:root{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background-color:#f7f9fb;color:#0f172a}body{margin:0}main.container{min-height:100vh;max-width:960px;margin:0 auto;padding:2rem;display:flex;flex-direction:column;gap:1.5rem}header,section{background:#fff;padding:1.5rem;border-radius:12px;box-shadow:0 2px 12px #0f172a14}header h1{margin-top:0}button{padding:.6rem 1.4rem;border-radius:999px;border:none;background-color:#2563eb;color:#fff;font-size:1rem;cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}.auth-buttons,.buttons{display:flex;gap:1rem;flex-wrap:wrap}pre{background-color:#0f172a;color:#f8fafc;padding:1rem;border-radius:8px;overflow-x:auto}.error{color:#dc2626}