.App{text-align:center}.top-nav{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;background-color:#f8f9fa;border-bottom:1px solid #e9ecef;position:sticky;top:0;z-index:100}.nav-left h1{margin:0;color:#646cff;font-size:1.5rem;font-weight:600}.nav-right,.user-menu{display:flex;align-items:center;gap:1rem}.welcome-text{color:#333;font-weight:500}.login-button,.logout-button{background-color:#646cff;color:#fff;border:none;border-radius:6px;padding:8px 16px;font-size:14px;font-weight:500;cursor:pointer;transition:background-color .3s}.login-button:hover,.logout-button:hover{background-color:#535bf2}.logout-button{background-color:#6c757d}.logout-button:hover{background-color:#5a6268}.loading{display:flex;justify-content:center;align-items:center;height:100vh;font-size:1.2rem;color:#666}.App-header{background-color:#282c34;padding:20px;color:#fff;min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:calc(10px + 2vmin)}h1{margin:0 0 20px;font-size:3rem;color:#61dafb}p{margin:10px 0;font-size:1.2rem;line-height:1.5;max-width:600px}.api-section{margin:30px 0;padding:20px;background-color:#ffffff1a;border-radius:10px;border:1px solid rgba(97,218,251,.3)}.api-section h2{margin:0 0 20px;font-size:1.8rem;color:#61dafb}.favorite-number{background-color:#61dafb33;padding:15px;border-radius:8px;border:1px solid #61dafb}.favorite-number strong{color:#61dafb;font-size:1.5rem}.error{color:#ff6b6b;background-color:#ff6b6b1a;padding:10px;border-radius:5px;border:1px solid #ff6b6b}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes modalSlideIn{0%{transform:scale(.95);opacity:0}to{transform:scale(1);opacity:1}}@keyframes slideIn{0%{transform:translateY(-10px);opacity:0}to{transform:translateY(0);opacity:1}}.ds-button:focus-visible,.ds-input:focus-visible{outline:2px solid #3b82f6;outline-offset:2px}.ds-text-center{text-align:center}.ds-text-left{text-align:left}.ds-text-right{text-align:right}.ds-flex{display:flex}.ds-flex-col{flex-direction:column}.ds-items-center{align-items:center}.ds-justify-center{justify-content:center}.ds-justify-between{justify-content:space-between}.ds-gap-1{gap:.25rem}.ds-gap-2{gap:.5rem}.ds-gap-3{gap:.75rem}.ds-gap-4{gap:1rem}.ds-hidden{display:none}.ds-block{display:block}.ds-inline-block{display:inline-block}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}*{box-sizing:border-box}#root{width:100%;height:100vh}