*{box-sizing:border-box;margin:0;padding:0}html{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif}body{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);min-height:100vh}.container{max-width:500px;margin:0 auto;padding:40px 20px}.card{text-align:center;background:#fff;border-radius:12px;padding:40px;box-shadow:0 10px 40px #0000001a}.title{color:#1a1a1a;margin-bottom:10px;font-size:28px;font-weight:700}.subtitle{color:#666;margin-bottom:30px;font-size:14px}.btn{cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;gap:10px;width:100%;padding:14px 20px;font-size:16px;font-weight:600;transition:all .3s;display:flex}.btn-primary{color:#fff;background:#1877f2}.btn-primary:hover{background:#0a66c2;transform:translateY(-2px);box-shadow:0 5px 20px #1877f266}.btn-secondary{color:#1a1a1a;background:#f0f2f5}.btn-secondary:hover{background:#e4e6eb}.loading{justify-content:center;align-items:center;gap:10px;display:flex}.spinner{border:3px solid #f3f3f3;border-top-color:#1877f2;border-radius:50%;width:20px;height:20px;animation:1s linear infinite spin;display:inline-block}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.error{color:#c33;background:#fee;border-radius:8px;margin-bottom:20px;padding:15px;font-size:14px}.success{color:#3c3;background:#efe;border-radius:8px;margin-bottom:20px;padding:15px;font-size:14px}.profile-section{background:#f5f5f5;border-radius:8px;margin:30px 0;padding:20px}.profile-avatar{object-fit:cover;border:3px solid #1877f2;border-radius:50%;width:80px;height:80px;margin:0 auto 15px}.profile-info{text-align:left;margin:15px 0}.profile-label{color:#666;text-transform:uppercase;letter-spacing:1px;font-size:12px}.profile-value{color:#1a1a1a;margin-top:5px;font-size:16px;font-weight:600}