*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;overflow:hidden}:root{--indigo: #6366f1;--indigo-dark: #4f46e5;--indigo-light: #eef2ff;--indigo-muted: rgba(99, 102, 241, .12);--success: #16a34a;--success-light: #f0fdf4;--danger: #dc2626;--danger-light: #fef2f2;--warning: #d97706;--warning-light: #fffbeb;--gray-50: #f9fafb;--gray-100: #f3f4f6;--gray-150: #eeede8;--gray-200: #e5e7eb;--gray-300: #d1d5db;--gray-400: #9ca3af;--gray-500: #6b7280;--gray-600: #4b5563;--gray-700: #374151;--gray-800: #1f2937;--gray-900: #111827;--sidebar-bg: #0f1117;--sidebar-border: rgba(255, 255, 255, .07);--sidebar-text: rgba(255, 255, 255, .45);--sidebar-text-active: #a5b4fc;--sidebar-active-bg: rgba(99, 102, 241, .18);--radius-sm: 6px;--radius: 8px;--radius-lg: 12px;--radius-xl: 16px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .06);--shadow: 0 1px 3px rgba(0, 0, 0, .08), 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08)}body{font-family:-apple-system,BlinkMacSystemFont,Inter,Segoe UI,Roboto,sans-serif;background:var(--gray-50);color:var(--gray-800);line-height:1.5;font-size:14px;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit}input,select,textarea{font-family:inherit}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius);font-size:13px;font-weight:500;border:1px solid transparent;transition:all .15s;white-space:nowrap;cursor:pointer;letter-spacing:.01em}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--indigo);color:#fff;border-color:var(--indigo)}.btn-primary:hover:not(:disabled){background:var(--indigo-dark);border-color:var(--indigo-dark)}.btn-success{background:var(--success);color:#fff}.btn-success:hover:not(:disabled){background:#15803d}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover:not(:disabled){background:#b91c1c}.btn-outline{background:#fff;border-color:var(--gray-200);color:var(--gray-700);box-shadow:var(--shadow-sm)}.btn-outline:hover:not(:disabled){background:var(--gray-50);border-color:var(--gray-300)}.btn-ghost{background:transparent;color:var(--gray-500);border-color:transparent}.btn-ghost:hover{background:var(--gray-100);color:var(--gray-700)}.btn-sm{padding:5px 10px;font-size:12px}.btn-lg{padding:11px 22px;font-size:14px}.card{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--gray-200);padding:1.25rem;box-shadow:var(--shadow)}.badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:20px;font-size:11px;font-weight:500;letter-spacing:.01em}.badge-success{background:#dcfce7;color:#15803d}.badge-danger{background:#fee2e2;color:#b91c1c}.badge-warning{background:#fef3c7;color:#b45309}.badge-info{background:var(--indigo-light);color:var(--indigo-dark)}.badge-gray{background:var(--gray-100);color:var(--gray-600)}.badge-purple{background:#ede9fe;color:#7c3aed}.form-group{margin-bottom:1rem}.form-label{display:block;font-size:12px;font-weight:500;color:var(--gray-600);margin-bottom:5px;letter-spacing:.02em}.form-input{width:100%;padding:8px 12px;border:1px solid var(--gray-200);border-radius:var(--radius);font-size:13px;color:var(--gray-800);background:#fff;transition:all .15s;outline:none;box-shadow:var(--shadow-sm)}.form-input:focus{border-color:var(--indigo);box-shadow:0 0 0 3px #6366f11f}.form-input::placeholder{color:var(--gray-400)}.form-input:hover:not(:focus){border-color:var(--gray-300)}.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;display:inline-block;flex-shrink:0}.spinner-dark{border-color:var(--gray-200);border-top-color:var(--indigo)}@keyframes spin{to{transform:rotate(360deg)}}.page-loader{display:flex;align-items:center;justify-content:center;min-height:300px;flex-direction:column;gap:12px;color:var(--gray-400);font-size:13px}.stat-card{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--gray-200);padding:1.1rem 1.25rem;box-shadow:var(--shadow)}.stat-icon{width:32px;height:32px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:15px;margin-bottom:12px;flex-shrink:0}.si-purple{background:#ede9fe;color:#7c3aed}.si-blue{background:#dbeafe;color:#2563eb}.si-green{background:#dcfce7;color:#15803d}.si-amber{background:#fef3c7;color:#b45309}.si-red{background:#fee2e2;color:#b91c1c}.si-indigo{background:var(--indigo-light);color:var(--indigo-dark)}.stat-card .stat-label{font-size:11px;color:var(--gray-400);margin-bottom:4px;letter-spacing:.04em;text-transform:uppercase;font-weight:500}.stat-card .stat-value{font-size:26px;font-weight:600;color:var(--gray-900);line-height:1}.stat-card .stat-sub{font-size:11px;color:var(--gray-400);margin-top:4px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse}th{text-align:left;padding:10px 14px;font-size:11px;font-weight:500;color:var(--gray-400);text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid var(--gray-100);background:var(--gray-50)}td{padding:12px 14px;border-bottom:1px solid var(--gray-100);color:var(--gray-700);vertical-align:middle;font-size:13px}tr:last-child td{border-bottom:none}tr:hover td{background:#fafafa}.sidebar{width:220px;height:100dvh;background:var(--sidebar-bg);display:flex;flex-direction:column;flex-shrink:0;overflow:hidden}.sidebar-logo{padding:18px 16px 14px;border-bottom:1px solid var(--sidebar-border)}.sidebar-logo-mark{width:30px;height:30px;border-radius:7px;background:linear-gradient(135deg,#6366f1,#8b5cf6);display:flex;align-items:center;justify-content:center;margin-bottom:10px;font-size:14px;color:#fff}.sidebar-logo h2{color:#fff;font-size:13px;font-weight:600;letter-spacing:.01em}.sidebar-logo p{color:#ffffff4d;font-size:10px;margin-top:1px;letter-spacing:.06em;text-transform:uppercase;font-weight:500}.sidebar-nav{padding:10px 0;flex:1;overflow-y:auto}.nav-section{padding:12px 16px 4px;font-size:9px;color:#fff3;letter-spacing:.1em;text-transform:uppercase;font-weight:500}.nav-item{display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:var(--radius-sm);margin:1px 8px;color:var(--sidebar-text);font-size:12.5px;cursor:pointer;transition:all .15s;font-weight:400}.nav-item svg{width:16px;height:16px;flex-shrink:0;opacity:.7}.nav-item:hover{color:#ffffffb3;background:#ffffff0d}.nav-item:hover svg{opacity:1}.nav-item.active{color:var(--sidebar-text-active);background:var(--sidebar-active-bg)}.nav-item.active svg{opacity:1;color:#a5b4fc}.sidebar-bottom{padding:12px 14px;border-top:1px solid var(--sidebar-border);flex-shrink:0}.sidebar-user{display:flex;align-items:center;gap:8px}.sidebar-user-avatar{width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,#6366f1,#8b5cf6);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:11px;flex-shrink:0}.sidebar-user-name{color:#ffffffbf;font-size:12px;font-weight:500}.sidebar-user-role{color:#ffffff47;font-size:10px}.topbar{background:#fff;border-bottom:1px solid var(--gray-100);padding:0 1.5rem;height:54px;display:flex;align-items:center;justify-content:space-between;flex-shrink:0;box-shadow:0 1px 0 var(--gray-100)}.topbar h1{font-size:15px;font-weight:600;color:var(--gray-900)}.topbar-meta{font-size:12px;color:var(--gray-400)}.page-content{padding:1.5rem}.option-btn{width:100%;display:flex;align-items:flex-start;gap:12px;padding:13px 16px;border:1.5px solid var(--gray-200);border-radius:var(--radius-lg);background:#fff;text-align:left;transition:all .15s;cursor:pointer;box-shadow:var(--shadow-sm)}.option-btn:hover:not(:disabled){border-color:var(--indigo);background:var(--indigo-light);box-shadow:0 0 0 3px #6366f114}.option-btn.selected{border-color:var(--indigo);background:var(--indigo-light);box-shadow:0 0 0 3px #6366f11f}.option-btn.correct{border-color:var(--success);background:var(--success-light)}.option-btn.wrong{border-color:var(--danger);background:var(--danger-light)}.option-label{width:28px;height:28px;border-radius:50%;border:1.5px solid var(--gray-300);background:var(--gray-50);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:12px;flex-shrink:0;color:var(--gray-500);transition:all .15s}.option-btn.selected .option-label{border-color:var(--indigo);background:var(--indigo);color:#fff}.option-btn.correct .option-label{border-color:var(--success);background:var(--success);color:#fff}.option-btn.wrong .option-label{border-color:var(--danger);background:var(--danger);color:#fff}.progress-bar{height:5px;background:var(--gray-100);border-radius:10px;overflow:hidden}.progress-fill{height:100%;background:var(--indigo);border-radius:10px;transition:width .4s ease}.divider{height:1px;background:var(--gray-100);margin:1rem 0}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.section-header h2{font-size:13px;font-weight:600;color:var(--gray-800);letter-spacing:.01em}@keyframes fadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}.mobile-menu-btn{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:8px;color:var(--gray-700)}.mobile-menu-btn span{width:20px;height:2px;background:var(--gray-700);border-radius:1px;transition:all .3s}.mobile-menu-btn.active span:nth-child(1){transform:rotate(45deg) translateY(8px)}.mobile-menu-btn.active span:nth-child(2){opacity:0}.mobile-menu-btn.active span:nth-child(3){transform:rotate(-45deg) translateY(-8px)}.mobile-menu-overlay{display:none;position:fixed;right:0;bottom:0;left:0;background:#00000080;z-index:99;top:54px}.mobile-menu-overlay.active{display:block}@media (max-width: 768px){.sidebar{position:fixed;left:0;top:54px;z-index:100;height:calc(100dvh - 54px);transform:translate(-100%);transition:transform .3s ease;width:200px}.sidebar.active{transform:translate(0)}.mobile-menu-btn{display:flex}.topbar{padding:0 1rem}.topbar h1{font-size:14px}.topbar-meta{font-size:11px}.page-content{padding:1rem}.stat-grid{grid-template-columns:repeat(2,1fr)!important;gap:10px!important}.tests-grid,.dashboard-grid{grid-template-columns:1fr!important;gap:12px!important}body{font-size:13px}.stat-card .stat-value{font-size:22px}.stat-card .stat-label{font-size:10px}.section-header h2{font-size:12px}.welcome-banner{flex-direction:column!important;text-align:center!important;gap:12px!important}.welcome-banner>div:last-child{align-self:center}.card{padding:1rem}.btn{padding:6px 12px;font-size:12px}.btn-lg{padding:10px 18px}}@media (max-width: 480px){:root{--radius: 6px;--radius-lg: 10px}body{font-size:12px}.topbar{height:50px;padding:0 .75rem}.page-content{padding:.75rem}.stat-card{padding:.9rem 1rem;border-radius:var(--radius)}.stat-card .stat-value{font-size:18px}.stat-card .stat-label{font-size:9px}.stat-card .stat-sub{font-size:10px}.stat-grid{grid-template-columns:repeat(2,1fr)!important;gap:8px!important}.stat-icon{width:28px;height:28px;font-size:13px;margin-bottom:8px}.card{padding:.9rem;border-radius:var(--radius)}.btn{padding:5px 10px;font-size:11px;gap:4px}.btn-sm{padding:4px 8px;font-size:11px}.btn-lg{padding:8px 16px}.sidebar{width:180px}.sidebar-logo-mark{width:28px;height:28px;margin-bottom:8px;font-size:12px}.sidebar-logo h2{font-size:12px}.sidebar-logo p{font-size:9px}.nav-item{font-size:12px;padding:7px 8px;margin:0 6px}.nav-item svg{width:15px;height:15px}.sidebar-user-avatar{width:24px;height:24px;font-size:10px}.sidebar-user-name{font-size:11px}.sidebar-user-role{font-size:9px}.option-btn{padding:11px 14px;gap:10px}.option-label{width:24px;height:24px;font-size:11px}.option-text{font-size:12px}.form-input{padding:7px 10px;font-size:12px}.form-label{font-size:11px;margin-bottom:4px}.badge{padding:2px 6px;font-size:10px}.section-header{margin-bottom:10px}.section-header h2{font-size:11px}.table-wrap{margin:0}table{font-size:12px;display:block;width:100%}.grid-2col{display:grid;grid-template-columns:repeat(2,1fr);gap:1.25rem}@media (max-width: 768px){.grid-2col{grid-template-columns:1fr}}thead{display:none}tbody{display:block}tr{display:block;border:1px solid var(--gray-200);border-radius:8px;margin-bottom:12px;padding:0;background:#fff;overflow:hidden}td{display:block;font-size:12px;border-bottom:1px solid var(--gray-100);position:relative;padding:10px 10px 10px 140px}td:last-child{border-bottom:none}td:before{content:attr(data-label);position:absolute;left:10px;font-weight:600;font-size:10px;color:var(--gray-500);text-transform:uppercase;letter-spacing:.05em;width:120px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}td.actions{padding-left:10px!important}td.actions:before{content:attr(data-label);position:static!important;display:block!important;margin-bottom:8px;padding-bottom:8px;border-bottom:1px solid var(--gray-100);width:100%!important}td.actions div,td.actions .actions-flex{display:flex;flex-direction:column;gap:6px}td.actions button,td.actions a,td.actions .btn{width:100%!important;justify-content:center;text-align:center}.test-container{max-height:calc(100dvh - 154px)}.test-question{font-size:13px}.test-header{padding:.75rem;height:auto;flex-wrap:wrap;flex-direction:column;gap:8px;justify-content:flex-start}.test-header>div:first-child{flex:1;width:100%;order:1}.test-header-right{width:100%;gap:8px;order:2;display:flex;justify-content:space-between}.test-header-right>button{flex:0 1 auto;min-width:100px}.test-body{flex-direction:column}.question-area{flex:1;padding:.75rem!important}.question-area>div{max-width:100%!important}.test-palette{width:100%!important;height:auto!important;border-left:none!important;border-top:1px solid var(--gray-100)!important;padding:10px .75rem!important;max-height:120px;overflow-x:auto;overflow-y:hidden}.palette-grid{display:flex!important;flex-wrap:nowrap!important;overflow-x:auto!important;gap:6px!important;padding:4px 2px!important}.palette-grid button{flex:0 0 32px!important;height:32px!important;font-size:11px!important}.palette-legend{display:none}.topbar{height:50px;flex-wrap:wrap}.topbar h1{font-size:13px}.topbar-meta{display:none}.admin-grid{grid-template-columns:1fr!important}.analytics-grid{grid-template-columns:1fr!important;gap:10px!important}.test-header-container{flex-direction:column}.test-header-container>div:last-child{width:100%}.test-header-container button{width:100%}}@media (max-height: 550px){.test-header{padding:.4rem 1rem!important;flex-direction:row!important;height:auto!important}.test-header-right{width:auto!important;display:flex!important}.test-body{flex-direction:row!important}.question-area{padding:.75rem!important}.question-area>div{max-width:100%!important}.test-palette{width:140px!important;max-height:none!important;border-left:1px solid var(--gray-100)!important;border-top:none!important;padding:.5rem!important;overflow-y:auto!important;overflow-x:hidden!important}.palette-grid{display:grid!important;grid-template-columns:repeat(4,1fr)!important;gap:4px!important}.palette-grid button{flex:none!important;height:28px!important;font-size:10px!important}.palette-legend{display:none!important}.option-btn{padding:8px 12px!important;margin-bottom:4px!important}}@media (min-width: 769px) and (max-width: 1024px){.stat-grid{grid-template-columns:repeat(2,1fr)!important;gap:12px!important}.dashboard-grid{grid-template-columns:1fr!important}.page-content{padding:1.2rem}.sidebar{width:200px}body{font-size:13px}.stat-card .stat-value{font-size:24px}.btn{padding:7px 14px;font-size:12px}.table-wrap{overflow-x:auto}table{font-size:12px}th{padding:10px 12px;font-size:11px}td{padding:10px 12px;font-size:12px}td:nth-child(7) div{display:flex;flex-wrap:wrap;gap:6px}td:nth-child(7) button{flex:1;min-width:70px}.test-header{padding:0 1.25rem;height:56px}.test-palette{width:160px!important;height:auto}.palette-grid{grid-template-columns:repeat(4,1fr)!important}.palette-legend{display:flex}.question-area{padding:1rem!important}.option-btn{padding:10px 12px}}@media (min-width: 1025px){.mobile-menu-btn,.mobile-menu-overlay{display:none!important}.sidebar{transform:translate(0)!important;position:static!important}}