:root{--primary: #1e40af;--primary-hover: #1d3fa8;--primary-light: #dbeafe;--on-primary: #ffffff;--secondary: #3b82f6;--secondary-light: #eff6ff;--accent: #d97706;--accent-light: #fef3c7;--success: #059669;--success-light: #d1fae5;--danger: #dc2626;--danger-light: #fee2e2;--bg: #f8fafc;--bg-elevated: #ffffff;--card: #ffffff;--card-hover: #fafbff;--text: #0f172a;--text-secondary: #334155;--text-muted: #64748b;--text-on-primary: #ffffff;--border: #e2e8f0;--border-hover: #cbd5e1;--border-focus: var(--secondary);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 20px;--radius-pill: 999px;--shadow-xs: 0 1px 2px rgba(15, 23, 42, .04);--shadow-sm: 0 1px 3px rgba(15, 23, 42, .06), 0 1px 2px rgba(15, 23, 42, .04);--shadow-md: 0 4px 6px -1px rgba(15, 23, 42, .07), 0 2px 4px -2px rgba(15, 23, 42, .05);--shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, .08), 0 4px 6px -4px rgba(15, 23, 42, .05);--shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, .1), 0 8px 10px -6px rgba(15, 23, 42, .06);--shadow-primary: 0 4px 14px rgba(30, 64, 175, .25);--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .2s cubic-bezier(.4, 0, .2, 1);--transition-slow: .3s cubic-bezier(.4, 0, .2, 1);--font-sans: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: .9375rem;--text-lg: 1.0625rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--leading-tight: 1.25;--leading-normal: 1.5;--leading-relaxed: 1.625;--weight-normal: 400;--weight-medium: 500;--weight-semibold: 600;--weight-bold: 700;--weight-extrabold: 800;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:var(--text-base);line-height:var(--leading-normal);font-weight:var(--weight-normal);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}a{color:var(--primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--primary-hover);text-decoration:underline}button{font-family:inherit;font-size:var(--text-sm);font-weight:var(--weight-semibold);cursor:pointer;border:1px solid var(--border);background:var(--bg-elevated);color:var(--text);padding:8px 16px;border-radius:var(--radius-md);transition:all var(--transition-fast);display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);white-space:nowrap;line-height:1.4;min-height:36px}button:hover:not(:disabled){background:var(--secondary-light);border-color:var(--border-hover);transform:translateY(-1px);box-shadow:var(--shadow-sm)}button:active:not(:disabled){transform:translateY(0);box-shadow:var(--shadow-xs)}button:disabled{opacity:.5;cursor:not-allowed}button:focus-visible{outline:2px solid var(--secondary);outline-offset:2px}button.primary{background:var(--primary);color:var(--on-primary);border-color:var(--primary);box-shadow:var(--shadow-primary)}button.primary:hover:not(:disabled){background:var(--primary-hover);border-color:var(--primary-hover);box-shadow:0 6px 20px #1e40af4d}button.danger{border-color:var(--danger);color:var(--danger);background:var(--bg-elevated)}button.danger:hover:not(:disabled){background:var(--danger-light);border-color:var(--danger)}button.ghost{background:transparent;border-color:transparent;color:var(--text-secondary)}button.ghost:hover:not(:disabled){background:var(--secondary-light);color:var(--primary)}input,textarea,select{font-family:inherit;font-size:var(--text-sm);background:var(--bg-elevated);color:var(--text);border:1px solid var(--border);border-radius:var(--radius-md);padding:10px 12px;width:100%;transition:all var(--transition-fast);min-height:40px}input::placeholder,textarea::placeholder{color:var(--text-muted)}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--border-focus);box-shadow:0 0 0 3px #3b82f61f}input:disabled,textarea:disabled{background:var(--bg);cursor:not-allowed;opacity:.6}textarea{resize:vertical;min-height:80px;line-height:var(--leading-normal)}label{display:block;margin-bottom:var(--space-1);color:var(--text-secondary);font-size:var(--text-xs);font-weight:var(--weight-semibold);text-transform:uppercase;letter-spacing:.04em}.muted{color:var(--text-muted)}.error{color:var(--danger);background:var(--danger-light);border:1px solid var(--danger);border-radius:var(--radius-md);padding:10px 14px;font-size:var(--text-sm);margin-bottom:var(--space-4)}.field{margin-bottom:var(--space-4)}.row{display:flex;gap:var(--space-3);align-items:center;flex-wrap:wrap}.app{max-width:1200px;margin:0 auto;padding:var(--space-8) var(--space-6) var(--space-12)}.nav{display:flex;flex-direction:column;gap:var(--space-3);border-bottom:1px solid var(--border);margin-bottom:var(--space-8)}.nav-top{display:flex;align-items:center;gap:var(--space-2);padding-top:var(--space-4)}.nav-tabs{display:flex;align-items:center;gap:var(--space-1);padding-bottom:var(--space-3);flex-wrap:wrap}.nav-tabs .user-info{margin-left:auto}.nav .brand{display:flex;align-items:center;gap:var(--space-2);font-weight:var(--weight-extrabold);font-size:1.25rem;color:var(--text);letter-spacing:-.02em}.nav .brand-text{display:flex;flex-direction:column;line-height:1.2}.nav .brand .brand-sub{font-size:1.25rem;font-weight:var(--weight-semibold);color:var(--text-muted);letter-spacing:0;display:flex;align-items:baseline;gap:var(--space-2)}.nav .brand .brand-version{font-size:.75rem;font-weight:var(--weight-medium);color:var(--primary);background:var(--primary-light);padding:1px 7px;border-radius:var(--radius-pill);letter-spacing:0}.nav .brand .logo{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;background:linear-gradient(135deg,var(--primary),var(--secondary));border-radius:var(--radius-sm);color:var(--on-primary);font-size:18px;box-shadow:var(--shadow-primary)}.nav .spacer{flex:1}.nav .user-info{display:flex;align-items:center;gap:var(--space-3);font-size:var(--text-sm);color:var(--text-muted)}.nav .user-badge{display:inline-flex;align-items:center;padding:3px 10px;background:var(--primary-light);color:var(--primary);border-radius:var(--radius-pill);font-size:var(--text-xs);font-weight:var(--weight-semibold);text-transform:uppercase;letter-spacing:.05em}.nav-link{padding:8px 14px;border-radius:var(--radius-md);color:var(--text-secondary);font-weight:var(--weight-medium);font-size:var(--text-sm);transition:all var(--transition-fast);text-decoration:none}.nav-link:hover{color:var(--primary);background:var(--secondary-light);text-decoration:none}.nav-link.active{color:var(--primary);background:var(--primary-light);font-weight:var(--weight-semibold)}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-6);margin-bottom:var(--space-4);box-shadow:var(--shadow-xs);transition:all var(--transition-base)}.card:hover{box-shadow:var(--shadow-md);border-color:var(--border-hover)}.card-clickable{cursor:pointer;text-decoration:none;color:inherit;display:block}.card-clickable:hover{text-decoration:none;color:inherit;transform:translateY(-2px);box-shadow:var(--shadow-lg)}.card-menu{position:relative;flex-shrink:0}.card-menu-toggle{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;padding:0;border:1px solid transparent;border-radius:var(--radius);background:transparent;color:var(--text-muted);cursor:pointer;transition:all var(--transition-base)}.card-menu-toggle:hover{background:var(--bg-elevated);border-color:var(--border);color:var(--text)}.card-menu-dropdown{position:absolute;top:100%;right:0;margin-top:4px;min-width:140px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);z-index:100;padding:4px;display:flex;flex-direction:column}.card-menu-item{text-align:left;border:none;background:transparent;padding:8px 12px;border-radius:var(--radius-sm);cursor:pointer;font-size:.875rem;color:var(--text);transition:background var(--transition-base)}.card-menu-item:hover{background:var(--bg-elevated)}.card-menu-item.danger{color:var(--danger)}.card-menu-item.danger:hover{background:var(--danger-light)}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--space-4)}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:var(--space-4);margin-bottom:var(--space-6)}.stat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-5);box-shadow:var(--shadow-xs);position:relative;overflow:hidden}.stat-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--secondary))}.stat-card .v{font-size:var(--text-3xl);font-weight:var(--weight-extrabold);color:var(--primary);line-height:1.1;letter-spacing:-.02em}.stat-card .k{color:var(--text-muted);font-size:var(--text-xs);margin-top:var(--space-2);text-transform:uppercase;letter-spacing:.05em;font-weight:var(--weight-semibold)}table{width:100%;border-collapse:separate;border-spacing:0;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-xs)}th,td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--border);font-size:var(--text-sm)}th{background:var(--bg);color:var(--text-muted);font-weight:var(--weight-semibold);font-size:var(--text-xs);text-transform:uppercase;letter-spacing:.05em}thead tr th:first-child{border-top-left-radius:var(--radius-lg)}thead tr th:last-child{border-top-right-radius:var(--radius-lg)}tbody tr:last-child td:first-child{border-bottom-left-radius:var(--radius-lg)}tbody tr:last-child td:last-child{border-bottom-right-radius:var(--radius-lg)}tbody tr{transition:background var(--transition-fast)}tbody tr:hover{background:var(--secondary-light)}tbody tr:last-child td{border-bottom:none}.h-row{display:flex;justify-content:space-between;align-items:flex-start;gap:var(--space-4);margin-bottom:var(--space-6)}.h-row h2{font-size:var(--text-2xl);font-weight:var(--weight-extrabold);color:var(--text);letter-spacing:-.02em;line-height:var(--leading-tight)}.h-row h3{font-size:var(--text-lg);font-weight:var(--weight-bold);color:var(--text);margin-bottom:var(--space-2)}h3{font-size:var(--text-lg);font-weight:var(--weight-bold);color:var(--text);margin-bottom:var(--space-4)}.login-wrap{display:flex;justify-content:center;align-items:flex-start;min-height:100vh;padding:var(--space-12) var(--space-6);background:linear-gradient(135deg,#f0f4ff,#f8fafc,#fff7ed)}.login-card{width:100%;max-width:400px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-xl);padding:var(--space-10);box-shadow:var(--shadow-xl)}.login-card .login-brand{display:flex;align-items:center;gap:var(--space-4);margin-bottom:var(--space-6)}.login-card .brand-text{display:flex;flex-direction:column;line-height:1.2}.login-card .logo{display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;background:linear-gradient(135deg,var(--primary),var(--secondary));border-radius:var(--radius-lg);color:var(--on-primary);font-size:28px;flex-shrink:0;box-shadow:var(--shadow-primary)}.login-card h1{font-size:var(--text-2xl);font-weight:var(--weight-extrabold);color:var(--text);letter-spacing:-.02em;margin-bottom:var(--space-1)}.login-card .sub{color:var(--text-muted);font-size:var(--text-xl);font-weight:var(--weight-semibold);margin-bottom:0}.chart-wrap{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-6);margin-top:var(--space-4);height:360px;box-shadow:var(--shadow-xs)}.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--radius-pill);font-size:var(--text-xs);font-weight:var(--weight-semibold)}.badge-primary{background:var(--primary-light);color:var(--primary)}.badge-success{background:var(--success-light);color:var(--success)}.badge-muted{background:var(--bg);color:var(--text-muted)}.skeleton{background:linear-gradient(90deg,var(--bg) 25%,var(--secondary-light) 50%,var(--bg) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius-md)}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.solved-panel{background:var(--bg);border-radius:var(--radius-md);padding:var(--space-4)}.solved-panel .solved-input{display:flex;gap:var(--space-2);margin-bottom:var(--space-3)}.empty-state{text-align:center;padding:var(--space-10) var(--space-6);color:var(--text-muted)}.empty-state .icon{font-size:48px;margin-bottom:var(--space-3);opacity:.3}.empty-state .title{font-size:var(--text-lg);font-weight:var(--weight-semibold);color:var(--text-secondary);margin-bottom:var(--space-1)}.empty-state .desc{font-size:var(--text-sm);color:var(--text-muted)}@media (max-width: 768px){.app{padding:var(--space-4) var(--space-4) var(--space-8)}.nav-top{flex-wrap:wrap;gap:var(--space-2)}.nav-tabs{flex-wrap:wrap;gap:var(--space-1)}.h-row{flex-direction:column;gap:var(--space-3)}.grid{grid-template-columns:1fr}.login-card{padding:var(--space-6)}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}[data-theme=aurora]{--primary: #2563eb;--primary-hover: #1d4ed8;--primary-light: #dbeafe;--on-primary: #ffffff;--secondary: #06b6d4;--secondary-light: #cffafe;--accent: #15803d;--accent-light: #dcfce7;--success: #059669;--success-light: #d1fae5;--danger: #dc2626;--danger-light: #fee2e2;--bg: #eff6ff;--bg-elevated: rgba(255, 255, 255, .88);--card: rgba(255, 255, 255, .86);--card-hover: rgba(255, 255, 255, .94);--text: #0f172a;--text-secondary: #1e293b;--text-muted: #334155;--text-on-primary: #ffffff;--border: rgba(37, 99, 235, .2);--border-hover: rgba(6, 182, 212, .5);--border-focus: var(--secondary);--shadow-xs: 0 1px 3px rgba(37, 99, 235, .12);--shadow-sm: 0 2px 6px rgba(37, 99, 235, .14);--shadow-md: 0 8px 20px rgba(29, 78, 216, .18);--shadow-lg: 0 16px 40px rgba(6, 182, 212, .22);--shadow-xl: 0 24px 60px rgba(6, 182, 212, .26);--shadow-primary: 0 6px 20px rgba(37, 99, 235, .45)}[data-theme=aurora] body{background:radial-gradient(at 15% 15%,rgba(37,99,235,.34),transparent 55%),radial-gradient(at 85% 10%,rgba(6,182,212,.26),transparent 55%),radial-gradient(at 75% 80%,rgba(21,128,61,.26),transparent 50%),radial-gradient(at 10% 95%,rgba(5,150,105,.24),transparent 50%),radial-gradient(at 50% 50%,rgba(29,78,216,.1),transparent 70%),#eef6ff;background-attachment:fixed;background-size:200% 200%;animation:aurora-shift 20s ease-in-out infinite}@keyframes aurora-shift{0%,to{background-position:0% 0%,100% 0%,50% 100%,0% 100%}50%{background-position:25% 30%,75% 20%,60% 70%,10% 80%}}[data-theme=aurora] .card,[data-theme=aurora] .stat-card,[data-theme=aurora] .chart-wrap,[data-theme=aurora] .login-card,[data-theme=aurora] table{background:var(--card);-webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%)}[data-theme=aurora] .card,[data-theme=aurora] .stat-card,[data-theme=aurora] .login-card{position:relative;border-color:transparent}[data-theme=aurora] .card:after,[data-theme=aurora] .stat-card:after,[data-theme=aurora] .login-card:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:inherit;padding:1px;background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 45%,var(--accent) 100%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;opacity:.7;transition:opacity var(--transition-base)}[data-theme=aurora] .card:hover:after,[data-theme=aurora] .card-clickable:hover:after,[data-theme=aurora] .stat-card:hover:after{opacity:1}[data-theme=aurora] .card:hover,[data-theme=aurora] .card-clickable:hover,[data-theme=aurora] .stat-card:hover{box-shadow:var(--shadow-lg)}[data-theme=aurora] button.primary{background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 50%,var(--accent) 100%);border-color:transparent;box-shadow:var(--shadow-primary)}[data-theme=aurora] button.primary:hover:not(:disabled){background:linear-gradient(135deg,var(--primary-hover) 0%,#0891b2 50%,#166534 100%);box-shadow:0 10px 28px #15803d73;transform:translateY(-1px)}[data-theme=aurora] .nav .logo,[data-theme=aurora] .login-card .logo{background:linear-gradient(135deg,#2563eb,#06b6d4 45%,#15803d);box-shadow:0 6px 22px #15803d73}[data-theme=aurora] .nav-link{color:var(--text);font-weight:var(--weight-semibold)}[data-theme=aurora] .nav-link.active{background:linear-gradient(135deg,var(--primary-light),var(--secondary-light),var(--accent-light));color:var(--primary-hover);font-weight:var(--weight-bold)}[data-theme=aurora] .nav-link:hover{background:linear-gradient(135deg,#2563eb1f,#06b6d41f,#15803d1f)}[data-theme=aurora] .badge-primary{background:linear-gradient(135deg,var(--primary-light),var(--secondary-light),var(--accent-light));color:var(--primary-hover);border:1px solid rgba(37,99,235,.28)}[data-theme=aurora] .badge-success{border:1px solid rgba(5,150,105,.3)}[data-theme=aurora] .nav .user-badge{background:linear-gradient(135deg,var(--primary-light),var(--secondary-light),var(--accent-light));border:1px solid rgba(37,99,235,.28)}[data-theme=aurora] .nav .brand-version{background:linear-gradient(135deg,var(--primary),var(--secondary),var(--accent));color:var(--on-primary)}[data-theme=aurora] .stat-card:before{background:linear-gradient(90deg,var(--primary),var(--secondary),var(--accent));height:4px}[data-theme=aurora] .stat-card .v{background:linear-gradient(135deg,var(--primary-hover) 0%,var(--secondary) 50%,var(--accent) 100%);-webkit-background-clip:text;background-clip:text;color:transparent}[data-theme=aurora] th{background:linear-gradient(135deg,#2563eb29,#06b6d424,#15803d1f);color:var(--text-secondary)}[data-theme=aurora] tbody tr:hover{background:linear-gradient(90deg,#2563eb1a,#06b6d414,#15803d14)}[data-theme=aurora] input,[data-theme=aurora] textarea,[data-theme=aurora] select{background:#ffffffe0;border-color:var(--border)}[data-theme=aurora] input:focus,[data-theme=aurora] textarea:focus,[data-theme=aurora] select:focus{border-color:var(--secondary);box-shadow:0 0 0 3px #2563eb38}[data-theme=aurora] .login-wrap{background:radial-gradient(at 20% 20%,rgba(37,99,235,.4),transparent 50%),radial-gradient(at 80% 20%,rgba(6,182,212,.32),transparent 50%),radial-gradient(at 50% 90%,rgba(21,128,61,.3),transparent 50%),radial-gradient(at 90% 70%,rgba(5,150,105,.2),transparent 55%),#eef6ff}[data-theme=aurora] .skeleton{background:linear-gradient(90deg,#2563eb1f 20%,#06b6d442,#15803d38,#2563eb1f 95%);background-size:200% 100%}.theme-dropdown{position:relative;flex-shrink:0}.theme-dropdown-toggle{display:inline-flex;align-items:center;gap:var(--space-2);padding:6px 10px;font-size:var(--text-xs);font-weight:var(--weight-semibold);min-height:0}.theme-dropdown-toggle svg{flex-shrink:0}.theme-dropdown-toggle svg:last-of-type{opacity:.6;transition:transform var(--transition-fast)}.theme-dropdown-toggle[aria-expanded=true] svg:last-of-type{transform:rotate(180deg)}.theme-dropdown-menu{position:absolute;top:100%;right:0;margin-top:6px;min-width:180px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);z-index:100;padding:4px;display:flex;flex-direction:column}.theme-dropdown-item{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2);border:none;background:transparent;padding:8px 12px;border-radius:var(--radius-sm);color:var(--text);font-size:var(--text-sm);font-weight:var(--weight-medium);text-align:left;min-height:0;box-shadow:none}.theme-dropdown-item:hover:not(.active):not(:disabled){background:var(--secondary-light);color:var(--primary);transform:none;box-shadow:none}.theme-dropdown-item.active{color:var(--primary);font-weight:var(--weight-semibold);background:var(--primary-light)}.theme-dropdown-item.active svg{color:var(--primary)}[data-theme=aurora] .theme-dropdown-menu{background:#ffffffeb;-webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%)}@media (prefers-reduced-motion: reduce){[data-theme=aurora] body{animation:none!important}}