupied{background:var(--blue-bg);color:var(--blue)}
.badge-due{background:var(--red-bg);color:var(--red)}
.badge-due-strong{background:#dc2626;color:#fff}
.badge-cash{background:#f1f5f9;color:#475569}
.badge-ewallet{background:#e0e7ff;color:#4338ca}
.panel table tbody tr:hover{background:#f8fafc}
.panel.accent-due{border-top:3px solid var(--red)}
.panel.accent-pay{border-top:3px solid var(--green)}
.room-cap,.room-rent{font-size:12px;color:var(--muted)}
.tenant-list{display:flex;flex-direction:column;gap:8px;min-height:8px}
.chip{display:flex;align-items:center;gap:9px;background:#f8fafc;border:1px solid var(--line);border-radius:10px;padding:8px 10px;cursor:pointer;text-align:left;width:100%;font-family:inherit}
.chip:hover{border-color:var(--brand);background:#fff}
.chip-owed{border-color:#f3c7c7}
.chip-avatar{width:30px;height:30px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:12px;flex:0 0 auto}
.chip-name{flex:1;font-weight:600;font-size:13px}
.chip-bal{font-size:11px;color:var(--red);font-weight:700}
.no-tenant{color:var(--muted);font-size:12px;font-style:italic;padding:4px 0}
.full-note{font-size:12px;color:var(--muted);text-align:center;padding:6px}

/* Modal */
.modal-root{position:fixed;inset:0;z-index:50;display:none}
.modal-root.open{display:block}
.modal-overlay{position:absolute;inset:0;background:rgba(15,23,42,.5);backdrop-filter:blur(2px)}
.modal{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:min(640px,94vw);max-height:92vh;overflow:auto;background:var(--panel);border-radius:16px;box-shadow:0 20px 60px rgba(2,6,23,.35);padding:20px}
.modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.modal-head h3{margin:0;font-size:18px}
.modal h4{margin:18px 0 8px;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
.modal .muted{font-size:12px}

/* Forms */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.field{display:flex;flex-direction:column;gap:4px}
.field.full{grid-column:1/-1}
.field label{font-size:12px;color:var(--muted);font-weight:600}
.field input,.field select,.field textarea{padding:8px 10px;border:1px solid var(--line);border-radius:8px;font-size:13px;font-family:inherit;outline:none;width:100%}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand)}

/* Balance */
.bal-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:6px 0 4px}
.bal-box{background:#f8fafc;border:1px solid var(--line);border-radius:10px;padding:10px;text-align:center}
.bal-box .lbl{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.03em}
.bal-box .val{font-size:16px;font-weight:700;margin-top:3px}
.bal-due .val{color:var(--red)} .bal-credit .val{color:var(--green)} .bal-zero .val{color:var(--ink)}

/* Toast */
.toast-root{position:fixed;bottom:20px;right:20px;z-index:80;display:flex;flex-direction:column;gap:8px}
.toast{background:#111827;color:#fff;padding:11px 16px;border-radius:10px;font-size:13px;box-shadow:0 8px 24px rgba(2,6,23,.3);animation:slidein .2s ease;max-width:300px}
.toast.success{background:#16a34a}.toast.error{background:#dc2626}
@keyframes slidein{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* Login */
.login-screen{position:fixed;inset:0;z-index:100;background:linear-gradient(135deg,#4f46e5,#7c3aed);display:flex;align-items:center;justify-content:center;padding:20px}
.login-card{background:#fff;border-radius:18px;padding:30px;width:min(360px,94vw);box-shadow:0 20px 60px rgba(2,6,23,.4);text-align:center}
.login-logo{font-size:46px;margin-bottom:4px}
.login-card h2{margin:0;font-size:20px}
.login-card .field{text-align:left;margin-top:12px}
.login-card .btn-block{margin-top:16px;width:100%;padding:11px}
.login-error{color:var(--red);font-size:13px;margin-top:10px;min-height:14px}
body.logged-in .login-screen{display:none}
body:not(.logged-in) .app{display:none}

/* Reports toolbar */
.report-bar{display:flex;gap:12px;align-items:center;flex-wrap:wrap;padding:14px 22px 0}
.rep-field{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:5px}
.rep-field input{border:1px solid var(--line);border-radius:7px;padding:6px 8px;font-family:inherit;font-size:12px;outline:none}
.rep-field input:focus{border-color:var(--brand)}

/* Notifications */
.bell-btn{position:relative;background:#f1f5f9;border:0;border-radius:10px;width:38px;height:38px;font-size:18px;cursor:pointer}
.bell-btn:hover{background:#e8edf5}
.bell-badge{position:absolute;top:-5px;right:-5px;background:var(--red);color:#fff;font-size:10px;font-weight:700;border-radius:999px;min-width:17px;height:17px;display:flex;align-items:center;justify-content:center;padding:0 4px}
.bell-badge[hidden]{display:none}
.notif-panel{position:absolute;top:58px;right:18px;width:320px;max-height:60vh;overflow:auto;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 12px 30px rgba(2,6,23,.25);z-index:55;display:none}
.notif-panel.show{display:block}
.notif-head{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;border-bottom:1px solid var(--line)}
.notif-head h4{margin:0;font-size:14px}
.notif-item{padding:10px 14px;border-bottom:1px solid var(--line);font-size:13px}
.notif-item.unread{background:#f5f8ff}
.notif-item .ni-time{font-size:11px;color:var(--muted);margin-top:2px}
.notif-empty{padding:18px;text-align:center;color:var(--muted);font-size:13px}
.pay-popup{position:fixed;top:18px;left:50%;transform:translateX(-50%) translateY(-20px);z-index:120;background:#fff;border:1px solid var(--line);border-left:4px solid var(--green);border-radius:12px;box-shadow:0 12px 30px rgba(2,6,23,.25);padding:14px 16px;display:flex;gap:12px;align-items:center;min-width:280px;max-width:92vw;opacity:0;pointer-events:none;transition:.25s}
.pay-popup.show{opacity:1;transform:translateX(-50%) translateY(0);pointer-events:auto}
.pay-popup .pp-ico{font-size:26px}
.pay-popup .pp-title{font-weight:700;font-size:14px}
.pay-popup .pp-sub{font-size:12px;color:var(--muted)}
.pay-popup .pp-close{margin-left:auto;cursor:pointer;color:var(--muted);background:none;border:0;font-size:16px}

@media(max-width:820px){
  .sidebar{width:64px}
  .brand-name{display:none}
  .nav-item .lbl{display:none}
  .panels{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
}

/* Sync status badge (online version) */
.sync-badge{font-size:12px;padding:6px 10px;border-radius:999px;white-space:nowrap;border:1px solid transparent}
.sync-badge:empty{display:none}
.sync-badge.saved{background:#ecfdf5;color:#047857;border-color:#a7f3d0}
.sync-badge.saving{background:#f1f5f9;color:#475569;border-color:#e2e8f0}
.sync-badge.offline{background:#fef2f2;color:#b91c1c;border-color:#fecaca}

/* Housemate portal mode */
body.portal-mode .sidebar,
body.portal-mode .topbar{display:none}
body.portal-mode .main{margin:0}
body.portal-mode .content{max-width:100%}
.login-tabs .btn{font-size:13px}