*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --brand:#2D6A4F;--brand2:#1B4332;--accent:#52B788;--light:#D8F3DC;
  --bg:#F8FAFB;--surface:#fff;--border:#E2E8F0;--text:#1A202C;--muted:#718096;
  --danger:#E53E3E;--warn:#DD6B20;--success:#38A169;--info:#3182CE;
  --radius:10px;--shadow:0 2px 12px rgba(0,0,0,.08);--sidebar-w:240px
}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--bg);color:var(--text);font-size:15px}
button{cursor:pointer;font-family:inherit;font-size:14px}
input,select,textarea{font-family:inherit;font-size:14px}

/* ── AUTH ── */
#auth-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand2),var(--brand));padding:16px}
.auth-card{background:var(--surface);border-radius:16px;padding:32px;width:100%;max-width:420px;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.auth-logo{text-align:center;margin-bottom:24px}
.auth-logo h1{color:var(--brand);font-size:24px;font-weight:700}
.auth-logo p{color:var(--muted);font-size:13px;margin-top:4px}
.auth-tabs{display:flex;gap:8px;margin-bottom:20px}
.auth-tabs button{flex:1;padding:10px;border:2px solid var(--border);border-radius:var(--radius);
  background:none;color:var(--muted);font-weight:500;transition:all .2s}
.auth-tabs button.active{border-color:var(--brand);background:var(--light);color:var(--brand)}
.form-group{margin-bottom:14px}
.form-group label{display:block;font-size:12px;font-weight:600;color:var(--muted);
  margin-bottom:5px;text-transform:uppercase;letter-spacing:.5px}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:10px 12px;border:1.5px solid var(--border);border-radius:var(--radius);
  outline:none;transition:border-color .2s;background:var(--surface)}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--brand)}
.btn-primary{width:100%;padding:12px;background:var(--brand);color:#fff;border:none;
  border-radius:var(--radius);font-weight:600;font-size:15px;transition:background .2s}
.btn-primary:hover{background:var(--brand2)}
.err-msg{color:var(--danger);font-size:13px;margin-top:8px;text-align:center}

/* ── APP SHELL ── */
#app-screen{display:none;min-height:100vh}
.sidebar{position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--brand2);color:#fff;display:flex;flex-direction:column;z-index:200;transition:transform .3s}
.sidebar-logo{padding:20px;border-bottom:1px solid rgba(255,255,255,.1)}
.sidebar-logo h2{font-size:17px;font-weight:700}
.sidebar-logo p{font-size:11px;opacity:.7;margin-top:3px}
.sidebar-nav{flex:1;padding:12px 0;overflow-y:auto}
.nav-item{display:flex;align-items:center;gap:10px;padding:11px 20px;font-size:14px;
  color:rgba(255,255,255,.8);cursor:pointer;border-left:3px solid transparent;transition:all .15s}
.nav-item:hover,.nav-item.active{background:rgba(255,255,255,.1);color:#fff;border-left-color:var(--accent)}
.nav-icon{font-size:16px;width:20px;text-align:center}
.sidebar-footer{padding:14px 20px;border-top:1px solid rgba(255,255,255,.1)}
.user-badge{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.avatar{width:34px;height:34px;border-radius:50%;background:var(--accent);display:flex;
  align-items:center;justify-content:center;font-weight:700;font-size:13px;color:var(--brand2);flex-shrink:0}
.user-info .name{font-weight:600;font-size:13px}
.user-info .role{font-size:11px;opacity:.7;text-transform:capitalize}
.btn-logout{width:100%;padding:8px;background:rgba(255,255,255,.1);color:#fff;border:none;border-radius:8px;font-size:13px}
.btn-logout:hover{background:rgba(255,255,255,.2)}
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:150}
@media(max-width:768px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .sidebar-overlay.open{display:block}
  .main-content{margin-left:0!important}
}
.main-content{margin-left:var(--sidebar-w);min-height:100vh}
.topbar{background:var(--surface);border-bottom:1px solid var(--border);padding:0 24px;height:56px;
  display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100}
.topbar-left{display:flex;align-items:center;gap:12px}
.menu-btn{display:none;background:none;border:none;font-size:22px;color:var(--text);padding:4px}
@media(max-width:768px){.menu-btn{display:block}}
.topbar h2{font-size:17px;font-weight:600}
.topbar-right{display:flex;align-items:center;gap:10px}

/* ── NOTIFICATIONS ── */
.notif-btn{position:relative;background:none;border:none;font-size:20px;padding:4px;cursor:pointer}
.notif-badge{position:absolute;top:-2px;right:-2px;background:var(--danger);color:#fff;border-radius:50%;
  width:16px;height:16px;font-size:10px;font-weight:700;display:none;align-items:center;justify-content:center}
.notif-dropdown{position:absolute;top:56px;right:16px;width:320px;max-width:calc(100vw - 32px);
  background:var(--surface);border:1px solid var(--border);border-radius:12px;
  box-shadow:0 8px 32px rgba(0,0,0,.15);z-index:300;display:none;max-height:400px;overflow-y:auto}
.notif-dropdown.open{display:block}
.notif-header{padding:14px 16px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}
.notif-header h4{font-size:14px;font-weight:600}
.notif-item{padding:12px 16px;border-bottom:1px solid var(--border);cursor:pointer;transition:background .15s}
.notif-item:hover{background:var(--bg)}
.notif-item.unread{background:#F0FFF4}
.notif-item .ntitle{font-size:13px;font-weight:600}
.notif-item .nbody{font-size:12px;color:var(--muted);margin-top:2px}
.notif-item .ntime{font-size:11px;color:var(--muted);margin-top:4px}

/* ── PAGES ── */
.page{padding:20px 24px;display:none}
.page.active{display:block}
@media(max-width:768px){.page{padding:16px}}

/* ── STATS ── */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;margin-bottom:20px}
.stat-card{background:var(--surface);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);border-top:4px solid var(--accent)}
.stat-card .value{font-size:26px;font-weight:700;color:var(--brand)}
.stat-card .label{font-size:11px;color:var(--muted);margin-top:3px;text-transform:uppercase;letter-spacing:.5px}

/* ── CARDS ── */
.card{background:var(--surface);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);margin-bottom:16px}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;flex-wrap:wrap;gap:8px}
.card-header h3{font-size:15px;font-weight:600}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:600px){.grid-2{grid-template-columns:1fr}}

/* ── TABLES ── */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;font-size:13px;min-width:480px}
th{background:var(--bg);padding:9px 12px;text-align:left;font-size:11px;font-weight:700;
  color:var(--muted);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border)}
td{padding:11px 12px;border-bottom:1px solid var(--border);vertical-align:middle}
tr:last-child td{border-bottom:none}
tr:hover td{background:var(--bg)}

/* ── BADGES ── */
.badge{display:inline-block;padding:2px 9px;border-radius:20px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.4px}
.badge-green{background:#C6F6D5;color:#276749}
.badge-yellow{background:#FEFCBF;color:#744210}
.badge-red{background:#FED7D7;color:#9B2C2C}
.badge-gray{background:#EDF2F7;color:#4A5568}
.badge-blue{background:#BEE3F8;color:#2A69AC}
.badge-purple{background:#E9D8FD;color:#553C9A}
.badge-orange{background:#FEEBC8;color:#744210}

/* ── BUTTONS ── */
.btn{padding:8px 14px;border-radius:8px;border:none;font-weight:600;font-size:13px;transition:all .2s;cursor:pointer}
.btn-sm{padding:5px 10px;font-size:12px;border-radius:6px}
.btn-green{background:var(--success);color:#fff}
.btn-red{background:var(--danger);color:#fff}
.btn-brand{background:var(--brand);color:#fff}
.btn-outline{background:none;border:1.5px solid var(--border);color:var(--text)}
.btn-warn{background:var(--warn);color:#fff}
.btn-info{background:var(--info);color:#fff}
.btn:hover{opacity:.85}
.btn-group{display:flex;gap:6px;flex-wrap:wrap}

/* ── MODAL ── */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:1000;align-items:center;justify-content:center;padding:16px}
.modal-overlay.open{display:flex}
.modal{background:var(--surface);border-radius:14px;padding:24px;width:100%;max-width:520px;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.modal h3{font-size:17px;font-weight:600;margin-bottom:16px}
.modal-footer{display:flex;gap:8px;justify-content:flex-end;margin-top:16px;flex-wrap:wrap}

/* ── MISC UI ── */
.code-card{background:var(--brand2);color:var(--accent);padding:14px 18px;border-radius:var(--radius);
  font-family:'Courier New',monospace;font-size:24px;font-weight:700;letter-spacing:4px;text-align:center;margin:10px 0}
.info-box{background:var(--light);border-left:4px solid var(--brand);padding:10px 14px;border-radius:0 8px 8px 0;font-size:13px;color:var(--brand2);margin:10px 0}
.warn-box{background:#FFFBEB;border-left:4px solid var(--warn);padding:10px 14px;border-radius:0 8px 8px 0;font-size:13px;color:#744210;margin:10px 0}
.empty-state{text-align:center;padding:32px 16px;color:var(--muted)}
.empty-state .icon{font-size:36px;margin-bottom:10px}
.verify-banner{background:#EBF8FF;border:1px solid #90CDF4;border-radius:var(--radius);
  padding:12px 16px;margin:10px 24px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.reminder-banner{background:#FFFBEB;border:1px solid #FBD38D;border-radius:var(--radius);padding:12px 16px;margin-bottom:14px;display:flex;align-items:flex-start;gap:10px}

/* ── MESSAGES ── */
.thread-list-item{padding:14px 16px;border-bottom:1px solid var(--border);cursor:pointer;transition:background .15s;display:flex;gap:12px;align-items:flex-start}
.thread-list-item:hover{background:var(--bg)}
.thread-list-item.unread{background:#F0FFF4}
.thread-avatar{width:38px;height:38px;border-radius:50%;background:var(--light);display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--brand);font-size:14px;flex-shrink:0}
.thread-info{flex:1;min-width:0}
.thread-info .tname{font-weight:600;font-size:13px}
.thread-info .tsubject{font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.thread-info .tlast{font-size:12px;color:var(--muted);margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.thread-time{font-size:11px;color:var(--muted);flex-shrink:0}

/* ── CHAT BUBBLES ── */
.chat-wrap{display:flex;flex-direction:column;gap:12px;padding:16px 0;max-height:400px;overflow-y:auto}
.bubble{max-width:75%;padding:10px 14px;border-radius:12px;font-size:13px;line-height:1.5}
.bubble.mine{align-self:flex-end;background:var(--brand);color:#fff;border-bottom-right-radius:4px}
.bubble.theirs{align-self:flex-start;background:var(--bg);border:1px solid var(--border);border-bottom-left-radius:4px}
.bubble .bname{font-size:11px;opacity:.75;margin-bottom:4px;font-weight:600}
.bubble .btime{font-size:11px;opacity:.6;margin-top:4px;text-align:right}

/* ── TICKETS ── */
.ticket-item{padding:14px 16px;border-bottom:1px solid var(--border);cursor:pointer;transition:background .15s}
.ticket-item:hover{background:var(--bg)}
.ticket-item .ttitle{font-weight:600;font-size:14px}
.ticket-item .tmeta{font-size:12px;color:var(--muted);margin-top:4px;display:flex;gap:12px;flex-wrap:wrap}

/* ── WATER BILLING ── */
.water-calc{background:var(--bg);border-radius:8px;padding:14px;margin:10px 0;font-size:13px}
.water-calc .row{display:flex;justify-content:space-between;padding:4px 0;border-bottom:1px solid var(--border)}
.water-calc .row:last-child{border-bottom:none;font-weight:700;color:var(--brand)}

/* ── TABS ── */
.landlord-tab{display:inline-flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.landlord-tab button{padding:6px 14px;border-radius:20px;border:1.5px solid var(--border);background:none;font-size:13px;cursor:pointer;transition:all .2s}
.landlord-tab button.active{border-color:var(--brand);background:var(--light);color:var(--brand);font-weight:600}

/* ── ANNOUNCEMENTS ── */
.announcement-card{border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:12px;background:var(--surface)}
.announcement-card.unread{border-left:4px solid var(--brand);background:#F0FFF4}
.announcement-card .ann-subject{font-weight:600;font-size:14px;margin-bottom:6px}
.announcement-card .ann-body{font-size:13px;color:var(--text);line-height:1.6}
.announcement-card .ann-meta{font-size:11px;color:var(--muted);margin-top:8px;display:flex;gap:12px;flex-wrap:wrap}

/* ── CONTRACT DOC ── */
.contract-doc-box{border:2px dashed var(--border);border-radius:var(--radius);padding:20px;text-align:center;margin:10px 0;transition:border-color .2s}
.contract-doc-box.has-doc{border-color:var(--success);background:#F0FFF4}
.upload-area{border:2px dashed var(--border);border-radius:var(--radius);padding:24px;text-align:center;cursor:pointer;transition:all .2s;background:var(--bg)}
.upload-area:hover{border-color:var(--brand);background:var(--light)}
.upload-area.uploading{opacity:.6;pointer-events:none}

/* ── NOTIFICATION PREFS ── */
.pref-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid var(--border)}
.pref-row:last-child{border-bottom:none}
.pref-label{font-size:13px;color:var(--text)}
.toggle{position:relative;width:40px;height:22px;flex-shrink:0}
.toggle input{opacity:0;width:0;height:0}
.toggle-slider{position:absolute;inset:0;background:#CBD5E0;border-radius:22px;transition:.3s;cursor:pointer}
.toggle-slider:before{content:'';position:absolute;height:16px;width:16px;left:3px;bottom:3px;background:#fff;border-radius:50%;transition:.3s}
.toggle input:checked+.toggle-slider{background:var(--brand)}
.toggle input:checked+.toggle-slider:before{transform:translateX(18px)}