:root{--bg:#000;--text:#f2f2f2;--muted:#9a9a9a;--line:#2a2a2a;--accent:#fff}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;min-height:100vh}
.topo{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding:16px 24px;border-bottom:1px solid var(--line)}
.logo{font-weight:600;font-size:1.2rem}
.login{display:flex;gap:8px;flex-wrap:wrap;margin-left:auto}
.login input{background:#111;border:1px solid var(--line);color:var(--text);padding:9px 12px;border-radius:8px;width:160px;font-size:.9rem}
.login input:focus{outline:2px solid var(--accent);outline-offset:1px}
.login button,.btn{background:var(--accent);color:#000;border:0;padding:9px 18px;border-radius:8px;font-weight:600;cursor:pointer;text-decoration:none;display:inline-block}
.msg{text-align:right;padding:6px 24px 0;margin:0;color:var(--muted);font-size:.85rem;min-height:1.4em}
.hero{max-width:720px;margin:12vh auto 0;padding:0 24px;text-align:center}
.hero h1{font-size:clamp(2rem,6vw,3.2rem);margin:0 0 16px}
.hero p{color:var(--muted);font-size:1.1rem;margin:0 0 28px}
@media(max-width:600px){.login{width:100%}.login input{flex:1;min-width:0;width:auto}}
.sair{margin-left:auto;background:transparent;color:var(--text);border:1px solid var(--line);padding:9px 18px;border-radius:8px;cursor:pointer}