/* ── Property Management Platform v2.0 ── */
*{margin:0;padding:0;box-sizing:border-box}

:root{
  --primary:#2563eb;--primary-light:#3b82f6;--primary-dark:#1d4ed8;
  --success:#10b981;--warning:#f59e0b;--danger:#ef4444;
  --bg:#f0f2f5;--card:#fff;--text:#1f2937;--text-secondary:#6b7280;
  --border:#e5e7eb;--radius:12px;--shadow:0 1px 3px rgba(0,0,0,.08);
  --shadow-lg:0 4px 24px rgba(0,0,0,.12);
  --sidebar-w:220px;
}

body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6;
  -webkit-font-smoothing:antialiased;min-height:100vh;
}

/* ── Login Page ── */
.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px;background:linear-gradient(135deg,#1e3a5f 0%,#2563eb 100%)}
.login-card{background:var(--card);border-radius:16px;padding:32px 28px;width:100%;max-width:400px;box-shadow:var(--shadow-lg);animation:fadeUp .4s ease}
.login-card h2{font-size:22px;text-align:center;margin-bottom:6px}
.login-card .subtitle{text-align:center;color:var(--text-secondary);font-size:13px;margin-bottom:24px}
.login-card .logo{text-align:center;font-size:48px;margin-bottom:12px}

/* ── Loading ── */
.loading-overlay{
  position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(255,255,255,.9);
  display:flex;align-items:center;justify-content:center;z-index:9999;flex-direction:column;
}
.spinner{width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}

/* ── Mobile App Layout ── */
.app-container{max-width:480px;margin:0 auto;min-height:100vh;position:relative}
.app-header{
  background:linear-gradient(135deg,var(--primary-dark),var(--primary));
  color:#fff;padding:14px 18px;display:flex;justify-content:space-between;align-items:center;
  position:sticky;top:0;z-index:100;
}
.app-header h1{font-size:17px;font-weight:600}
.app-header .header-actions{display:flex;gap:12px;align-items:center}
.header-btn{
  background:rgba(255,255,255,.2);border:none;color:#fff;width:32px;height:32px;
  border-radius:8px;cursor:pointer;font-size:16px;position:relative;
}
.header-btn .notif-dot{
  position:absolute;top:-2px;right:-2px;width:8px;height:8px;background:var(--danger);
  border-radius:50%;display:none;
}
.header-btn .notif-dot.show{display:block}

/* ── Tabs ── */
.tab-content{display:none;padding:16px 16px 80px;animation:fadeIn .3s ease}
.tab-content.active{display:block}

/* ── Stats Grid ── */
.stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px}
.stat-card{
  background:var(--card);border-radius:var(--radius);padding:14px;
  box-shadow:var(--shadow);display:flex;align-items:center;gap:10px;
}
.stat-icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px}
.stat-icon.blue{background:#eff6ff;color:var(--primary)}
.stat-icon.green{background:#ecfdf5;color:var(--success)}
.stat-icon.orange{background:#fffbeb;color:var(--warning)}
.stat-icon.red{background:#fef2f2;color:var(--danger)}
.stat-value{font-size:20px;font-weight:700;line-height:1.2}
.stat-label{font-size:11px;color:var(--text-secondary)}

/* ── Quick Actions ── */
.quick-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:14px}
.quick-action{
  background:var(--card);border-radius:var(--radius);padding:12px 6px;
  box-shadow:var(--shadow);text-align:center;cursor:pointer;border:none;
  font-size:12px;color:var(--text);transition:transform .15s;
}
.quick-action:hover{transform:translateY(-2px)}
.quick-action .qa-icon{font-size:26px;display:block;margin-bottom:4px}

/* ── Cards ── */
.card{background:var(--card);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow);margin-bottom:10px}
.card-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:6px}
.card-title{font-size:14px;font-weight:600}

/* ── Badges ── */
.badge{display:inline-block;padding:2px 8px;border-radius:12px;font-size:11px;font-weight:500}
.badge-success{background:#ecfdf5;color:#059669}
.badge-warning{background:#fffbeb;color:#d97706}
.badge-danger{background:#fef2f2;color:#dc2626}
.badge-info{background:#eff6ff;color:var(--primary)}
.badge-default{background:#f3f4f6;color:var(--text-secondary)}

/* ── Buttons ── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:4px;
  padding:10px 18px;border-radius:8px;font-size:14px;font-weight:500;
  border:none;cursor:pointer;transition:all .2s;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark)}
.btn-success{background:var(--success);color:#fff}
.btn-danger{background:var(--danger);color:#fff}
.btn-outline{background:transparent;border:1.5px solid var(--border);color:var(--text)}
.btn-sm{padding:5px 10px;font-size:12px}
.btn-block{width:100%}
.btn-icon{width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;border:none;cursor:pointer;font-size:16px;background:#f3f4f6}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* ── Forms ── */
.form-group{margin-bottom:14px}
.form-label{display:block;font-size:13px;font-weight:500;margin-bottom:4px;color:var(--text-secondary)}
.form-input,.form-select,.form-textarea{
  width:100%;padding:10px 12px;border:1.5px solid var(--border);border-radius:8px;
  font-size:14px;font-family:inherit;transition:border .2s;background:#fafafa;
}
.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--primary);background:#fff}
.form-textarea{resize:vertical;min-height:80px}

/* ── WeChat Pay Modal ── */
.pay-modal .pay-header{text-align:center;padding:16px 0}
.pay-modal .pay-amount{font-size:36px;font-weight:700;color:var(--text);margin:16px 0}
.pay-modal .pay-desc{font-size:13px;color:var(--text-secondary);margin-bottom:20px}
.pay-modal .pay-qr-placeholder{
  width:180px;height:180px;margin:0 auto 16px;background:#f9fafb;
  border:2px dashed var(--border);border-radius:12px;display:flex;
  align-items:center;justify-content:center;font-size:64px;
}
.pay-modal .pay-methods{display:flex;gap:12px;justify-content:center;margin-bottom:20px}
.pay-method{
  padding:8px 16px;border:2px solid var(--border);border-radius:8px;cursor:pointer;
  font-size:13px;background:var(--card);transition:all .2s;
}
.pay-method.active{border-color:var(--success);color:var(--success)}
.pay-modal .pay-buttons{display:flex;gap:10px}

/* ── Bottom Nav ── */
.bottom-nav{
  position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:480px;
  background:var(--card);border-top:1px solid var(--border);display:flex;
  padding:5px 0 env(safe-area-inset-bottom);z-index:100;
}
.nav-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:5px 0;border:none;background:none;cursor:pointer;color:var(--text-secondary);
  font-size:10px;transition:color .2s;position:relative;
}
.nav-item .nav-icon{font-size:21px;margin-bottom:1px}
.nav-item.active{color:var(--primary);font-weight:500}
.nav-item .nav-badge{
  position:absolute;top:0;right:calc(50% - 28px);background:var(--danger);
  color:#fff;font-size:10px;min-width:16px;height:16px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
}

/* ── Modals ── */
.modal-overlay{
  display:none;position:fixed;top:0;left:0;right:0;bottom:0;
  background:rgba(0,0,0,.5);z-index:200;justify-content:center;align-items:flex-end;
}
.modal-overlay.active{display:flex}
.modal{
  background:var(--card);border-radius:16px 16px 0 0;width:100%;max-width:480px;
  max-height:85vh;overflow-y:auto;padding:20px;animation:slideUp .3s ease;
}
@keyframes slideUp{from{transform:translateY(100%)}to{transform:translateY(0)}}
.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.modal-header h3{font-size:17px}
.modal-close{background:none;border:none;font-size:24px;cursor:pointer;color:var(--text-secondary)}

/* ── Section ── */
.section{margin-bottom:14px}
.section-title{font-size:14px;font-weight:600;margin-bottom:8px;display:flex;justify-content:space-between;align-items:center}
.section-title .more{font-size:12px;color:var(--primary);text-decoration:none;cursor:pointer}

/* ── List Items ── */
.list-item{
  display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--border);cursor:pointer;
}
.list-item:last-child{border-bottom:none}
.list-icon{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:17px;flex-shrink:0}
.list-info{flex:1;min-width:0}
.list-title{font-size:14px;font-weight:500}
.list-desc{font-size:12px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.list-right{text-align:right;flex-shrink:0}

/* ── Empty State ── */
.empty-state{text-align:center;padding:40px 20px;color:var(--text-secondary)}
.empty-icon{font-size:44px;margin-bottom:10px}

/* ── Toast ── */
.toast{
  position:fixed;top:20px;left:50%;transform:translateX(-50%);z-index:300;
  background:#1f2937;color:#fff;padding:10px 20px;border-radius:8px;
  font-size:14px;animation:fadeUp .3s ease;box-shadow:var(--shadow-lg);
}

/* ── Timeline ── */
.timeline-item{padding-left:22px;border-left:2px solid var(--border);padding-bottom:14px;position:relative}
.timeline-item:last-child{border-left-color:transparent}
.timeline-dot{position:absolute;left:-6px;top:2px;width:10px;height:10px;border-radius:50%;background:var(--border)}
.timeline-dot.active{background:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,.15)}
.timeline-dot.done{background:var(--success)}
.timeline-time{font-size:11px;color:var(--text-secondary)}

/* ── Dropdown ── */
.dropdown{position:relative;display:inline-block}
.dropdown-menu{
  display:none;position:absolute;right:0;top:100%;margin-top:4px;
  background:var(--card);border-radius:8px;box-shadow:var(--shadow-lg);
  min-width:140px;z-index:150;padding:4px;
}
.dropdown-menu.show{display:block}
.dropdown-item{
  display:block;width:100%;padding:8px 12px;border:none;background:none;text-align:left;
  font-size:13px;color:var(--text);border-radius:6px;cursor:pointer;
}
.dropdown-item:hover{background:#f3f4f6}
.dropdown-item.danger{color:var(--danger)}

/* ── Toggle ── */
.toggle-wrap{display:flex;align-items:center;gap:8px}
.toggle{width:42px;height:23px;background:#d1d5db;border-radius:12px;position:relative;cursor:pointer;transition:background .3s}
.toggle.active{background:var(--primary)}
.toggle::after{content:'';position:absolute;top:2px;left:2px;width:19px;height:19px;background:#fff;border-radius:50%;transition:transform .3s}
.toggle.active::after{transform:translateX(19px)}

/* ── Admin Layout ── */
.admin-layout{display:flex;min-height:100vh}
.admin-sidebar{
  width:var(--sidebar-w);background:linear-gradient(180deg,#1e293b,#0f172a);
  color:#fff;padding:20px 0;position:fixed;top:0;left:0;bottom:0;
  overflow-y:auto;z-index:50;
}
.admin-sidebar .sidebar-brand{padding:0 20px 20px;border-bottom:1px solid rgba(255,255,255,.1);margin-bottom:12px}
.admin-sidebar .sidebar-brand h2{font-size:16px}
.admin-sidebar .sidebar-brand p{font-size:11px;color:#94a3b8}
.sidebar-nav{padding:0 8px}
.sidebar-link{
  display:flex;align-items:center;gap:10px;padding:10px 12px;color:#cbd5e1;
  text-decoration:none;font-size:13px;border-radius:8px;margin-bottom:2px;cursor:pointer;
}
.sidebar-link:hover{background:rgba(255,255,255,.08);color:#fff}
.sidebar-link.active{background:var(--primary);color:#fff}
.sidebar-link .s-icon{font-size:16px;width:20px;text-align:center}
.admin-main{margin-left:var(--sidebar-w);flex:1;padding:24px;background:var(--bg);min-height:100vh}
.admin-main .page-title{font-size:20px;font-weight:600;margin-bottom:20px}

/* ── Admin Stats ── */
.admin-stats{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;margin-bottom:24px}
.admin-stat-card{
  background:var(--card);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);
  display:flex;justify-content:space-between;align-items:flex-start;
}
.admin-stat-card .asc-value{font-size:28px;font-weight:700;line-height:1}
.admin-stat-card .asc-label{font-size:12px;color:var(--text-secondary);margin-top:6px}
.admin-stat-card .asc-icon{font-size:32px;opacity:.6}

/* ── Admin Table ── */
.data-table{width:100%;border-collapse:collapse;background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.data-table th{text-align:left;padding:12px 14px;font-size:12px;font-weight:600;color:var(--text-secondary);background:#f9fafb;border-bottom:1px solid var(--border)}
.data-table td{padding:10px 14px;font-size:13px;border-bottom:1px solid var(--border)}
.data-table tr:hover td{background:#f9fafb}

/* ── Tabs in admin ── */
.admin-tabs{display:flex;gap:4px;border-bottom:2px solid var(--border);margin-bottom:16px}
.admin-tab{
  padding:8px 16px;border:none;background:none;font-size:13px;color:var(--text-secondary);
  cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;transition:all .2s;
}
.admin-tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:500}

/* ── QR Code Display ── */
.qr-display{text-align:center;padding:20px}
.qr-display img{max-width:240px;border-radius:8px;box-shadow:var(--shadow)}
.qr-display .qr-info{margin-top:12px;font-size:13px;color:var(--text-secondary)}

/* ── Notifications Panel ── */
.notif-panel{
  position:fixed;top:0;right:0;width:340px;height:100vh;background:var(--card);
  box-shadow:-4px 0 24px rgba(0,0,0,.15);z-index:250;transform:translateX(100%);
  transition:transform .3s ease;overflow-y:auto;padding:20px;
}
.notif-panel.open{transform:translateX(0)}
.notif-panel h3{font-size:16px;margin-bottom:12px}
.notif-item{
  padding:12px;border-radius:8px;margin-bottom:8px;background:#f9fafb;
  border-left:3px solid var(--primary);
}
.notif-item.unread{background:#eff6ff}
.notif-item .ni-title{font-size:13px;font-weight:500}
.notif-item .ni-content{font-size:12px;color:var(--text-secondary);margin-top:4px}
.notif-item .ni-time{font-size:10px;color:#9ca3af;margin-top:4px}

@media(max-width:768px){
  .admin-sidebar{display:none}
  .admin-main{margin-left:0}
}
@media(min-width:769px){
  body{background:var(--bg)}
}
::-webkit-scrollbar{width:4px}
::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:2px}