html,body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6;background-color:#f9fafb;color:#374151;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.loading-fallback{display:flex;align-items:center;justify-content:center;min-height:50vh;padding:2rem;color:#6b7280;font-style:italic}.error-boundary{min-height:50vh;display:flex;align-items:center;justify-content:center;padding:2rem}:root{--primary-blue: #1e40af;--primary-blue-light: #3b82f6;--primary-blue-dark: #1e3a8a;--primary-blue-50: #eff6ff;--primary-blue-100: #dbeafe;--primary-blue-200: #bfdbfe;--secondary-indigo: #6366f1;--secondary-purple: #8b5cf6;--secondary-emerald: #10b981;--gray-25: #fcfcfd;--gray-50: #f9fafb;--gray-100: #f2f4f7;--gray-200: #eaecf0;--gray-300: #d0d5dd;--gray-400: #98a2b3;--gray-500: #667085;--gray-600: #475467;--gray-700: #344054;--gray-800: #1d2939;--gray-900: #101828;--success-green: #12b76a;--success-green-light: #ecfdf3;--warning-yellow: #f79009;--warning-yellow-light: #fffaeb;--error-red: #f04438;--error-red-light: #fef3f2;--shadow-xs: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-sm: 0 1px 3px 0 rgb(0 0 0 / .1), 0 1px 2px -1px rgb(0 0 0 / .1);--shadow: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-md: 0 8px 8px -4px rgb(0 0 0 / .1), 0 4px 6px -2px rgb(0 0 0 / .05);--shadow-lg: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .04);--shadow-xl: 0 25px 50px -12px rgb(0 0 0 / .25);--radius-sm: .375rem;--radius: .5rem;--radius-md: .75rem;--radius-lg: 1rem;--radius-xl: 1.5rem;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "Monaco", "Cascadia Code", monospace;--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;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition: .2s cubic-bezier(.4, 0, .2, 1);--transition-slow: .3s cubic-bezier(.4, 0, .2, 1);--white: #ffffff;--black: #000000;--text-dark: #111827;--border-radius: .5rem;--border-radius-lg: .75rem;--border-radius-xl: 1rem}*{box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth}body{margin:0;padding:0;font-family:var(--font-sans);font-weight:400;line-height:1.6;color:var(--gray-700);background-color:var(--gray-50);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4,h5,h6{margin:0 0 1rem;font-weight:600;line-height:1.2;color:var(--gray-900)}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}h4{font-size:1.25rem}h5{font-size:1.125rem}h6{font-size:1rem}p{margin:0 0 1rem}a{color:var(--primary-blue);text-decoration:none;transition:var(--transition)}a:hover{color:var(--primary-blue-dark);text-decoration:underline}.app{min-height:100vh;display:flex;flex-direction:column}.main-content{flex:1;padding:2rem 0}.header-enhanced{position:fixed;top:0;left:0;right:0;z-index:1000;background:#fffffff2;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid rgba(229,231,235,.5);transition:all .3s cubic-bezier(.4,0,.2,1)}.header-enhanced.scrolled{background:#fffffffa;box-shadow:var(--shadow-lg);border-bottom-color:#e5e7ebcc}.header-container{max-width:1280px;margin:0 auto;padding:0 var(--space-4)}.header-content{display:flex;align-items:center;justify-content:space-between;height:4rem;position:relative}.logo-section{display:flex;align-items:center;flex-shrink:0;z-index:10}.logo-enhanced{display:flex;align-items:center;gap:var(--space-3);text-decoration:none;color:inherit;transition:var(--transition)}.logo-enhanced:hover{text-decoration:none;transform:translateY(-1px)}.logo-icon-wrapper{position:relative;display:flex;align-items:center;justify-content:center}.logo-icon{width:2rem;height:2rem;transition:var(--transition)}.logo-enhanced:hover .logo-icon{transform:rotate(-5deg) scale(1.1)}.logo-text-wrapper{display:flex;flex-direction:column;align-items:flex-start}.logo-title{font-size:1.25rem;font-weight:700;margin:0;background:linear-gradient(135deg,var(--gray-900),var(--primary-blue));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;transition:var(--transition)}.demo-badge{display:flex;align-items:center;gap:var(--space-1);background:#3b82f61a;border:1px solid rgba(59,130,246,.2);border-radius:9999px;padding:.125rem var(--space-2);margin-top:.125rem}.demo-icon{color:var(--primary-blue);animation:pulse 2s infinite}.demo-text{font-size:.625rem;font-weight:600;color:var(--primary-blue);letter-spacing:.05em}.nav-desktop{display:none;align-items:center;gap:var(--space-1)}.nav-link-enhanced{position:relative;display:flex;align-items:center;gap:var(--space-2);padding:var(--space-3) var(--space-4);border-radius:var(--radius-md);font-weight:500;color:var(--gray-500);text-decoration:none;transition:var(--transition);overflow:hidden}.nav-link-enhanced:hover{color:var(--primary-blue);background:#3b82f60d;text-decoration:none;transform:translateY(-1px)}.nav-link-enhanced.active{color:var(--primary-blue);background:#3b82f61a}.nav-link-enhanced .nav-icon{transition:var(--transition)}.nav-link-enhanced:hover .nav-icon{transform:scale(1.1)}.nav-link-enhanced .nav-label{font-size:.875rem;font-weight:500}.header-actions{display:flex;align-items:center;gap:var(--space-4);position:relative;z-index:10}.user-menu-container{position:relative}.user-menu-trigger{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-2) var(--space-3);border:1px solid rgba(229,231,235,.5);border-radius:var(--radius-md);background:#fffc;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:var(--transition);cursor:pointer}.user-menu-trigger:hover{border-color:#3b82f64d;background:#ffffffe6;transform:translateY(-1px);box-shadow:var(--shadow)}.user-avatar{width:1.75rem;height:1.75rem;border-radius:50%;background:linear-gradient(135deg,var(--primary-blue),var(--primary-blue-dark));display:flex;align-items:center;justify-content:center;flex-shrink:0;color:#fff;font-size:.75rem;font-weight:600;text-shadow:0 1px 2px rgba(0,0,0,.1)}.user-info{display:none;flex-direction:column;align-items:flex-start}.user-name{font-size:.875rem;font-weight:500;color:var(--gray-700);line-height:1.2}.user-status{font-size:.75rem;color:var(--success-green);line-height:1}.chevron-icon{color:var(--gray-400);transition:transform var(--transition)}.chevron-icon.rotated{transform:rotate(180deg)}.user-dropdown{position:absolute;top:calc(100% + var(--space-2));right:0;width:20rem;background:#fffffffa;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid rgba(229,231,235,.5);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);overflow:hidden;animation:dropdownIn .2s ease;z-index:50}.guest-actions{display:flex;align-items:center;gap:var(--space-3)}.btn-signin{display:flex;align-items:center;gap:var(--space-2);padding:.625rem var(--space-4);background:linear-gradient(135deg,var(--primary-blue),var(--primary-blue-dark));color:#fff;border:none;border-radius:var(--radius-md);font-size:.875rem;font-weight:500;cursor:pointer;transition:var(--transition);box-shadow:0 2px 4px #3b82f633}.btn-signin:hover{transform:translateY(-1px);box-shadow:0 4px 12px #3b82f64d;background:linear-gradient(135deg,var(--primary-blue-dark),#1e3a8a)}.mobile-menu-button{display:flex;align-items:center;justify-content:center;width:2.5rem;height:2.5rem;border:1px solid rgba(229,231,235,.5);border-radius:var(--radius);background:#fffc;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);cursor:pointer;transition:var(--transition)}.mobile-menu-button:hover{border-color:#3b82f64d;background:#ffffffe6;transform:translateY(-1px)}.hamburger-icon{display:flex;flex-direction:column;gap:.25rem;width:1rem;height:.75rem}.hamburger-line{width:100%;height:2px;background:var(--gray-700);border-radius:1px;transition:var(--transition);transform-origin:center}.hamburger-line.line-1-active{transform:rotate(45deg) translate(.25rem,.25rem)}.hamburger-line.line-2-active{opacity:0;transform:scaleX(0)}.hamburger-line.line-3-active{transform:rotate(-45deg) translate(.25rem,-.25rem)}.mobile-menu-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:999;opacity:0;visibility:hidden;transition:all .3s ease}.mobile-menu-overlay.active{opacity:1;visibility:visible}.mobile-menu-backdrop{position:absolute;top:0;right:0;bottom:0;left:0;background:#0006;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);opacity:0;transition:opacity .3s ease}.mobile-menu-overlay.active .mobile-menu-backdrop{opacity:1}.mobile-menu-container{position:absolute;top:4rem;left:var(--space-4);right:var(--space-4);max-height:calc(100vh - 5rem);background:#fffffffa;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid rgba(229,231,235,.5);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);overflow:hidden;transform:translateY(-1rem) scale(.95);transition:all .3s cubic-bezier(.34,1.56,.64,1)}.mobile-menu-overlay.active .mobile-menu-container{transform:translateY(0) scale(1)}.mobile-menu-header{padding:var(--space-6);border-bottom:1px solid rgba(229,231,235,.3);background:#f9fafb80}.mobile-nav{padding:var(--space-4)}.mobile-nav-item{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-4);margin-bottom:var(--space-1);border-radius:var(--radius-lg);text-decoration:none;color:var(--gray-700);font-weight:500;transition:var(--transition);animation:slideInMobile .4s ease both}.mobile-nav-item:hover{background:#f3f4f6cc;color:var(--gray-900);text-decoration:none;transform:translate(.25rem)}.mobile-nav-item.active{background:#3b82f61a;color:var(--primary-blue)}.mobile-nav-icon{display:flex;align-items:center;justify-content:center;width:2.5rem;height:2.5rem;border-radius:var(--radius-md);background:#f3f4f6cc;color:var(--gray-500);transition:var(--transition)}.mobile-nav-item.active .mobile-nav-icon{background:#3b82f633;color:var(--primary-blue)}.mobile-nav-label{flex:1;font-size:1rem;font-weight:500}.mobile-menu-footer{padding:var(--space-4) var(--space-6) var(--space-6);border-top:1px solid rgba(229,231,235,.3);background:#f9fafb80}.mobile-signin-btn{display:flex;align-items:center;justify-content:center;gap:var(--space-2);width:100%;padding:.875rem;background:linear-gradient(135deg,var(--primary-blue),var(--primary-blue-dark));color:#fff;border:none;border-radius:var(--radius-lg);font-size:1rem;font-weight:600;cursor:pointer;transition:var(--transition)}.mobile-signin-btn:hover{transform:translateY(-1px);box-shadow:0 8px 25px #3b82f64d}.header-spacer{height:4rem}@media (min-width: 768px){.nav-desktop{display:flex}.mobile-menu-button{display:none}.user-info{display:flex}.header-container{padding:0 var(--space-6)}}@media (min-width: 1024px){.header-container{padding:0 var(--space-8)}.nav-link-enhanced{padding:var(--space-3) var(--space-5)}.user-menu-trigger{padding:.625rem var(--space-4)}}@media (min-width: 1280px){.header-container{padding:0 var(--space-10)}}@media (max-width: 480px){.header-container{padding:0 var(--space-3)}.logo-title{font-size:1.125rem}.mobile-menu-container{left:var(--space-3);right:var(--space-3)}.mobile-nav-item{padding:.875rem}.mobile-nav-icon{width:2.25rem;height:2.25rem}}@keyframes dropdownIn{0%{opacity:0;transform:translateY(-.5rem) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes slideInMobile{0%{opacity:0;transform:translate(-1rem)}to{opacity:1;transform:translate(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.mobile-nav-item:nth-child(1){animation-delay:0ms}.mobile-nav-item:nth-child(2){animation-delay:50ms}.mobile-nav-item:nth-child(3){animation-delay:.1s}.mobile-nav-item:nth-child(4){animation-delay:.15s}.form-group{margin-bottom:var(--space-6)}.form-label{display:block;margin-bottom:var(--space-2);font-weight:500;color:var(--gray-700);font-size:.875rem}.form-input,.form-textarea,.form-select{width:100%;padding:var(--space-3);border:1px solid var(--gray-300);border-radius:var(--radius-md);font-size:.875rem;transition:var(--transition);background:#fff}.form-input:focus,.form-textarea:focus,.form-select:focus{outline:none;border-color:var(--primary-blue);box-shadow:0 0 0 3px #3b82f61a}.form-textarea{resize:vertical;min-height:120px}.form-select{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");background-position:right var(--space-2) center;background-repeat:no-repeat;background-size:1.5em 1.5em;padding-right:2.5rem;-webkit-appearance:none;-moz-appearance:none;appearance:none}.form-error{margin-top:var(--space-2);font-size:.75rem;color:var(--error-red)}.card{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden;border:1px solid var(--gray-200);transition:var(--transition)}.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.card-header{padding:var(--space-6);border-bottom:1px solid var(--gray-200);background:var(--gray-50)}.card-body{padding:var(--space-6)}.card-footer{padding:var(--space-4) var(--space-6);border-top:1px solid var(--gray-200);background:var(--gray-50)}.alert{padding:1.25rem 1.5rem;border-radius:.5rem;margin:2rem 0;border:1px solid #fca5a5;background:#fef3f2;color:#991b1b;font-size:1.1rem}.alert-error{border-color:#f04438;background:#fef3f2;color:#b91c1c}.loading{display:flex;align-items:center;justify-content:center;padding:var(--space-8)}.spinner{width:32px;height:32px;border:3px solid var(--gray-300);border-top:3px solid var(--primary-blue);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.progress{width:100%;height:8px;background:var(--gray-200);border-radius:4px;overflow:hidden}.progress-bar{height:100%;background:linear-gradient(90deg,var(--primary-blue),var(--primary-blue-light));transition:width .3s ease}.stepper-btn{display:flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-4);border:none;background:var(--gray-100);color:var(--gray-600);font-size:.875rem;font-weight:500;border-radius:var(--radius-md);cursor:pointer;transition:var(--transition);position:relative;overflow:hidden}.stepper-btn:hover{background:var(--gray-200);color:var(--gray-700);transform:translateY(-1px)}.stepper-btn.active{background:linear-gradient(135deg,var(--primary-blue),var(--primary-blue-dark));color:#fff;box-shadow:var(--shadow-md)}.stepper-btn.active:hover{background:linear-gradient(135deg,var(--primary-blue-dark),#1e3a8a);transform:translateY(-1px)}.stepper-btn:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transform:translate(-100%);transition:transform .6s ease}.stepper-btn:hover:before{transform:translate(100%)}.property-input{max-width:800px;margin:0 auto;padding:var(--space-6)}.url-input-section,.manual-input-section{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);padding:var(--space-6);margin-bottom:var(--space-6)}.file-upload-area{border:2px dashed var(--gray-300);border-radius:var(--radius-lg);padding:var(--space-8);text-align:center;transition:var(--transition);cursor:pointer}.file-upload-area:hover,.file-upload-area.dragover{border-color:var(--primary-blue);background:var(--primary-blue-50)}.analysis-selector{max-width:1200px;margin:0 auto;padding:var(--space-8) var(--space-4)}.analysis-types{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:var(--space-6);margin-bottom:var(--space-8)}.analysis-type{background:#fff;border:2px solid var(--gray-200);border-radius:var(--radius-lg);padding:var(--space-6);cursor:pointer;transition:var(--transition);position:relative}.analysis-type:hover{border-color:var(--primary-blue-light);box-shadow:var(--shadow-lg);transform:translateY(-2px)}.analysis-type.selected{border-color:var(--primary-blue);background:linear-gradient(135deg,#3b82f60d,#1e40af0d);box-shadow:var(--shadow-xl)}.progress-tracker{max-width:800px;margin:0 auto;padding:var(--space-8);background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.progress-step{display:flex;align-items:flex-start;gap:var(--space-4);padding:var(--space-6);border-radius:var(--radius-lg);margin-bottom:var(--space-4);transition:var(--transition);border:1px solid transparent}.progress-step.completed{background:var(--success-green-light);border-color:var(--success-green)}.progress-step.active{background:var(--primary-blue-50);border-color:var(--primary-blue);box-shadow:var(--shadow-sm)}.progress-step.pending{background:var(--gray-50);border-color:var(--gray-200)}.step-indicator{display:flex;align-items:center;justify-content:center;width:2.5rem;height:2.5rem;border-radius:50%;flex-shrink:0;margin-top:.25rem}.progress-step.completed .step-indicator{background:var(--success-green);color:#fff}.progress-step.active .step-indicator{background:var(--primary-blue);color:#fff}.progress-step.pending .step-indicator{background:var(--gray-300);color:var(--gray-600)}.report-library{max-width:1200px;margin:0 auto;padding:0 var(--space-4)}.reports-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:var(--space-6)}.report-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition)}.report-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.report-thumbnail{position:relative;height:200px;overflow:hidden;background:var(--gray-100)}.thumbnail-image{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-slow)}.report-card:hover .thumbnail-image{transform:scale(1.05)}.report-score{position:absolute;top:var(--space-3);right:var(--space-3);width:3rem;height:3rem;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.875rem;box-shadow:var(--shadow-md);color:#fff}.report-score.score-high{background:linear-gradient(135deg,var(--success-green),#059669)}.report-score.score-medium{background:linear-gradient(135deg,var(--warning-yellow),#d97706)}.report-score.score-low{background:linear-gradient(135deg,var(--error-red),#dc2626)}.report-content{padding:var(--space-6)}.report-actions{display:flex;gap:var(--space-3);flex-wrap:wrap}.report-viewer{max-width:1200px;margin:0 auto;padding:0 var(--space-4);background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.report-header{display:flex;justify-content:space-between;align-items:flex-start;padding:var(--space-8);border-bottom:1px solid var(--gray-200);background:linear-gradient(135deg,var(--primary-blue-50) 0%,#f8fafc 100%);border-radius:var(--radius-lg) var(--radius-lg) 0 0}.report-content{display:flex;min-height:600px}.report-nav{width:280px;background:var(--gray-50);border-right:1px solid var(--gray-200);padding:var(--space-6) 0}.nav-item{display:flex;align-items:center;gap:var(--space-3);width:100%;padding:var(--space-4) var(--space-6);border:none;background:none;color:var(--gray-700);font-size:1rem;font-weight:500;text-align:left;cursor:pointer;transition:var(--transition);border-left:3px solid 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