:root{--primary: #6366f1;--primary-dark: #4f46e5;--primary-light: #a5b4fc;--success: #10b981;--warning: #f59e0b;--danger: #ef4444;--info: #3b82f6;--bg: #f1f5f9;--bg-card: #ffffff;--text: #1e293b;--text-muted: #64748b;--border: #e2e8f0;--sidebar-bg: #1e293b;--sidebar-text: #cbd5e1;--sidebar-active: #6366f1;--radius: 8px;--shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);--shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px rgba(0,0,0,.05)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}.app-layout{display:flex;min-height:100vh}.sidebar{width:260px;background:var(--sidebar-bg);color:var(--sidebar-text);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100;transition:transform .3s}.sidebar-header{padding:20px;border-bottom:1px solid rgba(255,255,255,.1)}.sidebar-header h1{font-size:1.25rem;color:#fff;font-weight:700}.sidebar-header span{font-size:.75rem;color:var(--primary-light);font-weight:500}.sidebar-nav{flex:1;padding:12px 0;overflow-y:auto}.nav-section{padding:8px 20px 4px;font-size:.65rem;text-transform:uppercase;letter-spacing:1px;color:#ffffff59;font-weight:600}.nav-link{display:flex;align-items:center;gap:12px;padding:10px 20px;color:var(--sidebar-text);text-decoration:none;font-size:.875rem;font-weight:500;transition:all .15s;border-left:3px solid transparent}.nav-link:hover{background:#ffffff0d;color:#fff}.nav-link.active{background:#6366f126;color:var(--primary-light);border-left-color:var(--primary)}.nav-link svg{font-size:1.1rem;min-width:20px}.sidebar-footer{padding:16px 20px;border-top:1px solid rgba(255,255,255,.1)}.user-info{display:flex;align-items:center;gap:10px}.user-avatar{width:36px;height:36px;border-radius:50%;background:var(--primary);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.875rem}.user-details .user-name{font-size:.85rem;color:#fff;font-weight:600}.user-details .user-role{font-size:.7rem;color:var(--text-muted)}.btn-logout{background:none;border:none;color:var(--text-muted);cursor:pointer;margin-left:auto;font-size:1.1rem;padding:4px}.btn-logout:hover{color:var(--danger)}.main-content{flex:1;margin-left:260px;padding:0;min-height:100vh;display:flex;flex-direction:column;transition:margin-left .3s ease}.sidebar-collapsed .main-content{margin-left:0}.sidebar-collapsed .sidebar{transform:translate(-100%)}.navbar{display:flex;align-items:center;justify-content:space-between;height:57px;padding:0 16px;background:#fff;border-bottom:1px solid #dee2e6;position:sticky;top:0;z-index:50;box-shadow:0 2px 4px #0000000a}.navbar-left,.navbar-right{display:flex;align-items:center;gap:4px}.navbar-icon-btn{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border:none;background:transparent;color:#495057;cursor:pointer;border-radius:4px;font-size:1.15rem;transition:background .15s,color .15s}.navbar-icon-btn:hover{background:#f4f6f9;color:var(--primary)}.navbar-user-wrapper{position:relative;margin-left:4px}.navbar-user-btn{display:flex;align-items:center;gap:10px;padding:6px 12px 6px 6px;border:1px solid transparent;background:transparent;cursor:pointer;border-radius:6px;transition:all .15s;color:#495057}.navbar-user-btn:hover{background:#f4f6f9;border-color:#e9ecef}.navbar-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--primary),#818cf8);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.8rem;flex-shrink:0}.navbar-user-name{font-size:.875rem;font-weight:500;max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.navbar-dropdown{position:absolute;top:calc(100% + 8px);right:0;width:280px;background:#fff;border:1px solid #dee2e6;border-radius:8px;box-shadow:0 6px 24px #0000001f;z-index:200;overflow:hidden;animation:dropdownFade .15s ease}@keyframes dropdownFade{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.navbar-dropdown-header{display:flex;align-items:center;gap:12px;padding:16px;background:#f8f9fa}.navbar-dropdown-divider{height:1px;background:#e9ecef}.navbar-dropdown-item{display:flex;align-items:center;gap:10px;width:100%;padding:10px 16px;border:none;background:none;color:#495057;font-size:.85rem;cursor:pointer;transition:all .15s;text-align:left}.navbar-dropdown-item:hover{background:#f4f6f9;color:var(--primary)}.navbar-dropdown-item.danger:hover{background:#fef2f2;color:#dc2626}.content-wrapper{padding:24px;flex:1}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.page-header h2{font-size:1.5rem;font-weight:700}.page-header p{color:var(--text-muted);font-size:.875rem}.card{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border)}.card-header{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.card-header h3{font-size:1rem;font-weight:600}.card-body{padding:20px}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-bottom:24px}.stat-card{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border);padding:20px;display:flex;align-items:flex-start;gap:16px}.stat-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.3rem}.stat-icon.primary{background:#6366f11a;color:var(--primary)}.stat-icon.success{background:#10b9811a;color:var(--success)}.stat-icon.warning{background:#f59e0b1a;color:var(--warning)}.stat-icon.danger{background:#ef44441a;color:var(--danger)}.stat-icon.info{background:#3b82f61a;color:var(--info)}.stat-content h4{font-size:.8rem;color:var(--text-muted);font-weight:500}.stat-content .stat-value{font-size:1.5rem;font-weight:700;margin-top:4px}.stat-content .stat-sub{font-size:.75rem;color:var(--text-muted);margin-top:2px}.table-container{overflow-x:auto}table{width:100%;border-collapse:collapse}thead th{text-align:left;padding:12px 16px;font-size:.75rem;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);font-weight:600;border-bottom:2px solid var(--border);white-space:nowrap}tbody td{padding:12px 16px;font-size:.875rem;border-bottom:1px solid var(--border);vertical-align:middle}tbody tr:hover{background:#6366f105}.badge{display:inline-flex;align-items:center;padding:2px 10px;border-radius:20px;font-size:.75rem;font-weight:600}.badge.success{background:#10b9811a;color:#059669}.badge.danger{background:#ef44441a;color:#dc2626}.badge.warning{background:#f59e0b1a;color:#d97706}.badge.info{background:#3b82f61a;color:#2563eb}.badge.primary{background:#6366f11a;color:#4f46e5}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius);border:none;cursor:pointer;font-size:.875rem;font-weight:500;transition:all .15s;text-decoration:none}.btn-sm{padding:5px 10px;font-size:.8rem}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-success{background:var(--success);color:#fff}.btn-success:hover{background:#059669}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:#dc2626}.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}.btn-outline:hover{background:var(--bg)}.btn-icon{width:32px;height:32px;padding:0;display:inline-flex;align-items:center;justify-content:center;border-radius:6px;border:none;cursor:pointer;background:transparent;color:var(--text-muted);transition:all .15s}.btn-icon:hover{background:var(--bg);color:var(--text)}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:.8rem;font-weight:600;margin-bottom:6px;color:var(--text)}.form-control{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:var(--radius);font-size:.875rem;font-family:inherit;transition:border-color .15s;background:#fff}.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #6366f11a}select.form-control{cursor:pointer}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px}.modal{background:#fff;border-radius:12px;box-shadow:var(--shadow-lg);width:100%;max-width:520px;max-height:90vh;overflow-y:auto}.modal-header{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.modal-header h3{font-size:1.1rem;font-weight:600}.modal-body{padding:20px}.modal-footer{padding:12px 20px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:8px}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1e293b,#334155)}.login-card{background:#fff;border-radius:16px;padding:40px;width:100%;max-width:420px;box-shadow:var(--shadow-lg)}.login-card h1{text-align:center;font-size:1.5rem;margin-bottom:4px}.login-card .subtitle{text-align:center;color:var(--text-muted);font-size:.875rem;margin-bottom:32px}.login-card .btn-primary{width:100%;padding:11px;font-size:1rem;justify-content:center}.login-error{background:#ef44441a;border:1px solid rgba(239,68,68,.2);color:var(--danger);padding:10px 14px;border-radius:var(--radius);font-size:.85rem;margin-bottom:16px}.filters-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px}.filters-bar .form-control{width:auto;min-width:160px}.search-input{position:relative}.search-input input{padding-left:36px}.search-input svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--text-muted)}.device-status{display:flex;align-items:center;gap:6px}.status-dot{width:8px;height:8px;border-radius:50%}.status-dot.online{background:var(--success);box-shadow:0 0 6px #10b98180}.status-dot.offline{background:var(--danger)}@media(max-width:768px){.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.main-content{margin-left:0}.sidebar-collapsed .sidebar{transform:translate(-100%)}.stats-grid,.form-row{grid-template-columns:1fr}.navbar-user-name{display:none}.navbar-dropdown{width:260px;right:-8px}.content-wrapper{padding:16px}}.empty-state{text-align:center;padding:40px 20px;color:var(--text-muted)}.empty-state svg{font-size:2.5rem;margin-bottom:12px;opacity:.5}.empty-state h4{font-size:1rem;margin-bottom:4px;color:var(--text)}.empty-state p{font-size:.85rem}.loading{display:flex;align-items:center;justify-content:center;padding:40px}.spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.amount{font-family:JetBrains Mono,monospace;font-weight:600}.text-success{color:var(--success)}.text-danger{color:var(--danger)}.text-warning{color:var(--warning)}.text-muted{color:var(--text-muted)}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mb-2{margin-bottom:16px}.gap-2{gap:16px}.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}