:root{--background:#fff;--foreground:#0f172a;--card:#f8fafc;--card-foreground:#0f172a;--popover:#fff;--popover-foreground:#0f172a;--primary:#3b82f6;--primary-foreground:#fff;--secondary:#f1f5f9;--secondary-foreground:#0f172a;--muted:#f1f5f9;--muted-foreground:#64748b;--accent:#3b82f6;--accent-foreground:#fff;--destructive:#ef4444;--destructive-foreground:#fff;--border:#e2e8f0;--input:#fff;--ring:#3b82f6;--card-background:#f8fafc;--accent-dark:#2563eb;--accent-rgb:59,130,246}*{margin:0;padding:0;box-sizing:border-box;font-family:Google Sans,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}html{--color-scheme:light;scroll-behavior:smooth}body{color:var(--foreground);background:linear-gradient(135deg,#fff,#f8fafc 50%,#f1f5f9);min-height:100vh;line-height:1.5;-webkit-font-smoothing:antialiased}body:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background-image:radial-gradient(circle at 20% 80%,rgba(59,130,246,.05) 0,transparent 50%),radial-gradient(circle at 80% 20%,rgba(59,130,246,.03) 0,transparent 50%),radial-gradient(circle at 40% 40%,rgba(59,130,246,.02) 0,transparent 50%);pointer-events:none;z-index:-1}.container{padding:0 16px}.container,.content{max-width:1200px;margin:0 auto}.content{min-height:100vh;padding:20px 16px 40px;position:relative;z-index:1}.header{position:-webkit-sticky;position:sticky;top:0;z-index:100;background:hsla(0,0%,100%,.95);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);padding:12px 0;margin-bottom:20px}.nav{max-width:1200px;margin:0 auto;padding:0 16px;display:flex;justify-content:space-between;align-items:center}.logo{font-size:1.5rem;font-weight:700;color:var(--foreground);text-decoration:none;letter-spacing:-.5px}.auth-section{display:flex;gap:12px;align-items:center}.auth-btn,.logout-btn{padding:8px 16px;border-radius:8px;text-decoration:none;font-size:.9rem;font-weight:500;transition:all .2s ease;border:none;cursor:pointer;display:inline-flex;align-items:center;gap:6px;height:40px}.user-info,.user-menu,.user-profile{display:flex;align-items:center;gap:8px;color:var(--foreground);height:40px;text-decoration:none}.user-avatar,.user-profile img{width:28px!important;height:28px!important;border-radius:50%;object-fit:cover}.user-name{font-size:.9rem;font-weight:500;max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.user-menu{gap:12px}.auth-btn.primary{background:var(--primary);color:var(--primary-foreground);box-shadow:0 2px 8px rgba(var(--accent-rgb),.25)}.auth-btn.primary:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 4px 12px rgba(var(--accent-rgb),.35)}.auth-btn.secondary{background:transparent;color:var(--foreground);border:1px solid var(--border)}.auth-btn.secondary:hover{background:var(--muted)}.logout-btn{background:var(--destructive);color:var(--destructive-foreground)}.logout-btn:hover{background:#dc2626}.user-profile{display:flex;align-items:center;gap:8px;color:var(--foreground)}.hero-section{text-align:center;padding:40px 0 60px;position:relative}.heading{font-size:3rem;font-weight:800;color:var(--foreground);margin-bottom:16px;letter-spacing:-1px;line-height:1.1}.heading .text-gradient{background:linear-gradient(135deg,var(--foreground),var(--muted-foreground));background-clip:text;-webkit-background-clip:text;-webkit-text-fill-color:transparent}.wave-emoji{background:none!important;-webkit-background-clip:unset!important;-webkit-text-fill-color:unset!important;background-clip:unset!important;font-size:3rem!important;display:inline-block!important;margin-left:.3em!important;vertical-align:middle!important;line-height:1!important;filter:drop-shadow(0 2px 8px rgba(255,165,0,.4));animation:wave 2.5s ease-in-out infinite;transform-origin:70% 70%;z-index:10;position:relative}.subtitle{font-size:1.25rem;margin-bottom:12px;font-weight:500}.description,.subtitle{color:var(--muted-foreground)}.description{font-size:1rem;max-width:600px;margin:0 auto;line-height:1.6}.features{margin:60px 0;display:flex;flex-direction:column;gap:40px}.feature-buttons{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));grid-gap:20px;gap:20px;margin-bottom:40px;justify-items:center}.feature-button{display:flex;flex-direction:column;align-items:center;justify-content:center;width:200px;height:200px;padding:20px;background:var(--card-background);border:1px solid var(--border);border-radius:16px;text-decoration:none;color:var(--foreground);transition:all .3s ease;position:relative;overflow:hidden;aspect-ratio:1}.feature-button:hover{transform:translateY(-4px);box-shadow:0 8px 25px rgba(var(--accent-rgb),.15);border-color:var(--accent)}.feature-button:before{content:"";position:absolute;top:0;left:0;width:100%;height:2px;background:linear-gradient(90deg,var(--accent),var(--accent-dark));transform:scaleX(0);transition:transform .3s ease}.feature-button:hover:before{transform:scaleX(1)}.feature-icon{font-size:3rem;margin-bottom:16px;filter:drop-shadow(0 2px 4px rgba(0,0,0,.1))}.feature-button h2{font-size:1.25rem;font-weight:600;text-align:center;margin:0;line-height:1.3}.feature-descriptions{display:grid;grid-gap:24px;gap:24px}.feature-desc{padding:24px 0;background:none;border:none;border-radius:0}.desc-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}.desc-icon{font-size:1.5rem}.desc-header h3{font-size:1.1rem;font-weight:600;color:var(--foreground);margin:0}.feature-tag{background:none;color:var(--muted-foreground);padding:4px 0;font-size:.85rem;font-weight:500;text-transform:none;letter-spacing:normal;margin-left:auto;display:inline-block;opacity:.8}.desc-greeting{color:var(--accent);font-size:.95rem;font-style:italic;margin-bottom:8px;font-weight:500}.feature-desc p{color:var(--muted-foreground);font-size:.95rem;line-height:1.6;margin:0}.cta-section{text-align:center;padding:60px 0;margin-top:40px}.cta-section h2{font-size:2rem;font-weight:700;color:var(--foreground);margin-bottom:12px}.cta-section p{font-size:1rem;color:var(--muted-foreground);margin-bottom:32px}.cta-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}.cta-button{padding:16px 32px;border-radius:12px;text-decoration:none;font-size:1rem;font-weight:600;transition:all .3s ease;display:inline-flex;align-items:center;gap:8px;min-width:140px;justify-content:center}.cta-button.primary{background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:var(--primary-foreground);box-shadow:0 4px 15px rgba(var(--accent-rgb),.3)}.cta-button.primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(var(--accent-rgb),.4)}.cta-button.secondary{background:transparent;color:var(--foreground);border:2px solid var(--border)}.cta-button.secondary:hover{border-color:var(--accent);background:rgba(var(--accent-rgb),.05)}.demo-section{margin-top:60px;text-align:center}.demo-section h2{font-size:1.75rem;font-weight:600;color:var(--foreground);margin-bottom:32px}.demo-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));grid-gap:20px;gap:20px}.demo-card{padding:24px;background:var(--card-background);border:1px solid var(--border);border-radius:12px;text-decoration:none;color:var(--foreground);transition:all .3s ease}.demo-card:hover{transform:translateY(-2px);border-color:var(--accent);box-shadow:0 8px 25px rgba(var(--accent-rgb),.15)}.demo-card h3{font-size:1.1rem;font-weight:600;margin-bottom:8px;color:var(--foreground)}.demo-card p{font-size:.9rem;color:var(--muted-foreground);line-height:1.5}.text-center{text-align:center}.mb-4{margin-bottom:1rem}.mt-4{margin-top:1rem}.demo-notice{background:linear-gradient(135deg,rgba(59,130,246,.1),rgba(37,99,235,.05));border:1px solid rgba(59,130,246,.2);color:var(--accent-dark);padding:12px 20px;border-radius:8px;margin-bottom:20px;font-size:.9rem;text-align:center;font-weight:500}.safety-status{position:fixed;top:80px;right:20px;background:rgba(34,197,94,.9);color:#fff;padding:8px 16px;border-radius:20px;font-size:.8rem;font-weight:500;z-index:50;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 2px 10px rgba(34,197,94,.3);animation:pulse 2s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.8}}.loading-spinner{display:flex;align-items:center;justify-content:center;gap:12px;padding:40px 20px;text-align:center}.spinner{width:20px;height:20px;border-top:2px solid var(--border);border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}@keyframes wave{0%,to{transform:rotate(0deg)}10%,30%{transform:rotate(14deg)}20%,40%{transform:rotate(-8deg)}50%{transform:rotate(10deg)}60%{transform:rotate(0deg)}}@media (max-width:768px){.content{padding:20px 12px}.hero-section{padding:30px 0 40px}.heading{font-size:2.2rem}.subtitle{font-size:1.1rem}.features{margin:40px 0;gap:30px}.feature-buttons{grid-template-columns:repeat(2,1fr);gap:16px}.feature-button{width:160px;height:160px;padding:16px}.feature-icon{font-size:2.5rem;margin-bottom:12px}.feature-button h2{font-size:1.1rem}.feature-desc{padding:20px}.desc-header{flex-direction:column;align-items:flex-start;gap:8px}.feature-tag{margin-left:0}.cta-section{padding:40px 0}.cta-section h2{font-size:1.75rem}.cta-buttons{flex-direction:column;align-items:center}.cta-button{width:100%;max-width:280px}.demo-cards{grid-template-columns:1fr}.nav{padding:0 12px}.auth-section{flex-direction:row;gap:8px;flex-wrap:wrap}.auth-btn,.logout-btn{padding:8px 12px;font-size:.85rem;height:36px}.user-menu{flex-wrap:wrap;justify-content:flex-end}.safety-status{position:static;margin-bottom:16px;margin-left:auto;margin-right:auto;display:inline-block}}@media (max-width:480px){.heading{font-size:2rem}.feature-buttons{grid-template-columns:1fr;gap:12px}.feature-button{width:140px;height:140px;padding:12px}.feature-icon{font-size:2rem;margin-bottom:8px}.feature-button h2{font-size:1rem}.feature-desc{padding:16px 0}.feature-desc p{font-size:.9rem}.cta-button{padding:14px 24px;font-size:.95rem}.user-info,.user-menu,.user-profile{height:32px;gap:4px}.user-avatar,.user-profile img{width:20px!important;height:20px!important}.user-name{font-size:.8rem;max-width:80px}.auth-btn,.logout-btn{padding:6px 10px;font-size:.8rem;height:32px}}.auth-form{max-width:400px;margin:0 auto;padding:32px;background:var(--card-background);border:1px solid var(--border);border-radius:16px;box-shadow:0 4px 20px rgba(0,0,0,.08)}.form-group{margin-bottom:20px}.form-label{display:block;margin-bottom:8px;font-weight:500}.form-input,.form-label{color:var(--foreground);font-size:.95rem}.form-input{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:8px;background:var(--input);transition:all .2s ease}.form-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(var(--accent-rgb),.1)}.form-button{width:100%;padding:14px 20px;background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:var(--primary-foreground);border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 2px 10px rgba(var(--accent-rgb),.3)}.form-button:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 15px rgba(var(--accent-rgb),.4)}.form-button:disabled{opacity:.6;cursor:not-allowed;transform:none}.error-message{color:var(--destructive);font-size:.85rem;margin-top:6px;margin-bottom:10px}.back-link{display:inline-flex;align-items:center;color:var(--muted-foreground);text-decoration:none;font-size:.95rem;font-weight:500;transition:color .2s ease;margin-bottom:20px}.back-link:hover{color:var(--accent)}.page-header{text-align:center;margin-bottom:40px}.page-title{font-size:2rem;font-weight:700;color:var(--foreground);margin-bottom:12px}.page-description{color:var(--muted-foreground);font-size:1rem;max-width:600px;margin:0 auto}