:root{--primary:#2563eb;--primary-dark:#1d4ed8;--bg:#0f172a;--surface:#1e293b;--surface2:#334155;--text:#f1f5f9;--text2:#94a3b8;--border:#475569;--success:#22c55e;--warning:#f59e0b;--danger:#ef4444;--radius:12px;--shadow:0 4px 24px rgba(0,0,0,.3)}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Inter','Segoe UI',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;overflow-x:hidden}
.login-container{display:flex;justify-content:center;align-items:center;min-height:100vh;padding:20px}
.login-card{background:var(--surface);border-radius:var(--radius);padding:40px;width:100%;max-width:420px;box-shadow:var(--shadow);border:1px solid var(--border)}
.login-card h1{font-size:28px;margin-bottom:8px;color:var(--primary)}
.login-card p{color:var(--text2);margin-bottom:32px;font-size:14px}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:13px;color:var(--text2);margin-bottom:6px;font-weight:500}
.form-group input{width:100%;padding:12px 16px;background:var(--bg);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:15px;transition:border .2s}
.form-group input:focus{outline:none;border-color:var(--primary)}
.btn{padding:12px 24px;border:none;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s;display:inline-flex;align-items:center;gap:8px}
.btn-primary{background:var(--primary);color:#fff;width:100%}
.btn-primary:hover{background:var(--primary-dark)}
.btn-sm{padding:8px 16px;font-size:13px}
.btn-danger{background:var(--danger);color:#fff}
.btn-success{background:var(--success);color:#fff}
.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}
.app-layout{display:grid;grid-template-columns:260px 1fr;min-height:100vh}
.sidebar{background:var(--surface);border-right:1px solid var(--border);padding:24px 0;display:flex;flex-direction:column}
.sidebar-brand{padding:0 24px 24px;border-bottom:1px solid var(--border)}
.sidebar-brand h2{font-size:20px;color:var(--primary)}
.sidebar-brand span{font-size:11px;color:var(--text2);text-transform:uppercase;letter-spacing:1px}
.sidebar-nav{flex:1;padding:16px 0}
.nav-item{display:flex;align-items:center;gap:12px;padding:10px 24px;color:var(--text2);text-decoration:none;font-size:14px;transition:all .15s;cursor:pointer;border-left:3px solid transparent}
.nav-item:hover,.nav-item.active{background:rgba(37,99,235,.1);color:var(--text);border-left-color:var(--primary)}
.nav-item.active{font-weight:600}
.main-content{padding:32px;overflow-y:auto;max-height:100vh}
.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px}
.header h1{font-size:24px;font-weight:700}
.header-actions{display:flex;gap:12px;align-items:center}
.status-badge{padding:4px 12px;border-radius:20px;font-size:12px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.status-online{background:rgba(34,197,94,.15);color:var(--success)}
.status-offline{background:rgba(239,68,68,.15);color:var(--danger)}
.status-syncing{background:rgba(245,158,11,.15);color:var(--warning)}
.cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:32px}
.stat-card{background:var(--surface);border-radius:var(--radius);padding:20px;border:1px solid var(--border)}
.stat-card .label{font-size:12px;color:var(--text2);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px}
.stat-card .value{font-size:28px;font-weight:700}
.stat-card .change{font-size:12px;margin-top:4px}
.stat-card .change.up{color:var(--success)}
.stat-card .change.down{color:var(--danger)}
.table-container{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);overflow:hidden}
.table-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--border)}
.table-header h3{font-size:16px;font-weight:600}
table{width:100%;border-collapse:collapse}
th{text-align:left;padding:12px 20px;font-size:12px;color:var(--text2);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border);background:var(--bg)}
td{padding:14px 20px;font-size:14px;border-bottom:1px solid rgba(71,85,105,.3)}
tr:hover{background:rgba(37,99,235,.05)}
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);display:flex;justify-content:center;align-items:center;z-index:1000;backdrop-filter:blur(4px)}
.modal{background:var(--surface);border-radius:var(--radius);padding:32px;width:90%;max-width:560px;max-height:90vh;overflow-y:auto;border:1px solid var(--border)}
.modal h2{font-size:20px;margin-bottom:24px}
.modal-actions{display:flex;gap:12px;justify-content:flex-end;margin-top:24px}
.search-bar{position:relative;margin-bottom:24px}
.search-bar input{width:100%;padding:12px 16px 12px 44px;background:var(--surface);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:14px}
.search-bar svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text2)}
.empty-state{text-align:center;padding:60px 20px;color:var(--text2)}
.empty-state svg{margin-bottom:16px;opacity:.5}
.empty-state h3{font-size:18px;margin-bottom:8px;color:var(--text)}
.empty-state p{font-size:14px}
.toast{position:fixed;bottom:24px;right:24px;padding:12px 20px;border-radius:8px;font-size:14px;font-weight:500;z-index:2000;animation:slideIn .3s ease}
.toast-success{background:var(--success);color:#fff}
.toast-error{background:var(--danger);color:#fff}
.toast-info{background:var(--primary);color:#fff}
@keyframes slideIn{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}
@keyframes fadeOut{from{opacity:1}to{opacity:0}}
.tag{display:inline-block;padding:2px 8px;border-radius:4px;font-size:11px;font-weight:600;text-transform:uppercase}
.tag-active{background:rgba(34,197,94,.15);color:var(--success)}
.tag-pending{background:rgba(245,158,11,.15);color:var(--warning)}
.tag-expired{background:rgba(239,68,68,.15);color:var(--danger)}
.tag-basic{background:rgba(99,102,241,.15);color:#818cf8}
.tag-pro{background:rgba(37,99,235,.15);color:var(--primary)}
.tag-premium{background:rgba(168,85,247,.15);color:#a855f7}
.quick-actions{display:flex;gap:12px;margin-bottom:32px;flex-wrap:wrap}
.quick-action{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;cursor:pointer;transition:all .15s;display:flex;align-items:center;gap:12px;font-size:14px;color:var(--text)}
.quick-action:hover{border-color:var(--primary);background:rgba(37,99,235,.05)}
.sync-indicator{position:fixed;top:16px;right:16px;z-index:100;display:flex;align-items:center;gap:8px;padding:8px 16px;border-radius:20px;background:var(--surface);border:1px solid var(--border);font-size:12px}
.sync-dot{width:8px;height:8px;border-radius:50%}
.sync-dot.online{background:var(--success)}
.sync-dot.offline{background:var(--danger)}
.sync-dot.syncing{background:var(--warning);animation:pulse 1s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.tabs{display:flex;gap:4px;margin-bottom:24px;border-bottom:1px solid var(--border);padding-bottom:0}
.tab{padding:10px 20px;font-size:14px;color:var(--text2);cursor:pointer;border-bottom:2px solid transparent;transition:all .15s}
.tab.active{color:var(--text);border-bottom-color:var(--primary);font-weight:600}
.detail-grid{display:grid;grid-template-columns:140px 1fr;gap:8px 16px;font-size:14px;padding:16px 0}
.detail-grid dt{color:var(--text2);font-weight:500}
.detail-grid dd{color:var(--text)}
.fab{position:fixed;bottom:24px;right:24px;width:56px;height:56px;border-radius:50%;background:var(--primary);color:#fff;border:none;font-size:24px;cursor:pointer;box-shadow:0 4px 16px rgba(37,99,235,.4);z-index:100;display:flex;align-items:center;justify-content:center;transition:transform .15s}
.fab:hover{transform:scale(1.1)}
@media(max-width:768px){
  .app-layout{grid-template-columns:1fr}
  .sidebar{display:none}
  .sidebar.mobile-open{display:flex;position:fixed;inset:0;z-index:999;width:280px}
  .main-content{padding:16px}
  .cards-grid{grid-template-columns:1fr 1fr}
  .modal{width:95%;padding:24px}
  table{font-size:13px}
  th,td{padding:10px 12px}
}