html,body{margin:0;height:100%;font-family:Arial,sans-serif;background:#05070d;color:#fff;overflow:hidden}#stars{position:fixed;inset:0}.overlay{position:fixed;inset:0;background:radial-gradient(circle at 15% 75%,rgba(255,153,51,.45),transparent 25%),radial-gradient(circle at 80% 30%,rgba(120,120,140,.18),transparent 35%)}main{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%}h1{font-size:64px;letter-spacing:8px;margin:0}h1 span{display:block;font-size:24px;color:#f4a340;letter-spacing:10px}.sub{color:#aab3c2}.card{width:380px;background:rgba(20,24,35,.72);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.12);border-radius:22px;padding:30px;box-shadow:0 0 40px rgba(0,0,0,.5)}.planet{width:120px;height:120px;border-radius:50%;margin:0 auto 20px;background:radial-gradient(circle at 35% 30%,#ddd,#777 55%,#2d2d2d);box-shadow:0 0 30px rgba(244,163,64,.7);animation:r 20s linear infinite}input{width:100%;box-sizing:border-box;padding:14px;margin:10px 0;background:#10141f;border:1px solid #333;color:#fff;border-radius:10px}button{width:100%;padding:14px;border:none;border-radius:10px;background:#f4a340;color:#111;font-weight:bold;cursor:pointer}button:hover{background:#ffbf5a}@keyframes r{to{transform:rotate(360deg)}}