:root{--primary:#4f46e5;--primary-light:#818cf8;--primary-dark:#3730a3;--primary-bg:#eef2ff;--success:#10b981;--warning:#f59e0b;--danger:#ef4444;--info:#3b82f6;--dark:#1e293b;--gray-50:#f8fafc;--gray-100:#f1f5f9;--gray-200:#e2e8f0;--gray-300:#cbd5e1;--gray-400:#94a3b8;--gray-500:#64748b;--gray-600:#475569;--gray-700:#334155;--gray-800:#1e293b;--gray-900:#0f172a;--sidebar-width:260px;--header-height:64px;--radius:12px;--radius-sm:8px;--shadow:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);--shadow-lg:0 10px 40px rgba(0,0,0,.08);--transition:all .2s ease}
*{margin:0;padding:0;box-sizing:border-box}
html,body{width:100%;overflow-x:hidden}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;background:var(--gray-50);color:var(--gray-800);line-height:1.6;min-height:100vh}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--primary-dark)}
.app-layout{display:flex;min-height:100vh;width:100%}
.sidebar{width:var(--sidebar-width);background:linear-gradient(180deg,var(--gray-900) 0%,#1a1f36 100%);color:#fff;position:fixed;left:0;top:0;bottom:0;z-index:100;display:flex;flex-direction:column;transition:var(--transition)}
.sidebar-brand{padding:20px 24px;border-bottom:1px solid rgba(255,255,255,.08);display:flex;align-items:center;gap:12px;height:var(--header-height)}
.sidebar-brand .brand-icon{width:36px;height:36px;background:var(--primary);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700}
.sidebar-brand .brand-text{font-size:16px;font-weight:700;letter-spacing:.5px}
.sidebar-nav{flex:1;padding:12px 0;overflow-y:auto}
.sidebar-section{padding:8px 24px 4px;font-size:11px;text-transform:uppercase;letter-spacing:1px;color:rgba(255,255,255,.35);font-weight:600}
.nav-item{display:flex;align-items:center;gap:12px;padding:11px 24px;color:rgba(255,255,255,.65);font-size:14px;transition:var(--transition);cursor:pointer;border-left:3px solid transparent}
.nav-item:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-item.active{color:#fff;background:rgba(79,70,229,.25);border-left-color:var(--primary)}
.nav-item .nav-icon{width:20px;text-align:center;font-size:16px}
.nav-item .nav-badge{margin-left:auto;background:var(--primary);padding:2px 8px;border-radius:10px;font-size:11px}
.main-content{flex:1;margin-left:var(--sidebar-width)}
.main-header{height:var(--header-height);background:#fff;border-bottom:1px solid var(--gray-200);display:flex;align-items:center;justify-content:space-between;padding:0 32px;position:sticky;top:0;z-index:50}
.main-header h2{font-size:18px;font-weight:600;color:var(--gray-900)}
.header-actions{display:flex;align-items:center;gap:16px}
.header-user{display:flex;align-items:center;gap:10px;padding:6px 12px 6px 6px;border-radius:50px;cursor:pointer;transition:var(--transition)}
.header-user:hover{background:var(--gray-100)}
.header-user .avatar{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-light));display:flex;align-items:center;justify-content:center;color:#fff;font-size:13px;font-weight:600}
.header-user .user-name{font-size:14px;font-weight:500;color:var(--gray-700)}
.main-body{padding:28px 32px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:28px}
.admin-stats-grid{grid-template-columns:repeat(6,1fr);gap:12px}
.stat-card{background:#fff;border-radius:8px;padding:20px 16px;box-shadow:0 1px 3px rgba(0,0,0,.08);transition:var(--transition)}
.stat-card:hover{box-shadow:0 4px 12px rgba(0,0,0,.1)}
.stat-card .stat-label{font-size:13px;color:var(--gray-600);margin-bottom:8px}
.stat-card .stat-value{font-size:24px;font-weight:700;color:var(--gray-900);line-height:1.2}
.user-stat-card{display:flex;justify-content:space-between;align-items:center;padding:20px}
.user-stat-card .stat-content{flex:1}
.user-stat-card .stat-label{margin-bottom:8px}
.user-stat-card .stat-icon-box{width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff;flex-shrink:0;margin-left:16px}
.card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:24px}
.card-header{padding:18px 24px;border-bottom:1px solid var(--gray-100);display:flex;align-items:center;justify-content:space-between}
.card-header h3{font-size:16px;font-weight:600;color:var(--gray-900)}
.card-body{padding:24px}
.card-footer{padding:14px 24px;border-top:1px solid var(--gray-100);background:var(--gray-50);border-radius:0 0 var(--radius) var(--radius)}
.table-container{overflow-x:auto}
table{width:100%;border-collapse:collapse}
table thead{background:var(--gray-50)}
table th{padding:12px 16px;text-align:left;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--gray-500);border-bottom:2px solid var(--gray-200)}
table td{padding:12px 16px;font-size:14px;border-bottom:1px solid var(--gray-100);color:var(--gray-700)}
table tbody tr:hover{background:var(--gray-50)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 20px;font-size:14px;font-weight:500;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition);text-decoration:none;line-height:1.4}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff}
.btn-success{background:var(--success);color:#fff}
.btn-success:hover{background:#059669;color:#fff}
.btn-danger{background:var(--danger);color:#fff}
.btn-danger:hover{background:#dc2626;color:#fff}
.btn-warning{background:var(--warning);color:#fff}
.btn-warning:hover{background:#d97706;color:#fff}
.btn-outline{background:transparent;border:1px solid var(--gray-300);color:var(--gray-700)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-sm{padding:6px 14px;font-size:12px}
.btn-lg{padding:12px 28px;font-size:16px}
.btn-block{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:13px;font-weight:500;color:var(--gray-700);margin-bottom:6px}
.form-control{width:100%;padding:10px 14px;font-size:14px;border:1.5px solid var(--gray-200);border-radius:var(--radius-sm);transition:var(--transition);background:#fff;color:var(--gray-800);outline:none}
.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.1)}
.form-control::placeholder{color:var(--gray-400)}
.form-control-sm{padding:8px 12px;font-size:13px}
.form-select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px}
textarea.form-control{resize:vertical;min-height:100px}
.form-text{font-size:12px;color:var(--gray-500);margin-top:4px}
.form-check{display:flex;align-items:center;gap:8px}
.form-check input[type="checkbox"],.form-check input[type="radio"]{width:16px;height:16px;cursor:pointer}
.alert{padding:14px 18px;border-radius:var(--radius-sm);font-size:14px;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.alert-success{background:#ecfdf5;color:#065f46;border:1px solid #a7f3d0}
.alert-danger{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}
.alert-warning{background:#fffbeb;color:#92400e;border:1px solid #fde68a}
.alert-info{background:#eff6ff;color:#1e40af;border:1px solid #bfdbfe}
.badge{display:inline-block;padding:3px 10px;border-radius:50px;font-size:12px;font-weight:500}
.badge-success{background:#ecfdf5;color:#065f46}
.badge-danger{background:#fef2f2;color:#991b1b}
.badge-warning{background:#fffbeb;color:#92400e}
.badge-info{background:#eff6ff;color:#1e40af}
.badge-primary{background:var(--primary-bg);color:var(--primary)}
.empty-state{text-align:center;padding:60px 20px}
.empty-state .empty-icon{font-size:48px;color:var(--gray-300);margin-bottom:16px}
.empty-state h3{font-size:18px;color:var(--gray-600);margin-bottom:8px}
.empty-state p{color:var(--gray-400);font-size:14px}
.pagination{display:flex;align-items:center;gap:4px;margin-top:20px;justify-content:center;flex-wrap:wrap}
.page-btn{display:inline-flex;align-items:center;justify-content:center;min-width:34px;height:34px;padding:0 8px;font-size:13px;border:1px solid var(--gray-200);border-radius:6px;color:var(--gray-600);background:#fff;transition:var(--transition);cursor:pointer;text-decoration:none}
.page-btn:hover{border-color:var(--primary);color:var(--primary)}
.page-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.page-ellipsis{border:none;background:none;cursor:default;min-width:24px;color:var(--gray-400)}
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);display:none;align-items:center;justify-content:center;z-index:1000;padding:20px;overflow:hidden}
.modal-overlay.open{display:flex}
.modal{background:#fff;border-radius:var(--radius);width:100%;max-width:700px;max-height:90vh;box-shadow:var(--shadow-lg);animation:modalIn .25s ease;cursor:default;position:relative;display:flex;flex-direction:column;overflow:hidden}
.modal>form{display:flex;flex-direction:column;flex:1;min-height:0}
.modal.dragging{transition:none;animation:none;user-select:none}
@keyframes modalIn{from{opacity:0;transform:scale(.95) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}
.modal-header{padding:16px 20px;border-bottom:1px solid var(--gray-100);display:flex;align-items:center;justify-content:space-between;cursor:move;flex-shrink:0}
.modal-header h3{font-size:16px;font-weight:600}
.modal-close{background:none;border:none;font-size:24px;cursor:pointer;color:var(--gray-400);padding:4px;line-height:1}
.modal-close:hover{color:var(--gray-600)}
.modal-body{padding:20px;overflow-y:auto;flex:1;min-height:0}
.modal-footer{padding:14px 20px;border-top:1px solid var(--gray-100);display:flex;justify-content:flex-end;gap:10px;flex-shrink:0;background:#fff;border-radius:0 0 var(--radius) var(--radius)}
.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);padding:20px}
.auth-card{background:#fff;border-radius:var(--radius);padding:40px;width:100%;max-width:420px;box-shadow:0 20px 60px rgba(0,0,0,.15)}
.auth-card .auth-logo{text-align:center;margin-bottom:32px}
.auth-card .auth-logo h1{font-size:24px;font-weight:700;color:var(--gray-900)}
.auth-card .auth-logo p{color:var(--gray-500);font-size:14px;margin-top:4px}
.auth-card .auth-title{text-align:center;margin-bottom:24px}
.auth-card .auth-title h2{font-size:20px;font-weight:600}
.auth-card .auth-title p{color:var(--gray-500);font-size:14px}
.auth-divider{text-align:center;margin:20px 0;position:relative}
.auth-divider::before{content:'';position:absolute;top:50%;left:0;right:0;height:1px;background:var(--gray-200)}
.auth-divider span{background:#fff;padding:0 12px;color:var(--gray-400);font-size:13px;position:relative}
.copy-btn{cursor:pointer;padding:4px 10px;border:1px solid var(--gray-200);border-radius:4px;font-size:12px;background:#fff;transition:var(--transition)}
.copy-btn:hover{border-color:var(--primary);color:var(--primary)}
.copy-btn.copied{border-color:var(--success);color:var(--success);background:#ecfdf5}
.key-display{background:var(--gray-50);border:1px solid var(--gray-200);border-radius:var(--radius-sm);padding:12px 16px;font-family:'SF Mono',Monaco,'Cascadia Code',monospace;font-size:13px;word-break:break-all;display:flex;align-items:center;justify-content:space-between;gap:12px}
@media(max-width:1024px){
  .admin-stats-grid{grid-template-columns:repeat(3,1fr)}
  .modal-overlay{padding:15px 10px}
  .modal{max-height:calc(100vh - 30px)}
  .modal-body{padding:18px}
  .header-actions .user-name{display:none}
}
@media(max-width:768px){
  .app-layout{display:block;width:100%}
  .sidebar{transform:translateX(-100%);z-index:101}
  .sidebar.open{transform:translateX(0)}
  .sidebar-backdrop{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:100}
  .sidebar.open ~ .sidebar-backdrop{display:block}
  .main-content{display:block;width:100%;margin-left:0}
  .main-body{padding:20px 16px}
  .main-header{padding:0 16px}
  .main-header h2{font-size:16px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .auth-card{padding:28px 24px}
  .mobile-toggle{display:block!important}
  .modal-overlay{padding:10px 8px;align-items:flex-start}
  .modal{max-height:calc(100vh - 20px);max-width:100%!important;width:calc(100% - 16px)!important;overflow-x:hidden}
  .modal-body{padding:14px}
  .modal-body [style*="grid-template-columns"],.modal-body [style*="display:grid"]{grid-template-columns:1fr!important;gap:12px!important}
  .modal-body textarea.form-control{min-height:80px}
  .form-group{margin-bottom:14px}
  .form-control{padding:10px 12px;font-size:14px}
  textarea.form-control{min-height:80px}
  .modal-footer{flex-wrap:wrap;gap:8px}
  .modal-footer .btn{flex:1;text-align:center}
  table{font-size:13px;width:100%}
  table th,table td{padding:10px 12px}
  .table-container{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .header-actions{gap:8px}
  .header-actions > span{font-size:13px!important}
  .header-actions .btn-warning{padding:6px 12px!important;font-size:12px!important}
  .card-body{padding:16px}
  .card-header{padding:14px 16px}
  .card-header h3{font-size:15px}
  .card{width:100%}
  .key-display{flex-wrap:wrap;gap:8px}
  .key-display code{width:100%}
  .stats-grid{gap:12px}
  .stat-card{padding:16px}
  .stat-card .stat-value{font-size:20px}
  .user-stat-card{display:flex;justify-content:space-between;align-items:center;padding:16px;flex-wrap:nowrap;gap:12px}
  .user-stat-card .stat-content{flex:1;min-width:0}
  .user-stat-card .stat-icon-box{width:44px;height:44px;font-size:18px;margin-left:12px}
  .toast-container{right:12px;left:12px;top:12px}
  .toast{font-size:13px;padding:12px 16px}
}
@media(max-width:640px){
  .stats-grid{grid-template-columns:1fr 1fr;gap:10px}
  .admin-stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat-card{padding:14px}
  .stat-card .stat-value{font-size:18px}
  .user-stat-card{display:flex;justify-content:space-between;align-items:center;padding:14px;flex-wrap:nowrap;gap:10px}
  .user-stat-card .stat-content{flex:1;min-width:0}
  .user-stat-card .stat-label{font-size:13px;margin-bottom:6px}
  .user-stat-card .stat-icon-box{width:40px;height:40px;font-size:16px;margin-left:10px}
  .table-container{width:100%;overflow-x:hidden}
  .table-container table{display:block;width:100%}
  .table-container table thead{display:none}
  .table-container table tbody tr{display:block;padding:12px;border-bottom:1px solid var(--gray-200)}
  .table-container table tbody tr:hover{background:transparent}
  .table-container table td{display:grid;grid-template-columns:72px 1fr;align-items:center;padding:5px 0;border:none;font-size:13px;gap:8px}
  .table-container table td:before{content:attr(data-label);font-weight:600;color:var(--gray-500);font-size:12px;white-space:nowrap;justify-self:start}
  .table-container table td>*{justify-self:start;width:100%}
  .table-container table td .badge{justify-self:start;margin-left:0}
  .table-container table td form{justify-self:start;justify-content:flex-start}
  .table-container table td form button{flex:0 0 auto}
  .table-container table td:last-child{border:none}
  .table-container table td .badge{margin-left:auto}
  .table-container table .empty-row td{display:block!important;text-align:center!important;padding:40px!important;border:none!important;grid-template-columns:1fr!important}
  .table-container table .empty-row td:before{display:none!important}
  .table-container table td[colspan]{display:block!important;text-align:center!important;padding:40px!important;border:none!important;grid-template-columns:1fr!important}
  .table-container table td[colspan]:before{display:none!important}
  .table-container table td form{flex:1;display:flex}
  .table-container table td form button{flex:1}
  .card-header{flex-wrap:wrap;gap:8px}
  .card-header form{width:100%}
  .card-header select{width:100%!important}
  .key-item{flex-wrap:wrap}
  .key-item .key-label{min-width:100%;font-size:13px;padding:8px 12px}
  .key-item .key-value{width:100%;font-size:13px;padding:10px 12px}
  .key-item .copy-btn,.key-item form{width:100%}
  .key-item .copy-btn{text-align:center}
  .key-item form .reset-btn{width:100%;text-align:center}
  .main-body{padding:16px 12px}
  .pagination{gap:2px}
  .page-btn{min-width:30px;height:30px;font-size:12px}
  .auth-page{padding:16px}
  .auth-card{padding:24px 20px}
  .form-control{padding:10px 12px;font-size:14px}
  .add-ip-row{flex-direction:column}
  .add-ip-row .add-ip-input{min-width:100%!important;flex:none!important;width:100%}
  .add-ip-row .add-btn{width:100%}
  .whitelist-table{display:block;width:100%}
  .whitelist-table thead{display:none}
  .whitelist-table tbody tr{display:block;padding:12px;border-bottom:1px solid var(--gray-200)}
  .whitelist-table td{display:grid;grid-template-columns:72px 1fr;align-items:center;padding:5px 0;border:none;font-size:13px;gap:8px}
  .whitelist-table td:before{content:attr(data-label);font-weight:600;color:var(--gray-500);font-size:12px;white-space:nowrap;justify-self:start}
  .whitelist-table td:last-child{border:none}
  .whitelist-table .empty-row{display:block!important;text-align:center!important;padding:20px!important}
  .whitelist-table .empty-row:before{display:none}
  .keys-section{margin-left:-12px;margin-right:-12px;border-radius:0;box-shadow:none;border-top:1px solid var(--gray-100);border-bottom:1px solid var(--gray-100)}
  .keys-content{padding:16px}
  .keys-header{padding:14px 16px;font-size:16px}
  .warning-box{padding:12px;margin-top:16px}
  .warning-box p{font-size:13px}
  .whitelist-textarea{min-height:100px;padding:12px;font-size:13px}
  .save-btn{width:100%;text-align:center}
  .alert{padding:12px 14px;font-size:13px}
  .btn{padding:10px 20px}
  .btn-sm{padding:8px 14px}
  .card-body [style*="grid-template-columns"]{grid-template-columns:1fr!important}
  .stats-grid + .card{margin-top:16px!important}
  .form-group{margin-bottom:14px}
  .empty-state{padding:40px 16px}
  .empty-state .empty-icon{font-size:36px}
  .empty-state h3{font-size:16px}
  .modal-body{padding:12px}
  .modal-header{padding:14px 16px}
  .modal-footer{padding:12px 16px;flex-wrap:wrap}
  .modal-footer .btn{flex:1;text-align:center}
  .keys-section + .keys-section{margin-top:-8px}
  .whitelist-notice{padding:10px 14px;font-size:13px}
}
@media(max-width:480px){
  .stats-grid{grid-template-columns:1fr;gap:8px}
  .admin-stats-grid{grid-template-columns:1fr 1fr}
  .stat-card{padding:14px}
  .stat-card .stat-value{font-size:17px}
  .user-stat-card{display:flex;justify-content:space-between;align-items:center;padding:12px;flex-wrap:nowrap;gap:8px}
  .user-stat-card .stat-content{flex:1;min-width:0}
  .user-stat-card .stat-label{font-size:12px;margin-bottom:4px}
  .user-stat-card .stat-icon-box{width:36px;height:36px;font-size:14px;margin-left:8px}
  .main-body{padding:12px 10px}
  .main-header{padding:0 12px}
  .main-header h2{font-size:15px}
  .header-actions > span{font-size:12px!important}
  .card-header{padding:12px}
  .card-body{padding:12px}
  .card-header h3{font-size:14px}
  table th,table td{padding:8px 10px;font-size:12px}
  .auth-card{padding:20px 16px}
  .auth-card .auth-logo h1{font-size:20px}
  .pagination{gap:2px}
  .page-btn{min-width:28px;height:28px;font-size:11px}
  .toast-container{right:8px;left:8px;top:8px}
  .toast{padding:10px 14px;font-size:12px}
}
.mobile-toggle{display:none;background:none;border:none;font-size:24px;color:var(--gray-700);cursor:pointer}
.toast-container{position:fixed;top:20px;right:20px;z-index:9999}
.toast{padding:14px 20px;border-radius:var(--radius-sm);color:#fff;margin-bottom:8px;font-size:14px;animation:slideIn .3s ease;box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:8px}
.toast-success{background:var(--success)}
.toast-error{background:var(--danger)}
.toast-warning{background:var(--warning)}
.toast-info{background:var(--info)}
@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}
.loading{display:inline-block;width:20px;height:20px;border:2px solid var(--gray-200);border-top-color:var(--primary);border-radius:50%;animation:spin .6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--gray-300);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--gray-400)}