*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--primary:#cc1020;--primary-dk:#a80d18;--primary-lt:#fff0f1;--navy:#1a1e2c;--surface:#fff;--bg:#f5f6fa;--border:#e5e7eb;--text:#111827;--text-muted:#6b7280;--text-faint:#9ca3af;--success:#059669;--success-bg:#ecfdf5;--warn:#d97706;--warn-bg:#fffbeb;--danger:#dc2626;--danger-bg:#fef2f2;--radius:10px;--radius-lg:14px;--sidebar-w:220px}body{color:var(--text);background:var(--bg);font-family:Inter,-apple-system,sans-serif;font-size:14px;line-height:1.5}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit}.layout{min-height:100vh;display:flex}.sidebar{width:var(--sidebar-w);background:var(--navy);flex-direction:column;flex-shrink:0;height:100vh;display:flex;position:sticky;top:0}.sidebar-brand{border-bottom:1px solid #ffffff14;align-items:center;gap:10px;padding:20px 16px;display:flex}.brand-icon{background:var(--primary);color:#fff;border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:18px;display:flex}.brand-name{color:#fff;letter-spacing:1px;font-size:14px;font-weight:700}.brand-sub{color:#fff6;letter-spacing:.5px;text-transform:uppercase;font-size:10px}.sidebar-nav{flex-direction:column;flex:1;gap:2px;padding:12px 8px;display:flex}.nav-link{color:#ffffffa6;border-radius:8px;align-items:center;gap:8px;padding:9px 12px;font-size:13px;font-weight:500;transition:background .15s,color .15s;display:flex}.nav-link i{font-size:17px}.nav-link:hover{color:#fff;background:#ffffff14}.nav-link.active{background:var(--primary);color:#fff}.sidebar-footer{border-top:1px solid #ffffff14;padding:12px 16px}.sidebar-user{align-items:center;gap:8px;display:flex}.user-info{flex:1;overflow:hidden}.user-name{color:#fff;white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:600;overflow:hidden}.user-email{color:#fff6;white-space:nowrap;text-overflow:ellipsis;font-size:11px;overflow:hidden}.btn-logout{color:#fff9;background:#ffffff14;border:none;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:16px;transition:background .15s,color .15s;display:flex}.btn-logout:hover{background:var(--danger);color:#fff}.main{flex-direction:column;flex:1;min-width:0;display:flex}.topbar{padding:24px 28px 0}.page-title{color:var(--text);font-size:20px;font-weight:700}.page-subtitle{color:var(--text-muted);margin-top:2px;font-size:13px}.content{padding:20px 28px 40px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg)}.stats-grid{grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:16px;display:grid}@media (width<=640px){.stats-grid{grid-template-columns:repeat(2,1fr)}}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);text-align:center;padding:18px 20px}.stat-value{color:var(--text);font-size:30px;font-weight:700;line-height:1}.stat-label{color:var(--text-faint);text-transform:uppercase;letter-spacing:.5px;margin-top:4px;font-size:11px}.stat-activated .stat-value{color:var(--success)}.stat-unused .stat-value{color:var(--primary)}.stat-inactive .stat-value{color:var(--text-faint)}.generate-card{margin-bottom:16px;padding:18px 20px}.generate-title{color:var(--text);align-items:center;gap:6px;margin-bottom:14px;font-size:14px;font-weight:600;display:flex}.generate-title i{color:var(--primary);font-size:18px}.generate-row{flex-wrap:wrap;align-items:flex-end;gap:12px;display:flex}.form-field{flex-direction:column;gap:4px;display:flex}.form-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.4px;font-size:11px;font-weight:600}.form-input{border:1px solid var(--border);background:var(--surface);height:36px;color:var(--text);border-radius:8px;outline:none;padding:0 12px;font-family:inherit;font-size:13px;transition:border-color .15s,box-shadow .15s}.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-lt)}.btn{cursor:pointer;white-space:nowrap;border:1px solid #0000;border-radius:8px;align-items:center;gap:6px;height:36px;padding:0 14px;font-family:inherit;font-size:13px;font-weight:500;transition:background .15s,border-color .15s;display:inline-flex}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dk)}.btn-secondary{background:var(--surface);border-color:var(--border);color:var(--text-muted)}.btn-secondary:hover{background:var(--bg)}.btn-icon{border:none;border-radius:6px;justify-content:center;align-items:center;width:28px;height:28px;font-size:14px;transition:background .15s;display:flex}.btn-icon-warn{background:var(--warn-bg);color:var(--warn)}.btn-icon-warn:hover{background:#fde68a}.btn-icon-danger{background:var(--danger-bg);color:var(--danger)}.btn-icon-danger:hover{background:#fecaca}.btn-icon-success{background:var(--success-bg);color:var(--success)}.btn-icon-success:hover{background:#a7f3d0}.alert-success{background:var(--success-bg);color:#065f46;border-radius:var(--radius);border:1px solid #6ee7b7;margin-bottom:16px;padding:11px 16px;font-size:13px}.alert-danger{background:var(--danger-bg);color:#991b1b;border-radius:var(--radius);border:1px solid #fca5a5;margin-bottom:16px;padding:11px 16px;font-size:13px}.filter-row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.filter-search{border:1px solid var(--border);background:var(--surface);min-width:200px;height:36px;color:var(--text);border-radius:8px;outline:none;flex:1;padding:0 12px;font-family:inherit;font-size:13px}.filter-search:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-lt)}.filter-select{border:1px solid var(--border);background:var(--surface);height:36px;color:var(--text);cursor:pointer;border-radius:8px;outline:none;padding:0 10px;font-family:inherit;font-size:13px}.table{border-collapse:collapse;width:100%}.table th{color:var(--text-faint);text-transform:uppercase;letter-spacing:.4px;text-align:left;border-bottom:1px solid var(--border);white-space:nowrap;background:#fafbfc;padding:10px 14px;font-size:11px;font-weight:600}.table td{vertical-align:middle;border-bottom:1px solid #f3f4f6;padding:10px 14px;font-size:13px}.table tbody tr:last-child td{border-bottom:none}.table tbody tr:hover td{background:#fafbfc}.table-empty{text-align:center;color:var(--text-faint);padding:48px 0;font-size:13px}.text-sm{font-size:12px}.text-muted{color:var(--text-muted)}.text-faint{color:var(--text-faint)}.serial-code{letter-spacing:1.5px;color:var(--text);background:var(--bg);border:1px solid var(--border);-webkit-user-select:all;user-select:all;border-radius:6px;padding:3px 8px;font-family:Courier New,monospace;font-size:12px;font-weight:700}.device-id{text-overflow:ellipsis;white-space:nowrap;max-width:160px;color:var(--text-muted);border-bottom:1px dashed var(--border);vertical-align:middle;cursor:default;font-family:Courier New,monospace;font-size:11px;display:inline-block;overflow:hidden}.badge{white-space:nowrap;border-radius:20px;align-items:center;padding:3px 9px;font-size:11px;font-weight:600;display:inline-flex}.badge-active{background:var(--success-bg);color:var(--success)}.badge-unused{background:var(--primary-lt);color:var(--primary)}.badge-inactive{color:var(--text-faint);background:#f3f4f6}.row-actions{align-items:center;gap:4px;display:flex}.pagination-wrap{border-top:1px solid var(--border);padding:12px 16px}.login-body{background:var(--navy);justify-content:center;align-items:center;min-height:100vh;display:flex}.login-wrap{flex-direction:column;align-items:center;gap:20px;width:100%;max-width:400px;padding:24px;display:flex}.login-card{background:var(--surface);border-radius:20px;width:100%;padding:36px 32px;box-shadow:0 20px 60px #0000004d}.login-logo{text-align:center;margin-bottom:32px}.login-logo-icon{background:var(--primary);color:#fff;border-radius:16px;justify-content:center;align-items:center;width:56px;height:56px;margin:0 auto 12px;font-size:26px;display:flex}.login-logo-text{color:var(--text);letter-spacing:2px;font-size:22px;font-weight:800}.login-logo-sub{color:var(--text-faint);letter-spacing:1px;text-transform:uppercase;margin-top:2px;font-size:12px}.login-form{flex-direction:column;gap:16px;display:flex}.field{flex-direction:column;gap:6px;display:flex}.field-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.4px;font-size:12px;font-weight:600}.field-input-wrap{position:relative}.field-icon{color:var(--text-faint);pointer-events:none;font-size:16px;position:absolute;top:50%;left:12px;transform:translateY(-50%)}.field-input{border:1.5px solid var(--border);background:var(--bg);width:100%;height:44px;color:var(--text);border-radius:10px;outline:none;padding:0 14px 0 38px;font-family:inherit;font-size:14px;transition:border-color .15s,box-shadow .15s}.field-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-lt);background:#fff}.remember-label{color:var(--text-muted);cursor:pointer;align-items:center;gap:8px;font-size:13px;display:flex}.btn-login{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:12px;justify-content:center;align-items:center;gap:8px;width:100%;height:48px;margin-top:4px;font-family:inherit;font-size:15px;font-weight:700;transition:background .15s;display:flex}.btn-login:hover{background:var(--primary-dk)}.login-footer{color:#ffffff40;text-align:center;font-size:12px}