@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--primary: #3b82f6;--primary-dark: #2563eb;--secondary: #1d4ed8;--secondary-dark: #1e40af;--success: #10b981;--success-dark: #059669;--danger: #ef4444;--danger-dark: #dc2626;--warning: #f59e0b;--warning-dark: #d97706;--info: #0ea5e9;--info-dark: #0284c7;--light: #f8fafc;--dark: #1e293b;--white: #ffffff;--gray-100: #f1f5f9;--gray-200: #e2e8f0;--gray-300: #cbd5e1;--gray-400: #94a3b8;--gray-500: #64748b;--gray-600: #475569;--gray-700: #334155;--gray-800: #1e293b;--gray-900: #0f172a;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--radius-sm: .25rem;--radius-md: .375rem;--radius-lg: .5rem;--radius-xl: .75rem;--radius-2xl: 1rem;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color .3s ease,color .3s ease}body{--bg-primary: #f8fafc;--bg-card: #ffffff;--bg-card-light: #f1f5f9;--text-primary: #1e293b;--text-secondary: #475569;--text-muted: #64748b;--border-color: #e2e8f0;--shadow-color: rgba(0, 0, 0, .1)}.app,.app-header,.welcome-card,.data-input-card,.results-card,.feature-preview,.btn,.table-input,.stat-card,.results-table-cell{transition:background-color .3s ease,color .3s ease,border-color .3s ease,box-shadow .3s ease}.app{min-height:100vh;background:var(--bg-primary);transition:background-color .3s ease}.app-header{background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);color:var(--white);padding:var(--space-6) var(--space-8);border-radius:0 0 var(--radius-xl) var(--radius-xl);margin-bottom:var(--space-8);box-shadow:var(--shadow-lg);position:relative;overflow:hidden}.app-header:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,#ffffff1a,#ffffff0d);pointer-events:none}.header-content{display:flex;justify-content:space-between;align-items:center;position:relative;z-index:1}.header-left{display:flex;flex-direction:column;gap:var(--space-1)}.header-right{display:flex;align-items:center;gap:var(--space-4)}.back-button{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:var(--white);border:1px solid rgba(255,255,255,.2);padding:var(--space-3) var(--space-6);border-radius:var(--radius-xl);font-weight:500;font-size:.875rem;cursor:pointer;transition:all .3s ease;display:inline-flex;align-items:center;gap:var(--space-2);text-decoration:none;box-shadow:var(--shadow-md)}.back-button:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 100%)}.back-button:active{transform:translateY(0)}.back-button .arrow{font-size:1.1rem;transition:transform .3s ease}.back-button:hover .arrow{transform:translate(-2px)}@keyframes float{0%,to{transform:translateY(0) rotate(0)}50%{transform:translateY(-20px) rotate(180deg)}}.app-title{font-size:2rem;font-weight:700;margin:0;text-shadow:0 2px 4px rgba(0,0,0,.1)}.app-subtitle{font-size:1rem;font-weight:400;opacity:.9;margin:0}.main-content{flex:1;padding:var(--space-6) var(--space-8);max-width:1200px;margin:0 auto;width:100%}.input-column,.results-column{display:flex;flex-direction:column;gap:var(--space-6)}.welcome-section{display:flex;align-items:center;justify-content:center;min-height:400px}.welcome-card{background:var(--bg-card);border-radius:var(--radius-xl);padding:var(--space-8);box-shadow:var(--shadow-lg);border:1px solid var(--border-color);text-align:center;max-width:600px;width:100%}.welcome-card h2{font-size:1.5rem;font-weight:600;margin-bottom:var(--space-4);color:var(--text-primary)}.welcome-card p{font-size:1.1rem;color:var(--text-secondary);margin-bottom:var(--space-6)}.welcome-steps{display:flex;flex-direction:column;gap:var(--space-4)}.step{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-4);background:var(--bg-card-light);border-radius:var(--radius-md);border:1px solid var(--border-color);transition:all .3s ease}.step-number{background:var(--primary-gradient);color:var(--white);width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:.875rem;flex-shrink:0}.input-section{background:var(--bg-card);border-radius:var(--radius-xl);padding:var(--space-8);box-shadow:var(--shadow-lg);border:1px solid var(--border-color);transition:all .3s ease}.section-title{font-size:1.5rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--space-6);display:flex;align-items:center;gap:var(--space-3)}.section-title:before{content:"";width:4px;height:24px;background:var(--primary-gradient);border-radius:var(--radius-sm)}.form-group{margin-bottom:var(--space-6)}.form-label{display:block;font-weight:500;color:var(--text-secondary);margin-bottom:var(--space-2);font-size:.95rem}.form-input{width:100%;padding:var(--space-4);border:2px solid var(--border-color);border-radius:var(--radius-lg);font-size:1rem;transition:all .3s ease;background:var(--bg-card-light);color:var(--text-primary)}.form-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #667eea1a;transform:translateY(-1px)}.form-input::placeholder{color:var(--text-muted)}.btn{padding:8px 16px;border:none;border-radius:4px;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s ease;display:inline-flex;align-items:center;gap:6px;text-decoration:none;min-height:36px}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover{background-color:var(--primary-dark);transform:translateY(-1px);box-shadow:0 2px 4px #3b82f64d}.btn-success{background-color:var(--success);color:#fff}.btn-success:hover{background-color:var(--success-dark);transform:translateY(-1px);box-shadow:0 2px 4px #10b9814d}.btn-danger{background-color:var(--danger);color:#fff}.btn-danger:hover{background-color:var(--danger-dark);transform:translateY(-1px);box-shadow:0 2px 4px #ef44444d}.btn-outline{background-color:transparent;color:var(--danger);border:1px solid var(--danger)}.btn-outline:hover{background-color:var(--danger);color:#fff;transform:translateY(-1px);box-shadow:0 2px 4px #ef44444d}.btn-group{display:flex;gap:8px;align-items:center}.btn-group-2{display:grid;grid-template-columns:1fr 1fr;gap:8px}.btn svg{width:16px;height:16px}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none!important;box-shadow:none!important}.data-table{background:var(--bg-card-light);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);border:1px solid var(--border-color);transition:all .3s ease}.table-header{background:var(--bg-card);padding:var(--space-4);border-bottom:1px solid var(--border-color)}.table-row{display:grid;grid-template-columns:1fr 1fr auto;gap:var(--space-4);padding:var(--space-4);border-bottom:1px solid var(--border-color);transition:background-color .2s ease;background:#fff}.table-row:hover{background:#fff}.table-row:last-child{border-bottom:none}.table-cell{display:flex;align-items:center;gap:var(--space-2)}.table-input{width:100%;padding:var(--space-3);border:1px solid var(--border-color);border-radius:var(--radius-md);font-size:.95rem;transition:all .2s ease;background:var(--bg-card-light);color:var(--text-primary)}.table-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px #667eea1a}.results-section{display:flex;flex-direction:column;gap:var(--space-6)}.chart-container{background:var(--bg-card);border-radius:var(--radius-xl);padding:var(--space-6);box-shadow:var(--shadow-md);border:1px solid var(--border-color);margin-bottom:var(--space-6);transition:all .3s ease}.chart-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-6)}.chart-title{font-size:1.25rem;font-weight:600;color:var(--text-primary)}.chart-type-selector{display:flex;gap:var(--space-2);background:var(--bg-card-light);padding:var(--space-1);border-radius:var(--radius-lg)}.chart-type-btn{padding:var(--space-2) var(--space-4);border:none;border-radius:var(--radius-md);background:transparent;color:var(--text-secondary);font-weight:500;cursor:pointer;transition:all .2s ease}.chart-type-btn.active{background:var(--primary);color:var(--white);box-shadow:var(--shadow-sm)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--space-4);margin-bottom:var(--space-6)}.stat-card{background:var(--bg-card);border-radius:var(--radius-lg);padding:var(--space-6);box-shadow:var(--shadow-md);border:1px solid var(--border-color);transition:transform .2s ease}.stat-card:hover{transform:translateY(-2px)}.stat-title{font-size:.875rem;font-weight:500;color:var(--text-muted);margin-bottom:var(--space-2);text-transform:uppercase;letter-spacing:.5px}.stat-value{font-size:2rem;font-weight:700;color:var(--text-primary);margin-bottom:var(--space-1)}.stat-change{font-size:.875rem;font-weight:500;display:flex;align-items:center;gap:var(--space-1)}.stat-change.positive{color:#667eea}.stat-change.negative{color:#4facfe}.results-table{background:var(--bg-card-light);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);border:1px solid var(--border-color);margin-bottom:var(--space-6);transition:all .3s ease}.results-table-header{background:var(--bg-card);padding:var(--space-4);font-weight:600;color:var(--text-secondary);border-bottom:1px solid var(--border-color)}.results-table-row{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;gap:var(--space-4);padding:var(--space-4);border-bottom:1px solid var(--border-color)}.results-table-row:last-child{border-bottom:none}.results-table-cell{font-size:.95rem;color:var(--text-secondary)}.results-table-cell.highlight{font-weight:600;color:var(--primary)}.toggle-section{margin-bottom:var(--space-6)}.toggle-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-4);background:var(--bg-card-light);border-radius:var(--radius-lg);cursor:pointer;transition:background-color .2s ease}.toggle-header:hover{background:var(--bg-card)}.toggle-title{font-weight:600;color:var(--text-primary)}.toggle-icon{transition:transform .2s ease}.toggle-icon.rotated{transform:rotate(180deg)}.toggle-content{padding:var(--space-4);background:var(--bg-card);border-radius:0 0 var(--radius-lg) var(--radius-lg);border:1px solid var(--border-color);border-top:none}.insights-section{background:linear-gradient(135deg,#667eea,#764ba2);color:var(--white);border-radius:var(--radius-xl);padding:var(--space-8);margin-top:var(--space-6);position:relative;overflow:hidden}.insights-section:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,255,255,.05) 0%,transparent 50%);pointer-events:none}.insights-title{font-size:1.5rem;font-weight:600;margin-bottom:var(--space-4);position:relative;z-index:1}.insights-list{list-style:none;position:relative;z-index:1}.insights-list li{margin-bottom:var(--space-3);padding-left:var(--space-4);position:relative}.insights-list li:before{content:"💡";position:absolute;left:0;top:0}@media (max-width: 1200px){.main-content{grid-template-columns:1fr;gap:var(--space-6)}}.desktop-nav{display:flex}.mobile-menu-btn{display:none}@media (max-width: 768px){.desktop-nav{display:none!important}.mobile-menu-btn,.mobile-menu-overlay{display:block!important}.app-header{padding:1rem!important}.app-header>div{flex-direction:column!important;align-items:stretch!important;gap:1rem!important;max-width:100%!important}.app-header>div>div:first-child{flex-direction:column!important;align-items:center!important;gap:.5rem!important;text-align:center!important}.app-header>div>div:first-child img{width:40px!important;height:40px!important}.app-title{font-size:1.2rem!important;line-height:1.2!important;text-align:center!important;margin-bottom:0!important}.app-subtitle{font-size:.7rem!important;text-align:center!important;line-height:1.3!important}.app-header nav{flex-direction:row!important;justify-content:center!important;flex-wrap:wrap;gap:.75rem!important;width:100%!important}.app-header nav>button{font-size:.8rem!important;padding:6px 12px!important;flex:1!important;min-width:0!important;max-width:120px!important}.app-header .logout-button{padding:8px 16px!important;font-size:.8rem!important;flex:none!important;min-width:80px!important}.app-header nav>div[style*="width: 1px"]{display:none!important}.session-timer{top:10px!important;right:10px!important;padding:8px 12px!important;min-width:120px!important;border-radius:8px!important}.session-timer>div:first-child{font-size:14px!important}.session-timer>div:last-child>div:first-child{font-size:12px!important}.session-timer>div:last-child>div:last-child{font-size:11px!important}.main-content{padding:1rem!important}div[style*="gridTemplateColumns: repeat(auto-fit, minmax(600px, 1fr))"]{grid-template-columns:1fr!important;gap:1rem!important}div[style*=grid-template-columns]{grid-template-columns:1fr!important}div[style*="display: flex"][style*="gap: 1.5rem"][style*="justifyContent: center"]{flex-direction:column!important;gap:1rem!important;align-items:center!important}button[style*="minWidth: 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1rem"]{flex-direction:column!important;align-items:center!important;width:100%!important;max-width:400px!important;margin:0 auto!important}section[id=features] div[style*=grid-template-columns]{grid-template-columns:1fr!important;gap:1.5rem!important}section div[style*="grid-template-columns: repeat(auto-fit, minmax(140px, 1fr))"]{grid-template-columns:repeat(2,1fr)!important;gap:1rem!important;padding:0 .5rem!important}section div[style*="grid-template-columns: repeat(auto-fit, minmax(300px, 1fr))"]{grid-template-columns:1fr!important;gap:1.5rem!important}section[id=about] div[style*="grid-template-columns: repeat(auto-fit, minmax(300px, 1fr))"]{grid-template-columns:1fr!important;gap:1.5rem!important}section[style*="background: linear-gradient(135deg, #667eea 0%, #764ba2 100%)"]{padding:4rem 1rem!important}section[style*="background: linear-gradient(135deg, #667eea 0%, #764ba2 100%)"] div[style*="display: flex"]{flex-direction:column!important;gap:1rem!important;width:100%!important;max-width:400px!important;margin:0 auto!important}footer div[style*="display: flex"][style*="justify-content: space-between"]{flex-direction:column!important;gap:1rem!important;text-align:center!important}footer div[style*="display: flex"][style*="justify-content: space-between"]:last-child{flex-direction:column!important;align-items:center!important}.app-container{padding:var(--space-2)}.app-header{padding:var(--space-4) var(--space-6);border-radius:0 0 var(--radius-lg) var(--radius-lg);margin-bottom:var(--space-6)}.main-content{padding:var(--space-4) var(--space-6)}.app-title{font-size:1.5rem}.input-section,.results-section{margin-bottom:var(--space-6)}.table-row{grid-template-columns:1fr 1fr auto!important;gap:.5rem!important;padding:.75rem!important}.table-input{font-size:.85rem!important;padding:.5rem!important}@media (max-width: 600px){.data-table{overflow-x:auto!important;-webkit-overflow-scrolling:touch!important;border-radius:8px!important;border:1px solid #e5e7eb!important;scrollbar-width:none!important;-ms-overflow-style:none!important;margin:0 -.5rem!important}.data-table::-webkit-scrollbar{display:none!important}.table-header>div,.table-row{min-width:350px!important;grid-template-columns:100px 120px 70px!important;gap:.5rem!important}.table-input{font-size:.8rem!important;padding:.4rem .6rem!important;min-width:0!important;width:100%!important}.table-header{background:#f8fafc!important;border-bottom:2px solid #e5e7eb!important;font-size:.75rem!important;font-weight:600!important}.table-row{border-bottom:1px solid #f1f5f9!important;background:#fff!important}.table-row:last-child{border-bottom:none!important}.table-cell>span{font-size:.7rem!important}}.results-table-row{grid-template-columns:repeat(2,1fr)!important;gap:.5rem!important;padding:.75rem!important}.table-header>div{grid-template-columns:1fr 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var(--primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes bounce{0%,20%,50%,80%,to{transform:translateY(0)}40%{transform:translateY(-10px)}60%{transform:translateY(-5px)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.success-message{background:var(--success-gradient);color:var(--gray-800);padding:var(--space-4);border-radius:var(--radius-lg);margin-bottom:var(--space-4);display:flex;align-items:center;gap:var(--space-2)}.error-message{background:linear-gradient(135deg,#ff9a9e,#fecfef);color:var(--gray-800);padding:var(--space-4);border-radius:var(--radius-lg);margin-bottom:var(--space-4);display:flex;align-items:center;gap:var(--space-2)}@media print{.app-container{background:#fff;padding:0}.app-header,.input-section,.btn{display:none}.results-section{box-shadow:none;border:none;padding:0}.chart-container,.stat-card{box-shadow:none;border:1px solid #000}}#root{max-width:1280px;margin:0 auto;padding:2rem;text-align:center}.app{min-height:100vh;display:flex;flex-direction:column}@keyframes shine{0%{left:-100%}50%{left:100%}to{left:100%}}@media (max-width: 768px){.desktop-nav{display:none!important}.mobile-menu-btn,.mobile-menu-overlay{display:block!important}}@media (min-width: 769px){.desktop-nav{display:flex!important}.mobile-menu-btn,.mobile-menu-overlay{display:none!important}}@media (max-width: 1200px){.desktop-nav .user-email-display span{max-width:120px!important}}@media (max-width: 992px){.desktop-nav .user-email-display span{max-width:100px!important}}.logo{height:6em;padding:1.5em;will-change:filter;transition:filter .3s}.logo:hover{filter:drop-shadow(0 0 2em #646cffaa)}.logo.react:hover{filter:drop-shadow(0 0 2em #61dafbaa)}@keyframes logo-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (prefers-reduced-motion: no-preference){a:nth-of-type(2) .logo{animation:logo-spin infinite 20s linear}}.card{padding:2em}.read-the-docs{color:#888}