:root{font-family:Arial,Helvetica,sans-serif;color:#f8fafc;background:#0d1117}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%;width:100%;background:#0d1117}body{min-height:100vh}button,input{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.app-shell{min-height:100vh;background:radial-gradient(circle at top,rgba(0,200,83,.16),transparent 35%),linear-gradient(180deg,#0d1117,#10151f)}.page-center{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:32px}.glass-panel{background:#161b22e6;border:1px solid rgba(148,163,184,.18);box-shadow:0 22px 64px #00000059;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}