.app{min-height:100vh;display:flex;flex-direction:column}.app-header{background:#ffffff26;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.2);padding:1rem 1.5rem;color:#fff}.header-content{max-width:680px;margin:0 auto;display:flex;align-items:center;gap:1rem}.header-icon{font-size:2rem;background:#fff;color:#6366f1;width:3rem;height:3rem;border-radius:12px;display:grid;place-items:center;font-weight:900;flex-shrink:0}.app-header h1{font-size:1.5rem;font-weight:700;line-height:1.2}.header-subtitle{font-size:.75rem;opacity:.8;font-weight:500;letter-spacing:.05em;text-transform:uppercase}.app-main{flex:1;padding:1.5rem;max-width:680px;width:100%;margin:0 auto}.app-footer{text-align:center;padding:1rem;color:#fff9;font-size:.75rem}:root{font-family:Segoe UI,system-ui,-apple-system,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#213547;background-color:#f5f5f5;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2)}#root{min-height:100vh;display:flex;flex-direction:column}