@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap";:root{--primary-50: #eff6ff;--primary-100: #dbeafe;--primary-200: #bfdbfe;--primary-400: #60a5fa;--primary-500: #3b82f6;--primary-600: #2563eb;--primary-700: #1d4ed8;--bg-base: #0a0f1e;--bg-surface: #0f172a;--bg-elevated: #1e293b;--bg-card: rgba(30, 41, 59, .8);--bg-hover: rgba(59, 130, 246, .08);--bg-active: rgba(59, 130, 246, .15);--border-subtle: rgba(255, 255, 255, .06);--border-default: rgba(255, 255, 255, .1);--border-strong: rgba(59, 130, 246, .4);--text-primary: #f1f5f9;--text-secondary: #94a3b8;--text-muted: #475569;--text-accent: #60a5fa;--success: #10b981;--success-bg: rgba(16, 185, 129, .1);--warning: #f59e0b;--warning-bg: rgba(245, 158, 11, .1);--danger: #ef4444;--danger-bg: rgba(239, 68, 68, .1);--area-cn: #6ee7b7;--area-ch: #93c5fd;--area-lc: #fcd34d;--area-mt: #f9a8d4;--diff-easy: #10b981;--diff-medium: #f59e0b;--diff-hard: #ef4444;--sidebar-width: 240px;--header-height: 64px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 20px;--shadow-card: 0 4px 24px rgba(0, 0, 0, .3);--shadow-glow: 0 0 20px rgba(59, 130, 246, .15);--transition-fast: .15s ease;--transition-base: .25s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;width:100%}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background-color:var(--bg-base);color:var(--text-primary);line-height:1.5;-webkit-font-smoothing:antialiased}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--bg-elevated);border-radius:99px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.app-layout{display:flex;height:100vh;overflow:hidden}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);background:var(--bg-surface);border-right:1px solid var(--border-subtle);display:flex;flex-direction:column;padding:0;overflow-y:auto;position:relative;z-index:10}.sidebar-logo{display:flex;align-items:center;gap:10px;padding:20px 20px 0;text-decoration:none}.sidebar-logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--primary-500),var(--primary-700));border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:var(--shadow-glow)}.sidebar-logo-text{display:flex;flex-direction:column}.sidebar-logo-title{font-size:14px;font-weight:700;color:var(--text-primary);letter-spacing:-.3px}.sidebar-logo-subtitle{font-size:10px;font-weight:500;color:var(--text-muted);letter-spacing:.5px;text-transform:uppercase}.sidebar-divider{height:1px;background:var(--border-subtle);margin:20px 16px}.sidebar-section-label{font-size:10px;font-weight:600;letter-spacing:1px;text-transform:uppercase;color:var(--text-muted);padding:0 20px 8px}.sidebar-nav{display:flex;flex-direction:column;gap:2px;padding:0 10px}.sidebar-nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius-md);cursor:pointer;text-decoration:none;color:var(--text-secondary);font-size:13.5px;font-weight:500;transition:all var(--transition-fast);position:relative}.sidebar-nav-item:hover{background:var(--bg-hover);color:var(--text-primary)}.sidebar-nav-item.active{background:var(--bg-active);color:var(--primary-400)}.sidebar-nav-item.active:before{content:"";position:absolute;left:-10px;top:50%;transform:translateY(-50%);width:3px;height:60%;background:var(--primary-500);border-radius:0 4px 4px 0}.sidebar-nav-item svg{width:16px;height:16px;flex-shrink:0}.sidebar-footer{margin-top:auto;padding:16px;border-top:1px solid var(--border-subtle)}.sidebar-footer .simulado-badge{background:var(--bg-elevated);border:1px solid var(--border-default);border-radius:var(--radius-md);padding:10px 12px}.simulado-badge-label{font-size:10px;color:var(--text-muted);font-weight:500;letter-spacing:.5px;text-transform:uppercase}.simulado-badge-name{font-size:12px;color:var(--text-accent);font-weight:600;margin-top:2px}.main-content{flex:1;display:flex;flex-direction:column;overflow:hidden;background:var(--bg-base)}.header{height:var(--header-height);min-height:var(--header-height);background:var(--bg-surface);border-bottom:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between;padding:0 28px;gap:16px}.header-left{display:flex;flex-direction:column}.header-title{font-size:17px;font-weight:700;color:var(--text-primary);letter-spacing:-.3px}.header-subtitle{font-size:12px;color:var(--text-muted);font-weight:400}.header-right{display:flex;align-items:center;gap:12px}.select{appearance:none;background:var(--bg-elevated);border:1px solid var(--border-default);border-radius:var(--radius-md);color:var(--text-primary);font-size:13px;font-weight:500;font-family:Inter,sans-serif;padding:8px 32px 8px 12px;cursor:pointer;outline:none;transition:border-color var(--transition-fast);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;min-width:160px}.select:hover{border-color:var(--border-strong)}.select:focus{border-color:var(--primary-500)}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:var(--radius-md);font-size:13px;font-weight:500;font-family:Inter,sans-serif;cursor:pointer;transition:all var(--transition-fast);border:none;outline:none;text-decoration:none}.btn svg{width:14px;height:14px}.btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid var(--border-default)}.btn-ghost:hover{background:var(--bg-elevated);color:var(--text-primary);border-color:var(--border-strong)}.btn-primary{background:var(--primary-600);color:#fff}.btn-primary:hover{background:var(--primary-700)}.page-content{flex:1;overflow-y:auto;padding:28px}.card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:var(--shadow-card)}.card-header{display:flex;align-items:center;justify-content:space-between;padding:18px 20px 14px;border-bottom:1px solid var(--border-subtle)}.card-title{font-size:14px;font-weight:600;color:var(--text-primary)}.card-body{padding:20px}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}.stat-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:20px;display:flex;flex-direction:column;gap:12px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:border-color var(--transition-base),box-shadow var(--transition-base)}.stat-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow-glow)}.stat-icon{width:40px;height:40px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center}.stat-icon svg{width:20px;height:20px}.stat-icon.blue{background:#3b82f626;color:var(--primary-400)}.stat-icon.green{background:var(--success-bg);color:var(--success)}.stat-icon.yellow{background:var(--warning-bg);color:var(--warning)}.stat-icon.red{background:var(--danger-bg);color:var(--danger)}.stat-icon.cn{background:#6ee7b726;color:var(--area-cn)}.stat-icon.ch{background:#93c5fd26;color:var(--area-ch)}.stat-icon.lc{background:#fcd34d26;color:var(--area-lc)}.stat-icon.mt{background:#f9a8d426;color:var(--area-mt)}.stat-label{font-size:11px;font-weight:500;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.stat-value{font-size:26px;font-weight:800;color:var(--text-primary);letter-spacing:-1px;line-height:1.1;margin-top:2px}.stat-sub{font-size:12px;color:var(--text-secondary);margin-top:2px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-bottom:20px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:20px}.col-span-2{grid-column:span 2}.col-span-3{grid-column:span 3}.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:99px;font-size:11px;font-weight:600;letter-spacing:.3px}.badge-easy{background:var(--success-bg);color:var(--success)}.badge-medium{background:var(--warning-bg);color:var(--warning)}.badge-hard{background:var(--danger-bg);color:var(--danger)}.badge-cn{background:#6ee7b726;color:var(--area-cn)}.badge-ch{background:#93c5fd26;color:var(--area-ch)}.badge-lc{background:#fcd34d26;color:var(--area-lc)}.badge-mt{background:#f9a8d426;color:var(--area-mt)}.progress-bar{height:6px;background:var(--bg-elevated);border-radius:99px;overflow:hidden;margin-top:6px}.progress-fill{height:100%;border-radius:99px;transition:width .6s ease}.table-wrapper{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:13px}thead th{text-align:left;padding:10px 14px;font-size:11px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border-subtle);cursor:pointer;white-space:nowrap;-webkit-user-select:none;user-select:none}thead th:hover{color:var(--text-secondary)}tbody td{padding:12px 14px;border-bottom:1px solid var(--border-subtle);color:var(--text-primary);vertical-align:middle}tbody tr:last-child td{border-bottom:none}tbody tr{transition:background var(--transition-fast);cursor:pointer}tbody tr:hover{background:var(--bg-hover)}.rank-cell{font-weight:700;color:var(--text-muted);font-size:13px;min-width:36px}.rank-cell.top1{color:#fbbf24}.rank-cell.top2{color:#94a3b8}.rank-cell.top3{color:#cd7c2f}.name-cell{font-weight:500}.input{background:var(--bg-elevated);border:1px solid var(--border-default);border-radius:var(--radius-md);color:var(--text-primary);font-size:13px;font-family:Inter,sans-serif;padding:8px 12px;outline:none;transition:border-color var(--transition-fast);width:100%}.input::placeholder{color:var(--text-muted)}.input:focus{border-color:var(--primary-500)}.input-wrapper{position:relative;display:flex;align-items:center}.input-wrapper .icon{position:absolute;left:10px;color:var(--text-muted);width:14px;height:14px}.input-wrapper .input{padding-left:32px}.filters-row{display:flex;align-items:center;gap:12px;margin-bottom:20px;flex-wrap:wrap}.filter-tabs{display:flex;background:var(--bg-elevated);border-radius:var(--radius-md);padding:3px;gap:2px}.filter-tab{padding:6px 14px;border-radius:7px;cursor:pointer;font-size:12.5px;font-weight:500;color:var(--text-muted);transition:all var(--transition-fast);border:none;background:transparent;font-family:Inter,sans-serif}.filter-tab:hover{color:var(--text-primary)}.filter-tab.active{background:var(--bg-card);color:var(--text-primary);box-shadow:0 1px 4px #0000004d}.modal-overlay{position:fixed;inset:0;background:#000000b3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:100;padding:20px;animation:fadeIn var(--transition-fast)}.modal{background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-xl);width:100%;max-width:640px;max-height:90vh;overflow-y:auto;box-shadow:0 24px 80px #00000080;animation:slideUp .25s ease}.modal-header{display:flex;align-items:flex-start;justify-content:space-between;padding:24px 24px 16px;border-bottom:1px solid var(--border-subtle)}.modal-body{padding:24px}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.animate-in{animation:slideUp .3s ease}.login-page{min-height:100vh;background:var(--bg-base);display:flex;align-items:center;justify-content:center;padding:20px;position:relative;overflow:hidden}.login-bg{position:absolute;inset:0;background:radial-gradient(ellipse 80% 60% at 50% -20%,rgba(59,130,246,.15) 0%,transparent 70%),radial-gradient(ellipse 50% 40% at 80% 80%,rgba(139,92,246,.08) 0%,transparent 60%)}.login-card{background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-xl);padding:40px;width:100%;max-width:380px;position:relative;z-index:1;box-shadow:0 32px 80px #0006;animation:slideUp .4s ease}.login-logo{display:flex;align-items:center;gap:12px;margin-bottom:32px}.login-logo-icon{width:44px;height:44px;background:linear-gradient(135deg,var(--primary-500),var(--primary-700));border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-glow)}.login-title{font-size:22px;font-weight:800;color:var(--text-primary)}.login-subtitle{font-size:12px;color:var(--text-muted);margin-top:2px}.form-group{margin-bottom:16px}.form-label{display:block;font-size:12px;font-weight:500;color:var(--text-secondary);margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px}.error-msg{background:var(--danger-bg);border:1px solid rgba(239,68,68,.2);border-radius:var(--radius-md);padding:10px 14px;font-size:12.5px;color:var(--danger);margin-bottom:16px}.btn-block{width:100%;justify-content:center;padding:11px;font-size:14px;margin-top:8px}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 20px;color:var(--text-muted);text-align:center;gap:12px}.empty-state svg{opacity:.4}.empty-state-title{font-size:15px;font-weight:600;color:var(--text-secondary)}.empty-state-subtitle{font-size:13px}.loading-dots{display:flex;gap:6px;align-items:center;justify-content:center;padding:48px}.loading-dots span{width:8px;height:8px;background:var(--primary-500);border-radius:50%;animation:dot-bounce 1.4s infinite ease-in-out}.loading-dots span:nth-child(1){animation-delay:0s}.loading-dots span:nth-child(2){animation-delay:.2s}.loading-dots span:nth-child(3){animation-delay:.4s}@keyframes dot-bounce{0%,80%,to{transform:scale(.6);opacity:.5}40%{transform:scale(1);opacity:1}}.setup-page{min-height:100vh;background:var(--bg-base);display:flex;align-items:center;justify-content:center;padding:20px}.setup-card{background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-xl);padding:40px;width:100%;max-width:580px}.setup-step{display:flex;align-items:flex-start;gap:14px;margin-bottom:20px;padding:16px;background:var(--bg-elevated);border-radius:var(--radius-md)}.step-number{width:28px;height:28px;background:var(--primary-600);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0;margin-top:2px}.step-title{font-size:14px;font-weight:600;margin-bottom:4px}.step-desc{font-size:12.5px;color:var(--text-secondary);line-height:1.6}.step-code{background:var(--bg-base);border:1px solid var(--border-default);border-radius:var(--radius-sm);padding:10px 14px;font-size:12px;font-family:Courier New,monospace;color:var(--area-cn);margin-top:8px;white-space:pre-wrap;word-break:break-all}.recharts-tooltip-wrapper{outline:none!important}.custom-tooltip{background:var(--bg-elevated);border:1px solid var(--border-default);border-radius:var(--radius-md);padding:10px 14px;font-size:12px;box-shadow:var(--shadow-card);color:#fff}.custom-tooltip-label{font-weight:600;color:var(--text-primary);margin-bottom:6px}.custom-tooltip-item{display:flex;align-items:center;gap:6px;color:#fff;font-size:12px;margin-top:3px}.custom-tooltip-dot{width:8px;height:8px;border-radius:50%}@media(max-width:768px){.grid-2,.grid-3{grid-template-columns:1fr}.col-span-2,.col-span-3{grid-column:span 1}.stats-grid{grid-template-columns:repeat(2,1fr)}}.drop-zone{border:2px dashed var(--border-strong);border-radius:var(--radius-lg);padding:56px 32px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;cursor:pointer;transition:all var(--transition-base);background:var(--bg-elevated);text-align:center}.drop-zone:hover,.drop-zone.drag-over{border-color:var(--primary-500);background:#3b82f60d;box-shadow:0 0 0 4px #3b82f614}.drop-zone-icon{width:72px;height:72px;background:#3b82f61f;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;color:var(--primary-400);margin-bottom:4px}.drop-zone-icon svg{width:36px;height:36px}.drop-zone-title{font-size:16px;font-weight:600;color:var(--text-primary)}.drop-zone-sub{font-size:13px;color:var(--text-secondary)}.drop-zone-hint{font-size:11px;color:var(--text-muted);background:var(--bg-base);border:1px solid var(--border-subtle);border-radius:99px;padding:3px 12px;margin-top:4px}