:root{--bg:#f3f6f9;--panel:#fff;--text:#0f172a;--muted:#5b677a;--line:#d9e2ec;--brand:#0f766e;--brand-2:#155e75;--warn:#92400e;--warn-bg:#fef3c7}*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:Segoe UI,Noto Sans,sans-serif;background:radial-gradient(circle at top,#e8f4f3 0,var(--bg) 40%,#edf2f7 100%);color:var(--text);overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.auth-shell{min-height:100vh;display:grid;place-items:center;padding:1rem}.auth-card{width:100%;max-width:28rem;background:var(--panel);border:1px solid var(--line);border-radius:1rem;padding:1.25rem;box-shadow:0 20px 40px rgba(15,23,42,.08)}.auth-form{display:grid;grid-gap:.75rem;gap:.75rem}.input{width:100%;border:1px solid var(--line);border-radius:.75rem;padding:.65rem .8rem;background:#fff}.btn{border:0;border-radius:.75rem;padding:.7rem .9rem;cursor:pointer;font-weight:600}.btn-primary{background:linear-gradient(120deg,var(--brand),var(--brand-2));color:#fff}.text-muted{color:var(--muted);font-size:.92rem}