*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;color:#333;overflow-x:hidden}.navbar{position:fixed;top:0;width:100%;background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:1rem 5%;display:flex;justify-content:space-between;align-items:center;z-index:1000;box-shadow:0 2px 10px #0000001a}.logo{font-size:1.8rem;font-weight:700;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav-links{display:flex;gap:2rem;list-style:none}.nav-links a{text-decoration:none;color:#333;font-weight:500;transition:color .3s}.nav-links a:hover{color:#667eea}.hero{height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;text-align:center;color:#fff;position:relative;overflow:hidden}.hero-content{position:relative;z-index:1;padding:2rem}.hero h1{font-size:4rem;margin-bottom:1rem}.hero p{font-size:1.5rem;margin-bottom:2rem}.cta-button{display:inline-block;padding:1rem 2.5rem;background:#fff;color:#667eea;text-decoration:none;border-radius:50px;font-weight:700;font-size:1.1rem;border:none;cursor:pointer;transition:transform .3s,box-shadow .3s}.cta-button:hover{transform:translateY(-3px);box-shadow:0 10px 25px #0003}.cta-button:disabled{background:#ccc;cursor:not-allowed;transform:none}.section{padding:5rem 5%}.section-title{text-align:center;font-size:2.5rem;margin-bottom:3rem;color:#333}.products-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;max-width:1200px;margin:0 auto}.product-card{background:#fff;border-radius:15px;overflow:hidden;box-shadow:0 5px 20px #0000001a;transition:transform .3s,box-shadow .3s;cursor:pointer}.product-card:hover{transform:translateY(-10px);box-shadow:0 15px 40px #0003}.product-image{height:250px;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;font-size:4rem;color:#fff}.product-info{padding:1.5rem}.product-info h3{font-size:1.5rem;margin-bottom:.5rem;color:#333}.product-info p{color:#666;margin-bottom:1rem}.features{background:#f8f9fa}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;max-width:1200px;margin:0 auto}.feature-item{text-align:center;padding:2rem;background:#fff;border-radius:15px;transition:transform .3s}.feature-item:hover{transform:scale(1.05)}.feature-icon{font-size:3rem;margin-bottom:1rem}.feature-item h3{font-size:1.3rem;margin-bottom:.5rem;color:#667eea}.cta-section{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;text-align:center;padding:5rem 5%}.cta-section h2{font-size:2.5rem;margin-bottom:1rem}.cta-section p{font-size:1.2rem;margin-bottom:2rem}.secondary-button{display:inline-block;padding:1rem 2.5rem;background:transparent;color:#fff;border:2px solid white;text-decoration:none;border-radius:50px;font-weight:700;font-size:1.1rem;transition:background .3s,color .3s}.secondary-button:hover{background:#fff;color:#667eea}footer{background:#333;color:#fff;text-align:center;padding:2rem 5%}.logout-btn{background:none;border:none;color:#333;font-weight:500;cursor:pointer;font-family:inherit;font-size:1rem}.logout-btn:hover{color:#667eea}main{padding-top:80px;min-height:calc(100vh - 160px)}.auth-container{display:flex;justify-content:center;align-items:center;background:#f8f9fa}.auth-card{background:#fff;padding:3rem;border-radius:15px;box-shadow:0 5px 20px #0000001a;width:100%;max-width:500px}.auth-form{display:flex;flex-direction:column;gap:1.5rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.form-group label{font-weight:600;color:#555}.form-group input{padding:.8rem;border:1px solid #ddd;border-radius:8px;font-size:1rem}.form-group input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 2px #667eea33}.error-message{background:#fee2e2;color:#dc2626;padding:1rem;border-radius:8px;margin-bottom:1.5rem;text-align:center}.auth-footer{margin-top:2rem;text-align:center;color:#666}.auth-footer a{color:#667eea;text-decoration:none;font-weight:700}@media (max-width: 768px){.hero h1{font-size:2.5rem}.hero p{font-size:1.2rem}.nav-links{gap:1rem}.section-title{font-size:2rem}.form-row{grid-template-columns:1fr}}