*{box-sizing:border-box;padding:0;margin:0}body,html{max-width:100vw;overflow-x:hidden;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh}body{color:#fff;padding:20px}.container{max-width:600px;margin:0 auto;padding:20px}h1{text-align:center;font-size:2rem}.form,h1{margin-bottom:30px}.form{background:hsla(0,0%,100%,.1);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:15px;padding:25px;box-shadow:0 8px 32px 0 rgba(31,38,135,.37)}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;font-weight:600}.form-group input,.form-group textarea{width:100%;padding:12px;border:none;border-radius:8px;background:hsla(0,0%,100%,.9);color:#333;font-size:16px}.form-group textarea{resize:vertical;min-height:100px}.btn{background:#fff;color:#667eea;border:none;padding:12px 24px;border-radius:8px;cursor:pointer;font-size:16px;font-weight:600;transition:transform .2s,box-shadow .2s;width:100%}.btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,.2)}.btn:active{transform:translateY(0)}.items-list{background:hsla(0,0%,100%,.1);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:15px;padding:25px;box-shadow:0 8px 32px 0 rgba(31,38,135,.37)}.item{background:hsla(0,0%,100%,.2);padding:15px;margin-bottom:15px;border-radius:10px;border-right:4px solid #fff}.item:last-child{margin-bottom:0}.item h3{margin-bottom:8px;font-size:1.2rem}.item p{opacity:.9;line-height:1.6}.empty-state{text-align:center;padding:40px 20px;opacity:.8}.loading{text-align:center;padding:20px}.error{background:rgba(255,0,0,.2);color:#fcc;padding:15px;border-radius:8px;border:1px solid rgba(255,0,0,.3)}.error,.success{margin-bottom:20px}.success{background:rgba(0,255,0,.2);color:#cfc;padding:20px;border-radius:8px;border:1px solid rgba(0,255,0,.3);text-align:center}.success h3{margin-bottom:10px;font-size:1.5rem}.success p{margin:0;font-size:1.1rem}